The present invention relates to a leg before wicket (LBW) detection system in cricket. More
particularly, the leg before wicket (LBW) detection system in cricket having a sensing
mechanism, that enables to provide precision and consistency with an LBW decision.
Background of the Invention:
Leg before wicket (LBW) is one of the ways in which a batsman can be dismissed in the sport
of cricket. Following an appeal by the fielding side, the umpire may rule a LBW out if
the ball would have struck the wicket. For LBW decision making, the umpire takes
approximately 2-3 min per LBW decision with obvious human errors. No current technology
available for monitoring LBW and generally the decision is made manually. The umpire's
decision depends on several criteria, including where the ball pitched, whether the ball hit in line
with the wickets and whether the batter was attempting to hit the ball.
Thus there is a need for an automatic detection system to save time and cost. As compared to the
prior arts, the current system is accomplished with open micro-controller and sensors, which is
relatively inexpensive and having high efficiency. Therefore, the present invention is more cost- effective and industrially viable. The sensor helps in fast detection with quick retrieval of signals
that help in time-saving and also provides accuracy and precision for every LBW decision.
3
Object of the invention:
The primary object of the present invention is to propose a leg before wicket (LBW) detection
system in cricket.
Another object of the present invention is to provide an efficient system for monitoring the
distance range for LBW decision as per cricket rule.
Yet another object of the present invention includes an impact sensor, a range sensor, and an
ultrasonic sensor, a receiving device having an Arduino, a battery, and a wireless
transmitter/receiver. Additional objects, advantages, and novel features of the invention will be set forth in part in the
description which follows, and in part will become apparent to those skilled in the art upon
examination of the following or may be learned by practice of the invention.
Summary of the invention:
The following summary is provided to facilitate an understanding of some of the innovative
features unique to the disclosed embodiments and is not intended for the full description of the
invention. A full appreciation of the various aspects of the preferred embodiments disclosed
herein can be gained by taking the entire specification, claims, drawings, and abstract as a whole.
The instant invention is developed as a leg before the wicket (LBW) detection system in cricket
having a sensing mechanism to help in LBW decision making. The present invention comprises an impact sensor, a range sensor, an ultrasonic sensor, and a
receiving device having an Arduino, a battery, and a wireless transmitter/receiver.
4
In another aspect of the present invention is to provide the system with a sensor mechanism that
helps in quick retrieval of signals to save the time and also provides accuracy for each LBW
decision.
Other features and advantages of the present invention will become more apparent from the
following detailed description, taken in conjunction with the accompanying drawings which
illustrate, by way of example, the principles of the invention.
Brief description of the accompanying drawings:
The drawings described herein are for illustrative purposes only of selected embodiments and not
all possible implementations and are not intended to limit the scope of the present disclosure.
The invention itself, however, both as to organization and method of operation, may best be
understood by reference to the detailed description which follows taken in conjunction with the
accompanying drawings in which:
Figure 1 illustrates a diagram of the leg before wicket (LBW) detection system in cricket, in
accordance with the present invention. Detailed description of the invention:
The preferred embodiments will now be described more fully with reference to the
accompanying drawings. The embodiments are provided so that this disclosure will be thorough,
and will fully convey the scope to those who are skilled in the art. Numerous specific details are
set forth as specific components, devices, and methods, to provide a thorough understanding of
preferred embodiments of the present disclosure. It will be apparent to those skilled in the art that
specific details need not be employed, that preferred embodiments may be embodied in many
5
different forms, and that neither should be construed to limit the scope of the disclosure. In some
example embodiments, well-known processes, well-known device structures, and well-known
technologies are not described in detail.
Definitions of the used terms: The following definitions should be interpreted in consideration
of the disclosure and for a better understanding of the present invention to a person skilled in the
art. In the complete disclosure of the present invention, certain scientific and electrical terms
appropriately used, having the same meaning as practically and theoretically understood by an
ordinary person skilled in the art.
Sensor: The term “Sensor” used herein refers to the device that converts the physical parameter
(for example temperature, blood pressure, humidity, speed, distance etc.) into a signal which can
be measured electrically.
Microcontroller: The term “Microcontroller” used herein refers to the self-contained
computer-on-a-chip that can be used as an embedded system.
IR sensor: The term “IR sensor” used herein refers to an electronic instrument that is used to
sense certain characteristics of its surroundings.
Ultrasonic sensor: The term “Ultrasonic sensor” used herein refers to US sensors that measure
the distance of a target object by emitting ultrasonic sound waves, and converts the reflected
sound into an electrical signal.
In describing the preferred embodiments of the present invention, reference will be made herein
to Figures 1 of the drawing which explains the features of the invention.
6
One embodiment of the proposed invention is related to a leg before wicket (LBW) detection
system in cricket, comprises an impact sensor, a range sensor, an ultrasonic sensor, and a
receiving device having an Arduino, a battery, and wireless transmitter/receiver. Figure 1 shows
a system arrangement suitable for performing the desired function of the invention. The impact
sensor and the range sensor are attached to the pads of the batsman. The number of ball hits to
the batsman pad can turn mechanical quantity into electricity. The range sensor detects, whether
ball impacts in the range within distance fixed for making LBW decision. The ultrasonic sensor
detects, whether the ball impacts in the range with the stumps i.e. in the stump line. The receiver
device includes an open-source electronics platform Arduino, which can read inputs, a battery, and a wireless transmitter/receiver. The Range Sensor combines with an ultrasonic sensor to
detect the objects from approximately 5 cm to 255 cm.
Another embodiment of the present invention is related to the working mechanism of the system.
As shown in Figure- 1, the working principle is based on sensing of the hits by the ball and
monitoring the distances range for LBW decision as per cricket rules. When the batsman is being
hit by the ball on the pads, the impact sensor senses the collision and transfers the signal to the
range sensor. The range sensor detects whether the pads are within the described distance range
for LBW decision as per Cricket rules. After getting the confirmation of the in-range placement
of pads, the range sensor transfers the signal to the ultrasonic sensor placed on the stumps. If the
above condition satisfies, the feedback signal is then transferred to the receiving device carried
by the umpire, which flashes the RED signal when ‘LBW-OUT’ and GREEN signal when
‘LBW-NOT OUT’.
7
The present invention provides significant advantages for making quick LBW decisions with
precision and accuracy. The present invention also saves time and reduces the cost inferred in the
advertisement that flashes in between the telecast.
Although a preferred embodiment of the invention has been illustrated and described, it will at
once be apparent to those skilled in the art that the invention includes advantages and features
over and beyond the specific illustrated construction. Accordingly, it is intended that the scope of
the invention be limited solely by the scope of the hereinafter appended claims, and not by the
foregoing specification when interpreted in light of the relevant prior art.