Claims:
1. An apparatus (100) for monitoring one or more parameters of a protection relay, the apparatus comprising:
at least one voltage sensor (102) coupled to the protection relay, the voltage sensor (102) configured to generate at least three voltage signals (Va, Vb, Vc) from three phase voltages tapped from a power supply;
at least one current sensor (104) coupled to the protection relay, the current sensor (104) configured to generate at least three current signals (Ir, Iy, Ib) from the power supply;
at least one vibration sensor (106) coupled to the protection relay, the vibration sensor (106) configured to measure dynamic accelerations (Vx, Vy, Vz) associated with the protection relay; and
at least one microcontroller (108) configured to
retrieve the at least three voltage signals (Va, Vb, Vc), the at least three current signals (Ir, Iy, Ib), and the dynamic accelerations (Vx, Vy, Vz),
process the retrieved voltage signals (Va, Vb, Vc), the retrieved current signals (Ir, Iy, Ib), and the retrieved dynamic accelerations (Vx, Vy, Vz), and
generate at least one notification associated with the one or more parameters of the protection relay based on the processed voltage signals (Va, Vb, Vc), the processed current signals (Ir, Iy, Ib), and the processed dynamic accelerations (Vx, Vy, Vz).

2. The apparatus (100) as claimed in claim 1, wherein the at least one microcontroller (108) is communicably coupled to a Bluetooth module (110), the Bluetooth module is configured to transmit the at least one generated notification and receive one or more instructions data packets form a computing device.

3. The apparatus (100) as claimed in claim 2, wherein the Bluetooth module enables a two-way wireless communication between the at least one microcontroller and the computing device.

4. The apparatus (100) as claimed in claim 2, wherein the Bluetooth module enables to control the one or more parameters by receiving the one or more instructions data packets form the computing device.

5. The apparatus (100) as claimed in claim 1, wherein the at least one microcontroller (108) is communicably coupled to a relay driver interface, the relay driver interface is configured to supply one or more parameters to operate the protection relay.

6. The apparatus (100) as claimed in claim 1, wherein the at least one vibration sensor (106) comprise of an accelerometer sensor.

7. The apparatus (100) as claimed in claim 1, wherein the at least one microcontroller (108) comprises of a TIVA Launchpad TM4C123G.

8. The apparatus (100) as claimed in claim 1, wherein the at least one notification is generated in real-time.

9. A microcontroller based electronic device for monitoring one or more parameters of a protection relay configured to retrieve at least three voltage signals (Va, Vb, Vc), at least three current signals (Ir, Iy, Ib), and dynamic accelerations (Vx, Vy, Vz), process the retrieved voltage signals (Va, Vb, Vc), the retrieved current signals (Ir, Iy, Ib), and the retrieved dynamic accelerations (Vx, Vy, Vz), and generate at least one notification associated with the one or more parameters of the protection relay.

10. The apparatus (100) as claimed in claim 1, wherein:
the at least three voltage signals (Va, Vb, Vc) are generated by at least one voltage sensor (102) coupled to the protection relay from three phase voltages tapped from a power supply;
the at least three current signals (Ir, Iy, Ib) are generated by at least one current sensor (104) coupled to the protection relay from the power supply; and
the dynamic accelerations (Vx, Vy, Vz) are generated by at least one vibration sensor (106) coupled to the protection relay.

, Description:
TECHNICAL FIELD
[0001] The present disclosure relates to motor protection relays, and more specifically relates to, a motor protection relay with wireless communication bluetooth for parameter monitoring, sensor interface to measure vibration of motor, which is important while troubleshooting.

BACKGROUND
[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[0003] Because of the increasing advances in technology, smart systems are increasingly being used. These systems allow technicians, administrators, and managers to monitor and control the performance of devices from a safe distance. The monitoring system is very important when working in the ?eld of three phase systems; some users and companies use smart monitoring software programs. These programs are installed on the user’s smartphone or company computers to allow employers to make decisions if there is an error.
[0004] Electric motors are major operands of any industry. When motor is in running condition, it’s parameters like voltage, current, vibration and power factor etc. may vary as per the varying load and input conditions. Therefore, it is essential to monitor these parameters.
[0005] Efforts have been made in related art to address above stated problem by using a parameter monitoring system. An example of such parameter monitoring system is recited in Korean patent application number 1020090020481A, entitled “Protection relay”. The patent discloses the different options of wireless parameter monitoring of three-phase induction motor (Wi-Fi, ZigBee, and Bluetooth). Undergone through different websites and then we decided to design a system, which can protect motor in case of any abnormality in supply voltage and load conditions. The invention discloses an integrated protection controller for a wireless intelligent motor. The integrated protection controller comprises a DSP processing center, a power supply, a DI input unit, a DO output unit, a dot-matrix color LCD, a ZigBee wireless network, a 485 bus communication network, a 232 serial communication network, an AO output unit and a keyboard; wherein the ZigBee wireless network, the 485 bus communication network and the 232 serial communication network are respectively connected with the centralized control, monitor and display device of an upper computer. This patent gives us an idea about the various parameters that need to be monitored regularly for safety, reliability. Another example of such parameter monitoring system is recited in United States patent application number 20180129194A1, entitled “Wireless communication enabled relay”. The patent discloses uncover the different options of wireless parameter monitoring of three-phase induction motor (Wi-Fi, ZigBee, and Bluetooth). Undergone through different websites and then we decided to design a system, which can protect motor in case of any abnormality in supply voltage and load conditions. Detachable HMI protective relay according to the present invention, the relay unit, controlling the relay operation of the relay unit, and displays the status of the relay unit, the HMI (Human Machine Interface) detachably mountable relative to the relay unit to perform a relay operation. It is configured to include Relays, removable, HMI.
[0006] However, the prior-art does not log all the data related to events, metering, protection etc. Further, there is no portable device available in market to monitor and control data.
[0007] Whereas there is certainly nothing wrong with existing techniques or system, nonetheless, there still exists a need to provide an efficient, effective, reliable and improved motor protection relay with wireless communication for parameter monitoring based on various measurements such as but not limited current, voltage and vibrations of motor, which may be considered as important, if not essential, monitoring features while troubleshooting. Further, there exists a need of cost effective a motor protection relay for more secure monitoring and controlling of induction motor. Furthermore, there is a need of an effective portable device like mobile application to monitor and control of three-phase induction motor.
[0008] All publications herein are incorporated by reference to the same extent as if each individual publication or patent application were specifically and individually indicated to be incorporated by reference. Where a definition or use of a term in an incorporated reference is inconsistent or contrary to the definition of that term provided herein, the definition of that term provided herein applies and the definition of that term in the reference does not apply.
[0009] In some embodiments, the numbers expressing quantities of ingredients, properties such as concentration, reaction conditions, and so forth, used to describe and claim certain embodiments of the invention are to be understood as being modified in some instances by the term “about”. Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable. The numerical values presented in some embodiments of the invention may contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
[00010] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[00011] The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g. “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
[00012] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all groups used in the appended claims.

SUMMARY
[00013] The present disclosure relates to motor protection relays, and more specifically relates to, a motor protection relay with wireless communication bluetooth for parameter monitoring, sensor interface to measure vibration of motor, which is important while troubleshooting
[00014] Accordingly, an aspect of the present disclosure relates to an apparatus for monitoring one or more parameters of a protection relay. The apparatus can include at least one voltage sensor, at least one current sensor, at least one vibration sensor and at least one microcontroller. The voltage sensor can be coupled to the protection relay, the voltage sensor (102) configured to generate at least three voltage signals (Va, Vb, Vc) from three phase voltages tapped from a power supply. The current sensor can be coupled to the protection relay. The current sensor generates at least three current signals (Ir, Iy, Ib) from the power supply. The vibration sensor can be coupled to the protection relay, the vibration sensor (106) configured to measure dynamic accelerations (Vx, Vy, Vz) associated with the protection relay. The microcontroller can retrieve the at least three voltage signals (Va, Vb, Vc), the at least three current signals (Ir, Iy, Ib), and the dynamic accelerations (Vx, Vy, Vz) and process the retrieved voltage signals (Va, Vb, Vc), the retrieved current signals (Ir, Iy, Ib), and the retrieved dynamic accelerations (Vx, Vy, Vz). The microcontroller generates at least one notification associated with the one or more parameters of the protection relay based on the processed voltage signals (Va, Vb, Vc), the processed current signals (Ir, Iy, Ib), and the processed dynamic accelerations (Vx, Vy, Vz).
[00015] In an aspect, the at least one microcontroller can be communicably coupled to a Bluetooth module. The bluetooth module transmits the at least one generated notification and receive one or more instructions data packets form a computing device.
[00016] In an aspect, the bluetooth module enables a two-way wireless communication between the at least one microcontroller and the computing device.
[00017] In an aspect, the Bluetooth module enables to control the one or more parameters by receiving the one or more instructions data packets form the computing device.
[00018] In an aspect, the microcontroller can be communicably coupled to a relay driver interface, the relay driver interface is configured to supply one or more parameters to operate the protection relay.
[00019] In an aspect, the vibration sensor can include an accelerometer sensor.
[00020] In an aspect, the microcontroller can include a TIVA Launchpad TM4C123G.
[00021] In an aspect, one notification can be generated in real-time.
[00022] An aspect of the present disclosure relates to a microcontroller based electronic device for monitoring one or more parameters of a protection relay configured to retrieve at least three voltage signals (Va, Vb, Vc), at least three current signals (Ir, Iy, Ib), and dynamic accelerations (Vx, Vy, Vz), process the retrieved voltage signals (Va, Vb, Vc), the retrieved current signals (Ir, Iy, Ib), and the retrieved dynamic accelerations (Vx, Vy, Vz), and generate at least one notification associated with the one or more parameters of the protection relay.
[00023] In an aspect, three voltage signals (Va, Vb, Vc) can be generated by at least one voltage sensor coupled to the protection relay from three phase voltages tapped from a power supply.
[00024] In an aspect, at least three current signals (Ir, Iy, Ib) are generated by at least one current sensor coupled to the protection relay from the power supply.
[00025] In an aspect, the dynamic accelerations (Vx, Vy, Vz) are generated by at least one vibration sensor coupled to the protection relay.
[00026] Various objects, features, aspects and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

BRIEF DESCRIPTION OF THE DRAWINGS
[00027] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. The diagrams are for illustration only, which thus is not a limitation of the present disclosure, and wherein:
[00028] FIG. 1 illustrates a block diagram of a proposed system, in accordance with an exemplary embodiment of the present disclosure.

DETAILED DESCRIPTION
[00029] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure as defined by the appended claims.
[00030] If the specification states a component or feature “may”, “can”, “could”, or “might” be included or have a characteristic, that particular component or feature is not required to be included or have the characteristic.
[00031] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[00032] Exemplary embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown. These exemplary embodiments are provided only for illustrative purposes and so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those of ordinary skill in the art. The invention disclosed may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Various modifications will be readily apparent to persons skilled in the art. The general principles defined herein may be applied to other embodiments and applications without departing from the scope of the invention. Moreover, all statements herein reciting embodiments of the invention, as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. Additionally, it is intended that such equivalents include both currently known equivalents as well as equivalents developed in the future (i.e., any elements developed that perform the same function, regardless of structure). Also, the terminology and phraseology used is for the purpose of describing exemplary embodiments and should not be considered limiting. Thus, the present invention is to be accorded the widest scope encompassing numerous alternatives, modifications and equivalents consistent with the principles and features disclosed. For purpose of clarity, details relating to technical material that is known in the technical fields related to the invention have not been described in detail so as not to unnecessarily obscure the present invention.
[00033] Each of the appended claims defines a separate invention, which for infringement purposes is recognized as including equivalents to the various elements or limitations specified in the claims. Depending on the context, all references below to the "invention" may in some cases refer to certain specific embodiments only. In other cases it will be recognized that references to the "invention" will refer to subject matter recited in one or more, but not necessarily all, of the claims.
[00034] All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
[00035] Various terms as used herein are shown below. To the extent a term used in a claim is not defined below, it should be given the broadest definition persons in the pertinent art have given that term as reflected in printed publications and issued patents at the time of filing.
[00036] The present disclosure relates to motor protection relays, and more specifically relates to, a motor protection relay with wireless communication bluetooth for parameter monitoring, sensor interface to measure vibration of motor, which is important while troubleshooting.
[00037] However, the prior-art does not log all the data related to events, metering, protection etc. Further, there is no portable device available in market to monitor and control data.
[00038] The present invention provides a motor protection relay with wireless communication bluetooth for parameter monitoring, sensor interface to measure vibration of motor, which is important while troubleshooting. The proposed invention provides cost effective a motor protection relay for more secure monitoring and controlling of induction motor. The proposed invention provides an effective portable device like mobile application to monitor and control of three-phase induction motor.
[00039] An aspect of the present disclosure relates to a proposed system to monitor one or more parameters wirelessly by using UART (Bluetooth) communication. The proposed system can include an OPAMP based circuitry, and ADC. OPAMP based circuitry can be used to generate the voltage and current signals and latter ADC of microcontroller can be used to convert analog voltages into digital value for further processing by microcontroller. Sometimes electrical wiring is inaccessible to user due to field constraint and difficult to measure the electrical parameters on board so wireless monitoring can be done.
[00040] FIG. 1 illustrates a block diagram of a proposed system, in accordance with an exemplary embodiment of the present disclosure.
[00041] In an embodiment, the proposed system can be designed using the TIVA Launchpad TM4C123G as a microcontroller 108 to read and calculate the RMS voltage, current and vibration from sensors units. The TIVA Launchpad TM4C123G is an open source platform that is very cheap, ?exible, and has special-purpose data processing capabilities.
[00042] A voltage measurement design 102 is operational amplifier based. Initially a voltage divider can be used to down convert the three-phase voltage to minimum range and then it ampli?es the signals using a LM358 IC (Texas Instruments).
[00043] A current sensor unit 104 can be designed using current transformer of ratio 1:2500. Three phase wires (R, Y, B) of motor supply passed through the primary winding of current transformer. The current transformer down converts the primary current to secondary current by the ratio of 1:2500. Burden resistance of 130 OHM is connected across secondary winding of transformer, which converts secondary voltage to current. Further, the amplifier using LM358 OPAMP amplifies this voltage.
[00044] For sensing the vibration an accelerometer or other types of vibrational sensor 106 can be used. All voltage, current and vibration units are isolated, very cheap, and easy to use. The last part in the control system is a Bluetooth module HC-05 110. The Bluetooth module HC-05 106 can serves as two-way wireless communication unit placed between the microcontroller 104 and the end user. If everything is designed properly then this wireless monitoring method can be a great boon to the industry.
i. The hardware setup consists of mainly
ii. Voltage module for voltage sensing
iii. Current module for current sensing
iv. Relay interfacing
v. Bluetooth module interfacing
vi. Vibration sensor interfacing
vii. Power Supply
Voltage Module
In an embodiment, three phase voltages Va, Vb and Vc can be tapped from motor supply and given to voltage module 102. Phase to neutral voltage (240VAC) is given as input to voltage module. Voltage divider of voltage module can down convert a voltage such that it does not exceed the dynamic range (maximum 3.3V) of ADC 108-1 of microcontroller 108. This voltage can then amplify with the help of Non-Inverting summing amplifier. Voltage reference of 1.65V is added at non-inverting terminal to maintain unipolar output at input of ADC. Therefore, when no input is there then ADC reads constant DC of 1.65VDC and when three phases is available corresponding down converted peak-to-peak voltage superimposed on 1.65V reference voltage.

Current Module Interface:
The current sensor unit 104 can be designed using current transformer of ratio 1:2500. Three phase voltage wires passed through the primary of current transformer, which acts as a primary winding. The current transformer down converts the primary current to secondary current by the ratio of 1:2500. Burden resistance of 130 OHM is connected across secondary winding of transformer, which converts secondary voltage to current. Further, the amplifier using LM358 OPAMP amplifies this voltage. The circuit generates three current signals (Ir, Iy, Ib) and given to inbuilt ADC of microcontroller TM4C123G 102.
Vibration Sensor interface:
Mechanical and electrical defects can be identified through vibration analysis. Analysis of vibrations on Induction motors is essential to find out electrical issues causing mechanical vibrations. Vibration analysis uses the accelerometer 106. The benefits of the accelerometer 106 include linearity over a wide frequency range and a large dynamic range. Accelerometers are typically placed at key locations on the motor. An accelerometer 106 is a sensor that measures the dynamic acceleration of a physical device as a voltage. Most accelerometers rely on the use of the piezoelectric effect, which occurs when a voltage is generated across certain types of crystals as they are stressed. Accelerometer 106 can be permanently mounted onto the motor housing so vibration data can be captured and further signal conditioning of the vibration data-using OPAMP based circuitry can be given to the Microcontroller ADC 108, the microcontroller 108 collects the data of Vibration sensor 106 for further processing. This can provide the best detection of all vibration components including Rotor vibration, unbalance, misalignment, electrical faults, and aerodynamic disturbances etc. Three common mounting methods for accelerometer used are Handheld or probe tips, Magnetic, Adhesive and Stud mount etc. Axis accelerometer MMA 7361 104 can be interfaced for sensing the motor shaft vibration. It gives analog output, which is given to the internal ADC 108-3 of microcontroller.

Relay Driver Interface:
The relay driver interface can be connected to the port B pin1 of TIVA C board. The supply to the system can be given through this relay circuit so that in abnormalities it can be operated.
Bluetooth Module Interface:
The Bluetooth HC05 module 110 can be used as the wireless communication device between the microcontroller and the end user (smartphone device). The bluetooth model 110 can be connected directly to the TIVA Launchpad TM4C123G.
Power Supply:
The power supply can be small 12V Battery operated device where 5V is generated using LM7805 linear regulator as shown in below schematic. 5V derived from this circuit is used in signal conditioning section of voltage and current. Similarly, 3.3V required for microcontroller operation is derived using LM1117 IC.
1.65V reference voltage generation-
At the input of voltage module, peak-to-peak motor supply AC voltage is down converted and is given to ADC input of the microcontroller with addition of 1.65V reference voltage by the non-inverting input of summing amplifier to make the unipolar signal between 0 to 3.3V maximum.
[00045] In another embodiment, in the proposed system multiple events and trip records, alarm and pickups can be logged. Also the metering data, protection data all sensors data such as temperature, relative humidity, vibration can be logged.
[00046] In another embodiment, the proposed system provides a portable device that can to monitor and control data. The proposed portable device is very cost effective and does not necessarily required separate HMI to serve minimum functionality.
[00047] The foregoing description of the specific embodiments will so fully reveal the general nature of the invention that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation.
[00048] It should be apparent to those skilled in the art that many more modifications besides those already described are possible without departing from the inventive concepts herein. Moreover, in interpreting both the specification and the claims, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms “comprises” and “comprising” should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, or utilized, or combined with other elements, components, or steps that are not expressly referenced. Where the specification claims refers to at least one of something selected from the group consisting of A, B, C ….and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc. The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the scope of the appended claims.
[00049] While embodiments of the present disclosure have been illustrated and described, it will be clear that the disclosure is not limited to these embodiments only. Numerous modifications, changes, variations, substitutions, and equivalents will be apparent to those skilled in the art, without departing from the scope of the disclosure, as described in the claims.
[00050] In the description of the present specification, reference to the term "one embodiment," "an embodiments", "an example", "an instance", or "some examples" and the description is meant in connection with the embodiment or example described The particular feature, structure, material, or characteristic included in the present invention, at least one embodiment or example. In the present specification, the term of the above schematic representation is not necessarily for the same embodiment or example. Furthermore, the particular features structures, materials, or characteristics described in any one or more embodiments or examples in proper manner. Moreover, those skilled in the art can be described in the specification of different embodiments or examples are joined and combinations thereof.
[00051] All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and/or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and/or steps are mutually exclusive.
[00052] Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features.
[00053] The invention is not restricted to the details of the foregoing embodiment(s). The invention extends to any novel one, or any novel combination, of the features disclosed in this specification (including any accompanying claims, abstract and drawings), or to any novel one, or any novel combination, of the steps of any method or process so disclosed.
[00054] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.