Patent Publication Number: US-2022236030-A1

Title: Compound bow performance module

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a non-provisional application which claims priority from U.S. provisional application No. 62/836,427, filed Apr. 19, 2019, which is incorporated by reference herein in its entirety. 
    
    
     TECHNICAL FIELD/FIELD OF THE DISCLOSURE 
     The present disclosure relates generally to archery and more specifically it relates to the monitoring of bow performance and various aspects of hunting/archery. 
     BACKGROUND OF THE DISCLOSURE 
     Archery, as a sport or for use in hunting, has existed for thousands of years. Over time, the technology associated with bows has improved, allowing for an increase in reliability and accuracy. As bows have become more complex, the importance of monitoring the performance of the bow and components thereof has increased. Certain components, such as the bowstring, must be replaced as they wear down. Improper maintenance of the bow components can be dangerous to a user or may cause unnecessary damage to the bow. 
     Modern archers also have the choice of many accessories to carry with them or to attach to their bow. Many of these accessories require independent power supplies and require each accessory to be activated individually. Adding such components to an existing bow may complicate the bow and may impair the operation of the bow, or at least require compromises in the use of the bow to accommodate the added accessories. 
     Additionally, the increased accuracy of modern bows has placed a higher burden on the user to improve technique to get the best performance available from their equipment. Coaching of an archer typically requires a coach or other third party to observe the archer while using the bow and to provide comments. In addition to requiring another person to observe the archer, feedback from such coaching may be subjective or limited to the ability of another to identify what an archer is doing incorrectly. 
     The determination of certain parameters of a bow, including, for example, arrow speed, draw weight, and draw length, may influence the selection of certain equipment including, for example, the type of arrow. The measurement of such parameters traditionally requires a third party with additional external equipment, which may necessitate the archer to travel to a dedicated archery shop or other location to have such measurements taken. 
     SUMMARY 
     The present disclosure provides for a compound bow. The compound bow may include a riser. The compound bow may include an upper limb, the upper limb coupled to the riser. The compound bow may include a lower limb, the lower limb coupled to the riser. The compound bow may include a draw sensor. The compound bow may include a performance module coupled to the riser, the performance module operatively coupled to the draw sensor. 
     The present disclosure also provides for a compound bow. The compound bow may include a riser. The riser may include an arrow rest. The compound bow may include an arrow chronometer assembly. The arrow chronometer assembly may be mechanically coupled to the riser at or near the arrow rest. The arrow chronometer assembly may include one or more sensors positioned to detect movement of an arrow through arrow chronometer assembly. 
     The present disclosure also provides for a method. The method may include providing a compound bow. The compound bow may include a riser. The compound bow may include an upper limb, the upper limb coupled to the riser. The compound bow may include a lower limb, the lower limb coupled to the riser. The compound bow may include a bowstring coupled between the upper limb and the lower limb. The compound bow may include a draw sensor. The compound bow may include a performance module coupled to the riser. The performance module may be operatively coupled to the draw sensor. The method may include placing an arrow onto the compound bow. The method may include drawing back the bowstring. The method may include measuring, with the draw sensor, at least one parameter indicative of a draw weight or draw length. The method may include determining the draw weight or draw length with the performance module. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The present disclosure is best understood from the following detailed description when read with the accompanying figures. It is emphasized that, in accordance with the standard practice in the industry, various features are not drawn to scale. In fact, the dimensions of the various features may be arbitrarily increased or reduced for clarity of discussion. 
         FIG. 1  is a perspective view of a compound bow including a performance module consistent with at least one embodiment of the present disclosure. 
         FIG. 2  is an alternative perspective view of the compound bow of  FIG. 1 . 
         FIG. 2A  is a detail perspective view of the riser of  FIG. 1 . 
         FIG. 3A  is a detail view of an arrow chronometer assembly of a performance module consistent with at least one embodiment of the present disclosure with an arrow in a drawn-back position. 
         FIG. 3B  is a detail view of the arrow chronometer assembly of  FIG. 3A  with the arrow at an intermediate position. 
         FIG. 3C  is a detail view of the arrow chronometer assembly of  FIG. 3A  with the arrow at the exit position. 
         FIG. 4  is a schematic view of a compound bow having a performance module consistent with at least one embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     It is to be understood that the following disclosure provides many different embodiments, or examples, for implementing different features of various embodiments. Specific examples of components and arrangements are described below to simplify the present disclosure. These are, of course, merely examples and are not intended to be limiting. In addition, the present disclosure may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. 
       FIG. 1  depicts compound bow  100 . Compound bow  100  may include riser  101 . Riser  101  may be a rigid body and may be formed, for example and without limitation, from aluminum, magnesium alloy, or carbon fiber. Compound bow  100  may include upper limb  103  and lower limb  105  coupled to riser  101 . Upper limb  103  and lower limb  105  may be formed from a flexible material designed to deflect as bowstring  107  is drawn back by a user to store energy used to propel an arrow. Bowstring  107  may be coupled to upper limb  103  and lower limb  105  through upper wheel  109  and lower wheel  111 . In some embodiments, upper wheel  109  and lower wheel  111  may be cam-shaped such that the amount of force required to draw bowstring  107  reduces through the draw stroke. In some embodiments, bowstring  107  may extend around upper wheel  109  and lower wheel  111  and may couple to upper limb  103  and lower limb  105  at the ends of bowstring  107 . 
     In some embodiments, compound bow  100  may include additional components including, for example and without limitation, bow sight  113 , quiver  115 , stabilizer  117 , and spring stop  162  coupled to riser  101 . In some embodiments, compound bow  100  may include cable guard  119  coupled to riser  101 . Cable guard  119  may, for example and without limitation, guide bowstring  107  during a stroke. In some embodiments, compound bow  100  may include grip  121  coupled to riser  101 . Grip  121  may provide an interface between compound bow  100  and a hand of a user. In some embodiments, compound bow  100  may include arrow rest  123  positioned to, for example and without limitation, provide support for arrow  125  during preparation for and during a shooting stroke of compound bow  100 . 
     In some embodiments, compound bow  100  may include performance module  201  as further discussed below. In some embodiments, compound bow  100  may include one or more sensors or transducers positioned to measure certain aspects of the operation of compound bow  100 . For example, in some embodiments, compound bow  100  may include one or more sensors or transducers positioned to measure the draw weight of compound bow  100 , defined as the amount of force necessary to pull bowstring  107  backward during a stroke. For example and without limitation, such sensors may include one or more of limb strain gauges  127  positioned to measure the strain on one or both of upper limb  103  and lower limb  105 , limb-riser gap distance sensor  129  positioned between one or both of upper limb  103  and lower limb  105  and riser  101  to measure the length of the gap therebetween, grip strain gauges  131  positioned between grip  121  and riser  101  to measure the force on riser  101  imparted by the hand of a user, and riser strain gauges  133  positioned to measure the strain on riser  101 . In some embodiments in which a strain gauge is used to measure draw weight, the measured strain may be used with a measured or predetermined spring coefficient for compound bow  100  to determine draw weight. In some embodiments, pressure or force sensor  135  may be positioned to measure pressure on limb adjustment bolt  137 . In some embodiments, compound bow  100  may include one or more sensors positioned in spring stop  162  positioned to, for example and without limitation, determine the speed of bowstring  107  during a shot. Although depicted and described as strain gauges, in some embodiments, a force or pressure sensor other than a strain gauge may be used for one or more of the above-discussed sensors or transducers. 
     In some embodiments, compound bow  100  may include one or more sensors positioned to measure the movement of one or more components of compound bow  100 . For example, in some embodiments, compound bow  100  may include sensor package  139 , which may include one or more sensors for determining movement of compound bow  100  including, for example and without limitation, one or more single or multi-axis accelerometers and gyroscopes. Sensor package  139  may be used, for example and without limitation, to measure the stability of compound bow during a shot including one or more measurements of pitch and yaw of compound bow  100 . In some embodiments, sensor package  139  may be used to measure vibration of compound bow  100  during a shot. In some embodiments, sensor package  139  may be used to determine the balance of compound bow  100 . In some embodiments, sensor package  139  may be integrated into performance module  201  as discussed below. 
     In some embodiments, compound bow  100  may include one or more rotary sensors  141  positioned on one or both of upper wheel  109  and lower wheel  111 . Rotary sensors  141  may, in some embodiments, measure the amount of rotation of upper wheel  109  and/or lower wheel  111  to determine the position of bowstring  107 . In some embodiments, rotary sensors  141  may be used to determine the draw length of compound bow  100 , defined as the distance between the position of bowstring  107  at rest and bowstring  107  when fully drawn back during a shooting action. In some embodiments, rotary sensors  141  may be used to measure the speed at which upper wheel  109  and/or lower wheel  111  rotates during a shot. 
     In some embodiments, compound bow  100  may include one or more sensors for directly determining the speed at which arrow  125  leaves compound bow  100  during a shot. In some embodiments, compound bow  100  may include arrow chronometer assembly  145  positioned at or about arrow rest  123 . In some embodiments, arrow chronometer assembly  145  may include one or more sensors  146  positioned to detect the movement of arrow  125  through arrow chronometer assembly  145  to determine the speed at which arrow  125  leaves compound bow  100 , referred to herein as arrow speed. Sensors  146  may include, for example and without limitation, one or more of magnetic sensors, ultrasonic sensors, or optical sensors. In some embodiments, arrow chronometer assembly  145  may detect the movement of a marker or markers positioned on arrow  125  to determine the speed of arrow  125 . In some embodiments, the marker or markers positioned on arrow  125  may include one or more magnets. In such an embodiment, sensors  146  of arrow chronometer assembly  145  may include one or more electromagnetic sensors such as, for example and without limitation, Hall effect sensors or magnetometers, positioned to determine the passage of the one or more magnetic markers to determine arrow speed. In some embodiments, sensors  146  of arrow chronometer assembly  145  may include one or more distance sensors such as ultrasonic distance sensors used to monitor the movement of arrow  125  over time to determine arrow speed. 
     In some embodiments, sensors  146  of arrow chronometer assembly  145 , as depicted in  FIGS. 2, 2A , may include two or more optical sensors.  FIGS. 2, 2A  depict riser  101  with grip  121 , arrow rest  123 , and other components of compound bow  100  removed for clarity. For example and without limitation, in some embodiments, arrow chronometer assembly  145  may include at least one trailing optical emitter  147 , at least one trailing optical receiver  149 , at least one leading optical emitter  151 , and at least one leading optical receiver  153 . Trailing optical emitter  147  and leading optical emitter  151  may each emit an optical signal such as visible light or infrared light. 
     Trailing optical receiver  149  may be positioned to determine whether a line of sight between trailing optical receiver  149  and trailing optical emitter  147  is blocked by arrow  125 . Likewise, leading optical receiver  153  may be positioned to determine whether a line of sight between leading optical receiver  153  and leading optical emitter  151  is blocked by arrow  125 . Trailing optical receiver  149  and leading optical receiver  153  may each output a signal depending on whether the optical signal from trailing optical emitter  147  and leading optical emitter  151  reaches trailing optical receiver  149  and leading optical receiver  153 , respectively. 
     In some embodiments, while arrow  125  is positioned on arrow rest  123  during, for example and without limitation, preparation for shooting including during the draw stroke, both the line of sight between trailing optical receiver  149  and trailing optical emitter  147  and the line of sight between leading optical receiver  153  and leading optical emitter  151  are blocked by arrow  125  as shown in  FIG. 3A . When bowstring  107  is released during a shooting action, arrow  125  is propelled forward by bowstring  107 , passing through arrow chronometer assembly  145 . Arrow  125  may progress to a position at which trailing end  125   a  of arrow  125  passes through the line of sight between trailing optical receiver  149  and trailing optical emitter  147  as shown in  FIG. 3B , allowing trailing optical receiver  149  to detect the optical signal from trailing optical emitter  147  at a first time (t 1 ). Arrow  125  may continue to move forward until trailing end  125   a  of arrow  125  passes through the line of sight between leading optical receiver  153  and leading optical emitter  151 , as shown in  FIG. 3C , allowing leading optical receiver  153  to detect the optical signal from leading optical emitter  151  at a second time (t 2 ). By measuring the time taken for trailing end  125   a  of arrow  125  to move from the intermediate position depicted in  FIG. 3B  at which the line of sight between trailing optical receiver  149  and trailing optical emitter  147  is opened and the exit position depicted in  FIG. 3C  at which the line of sight between leading optical receiver  153  and leading optical emitter  151  is opened, the arrow speed may be determined using the following formula: 
     
       
         
           
             
               Arrow 
               ⁢ 
               
                   
               
               ⁢ 
               Speed 
             
             = 
             
               d 
               
                 
                   t 
                   2 
                 
                 - 
                 
                   t 
                   1 
                 
               
             
           
         
       
     
     where d is a known distance between trailing optical receiver  149  and leading optical receiver  153  as shown in  FIG. 3C . 
     In some embodiments, with respect to  FIG. 1 , compound bow  100  may include additional components including flashlight  155  positioned to provide illumination in front of compound bow  100 , sight light  157  positioned to provide light onto bow sight  113 , camera  159  positioned to capture a photo or video in front of compound bow  100 , rangefinder  161  positioned to determine the distance between compound bow  100  and an object or target, as well as other accessories. 
       FIG. 2  depicts a perspective view of riser  101  separated from other components of compound bow  100 . In some embodiments, riser  101  may include performance module  201 . In some embodiments, performance module  201  and associated components as discussed further herein below may be integrated into riser  101 . In some embodiments, performance module  201 , as shown in  FIG. 4 , may include processor  203  and processor-readable or computer-readable programming code embodying logic embedded on tangible, non-transitory computer readable media, including instructions for controlling functions of performance module  201 . In some embodiments, performance module  201  may include memory storage medium  204 . 
     In some embodiments, performance module  201  may include display  205 . Display  205  may be used to visually provide information to a user relating to the use of compound bow  100  as further described below. Display  205  may, in some embodiments, include an LED or LCD screen. In some embodiments, display  205  may be a touch screen to allow a user to interact with performance module  201 . In some embodiments, display  205  may be positioned as depicted in  FIG. 2  on a side of riser  101  substantially aligned with a user&#39;s line of sight while using compound bow  100 . However, display  205  may be positioned at any point on compound bow  100  without deviating from the scope of this disclosure. In some embodiments, performance module  201  may include additional user feedback interfaces including, for example and without limitation, audio outputs such as speakers or headphones  210 . In some embodiments, performance module  201  may use an external device such as a mobile device for such interaction. 
     In some embodiments, performance module  201  may include a power storage device, depicted in  FIG. 4  as battery  206 . In some embodiments, battery  206  may be rechargeable while connected to performance module  201 . In some embodiments, battery  206  may be removable from performance module  201  and may be user-replaceable. In some embodiments, battery  206  may be used to provide power to other accessory units of compound bow  100 . Battery  206  may be a primary cell or a secondary cell. In some embodiments, battery  206  may be a lithium ion battery. In some embodiments, performance module  201  may include charging port  208 , shown in  FIG. 2A , to allow battery  206  to be charged. In some embodiments, charging port  208  may be used for wired data connectivity to an external device. 
     In some embodiments, performance module  201  may include one or more user interface devices such as rotary encoder  207 , potentiometer  163 , and button  164 . Rotary encoder  207  may be used, for example and without limitation, to interact with performance module  201 . For example, in some embodiments rotary encoder  207  may be used to change between operating modes of performance module  201 , to enter data into performance module  201 , to change parameters of performance module  201 , to enable or disable features of performance module  201 , or a combination thereof. In some embodiments, performance module  201  may include additional user interface devices including buttons, switches, potentiometers, or other devices known in the art. 
     In some embodiments, performance module  201  may receive information from one or more sensors of compound bow  100 .  FIG. 4  depicts a schematic view of compound bow  100  consistent with at least one embodiment of the present disclosure. In some such embodiments, performance module  201  may receive signals from one or more sensors including, for example and without limitation, draw sensors  209 . Draw sensors  209  may include one or more of limb strain gauges  127 , limb-riser gap distance sensor  129 , grip strain gauges  131 , riser strain gauges  133 , pressure or force sensor  135 , or rotary sensor  141  as discussed above. In some embodiments, performance module  201  may use parameters gathered by draw sensors  209  to determine one or more of if bowstring  107  is being drawn, the draw weight exerted on bowstring  107 , and when a shot has been taken. In some embodiments, performance module  201  may store a draw length manually input by a user. 
     In some embodiments, performance module  201  may use the parameters gathered by draw sensors  209  to determine an arrow speed. In some embodiments, performance module  201  may use the parameters gathered by draw sensors  209  to determine a draw length. 
     In some embodiments, performance module  201  may receive signals from arrow chronometer assembly  145 , allowing performance module  201  to receive or determine the speed at which arrow  125  leaves compound bow  100  during a shot. 
     In some embodiments, performance module  201  may receive signals from sensor package  139 . Performance module  201  may use measurements from sensor package  139  to, for example and without limitation, track movement of compound bow  100  during a shot. Such movement may affect shot placement and accuracy. In some instances, such movement may be a result of improper technique on the part of a user while shooting compound bow  100 . By allowing a user to review measurements from sensor package  139  taken while shooting, a user may be able to identify improper techniques and improve shooting form. In some embodiments, performance module  201  may analyze the measurements from sensor package  139  to identify measurements that correspond with known signs of improper technique including, for example and without limitation, torqueing the bow, dropping the bow arm, flinching, or plucking bowstring  107 . In some embodiments, performance module  201  may analyze the measurements from sensor package  139  and other sensors against a predetermined metric, such that performance module  201  provides a user with an assessment of each shot. In some embodiments, performance module  201  may output the assessment as a score. 
     In some embodiments, performance module  201  may receive information from additional modules including, for example and without limitation, a time-keeping module such as real-time clock  211 . In some embodiments, performance module  201  may receive information from sensors of activity tracker  213 , which may include one or more of a pedometer, altimeter, heart rate monitor, and GPS module. In some embodiments, performance module  201  may display this information using display  205 . 
     In some embodiments, performance module  201  may store and analyze the parameters sensed or measured by draw sensors  209 , arrow chronometer assembly  145 , and sensor package  139 . For example and without limitation, in some embodiments, performance module  201  may use the parameters gathered from draw sensors  209 , arrow chronometer assembly  145 , and sensor package  139  to provide information to a user relating to the operation of compound bow  100 . For example, in some embodiments, performance module  201  may allow a user to review the number of shots taken by compound bow as well as the information relating to draw length, draw weight, arrow speed, and movement of compound bow  100  during a shot using display  205 . In some embodiments, the information provided by performance module  201  may be used to review a shooter&#39;s performance during a previous shot or shooting session. 
     In some embodiments, performance module  201  may store information relating to each shot taken by compound bow  100 . For example and without limitation, in some embodiments, performance module  201  may store one or more of the draw weight, arrow speed, draw length, date and time of shot, measured bow movement, altitude, user heart rate, and location from the GPS module for each shot taken by compound bow  100 . 
     In some embodiments, performance module  201  may allow a user to review such information using display  205 . In some embodiments, performance module  201  may include communications module  215 . Communications module  215  may allow for wired or wireless communication between performance module  201  and one or more external devices such as mobile device  217  as shown in  FIG. 4 . Mobile device  217  may include, for example and without limitation, a tablet, mobile phone, smart watch, computer, external storage device, or any other device. In some embodiments, performance module  201  may transmit information stored therein to mobile device  217  using communications module  215  to, for example and without limitation, allow a user to review and analyze the information using mobile device  217 . 
     In some embodiments, communications module  215  may be used to allow a user to interact with performance module  201  using mobile device  217 . For example and without limitation, in some embodiments, mobile device  217  may be used as an additional display for performance module  201  or may allow a user additional methods of user interaction with performance module  201 . In some embodiments, a user may use mobile device  217  to input information to performance module  201 , to control or change the operating mode of performance module  201 , to control one or more auxiliary devices controlled by performance module  201 , or to otherwise interact with performance module  201  as further described below. 
     In some embodiments, communications module  215  may allow performance module  201  to communicate with other external devices including, for example and without limitation, external activity tracker  219  and external rangefinders  221 . 
     In some embodiments, performance module  201  may use parameters sensed or measured by draw sensors  209 , arrow chronometer assembly  145 , and sensor package  139  to provide suggestions to a user relating to aspects of using compound bow  100 . For example, in some embodiments, performance module  201  may use the calculated draw weight and calculated or user-provided draw length to suggest an arrow spline tailored for the specific configuration of compound bow  100 . 
     In some embodiments, performance module  201  may be used to track operation of compound bow  100  in order to provide suggestions or reminders regarding preventative maintenance or to alert a user that a failure may be imminent. 
     For example and without limitation, in some embodiments, performance module  201  may track the number of shots taken by compound bow  100 . In some embodiments, performance module  201  may have one or more predetermined or user-defined shot thresholds used to determine whether preventative maintenance on compound bow  100  should be undertaken. In some such embodiments, performance module  201  may indicate to a user that preventative maintenance is recommended once the number of shots taken by compound bow  100  reaches or exceeds one or more corresponding shot thresholds. For example and without limitation, performance module  201  may include a bowstring waxing shot threshold, such that performance module  201  suggests to a user that waxing bowstring  107  is recommended once the number of shots taken by compound bow  100  meets or exceeds the bowstring waxing shot threshold. As another nonlimiting example, performance module  201  may include a bowstring replacement shot threshold, such that performance module  201  suggests to a user that replacing bowstring  107  is recommended once the number of shots taken by compound bow  100  meets or exceeds the bowstring replacement shot threshold. Performance module  201  may, in some embodiments, make such suggestions using display  205 . 
     In some embodiments, performance module  201  may use the information from draw sensors  209  and arrow chronometer assembly  145 , i.e. the draw weight of compound bow  100  and the speed at which arrow  125  leaves compound bow  100 , to determine if bowstring  107  is approaching failure. In some cases, before bowstring  107  fails, the performance of bowstring  107  may degrade due to wear of bowstring  107  including, for example and without limitation, fraying or stretching. By monitoring the draw weight and arrow speed for each shot, performance module  201  may identify that the performance of bowstring  107  has degraded, indicating that bowstring  107  may be approaching failure. In some embodiments, performance module  201  may alert a user to the potential failure of bowstring  107  once such a condition has been detected. In some embodiments, performance module  201  may make such an alert using display  205 . For example, in some embodiments, once draw weight reduces beyond a predetermined threshold relative to average draw weight stored by performance module  201 , performance module  201  may alert the user. In some embodiments, the threshold may be between 5% and 30% below the average draw weight measured by performance module  201 . 
     In some embodiments, performance module  201  may be used to control one or more accessories of compound bow  100 . For example and without limitation,  FIG. 4  depicts a schematic view of compound bow  100 . Performance module  201  may be operatively coupled to one or more other components of compound bow  100  including, for example and without limitation, flashlight  155 , sight light  157 , camera  159 , and rangefinder  161 . In some embodiments, performance module  201  may, for example and without limitation, control the operation of these devices, such as, for example and without limitation, turning on or off flashlight  155  and sight light  157  depending on conditions, a user selection, or a selected mode of operation of performance module  201  as further described below. 
     For example, in some embodiments in which compound bow  100  includes camera  159 , performance module  201  may operatively connect to camera  159  and may control the operation of camera  159 . In some embodiments, for example and without limitation, performance module  201  may trigger camera  159  to take one or more photos or a video each time a shot is taken with compound bow  100 . In some such embodiments, a user may configure the number of photos, amount of time between photos, or amount of time for the video to continue after the shot. Such imagery may, for example and without limitation, allow a user to review shot placement for learning purposes after a shooting session, or may allow the user to save or share pictorial or video corroboration of the results of a shot without the need to manually take a picture or video during the shot. 
     As another nonlimiting example, in some embodiments, compound bow  100  may automatically control operation of flashlight  155  and sight light  157  depending on, for example and without limitation, time of day or ambient lighting conditions. In some embodiments, flashlight  155  and/or sight light  157  may be automatically activated after dark or in response to an action of a user such as, for example and without limitation, at the beginning of a draw stroke. 
     In some embodiments, a user may select which functions of performance module  201  to use. In some embodiments, such a selection may be made by allowing a user to select between different operating modes of performance module  201 , in which one or all functions of performance module  201  are selectively enabled. Additionally, in some embodiments, the activity and content of display  205  may be changed to reflect the selected operating mode. For example and without limitation, in some embodiments, performance module  201  may be operated in one or more of a tuning mode, shot tuning mode, coaching mode, target mode, hunting mode, low light mode, minimalist mode, and game mode. These modes and the following discussion thereof are merely examples of possible modes and are not intended to limit the scope of the present disclosure to only the modes mentioned herein. 
     For example, in some embodiments, while performance module  201  is in tuning mode, functions of performance module  201  that relate to physical parameters of compound bow  100  during operation may be enabled and display  205  may be used to predominantly display information useful to a user while tuning compound bow  100 . For example, functions associated with measurement of draw weight, vibration, arrow speed, and balance of compound bow  100  may be enabled and displayed on display  205 . In some embodiments, while in tuning mode, information relating to adjustment of components of compound bow  100  such as positioning of components of arrow chronometer assembly  145  to properly measure the arrow speed may be available. In some embodiments, tuning mode may allow a user to compare performance of compound bow  100  when compound bow  100  is adjusted or configured in different ways or used with different equipment to allow the user to determine what adjustments or configuration best suits the user. In some embodiments, performance module  201  may provide a user with suggestions as to adjustments to be made to compound bow  100  based on the measurements of performance module  201 . 
     In some embodiments, while performance module  201  is in shot tuning mode, functions of performance module  201  that relate to the shooting of compound bow  100  may be enabled and display  205  may be configured to predominantly display information useful to a user while shooting compound bow  100 . For example, display  205  may display information relating to movement of compound bow  100  during a shot, draw weight, and arrow speed. 
     In some embodiments, while performance module  201  is in coaching mode, performance module  201  may operate with one or more functions to assist a user in improving shooting form. In such an embodiment, functions of performance module  201  that relate to measurements of compound bow  100  during a shot may be enabled. Performance module  201  may be configured to display information helpful to a user in improving their shooting form. In some embodiments, performance module  201  may include one or more training functions. For example and without limitation, performance module  201  may provide a user with a signal for releasing bowstring  107  after a time delay after performance module  201  determines that bowstring  107  has been fully drawn back. Performance module  201  may record information relating to movement of compound bow  100  during the delay period and during the subsequent shot, providing the information to the user after the shot is taken. Such an exercise may, for example and without limitation, allow a user to improve stamina and steadiness when holding the bow at full draw. In some embodiments, performance module  201  may provide feedback for shooting form based on measurements of arrow speed and movement of compound bow  100  during the shot when in coaching mode. 
     In some embodiments, while performance module  201  is in target mode, performance module  201  may operate to allow a user to keep track of a score while shooting. In some embodiments, performance module  201  may record information about bow movement and other metrics while in target mode such that a user may, for example and without limitation, review such data as compared to scores to identify improvement in technique over time. 
     In some embodiments, while performance module  201  is in hunting mode, performance module  201  may operate to best suit a user of compound bow  100  when using compound bow  100  for hunting. In some jurisdictions, the use of certain accessories including, for example and without limitation, flashlight  155 , sight light  157 , and rangefinder  161 , may be restricted or prohibited. When in hunting mode, performance module  201  may allow a user to quickly and reliably disable the prohibited accessories, while allowing such accessories to be easily enabled once the user is no longer hunting. 
     In some embodiments, while performance module  201  is in low light mode, performance module  201  may operate to best suit a user of compound bow  100  when in low light conditions. In some embodiments, performance module  201  may automatically enter low light mode depending on conditions including the time of day or by detecting lighting conditions automatically. In some embodiments, performance module  201  may dim or turn off display  205  when in low light mode. In some embodiments, performance module  201  may automatically control operation of illumination accessories such as flashlight  155  and sight light  157  or may provide more ready access to control of such devices to a user when in low light mode. 
     In some embodiments, while performance module  201  is in minimalist mode, display  205  and other feedback of performance module  201  may be disabled, allowing the user to use compound bow  100  as if it were a normal bow without performance module  201 . In some embodiments, any accessories controlled by performance module  201  may be automatically disabled when in minimalist mode. In some embodiments, performance module  201  may continue to record information relating to the use of compound bow  100  while in minimalist mode. 
     In some embodiments, while performance module  201  is in game mode, performance module  201  may enable one or more functions to allow a user to compete with a user of another compound bow having a performance module. In some embodiments, performance module  201  may, for example and without limitation, provide a score or other assessment of each of a user&#39;s shot to allow comparison with another user&#39;s shot on their compound bow. In some embodiments, the performance module  201  of each compound bow  100  may be in communication such that scores are automatically compared to assess the winner of the competition. In some embodiments, performance module  201  may be used to score each shot, and automatically compare the scores between the users during the competition. In some embodiments, game mode may be used between compound bows  100  in real time or in the same location. In some embodiments, game mode may allow a user to compete against a user using compound bow  100  at another time or in another location. In some embodiments, game mode may allow a user to compete against a previous game mode shooting session. 
     In some embodiments, as shown in  FIG. 4 , compound bow  100  may include electronic bow sight  171 . Electronic bow sight  171  may, in some embodiments, use information input into and determined by performance module  201  to adapt the sight picture provided to a user to adjust the point of impact of an arrow released from compound bow  100  based on such information. For example and without limitation, electronic bow sight  171  may adjust the indicated point of impact based on parameters such as, for example and without limitation, shot velocity and arrow weight as discussed herein above. 
     The foregoing outlines features of several embodiments so that a person of ordinary skill in the art may better understand the aspects of the present disclosure. Such features may be replaced by any one of numerous equivalent alternatives, only some of which are disclosed herein. One of ordinary skill in the art should appreciate that they may readily use the present disclosure as a basis for designing or modifying other processes and structures for carrying out the same purposes and/or achieving the same advantages of the embodiments introduced herein. One of ordinary skill in the art should also realize that such equivalent constructions do not depart from the spirit and scope of the present disclosure and that they may make various changes, substitutions, and alterations herein without departing from the spirit and scope of the present disclosure.