Autonomous Self-Moving Animal Corral System and Device
20210274748 · 2021-09-09
Inventors
- Thomas H. Massie (Garrison, KY, US)
- Rhonda K. Massie (Garrison, KY, US)
- Hans D. Høeg (Vancouver, WA, US)
Cpc classification
A01K39/04
HUMAN NECESSITIES
A01K3/001
HUMAN NECESSITIES
International classification
A01K3/00
HUMAN NECESSITIES
Abstract
Method, means, and system for a mobile, self-moving, automated animal corral or confinement system.
Claims
1. A system for moving a containment assembly, comprising: a containment assembly; an energy storage unit; an energy collection unit; a movement assembly for moving said containment assembly; and an electronics control unit for managing the operation of the system.
2. The system of claim 1, said movement assembly including a cable for pulling the containment assembly.
3. The system of claim 1, said movement assembly including a radially asymmetric rotating element for lifting said containment assembly vertically while providing forward horizontal motion of the containment assembly.
4. The system of claim 1, further comprising a maiming prevention system to prevent the maiming of an animal in the containment assembly.
5. The system of claim 4, the maiming prevention system including moving said containment assembly slowly enough to not injure animals during movement.
6. The system of claim 4, the maiming prevention system including moving the containment assembly in increments so as to not injure animals during movement.
7. The system of claim 4, the maiming prevention system including a deflection element which yields if in contact with animals during motion of containment assembly so as to not injure animals.
8. The system of claim 4, the maiming prevention system including an element which induces/persuades animals to move forward with the movement of the containment assembly.
9. The system of claim 4, the maiming prevention system includes dispensing feed towards the front of the animal containment device such that the animals move towards the front of the device and are not injured by the back of the containment device during movement.
10. The system of claim 1, further comprising a water system, including a water collector, a water storage, and a water dispenser.
11. The system of claim 10, the water system further including a sensor for sensing water level in the water storage.
12. The system of claim 10, the water system further including a heater for keeping water in liquid state.
13. The system of claim 10, The system of claim 1, the water dispenser including multiple outlets arranged at different heights to accommodate different size animals.
14. The system of claim 10, the water system further including a cleanout system.
15. The system of claim 1, further comprising a feeding system, including a feed storage and a feed dispenser.
16. The system of claim 15, the feeding system including a sensor for sensing feed level in the feed storage.
17. The system of claim 15, wherein feed is automatically dispensed over a time period or in in a certain amount.
19. The system of claim 1, further comprising an animal protection system.
20. The system of claim 19, the animal protection system including an electric shocker.
21. The system of claim 20, wherein the energy storage unit has at least two elements, the energy of the first element being intermittently transferred to the second element using an inductor to achieve a higher voltage potential in the second element before energizing an electrical coil to produce the shock.
22. The system of claim 19, the animal protection system using the containment assembly as electrical ground.
23. The system of claim 19, wherein the animal protection system is powered down when it detects a user in proximity of the system.
24. The system of claim 1, further comprising a wireless communication device.
25. The system of claim 24, wherein the wireless communication device can be used to interact with the system from a digital device such as a smartphone or a computer, also through onboard sensors or a camera.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
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DETAILED DESCRIPTION
[0049] The following description illustrates the invention by way of example, not by way of limitation of the principles of the invention. This description will enable one skilled in the art to make and use the invention, and describes several embodiments, adaptations, variations, alternatives and uses of the invention, including what we presently believe is the best mode of carrying out the invention.
[0050] Prior art. The prior art covers a series of solutions intended to provide self-propelled animal shelters. One is to simply hitch one or more passive animal containment assemblies to a moving tractor, as done at Crown S Ranch, in Twisp, Wash. in 2010 (https://www.youtube.com/watch?v=qnCX53JVWCY). Another example is the work of students at Oregon State University in 2012, who attempted to build a self-moving coop (http://blogs.oregonstate.edu/engineering/2012/06/06/automated-mobile-chicken-coop/). It is not clear that this solution was ever reduced to practice. Similarly, the Full Monty Chicken Coop of 2011 describes a self-moving coop (https://inhabitat.com/tag/full-monty-chicken-coop/, and https://earthtechling.com/2011/09/a-solar-powered-chicken-coop-for-dummies/, https://www.greenlaunches.com/alternative-energy/backyard-solarpowered-chicken-coop-propels-self-with-green-energy-keeps-hungry-chickens-active.php), but it does not appear that this was ever reduced to practice either. One of the earliest examples of a patent in this area is U.S. Pat. No. 4,048,959A (1976), by Steele. This disclosure teaches a mobile, portable, and self-propelled corral for penning animals. This invention relies on driven wheels and a steering means. In U.S. Pat. No. 4,3411,81A (1981), “Livestock confinement pasture machine,” Fair also teaches driven wheels and a steering unit. Humblet also teaches wheels driven by an electric motor in BE1010748A6 (1996). Badiou teaches a Mobile Animal Shelter Device in WO2017197494A1 (2016) wherein a controller drives one or more motors operatively connected to (transport) wheels.
[0051] Additional prior art reference list: [0052] Daniel Badiou, Mobile Animal Shelter Device, 2016 [0053] Andre-Marie Humblet, Movable cage for domestic animals e.g. rabbits, 1994 [0054] Walter R Fair, Livestock confinement pasture machine, U.S. Pat. No. 4,341,181A, 1982 [0055] Battery Free Outdoors, LLC, including U.S. Pat. No. 8,525,469B1 to Laceky (remote capacitor powered camera), and U.S. Pat. No. 7,275,501 B1 to Lackey (remote capacitor based auto-feeder—it teaches use of first and second capacitive networks, whereas the present invention only uses a single capacitive network.) [0056] Solar powered chicken tractor at Crown S Ranch, Twisp Wash., 2010, https://www.youtube.com/watch?v=qnCX53JVWCY [0057] Oregon State University student project, 2012, http://blogs.oregonstate.edu/engineering/2012/06/06/automated-mobile-chicken-coop/ [0058] Full Monty Mobile Chicken Coop, 2011, https://inhabitat.com/tag/full-monty-chicken-coop/, https://earthtechling.com/2011/09/a-solar-powered-chicken-coop-for-dummies/, https://www.greenlaunches.com/alternative-energy/backyard-solarpowered-chicken-coop-propels-self-with-green-energy-keeps-hungry-chickens-active.php
[0059] Websites related to the prior art: [0060] Front yard coop: a solar-powered and self-propelling chicken coop, inhabitat.com [0061] Hersh mobile chicken coop with chicken run, wayfair.com [0062] Betterchickenhomes.com [0063] Omlet Eglu Cube Chicken Coop [0064] https://mobilechickenhouse.com [0065] https://pasturedpoultrytalk.com/tag/terrell-spencer/ [0066] Smoky Mountain Chicken tractors, smokymtnchickentractors.com [0067] Urbancoopcompany.com [0068] Rules for raising chickens: https://www.dummies.com/home-garden/hobby-farming/raising-chickens/how-to-determine-your-flock-size-and-space-requirements/ [0069] https://nichehacks.com/niche-hack-report-backyard-chickens-niche/ [0070] https://ecopetlife.com/chickens-eating-dog-poop/
Embodiment
[0071] In the context of its basic method, the present invention's most basic embodiment is a self-propelled animal shelter device.
[0072] The preferred embodiment of the present invention will be described by way of an example wherein a chicken coop is the animal containment device in question. Referring now to the drawings, in which like reference numbers represent similar or identical structures throughout,
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[0075] The water storage tubes 60 connected to the gutter system 50 run along the inside of the containment device and meet in a termination tube 70, as shown in
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[0080] The gait is illustrated in
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[0083] A key component of this invention is the ability for a user to interact with the autonomous corral wirelessly through a digital device.
[0084] A variation of the preferred embodiment of the present invention is shown in
[0085] Another advantage with the system shown in
[0086] The illustrations simply show the concept of moving a fleet of corrals. The specific mechanics of how to do this can vary, but is straightforward for anyone skilled in the art of farming. It would also be possible to daisy-chain autonomous corrals.
[0087] Some of the design choices, which are results of prolonged prototyping and testing, warrant particular attention as they are instrumental in providing the most commercially viable product, and are discussed below.
Capacitors
[0088] Capacitors store their energy as electric fields rather than in chemicals and therefore can be recharged over and over again and do not lose their ability to hold a charge like batteries do. So capacitors have a much longer lifespan than batteries, and batteries often reach early end of life in extreme weather conditions, which are a natural part of farming. While capacitors have lower energy density than batteries and therefore would take up more space for the same amount of energy, they have much greater power density. In other words they can discharge power faster than batteries which provide more constant power and are therefore ideal for situations where a burst of energy for a short time is needed, like shocking a predator or moving a corral a short distance. Similarly, unlike batteries capacitors recharge quickly, and this is important for maintaining the fence-shocking deterrent against predators. Therefore, they can still be made very small for the current application since energy is only ever needed in bursts. Capacitors are also less temperature sensitive than batteries and have a much broader range of operating temperatures, which is important in an application such as the one in question where weather can vary greatly. Also, the materials used to make capacitors are usually less toxic and do not cause the same toxic waste disposal problems as batteries do. The downsides to capacitors, such as lower energy density and self-discharge, making them poor for long term storage, are not relevant to the application in question since long term storage isn't the goal. The current application requires rapid discharges and recharges of energy and frequent cycling through high and low states of energy rather than long term storage.
[0089] Another advantage of capacitors is that sloshing energy between capacitors, for example for the purpose of boosting power as necessary, for instance to the electric fence, is more energy efficient than doing continuous direct current (DC) to direct current conversion. The problem with DC-to-DC conversion is that the converter is using power whenever it's running. When transferring power between two capacitors for example, conversion is required only once for the intended purpose and puts no ongoing strain on the energy budget.
Locomotion
[0090] Most self-moving corrals from the prior art use driven wheels to cause forward motion. The problem with this is that driven wheels are not robust against varied terrain. Because corrals have to stay very low to the ground to keep predators out, since the corrals do not have floors, it can be difficult for the wheels to get proper traction and in many cases the corral can end up high-centered, where the wheels lose ground contact and the corral becomes immobilized. Another problem with the current wheeled solutions is that they are generally bi-directional; it is very hard to move the corrals other than forward or backwards. Sideways motion is very difficult or impossible, but sideways motion is often necessary if the corral gets stuck, where the user will need to pull or rock the corral sideways to unstick it or to change its direction.
[0091] The current invention addresses the problems of the corral high-centering or getting stuck by using either of two superior locomotion schemes. The first employs a motorized winch (the winch could also be manual), a pull-cable system for pulling the corral. In its simplest use the winch would be attached either to a remote stationary anchor like a fence post or similar structure and the cable ending would be attached to the corral, or a fleet of corrals, or the winch would be attached to the corral itself, with the cable ending attached to the remote stationary anchor. With sufficient cable and actuator strength, such winch systems can provide massive pull force such that a winched corral would in practice never get stuck. This scheme also has the advantage that the corral can always stay close to the ground, and in certain implementations does not even need wheels; skis or rounded cups may do, so the corral simply slides along as the winch pulls it.
[0092] The second locomotion scheme is centered around an unconventional gait which relies on non-radially symmetric elements which unlike radially symmetric wheels can provide a combination of lift and translational force. This combination of vertical and horizontal force empirically allows the corral to negotiate difficult and uneven terrain and avoid getting stuck. In the simplest implementation the asymmetric elements are positioned at the front of the corral and when activated rotate, causing the front of the corral to lift up slightly and then fall forward, somewhat like a paddle stroke or dry land version of a butterfly stroke in swimming. It turns out that this form of gait is substantially more robust than regular wheels when moving animal corrals which need to stay close to the ground. The price for the robustness is that the corral has to lift up slightly every time it takes a stroke forward. Another feature of this gait is that it moves the corral forward in cyclical steps, much like walking, rather than continuous rolling like with wheels. Thus, the corral may be operated to only move one stroke at a time since it does not need to displace itself at a faster rate in order to provide fresh pasture ground at a sufficient rate. This is advantageous as the corral will only be exposed for a brief movement every so often.
Watering System
[0093] It is vital for corralled animals to have access to water. To avoid having to make regular trips into the field to replenish corral water supply, which would defeat part of the purpose of a self-moving corral, the current invention includes a rainwater collection system. This system comprises three parts, a collection surface, a drainage/gutter system, and a storage tank which is supplied by the drainage system.
Feeding System
[0094] There is a substantial amount of prior art in animal feeding systems, including capacitively driven systems, as taught by Laceky in U.S. Pat. No. 7,275,501B1. The current invention uses a similar scheme, where feed is dispensed to corralled animals in spurts. These spurts can either be fixed amounts of feed, or a fixed dispensing period, such as a few seconds. This type of discrete or rationed dispensing is necessary for raising for example meat birds, like broiler chickens, as they might eat themselves to death if given free access to feed. The feed system can be passive for egg birds which are not at the risk of overeating. However, an active feeding system could have merit also in the case of egg birds as it could be used to control feed so as to regulate the birds' diets, for example pushing them to eat more grass and bugs by restricting access to feed.
Non-Maiming Methods
[0095] Perhaps the most important consideration when designing a self-moving corral is making sure animals are not injured during movement of the corral. One way to keep the animals safe during motion is to make sure the corral moves in such a way that its moving walls, in particular the back wall, are not a danger to the animals. This can be achieved by moving the corral so slowly that animals cannot get entangled or injured. It can also be achieved by moving the corral by such a small amount, not larger than the size of an animal, that it does not pose a danger. Another successfully tested method is to use a compliant member at the back of the corral that either flexes or deflects if it comes into contact with an animal during motion. A further method is to use an element designed not to injure animals but to “persuade” or “induce” them to move forward as the corral moves, keeping them safe from getting entangled with moving walls. A fifth method is to dispense feed in conjunction with movement such that animals are drawn toward the feed and away from moving walls.
Mobile Shocking
[0096] Other than physically preventing predator access by using enclosures and other separators, a mature technology is using electric fences which administer shocks designed to scare predators or cause sufficient discomfort to deter further predation attempts. Traditionally electric fencing and containment systems are stationary and can therefore have a solid electrical connection to ground, providing more electrical stability and max potential difference for greater shock value. Easily movable electric fence systems exist, but they are not the same as truly mobile ambulatory systems as would be needed on a self-moving animal corral. One solution is simply to provide a large amount of slack such that the fence can still be grounded permanently in one spot while still move with the moving corral. This is however impractical and introduces unnecessary cost, complexity, and even safety hazards. The better solution is to have the shocking system mounted to the corral without any tether to a stationary spot in the ground. In this case that works well: because the corral has to remain very low to the ground as part of the predator defense scheme, it also has good ground contact, and so the corral itself can function well as the grounding structure, approximating actual earth ground.
Voltage and Power Levels
[0097] A key feature of the current invention is the integration of many different power levels onto a single circuit board. The reason this is important is because when there are multiple electrical events going on at different power levels, for example moving a winch motor or providing electrical shocks to predators, it is very easy to get electrical interference. A fence shocker for example could disrupt other electrical operations, so integrating electronic controls onto a single board allows for design and testing to avoid electrical interference across subsystems.
Favorable Interplay of Design Features and Requirements
[0098] The following is an example of the favorable interplay of elements with this invention. The corral has to be low to the ground in order to keep out predators. But this minimal ground clearance makes the corral harder to move and more likely to get stuck. Therefore, traditional wheeled locomotion schemes are inferior to schemes which require more torque, and therefore more power. Capacitors are ideal for this situation as they can provide substantial power for short bursts, what is needed for the types of locomotion schemes taught in this disclosure. Short bursts are also ideal for providing shocks to predators. And the shocking system requires a connection to ground, which is achieved precisely by a corral which sits in close contact with the ground. Thus, the energy storage system, the locomotion scheme, the predator protection schemes, both small ground clearance, and active electric shocking scheme, and even the feed dispensing scheme, which requires short bursts (for meat birds), all fit together well. In essence the system features require energy in short bursts, which is ideal for lightweight capacitors, which also have the advantage of never wearing out. What is particularly relevant in this case is the ability to move very heavy corrals from the high-power density capacitors. In order to not defeat the purpose of a self-moving corral, it is necessary to load the corral up with ample feed and water so regular trips out to the corral are not necessary—if one first has to deliver water and feed, one might as well move the corral when on the spot. This loading makes the corral heavy, making it hard to move manually, necessitating substantial force to effect motion. Substantial force requires large energy bursts, exactly what electrical storage devices such as capacitors can deliver.
Graphical User Interface
[0099] The automated corral can be wirelessly controlled through an application program running on a digital device such as a cellphone, tablet or personal computer. The graphical user interface (GUI) would allow the user to move the corral, dispense feed, provide shocks/energy to the electric fence, and engage a water heater to keep water from freezing, to name a few. The user interface provides a dashboard to allow a user to check on the status of the capacitor voltage/charge level, water level, water temperature, feed level, solar panel output, location, number of moves made during a certain period, or lifetime number of moves, or how far the corral has moved in a given period or over its lifetime. The interface would also let the user adjust settings, for example the number of scheduled moves per day, how far to move, move speed, how much torque to apply, how much feed to dispense, how long to feed, how much voltage to apply to each shock, how many shocks to administer per second, etc. The interface also allows visual inspection of the corral by accessing an internal camera showing live footage from inside the corral.
Practical Discoveries
[0100] The prototyping process revealed a number of optimizations. Firstly, it became clear that it was often necessary to boost voltage to achieve a proper shock when using a capacitive energy storage system. Another related feature was employing an auto-shutoff of the electric fencing when the system detects a user carrying the appropriate electronics, like a fob device or a digital device with the appropriate software or settings, approaching the corral to interact with it manually. Another innovation was the discovery that water dispensing nipples are necessary at different heights to accommodate animals of different sizes. From operating the prototypes it also became obvious that it was necessary to install a drain valve at the lowest point in the water storage device in order to drain accumulated gunk in the system. Further, the corral should remain stationary at night such that the animals are not affected by a moving corral when sleeping. In one instance a malfunction caused the prototype to move at night leaving the sleeping animals exposed. Making sure the corral only moves during the day can be achieved by using the solar panel not simply as an energy collection device, but also as a photo sensor to gauge onset of dusk and dawn. It is also possible to upload annual daylight information based on geolocation and key the corral movement accordingly. Another substantial discovery was that corrals can be operated as a fleet when tethering them to a sufficiently powerful winch, allowing for scaling of husbandry operations. And in this regard, it was also discovered that replacing standard winch cables with smaller, but sufficiently strong, versions, makes it possible to wrap more cable and thus cover greater distances, reducing the need to change the position of the winch as often—something which must be done every time the cable reaches the end of its travel.
[0101] Another advantage of the current system which can recharge quickly is that it can be used adaptively. In other words, the system can be operated based on opportunity rather than time. For example, in situations where there is ample sunlight and therefore energy supply, more energy could be deployed to various functions such as moving, heating water, feeding, raising the voltage on the electric fence, because the energy storage system will quickly be replenished. This can be done autonomously, based on intelligent monitoring of energy and power, where settings are automatically adjusted to dynamically optimize for available energy. For example, the Al might regularly check the energy storage level and if the capacitors are fully charged, then use the unstorable excess energy arriving from the solar panels to perform tasks or maintenance routines which require energy.
[0102] The present invention has been described above in terms of a presently preferred embodiment so that an understanding of the present invention can be conveyed. However, many alternative ways of constructing the system are possible without departing from the principle of the invention. The scope of the present invention should therefore not be limited by the embodiments illustrated, but rather it should be understood that the present invention has wide applicability with respect to its stated objectives. For example, the present invention extends to any animal that might fit with this situation, for example rabbits, or on a larger scale, livestock. All modifications, variations, or equivalent elements and implementations should therefore be considered within the scope of the invention.