TECHNICAL FIELD [0001] The present subject matter relates generally to motor vehicles, and more particularly to a master control unit assembly accommodated on the motor . vehicles.
BACKGROUND [0002] Generally, a motor vehicle includes an internal combustion engine and/or an electric motor, which is also referred to as traction motor, that are used for providing motion to the vehicle. Generally, the internal combustion engine is operated or controlled by a purely mechanical system or an electronic system or a combination of both. For example, the IC can be operated by a carburetor that is mechanical in nature or using a fuel injector system that typically requires electronic control. However, the traction motor, which is electrical component, requires control using an electronic master control device. Therefore, either in a hybrid vehicle incorporating an IC engine and a traction motor or in an electric ^em^le..mcorporating..only_a-traction.-motor,_the-master.-control-device-plays-a-crucial role.
BRIEF DESCRIPTION OF THE DRAWINGS [0003] The detailed description of the present subject matter is described with reference to the accompanying figures. Same numbers are used throughout the drawings to reference like features and components.
[0004] Fig. 1 illustrates a left side view of an exemplary vehicle, in accordance with an embodiment of the present subject matter. [0005] Fig. 2 illustrates an isometric view of housing, in accordance with an embodiment of the subject matter.
[0006] Fig 3 illustrates a partially exploded view of the housing, in accordance with an embodiment of the present subject matter. [0007] Fig. 4 depicts a perspective view of the master control unit assembly, in accordance with the embodiment as depicted in Fig. 3.
[0008] Fig. 5 depicts a partial master control unit assembly, in accordance with the embodiment of Fig. 3.

[0009] Fig. 6 depicts another perspective view of the master control unit assembly, in accordance with the embodiment of Fig. 3.
[00010J Fig. 7 depicts a side view of the housing, in accordance with the embodiment as depicted in Fig. 3.
DETAILED DESCRIPTION [00011] Generally, every motor vehicle incorporating an electric motor that acts as one of the prime movers of the vehicle has to controlled and operated by a master control unit. For example, in case of a hybrid vehicle, the electric motor and an internal combustion (IC) engine act as prime movers operated depending on requirement by the user. The electric motor and IC engine can be operated independently, at the same time, or one subsequent to another depending on power or mileage requirements by the user. The aforementioned functions are controlled by a master control unit.
[00012] Typically, electric vehicles or hybrid vehicles incorporated with such aforementioned electric motor that act as a prime mover is provided with a high capacity battery or high capacity battery packs for driving the electric motor. The master control unit is capable of converting the voltage from the high capacity battery, which is direct current (DC) voltage, into alternating current (AC) voltage for driving the electric motor that is for example a three phase AC electric motor. The master control unit provides the required speed and torque by varying the current that is being sent to the electric motor. The master control unit that acts as an inverter includes plurality of MOSFETs that are used for switching the three phase AC electric motor and for controlling the current flow. Moreover, the master control unit enables charging of battery from the electric motor that is functioning in generation mode during which high currents close to 5-10Amps is generated. Thus, the master control unit operating with the high currents for operating the electric motor and for charging the battery is subject to heating. Also, the master control unit receives various signals from the user and also status signals from the various systems of the vehicle to evaluate the operation of the system of the vehicle. For example, the master control unit receives various input signals from user like throttle input, brake input, or ignition input, and

various signals from the systems of the vehicle like the position sensor data from electric motor, position sensor of crankshaft, battery state of charge (SoC), or other diagnostic data. Thus, the master control unit takes critical input signals from the user and the vehicle for reliable operation of the vehicle. Moreover, the
5 master control unit includes a DC to DC converter unit for operating the vehicle loads that operate at lower voltage compared to the electric motor operating as prime mover. Further, the master control unit also controls the ignition control in vehicles incorporating the IC engine. Also, the master control unit performs additional operations like the signal conditioning, communicating with the digital
0 console, communicating with safety system like ABS, and communicating with the communication systems like global positioning system (GPS). Therefore, the master control circuit acts as brain for the motor vehicle for controlling over all operation of the vehicle. [00013] Therefore, such a master control unit is a very essential system of the
5 vehicle that is to be securely and reliably accommodated in the motor vehicle. Especially, in securely and reliable accommodating such master control unit in a two-wheeled or a three-wheeled vehicle is challenge as the vehicle is compact and is having an exposed layout when compared to a four-wheeled vehicle. Therefore, the master control unit should be securely packaged to avoid entry of
10 water or moisture. Moreover, the master control circuit operates at high currents that are carried by thick current carrying cables that are to be securely connected to avoid any short circuits or un-safe incidents like fire. Moreover, such master control unit employed in a vehicle is subject to vibrations during operation of the vehicle that could affect mounting of the master control unit and could result in
'.5 loosening or part failure. Additional challenge being, the weight of the master control unit/casing is to be reduced so as to reduce the own weight of the unit to improve secure mounting thereof.
[00014] Especially, the master control unit includes multiple semiconductor and other components that are soldered and embedded. Especially, the master
P0 control unit becomes bulkier and complex as it accommodates multiple components that are used for processing power, and signals. Such a bulkier

assembly provides a challenge in order to accommodate in a compact vehicle like a two-wheeled vehicle. Further, the assembly is prone to complete failure if there is a short of any single component that requires replacement of entire board. Similarly, the assembly requires mounting on an elongated casing that requires additional covers that cover the entire assembly. Moreover, casting of bigger casing components is also a challenge in order to accommodate such a complex assembly. Additionally, securing such an assembly requires additional fasteners and mountings that would complicate the manufacturing process and also assembly and disassembly becomes a challenge. Further, the master control unit deals with high current carrying currents and information related signal cables that are to be carefully secured thereof. Also, the current carrying cables get heated up higher compared to signal cables thereby the consolidated routing of the cables results in poor heating. As failure of any of the cable connection may result in safety related issue of the vehicle or results in stalling of the vehicle. [00015] Hence, an objective of the present subject matter is to provide a compact and rigid master control unit assembly that can be compactly and securely mounted to the motor vehicle.
[00016] It is a feature of the present subject matter that the master control unit assembly includes plurality of printed circuit boards that form the physical circuit forming the master control unit. The 'printed circuit board (PCB)' is interchangeably referred to as 'board' for brevity. The plurality of boards includes a first board and a second board that are disposed adjacent to each other defining a gap therebetween. Semiconductor components being mounted to at least one of the first board and the second board are disposed at a gap formed therebetween. The term gap herein typically refers to a space formed between the faces of the boards. The boards are disposed in tiers. In other words, the boards are disposed one above other. Thus, the assembly provides optimum length. [00017] The plurality of boards is physically/mechanically connected to each other through a spacer that is capable of providing desired spacing between the components and is acting as a support structure. Thus, the master control unit

assembly can be formed as a single unit with all the semiconductor and
electrical/electronic components selectively disposed on the boards.
[00018] It is a feature that the master control unit assembly includes at least
one second port that is capable of being connected to one or more signal cables
and at least one first port that is capable of being connected to the high current
carrying cables that are connected to a magneto or a traction motor for carrying
high currents. It is a feature that the second port and first ports are separately
disposed to provide the clear separation between the components to enables heat
dissipation.
[00019] In one implementation, the present subject matter provides a first
board that is used as a signal board and a second board that is used as a power
board. Therefore, the first board is provided with the second port disposed on one
side of the master control unit assembly and positioned between the
clearance/gap formed between the first board and second board. Similarly, the
first port is mounted to the second board and is disposed on another side of the
assembly and is positioned between the gap/clearance formed between the
boards. It is a feature that the ports are optimally distributed among the boards
thereby reducing physical and electrical load on a single board.
[00020] It is feature that, in a preferred implementation, the first board and
the second board is disposed parallel to each other and the assembly is slidably
mountable to a chassis of the housing. The board is substantially having a sheet
shaped cross-section with substantially two sides and said boards disposed
parallel to each other have a face of first board opposite to a face of the second
board.
[00021] It is an aspect that the chassis can be an extruded by metal structure
which is preferably made of thermally conducting material including Aluminium.
The chassis is provided with slots for slidably mounting the assembly as a single
unit.
[00022] It is another aspect that the boards are electrically interconnected to
each other using plurality of connectors that are detachable type. For example,
the first board is provided with a male portion of the connector and the first port

is provided with a female portion of the connector whereby the electrical connection is established in assembled condition and the connectors provide ease of disassembly.
[00023] Further, the master control unit assembly includes a sensor interface unit referred to as a third board. The third board is substantially smaller than the first board and the second board. The third board is disposed between the first board and the second board.
[00024] Furthermore, the third board is preferably soldered to one of the boards and is detachably coupled to the other board(s) using the detachable connectors.
[00025] It is an aspect the power board is provided with plurality of
semiconductor switching devices/electronic components including MOSFETs.
The MOSFETs and other components are soldered with the body of the
components disposed between the gaps formed between the boards. Therefore,
~the master control unit assembly provides a compact assembly.
[00026] It is a feature that the semiconductor components include a heat sink ■
connecting portion that can be connected to a cooling bar. The assembly is
capable of accommodating cooling bars that are elongated type extending along
at least a portion of the assembly. The cooling bar is preferably a metallic bar that
is disposed between the gaps formed between the board(s).
[00027] It is an aspect that the spacers disposed between two adjacently
disposed boards includes at least three spacers. A first spacer is disposed in proximity to the central portion of the boards. Further, a second spacer and a third spacer are disposed away from the center of the board(s). In one implementation, the second spacer and the third spacer are diagonally disposed at opposite ends. In another implementation, the second spacer and the third spacer are disposed on same side, wherein all the three spacer forms a triangular pattern. Thus, the spacers provide structurally rigid board assembly.
[00028] It is another feature that the boards are connected to the spacers using fasteners or bolts whereby the boards can be detached. Therefore, the master

■ control unit assembly can be slidably removable from the chassis and each of the board can be detachable both electrically and mechanically. [00029] It is an advantage that the master control unit assembly provides compact assembly that is disposed in a chassis and one or more openings of the chassis are covered by covers that provide water tight and moist tight seal. [00030] The aforesaid and other advantages of the present subject matter would be described in greater detail in conjunction with the figures in the following description.
[00031] Fig. 1 illustrates a left side view of an exemplary motor vehicle 100, in accordance with an embodiment of the present subject matter. The vehicle 100 illustrated, has a structural member 105. In the present embodiment, the structural member is a step-through type structural memberl05 that includes a head tube 105A, and a main frame 105B that extend rearwardly downward from an anterior portion of the head tube 105 A. The main frame 105B extends inclinedly rearward to a rear portion of the vehicle 100.
(00032] The vehicle 100 includes an internal combustion engine 115 that is connected to the structural member 105. In the present implementation, the engine-115A is mounted on a swing arm 135, which is swingably connected to the main frame 105B using a toggle link. The vehicle 100 also includes a traction motor 120, which is another prime mover. In a preferred embodiment, the traction motor 120 is hub mounted to a rear wheel 125. A front wheel 110 is rotatably supported by the structural member 105. The front wheel 110-is connected to a handle bar assembly 130 that enables maneuvering of the vehicle 100.
[00033] The vehicle 100 includes a high capacity on-board battery (not shown) drives the traction motor 120. The high capacity battery can be disposed at a front portion or a rear portion of the vehicle 100. The high capacity battery is supported by the structural member 105 and the vehicle 100 includes plurality of body panels, mounted to the structural member and covering various components of the vehicle 100. The plurality of panels includes a front panel 140A, a leg

shield HOB, an under-seat cover 140C, and a left and a right side panel HOD. A glove box may be mounted to a leg shield HOB.
[00034] A floorboard 145 is provided at the step-through portion defined by the main tube 105B. A seat assembly 150 is disposed rearward to the see-through portion and is mounted to the main frame 105B. One. or more suspension(s) connect the wheels 110, 125 to the vehicle 100 and provide comfortable ride. The vehicle 100 comprises of plurality of electrical and electronic components including a headlight 155A, a taillight 155B, a starter motor (not shown), a horn etc. Also, the vehicle 100 includes a master control unit disposed in a housing 200.
[00035] Fig. 2 depicts a perspective view of the housing for the master control unit, in accordance with an embodiment of the present subject matter. The housing 200 includes a chassis 205 and one or more covers 210, 215. The chassis 205 is made of a rigid material including metal. In the present implementation, the chassis 205 is made of Aluminium (At) or an alloy with Aluminium being the major element and is preferably extruded part, which is easier to manufacture compared to casting. The covers 210, 215 are capable of sealing the open portions of the chassis 205 through multiple fasteners 220. The covers 210, 215 are adapted to accommodate cable mounting portions.
[00036] In the depicted embodiment, the chassis 205 includes a base portion 205B and fin portion 205F. The fin portion 205F extends to the sides excluding base portion 205B. In other words, the fin portion 205F extends to three sides of the chassis 205 that includes four sides with the base portion 205B forming the fourth side. The base portion 205B protrudes outward and is provided with mounting apertures 220 for securing the housing 200 to the structural member 105 of the vehicle 100. The housing 200 is capable of securely accommodating the master control unit 225 (shown- in Fig. 3) therein and restrict entry of dust, water, moist or the like.
[00037] Fig. 3 depicts a perspective view of the chassis being mounted with the master control unit, in accordance with the embodiment of Fig. 2. The chassis 205 in the present implementation has a hollow region 205H with opening on

either side. The master control unit 225 is an electronic unit that includes plurality of printed circuit boards (PCB) 230A, 230B that support switching components/electronic components 235 like Metal oxide semiconductor field effect transistors (MOSFETs), Bipolar junction transistors (BJTs), or other semiconductor components. Also, the assembly 230 includes a cooling bar 240 for thermal contact of the electronic component 235 with the chassis 205. The printed circuit boards 230A, 230B are collectively referred to as master control unit assembly 230. The master control unit assembly 230 includes connectors 231, 232 extending outward from the housing 200 to enable connection of electrical wires/ports. The master control unit assembly 230 is slidably mountable to the chassis 205. The chassis 205 is provided with plurality of slots that are symmetrically provided on the internal side and orthogonal to the direction of reception of the master control unit assembly 230.
[00038] Fig. 4 depicts a perspective view of a master control unit assembly, in accordance with an embodiment of the present subject matter. The master control unit assembly 230 includes the physical circuit forming the master control unit 225. The master control unit assembly includes a first board 230A and a second board 230B that are physically connected to each other through a spacer 255A, 255B and are separated by the spacers 255A, 255B by a gap GP thereby forming a space GPS between the boards 230A, 230B. The first board 230A is provided with a second port 232 that is capable of receiving one or more signal cables. Similarly, the second board 230B is provided with one or more first port(s) 231 that is secured thereof and the first port 231 is capable of being connected to the high current carrying cables that are connected to a magneto or a traction motor for carrying high currents that drive the traction motor or that receives power from the traction motor. The master control unit assembly 230 that is slidably mounted to the chassis 205 has the boards with one face towards the inner side of the chassis 205 and the other face that is facing away from the inner side of the chassis 205. As the board, which is typically a printed circuit board (PCB) is a sheet that typically has two faces only. In the present implementation, the second port_232js.a-pinrconnecto1r-and-the^u?stjyort^3^s"a

power stud. In one embodiment, the second port is a signal port and the first port is a power port.
[00039] Further, the second board 230B is provided with plurality of electronic components (shown in Fig. 5) that are soldered thereof. The electronic component 235 includes a body, contact legs - Source, Drain, and Gate, and a heat sink connecting portion. The electronic component 235 is soldered to the second board 230B by passing the legs through pads (not shown) provided on the board 23 OB. The pads provide through-holes for mounting the components like MOSFETs and also provide electrical contact. The various pads are connected to each other in a defined partem through traces provided on the board 230B to establish electrical connection between the components. Further, in one embodiment, the heat sink connecting portion of the electronic component is connected to a cooling bar that connects all the electronic components thermally and subsequently to the chassis for higher heat dissipation. The cooling bar and the electronic components are secured using a bolt or a..metallic clip acting as an elastic member.
[00040] The master control unit assembly 230 includes a processing unit (not shown) that is either integrally fabricated or is soldered as a separate unit. The second port 232 secured to one of the first board 230A and the second board 230B is disposed at the space GPS formed between the first board 230A and the second board 230B. Similarly, the first port 231 is also disposed/accommodated at the space GPS formed between the first board 230A and the second board 230B (as shown in Fig. 4) and is secured to other of the first board 230A and the second board 230B. Further, the circuit assembly 230 includes a sensor interface board 230C, referred to as third board 230C, deposed between the first board 230A and the second board 230B, at the space GPS. Furthermore, the third board 230C is secured by soldering or- the like to one of the boards, wherein in the present implementation the third board 230C is soldered to the second board 230B. The third board 230C includes connecting pins that can be detachably connected to the receiver members provided on the first board 230A. Therefore, in an assembled condition, the third bo^%d_23p.C-(a&rsho1wn-inrFifiT-4)-is-in

electrical contact between the first board 230A and the second board 230B. Further, the data from various sensors provided on the vehicle 100 are communicatively coupled to the third board 230C through the second port 232. Also, the master control unit assembly 230 includes connectors 234 that include male connector(s) and the female connectors(s) that are soldered on the first board 230A and the second board 230B respectively or vice-versa. Therefore, the master control unit assembly 230 cab be split/disassembled into the first board 230A and the second board 230B by removing the fasteners holding the spacers -and then detaching the boards 230A, 230B by detaching the connectors 234. The circuit boards 230A or 230B can be individually serviced, repaired, or replaced. [00041] Fig. 5 depicts a partial exploded view of the second board 230B, in accordance with the embodiment of the present subject matter. The plurality of electronic components is soldered to the board 230B through plurality of legs 235L. The electronic component 235 includes a heat sink connecting portion —23'5'CTh^is^isposedTo~b^ih~mennalTontacrto a cooling~baT240~(shown uTFig: 7) that is disposed adjacent thereto (shown in Fig. 3). For example, as per the depicted layout of electronic components, a first cooling bar is thermally connected to a first set of electronic components 236 disposed towards one side on the board 230B and a second cooling bar is thermally connected to a second set of electronic components 237 disposed towards other side of the board 230B. The cooling bars are preferably a metallic bar that extends along the length of the board and is disposed lockingly with the chassis 205.
[00042] The first port 231 is secured to the second board 230B at one end, wherein the second board 230B is provided with plurality of apertures 233 to secure the first port 231 thereat. Further, the electronic components 235 are -selectively disposed on the board 230B, wherein the first set of electronic components 236 are disposed along a length of the board 230B at a first distance 250 form an edge to accommodate the cooling bar 240. Further, the first set of electronic components 236 are disposed with the heat sink connecting portion 23 5C facing outward. The cooling bar 240 is accommodated at the space GPS andt specifically tat&tne /portion. forniedlrdiie/tG poli!5rlulg^f"trie^firlt~set_of:

electronic components at a first distance 250. Similarly, the second set of • electronic components 237 are disposed at a second distance from an edge to accommodate another cooling bar thereat and to be in contact with the heat sink connecting portion of the second set of electronic components 237. Furthermore, the first set of electronic components 236 and the second set of electronic components 237 are disposed along a length of the second board 230B whereby a longer cooling bar 240 can be accommodated along the length of the master control unit assembly 230. The third board 230C is compactly accommodated between the first set of electronic components 236 and the second set of electronic components 235B.
[00043] Fig. 6 depicts another perspective view of the master control unit assembly, in accordance with the embodiment of Fig. 4. The master control unit assembly 230 includes the first board 230A and the second board 230B having a rectangular shape. In the present implementation, the length of the boards 230A,
^30B-is-greater-man-the-widmrT:he-second-port-2-32-is-disposed-on-one-side-about
the length of the circuit assembly 230 and the first port 231 (shown in Fig. 4) is disposed on the side opposite to the side at which the second port 232 is disposed. Thus, the second port 232 carrying critical and sensitive vehicle, related information are disposed away from the high current carrying first ports 231 thereby avoiding any interference with essential vehicle related information carries therethrough. Further, any interference caused by the high current carrying cables will not affect the information carries by the second ports. The second port 232 in one embodiment, includes plurality of pins 232P, a support portion 232S, and an extension 232A. The support portion 232S is capable of additionally supporting the first board 230A and the second board 232B. The pins 232P that extend from the second port 232 towards the first board 230A and are soldered thereat. Further, the connectors 234A, 234B are distributively disposed to provide the connection feasibility and also structural strength. In the present implementation, a first set of connectors 234A and a second set of connectors 234B are disposed on either sides of the first spacer 255 A.

[00044] The master control unit assembly 230 includes a first spacer 255A disposed substantially in proximity to the center of the master control unit assembly 230. Further, a second spacer 255B and a third spacer 255C are disposed away from the center of the master control unit assembly 230. In the present implementation, the second spacer 255B and the thirds spacer 255C are disposed in proximity to the position of the first port 231. However, in another implementation, the second spacer 255B is disposed on side away from the center and the third spacer 255C is disposed diagonally opposite to the position of the second spacer 255B. In the present implementation as depicted, the spacers 255A, 255B, 255C are placed in a triangular pattern. The spacers 255A, 255B, 255C are fastened to the boards 230A, 230B through a bolt followed by a spring washer,' a nylon washer placed over the board 230A/230B. The spacers 255A, 255B, 255C has internal threading provide at least at the ends to enable fastening through bolts (not-shown).
[00045] Fig. 7 depicts a length wise view of the master control unit assembly mounted to the chassis of the housing 200, in accordance with the embodiment of Fig. 3. The master control unit assembly 230 includes the first board 230A and the second board 230B that are connected through spacers 255 (collectively referred). The chassis 205 includes plurality of grooves 205G that are slots that enable slidable mounting of the board 230A, 230B. The chassis 205 is an extruded part that is formed with holJow portion 205H therein, plurality of fins 260, the grooves 205G for receiving the boards 230A, 230B, and locking portion 205L. The chassis 205 inner sides are provided with locking portions 205L that is scooped portion integrally formed by extrusion. In the present embodiment, the locking portions 205L are a negative dove-tail cross-section extending in the direction of reception of the master control unit assembly 230. Similarly, the cooling bars 240 (shown in Fig. 3 also) that- are connected to the Electronic components are disposed between the first board 230A and the second board 230B and substantially at the extreme ends. An outer side of the cooling bar 240 is provided with a dove-tail cross-section that complements the locking portion 20'5L fpno^id^orFffiiPlGH

unit assembly 230 the cooling bars 240 get engaged with the locking portions 205L of the chassis 205. This brings the Electronic components thermally in contact with the chassis 205 that is provided with plurality of fins 260. Thus, fins 260 are provided on one or more sides of the chassis 205 whereby the Electronic components are effectively cooled.
(00046] Many modifications and variations of the present subject matter are possible in the light of claims herein. It is to be understood that the aspects of the embodiments are not necessarily limited to the features described herein.

List of reference signs:
100 vehicle 230A first board
105 structural member 23 OB second board
105A head tube 230C third board
105B mainframe 35 231 first port
115 internal combustion 232 second port
engine 232A extension
135 swing arm 232 support portion
120 traction motor 232P pins
125 rear wheel 40 233 -apertures
130 handle bar assembly 234\234A135 swing arm 234B connectors
140A front panel 235 electronic component
HOB leg shield 235B body
140C under-seat cover 45 235C heat sink connecting
HOD side panel portion
145 floorboard 235L legs
155A headlight 236 first set of electronic
155B taillight components
200 housing 50 237 second set of electronic
205 chassis components
205B base portion 240 cooling bar
205F fin portion 240G groove
205H hollow region . 250 first distance
205G groove 55 250A first end
205L locking portion 250B second end
210/215 cover 255\255A
220 fastener 255B\255C spacers
225 master control unit 260 plurality of fins
230 master control unit 60 GP gap

We claim:
1. A master control unit assembly (230) capable of being disposed in a housing
(200) for mounting to a motor vehicle (100), said master control unit assembly
(230) comprising:
plurality of boards (230A, 230B, 230C) capable of supporting one or more electronic components (235) thereon, said plurality of boards (230A, 230B, 230C) include a first board (230A) and a second board (230B), said first board (230A) and said second board (230B) being disposed adjacent to each other defining a gap (GP) therebetween, and said one or more electronic component(s) (235) includes at least one electronic component (235) being mounted to at least one of said first board (230A) and said second board (230B), and said at least one electronic component (235) is disposed at a space (GPS) defined by said gap (GP).
2. The master control unit assembly (230) as claimed in claim 1, wherein said first board (230A) and said second board (230B) arc disposed substantially parallel to each other and being connected to each other using one or more spacers (255A, 255B, 255B) disposed therebetween.
3. The master control unit assembly (230) as claimed in claim 1, wherein said master control unit assembly (230) includes one or more ports (231, 232) and said one or more ports (231, 232) include at least one first port (232) and at least one second port (231), said first port (232) connected to one of said first board (230A) and said second board (230B), and said second port (231) connected to other of said first board (230A) and said second board (230B), and said first port (232) and said second port (231) are disposed at said space (GPS) defined by said gap (GP).
4. The master control unit assembly (230) as claimed in claim 3, wherein said at least one first port (232) is disposed on one side of the master control unit assembly (230) and said second port (231) is disposed one another side of said master control unit assembly (230), and said ports (231, 232) includes at least one of a signal port, a power port or the like.

5. The master control unit assembly (230) as claimed in claim 1, wherein said first board (230A) and said second board (230B) are having a planar profile with substantially two planar faces and said space (GPS) is formed between a planar face of first board (230A) and a planar face of the second board (230B).
6. The master control unit assembly (230) as claimed in claim 2, wherein said spacers (255A, 255B, 255B) includes a first spacer (255A) disposed substantially in proximity to a center portion of said master control unit assembly (230) and said spacers include a second spacer (255B) and a third spacer (255C), said second' spacer (255B) and said third spacer (255C) are disposed away from said center.
7. The master control unit assembly (230) as claimed in claim 6, wherein said second spacer (255B), and said third spacer (255B) are disposed on opposite ends at different sides of the master control unit assembly (230) whereby the second spacer (225B), the first spacer (225A), and the third spacer (225C) are forming a diagonal orientation.
8. The master control unit assembly (230) as claimed in claim 6, wherein said first spacer (255A), said second spacer (255B), and said third spacer (255B) are disposed on opposite ends of same side of the master control unit assembly whereby the second spacer (225B), the first spacer (225A), and the third spacer (225C) are forming a triangular orientation.
9. The master control unit assembly (230) as claimed in claim 1, wherein said first board (230A) and said second board (230B) are electrically connected to each other using one or more detachable type connectors (234), and said detachable type connectors are disposed substantially at said space (GPS).
10. The master control unit assembly (230) as claimed in claim 1, wherein said plurality of boards (230A, 230B, 230C) includes a third board (230C) disposed between the first board (230A) and the second board (230B) at said space (GPS), said third board (230C) acting as sensor information receiving board (230C) is secured to one of said first board (230A) or said second (230B), and is electrically coupled to other of said first board (230A) and said second (230B) in detaGhaye-mannef

11. The master control unit assembly (230) as claimed in claim 1, wherein said electronic components (235) being mounted to one of said first board (230A) and said second board (230B) is disposed at said space (GPS) therebetween, said electronic components (235) are selectively connected to one or more cooling bar (240) in thermal connection, said cooling bars (240) disposed at said space (GPS) and are positioned substantially at end portion(s) of said.master control unit assembly (230) to enable thermal contact with a chassis (205) enclosing at least a portion of said master control unit assembly (230).
12. The master control unit assembly (230) as claimed in 10, wherein said master control unit assembly (230) is slidably mountable to a chassis (205) of said housing (200) through at least one of said one or more board(s) (230A, 230B) and through at least one cooling bar (240) of said one or more cooling bar(s) (240).
13. The master control unit assembly (230) as claimed in 1, wherein said one or more electronic components includes a first set of electronic components (236) disposed along a length of a board (230B) of said plurality of boards (230A, 230B, 230C) and said first set of electronic components (236) are positioned at a first distance (250) form an edge of said board (230B) to accommodate said cooling bar (240), and said first set of electronic components (236) being disposed with a heat sink connecting portion (235C) facing outward to be in thermal contact with a cooling bar (240).