The invention relates generally to mobile-target training systems, and more particularly to a mobile-target training system that detects projectile hits of significance.
Today's military and security forces must be prepared to operate in dynamic and ever-changing operational environments that can be populated by a combination of threat entities, friendly entities, and neutral entities. In general, military/security forces must be proficient at acquiring entities, discerning their danger status, assessing risk and potential collateral damage to personnel and property, and then appropriately engaging the various types of entities in an operational area. In terms of threat entities, engagement often means shooting at the entity. Given the variety of potential operational scenarios and entities that can be encountered, military/security forces must be able to train with inanimate mobile entities/targets that replicate dynamic operational environments and scenarios.
Ideally, effective training programs would utilize inanimate and mobile targets capable of the following:
Previous target training systems include those using fixed-location targets (e.g., staked and/or pop-up targets), rail-mounted targets capable of movement along fixed-position rails or tracks, and individually mobile or robotic units. Fixed-location targets and rail-mounted targets are limited in value since they are incapable of addressing the requirements of an effective training program as outlined above. Further, fixed-location targets have a large operational footprint, are a logistics support challenge, and present intensive maintenance requirements due to their constant exposure to the elements. Existing mobile/robotic units are capable of less restricted movement in an operational environment, but generally use a variety of leader-follower schemes that lack unpredictability and the ability to present complex operational scenarios. Further, existing mobile/robotic units can present ambiguous target “hit” results owing to their use of inertial impact sensors for registering a target “hit”. Unfortunately, ricochets, shrapnel, and other irrelevant impact events generated in direct fire engagement of targets are frequently recognized and recorded as “hits” by impact sensors on other/nearby mobile target systems thereby skewing the engagement results and value of training exercises.
Accordingly, it is an object of the present invention to provide a hit-detecting, mobile-target training system.
Another object of the present invention is to provide a mobile-target training system that records target “hits” in a way that unambiguously indicates when a direct hit on a mobile target by a shooter has occurred.
Still another object of the present invention is to provide a mobile-target training system that can control multiple mobile targets simultaneously in a semi-autonomous fashion.
Yet another object of the present invention is to provide a mobile-target training system having mobile targets that adapt to changing environmental surface conditions to maintain a prescribed target-track direction and speed.
Other objects and advantages of the present invention will become more obvious hereinafter in the specification and drawings.
In accordance with the present invention, a mobile-target training system includes a base and a plurality of independently-controlled motorized wheels coupled to the base. A target is coupled to the base and has a penetration detector coupled thereto. The penetration detector includes an open electric circuit having electrical properties. The open electric circuit exhibits a change in its electrical properties for each occurrence of an object passing through the open electric circuit. A feedback generator is coupled to the penetration detector for generating at least one of a visual feedback and an audible feedback for each occurrence of change in the electrical properties of the open electric circuit.
Other objects, features and advantages of the present invention will become apparent upon reference to the following description of the preferred embodiments and to the drawings, wherein corresponding reference characters indicate corresponding parts throughout the several views of the drawings and wherein:
Referring now to the drawings and more particularly to
System 10 includes a base 12 supported by a number of wheels 14 that engage a ground surface (not shown). Each of wheels 14 is rotated forward or backward on its corresponding axle 16 that is driven by a dedicated reversible motor 18. Motors 18 are powered and controlled independently by instructions from a system controller 20. Each of motors 18 can include an onboard motor controller (not shown) for implementing the instructions received from system controller 20. In some embodiments of the present invention, system controller 20 can be programmed with a path/speed plan governing rotation direction and rotation speed of each of wheels 14 to thereby dictate precise movements of system 10 over a ground surface. In other embodiments of the present invention, system controller 20 is provided with waypoint navigation data or manual control data over a wireless communications link as will be described later herein.
System 10 also includes a target 30 coupled to base 12 such that target 30 moves with base 12. Target 30 has one or more penetration detectors 32 coupled thereto. Briefly, each penetration detector 32 is an electrical circuit having electrical properties that undergo a change only when a bullet (not shown) on its original aimed path penetrates the detector. That is, each penetration detector's electrical properties are not changed by slower-paced impact events such as bullet ricochets, bullet shrapnel, and other impact events not associated with a bullet's original aimed path. Each time a bullet penetrates one of detectors 32 to cause a change in the detector's electrical properties, a “hit” signal indicative of such electrical property change is provided to a feedback generator 34. In response to receiving a “hit” signal, feedback generator 34 generates one or more of visual feedback and audible feedback that can be recognized by trainees and training personnel. Feedback generator 34 can include a dedicated processor governing its operations, or the processing aspects of feedback generator 34 could be provided by system controller 20 without departing form the scope of the present invention.
Referring additionally now to
A variety of environmental surface obstacles (e.g., rocks, roots, holes, man-made trash, ground undulations, standing water, mud, ice, etc.) can cause system 10 to deviate from a desired path and/or speed of travel. To minimize the effects caused by ground surface obstacles, some embodiments of the present invention can employ a unique wheel control scheme to keep system 10 on its intended path and at its intended speed. Since each planned path dictates rotation speed and direction for each of wheels 14A-14D, system controller 20 can be programmed to continuously monitor differential torque between pairs of wheels 14A-14D, and compare the differential torque with what should be present for the execution of the planned path. When differences occur, system controller 20 directs and manages motors 18A-18B to modify the rotation speed/direction of the appropriate ones of wheels 14A-14D to minimize error between what the differential torque is and what is should be for each pair of wheels. For the illustrated four-wheel embodiment, differential torque for six pairs of wheels is monitored, i.e., 14A/14B, 14A/14C, 14A/14D, 14C/14D, 14B/14C and 14B/14D.
In general, each penetration detector's electrical circuit is an open circuit having electrical properties characterized by a zero voltage/current. When a bullet penetrates a detector's open electrical circuit, the electrical properties thereof are momentarily changed. A sequence of events associated with a bullet penetration of a penetration detector's open circuit is presented in
Some embodiments of the present invention can utilize a unique layered arrangement of electrically-conductive plates and electrical insulator material for a penetration detector's electrical circuit. By way of an illustrative example, one such layered electrical circuit of a penetration detector 32 is illustrated in its pre “hit” state in
Plates 320/322/324 are electrically charged in accordance with an alternating polarity scheme between adjacent plates. In the illustrated embodiment, plates 320 and 324 are positively charged (“+”) and plate 322 is negatively charged (“−”). It is to be understood that the polarities on the plates could be reversed without departing from the scope of the present invention. Electric charging of the plates can be provided by a power source 330 coupled thereto. As a result of this structure, open electrical circuits are defined by plates 320/322 and plates 322/324. The above-described layered arrangement can be made from flexible materials and be less than one inch in thickness thereby allowing the layered arrangement to be sized/shaped for coupling to contoured, three-dimensional surfaces. The spacing between adjacent electrically-conductive plates is generally less than the length of any bullet that the system will be used with.
Prior to being penetrated by a bullet (
Referring now to
As mentioned above, the training system of the present invention provides one or more of visual feedback and audible feedback when a target “hit” is caused by a bullet passing through a penetration detector coupled to the system's target. The implementation of such feedback is carried out by the system's feedback generator. Referring now to
In some embodiments of the present invention, the above-described training system can further include a remote control for transmitting wireless control signals governing path traversal for one or more of the training system's mobile target units where each path is implemented by the respective mobile target unit's system controller 20 as described above. A system of the present invention that includes a remote control is illustrated in
Processor 51 is programmed to carry out the various functions of remote control 50 which can include a unique communications scheme that will be described further below. Input devices 52 can include a keyboard and/or individual-function keys, voice recognition, port(s) for accepting external memory storage devices, etc. Display 53, memory 54, and transmitter/transceiver 55 can be any of a variety of known types of devices without departing from the scope of the present invention.
Ideally, training scenarios should present trainees with a number of moving targets traversing a ground environment along multiple and varied paths/speeds in order to replicate dynamic, unpredictable, and complex operational scenarios. In some embodiments of the present invention, these goals can be achieved using a single remote control 50 as will now be explained with reference to
For operational scenarios involving a plurality of mobile target units, remote control 50 can implement a unique communications scheme requiring no signal repeaters over communications distances of up to one mile, while also eliminating communication errors that can lead to errors in paths traversed by the mobile target units. To achieve a communications range of up to one mile, the communications scheme implemented by remote control 50 is carried out in the FCC-approved 900 MHz communications band. To assure error free transmission-receipt results, the present invention assigns a unique time window to each communications “node” in the operational scenario. For example, if four mobile target units were to be deployed and controlled by remote control 50, five nodes are defined. Thus, five time windows are used with one time window being assigned to remote control 50 and each of the other four time windows being assigned to a respective one of the mobile target units. The sequence of time windows is continuously repeated with each communications node being responsive only to signals/data appearing within its assigned time window.
The communications scheme can also employ Frequency Hopping Spread Spectrum (FHSS) technology and “packet” technology to improve the robustness of the wireless communications. Briefly, FHSS means that remote control 50 and each mobile target unit share a code indicating what frequency and when FHSS will “hop” randomly (e.g., approximately every 20 milliseconds) to randomly selected frequencies. The “packet” processing breaks a message into a series of packets where each packet has the following set of “tags”:
To further enhance the realistic training experience provided by the present invention, target 30 can be configured in three dimensions to resemble a human torso and head in both shape and size. In such embodiments, the target shape will necessarily have curved contours to present a realistic appearance. Accordingly, the above-described layered and flexible penetration detector (
Target 30 is coupled to base 12 by target manipulator 340 (e.g., mechanized control arms as illustrated). In each of
The present invention can utilize the concept of lethal and non-lethal indicating penetration detectors in the following manner. Prior to penetration of any of detectors 32A-32D, manipulator 340 positions target 30 in an upright (or standing) position as shown in
The advantages of the present invention are numerous. The hit-detecting mobile-target training system includes a mobile target unit that provides unambiguous indications of target “hits” caused by a bullet on its original aimed path. A remote control can be included with the system to provide for control of multiple mobile target units in accordance with a robust communications scheme requiring no signal repeaters even when relatively large training environments are utilized. Each mobile target unit can include a wheel control scheme that adapts to changing environmental surface conditions in order to keep the mobile target unit on its prescribed route.
Although the invention has been described relative to a specific embodiment thereof, there are numerous variations and modifications that will be readily apparent to those skilled in the art in light of the above teachings. For example, each mobile target unit of the present invention can be configured to transmit data (e.g., each lethal and/or non-lethal “hit”) back to the system's remote control where such data can be collected/stored for later evaluation. The target could also replicate the three-dimensional and contoured body (or body portions) of an animal (e.g., deer) such that the present invention can be incorporated into an entertainment venue for hunters. It is therefore to be understood that, within the scope of the appended claims, the invention may be practiced other than as specifically described.
Pursuant to 35 U.S.C. § 119, the benefit of priority from provisional applications 63/207,608 and 63/207,609, both with a filing date of Mar. 10, 2021, and provisional application 63/207,957, with a filing date of Apr. 1, 2021, are claimed for this non-provisional application.
Number | Date | Country | |
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63207608 | Mar 2021 | US | |
63207609 | Mar 2021 | US | |
63207957 | Apr 2021 | US |