Claims:WE CLAIM:
1. A pneumatic operated door system for vehicle comprising:
a master module with wireless controller [1]; and
one or more slave modules with respective wireless controllers [2],
wherein the master module with wireless controller [1] is positioned at pre-defined location in dashboard [3] of the vehicle,
wherein the slave modules with respective wireless controllers [2] are positioned in pre-defined location at respective one or more pneumatic operated door control panels [4] of the vehicle,
wherein the master module [1] further includes one or more switches, indicators, buzzer, positioned in a pre-defined location,
wherein the slave modules with respective wireless controllers [2] are connected with one or more input and output elements to perform the operation of door opening / closing, and
wherein output from the master module with wireless controller [1] is fed to the slave modules [2] wirelessly through the switches vide respective wireless controllers [2], thereby wirelessly transfers and receives control signal from the master controller [1] to the pneumatic operated door control panels [4] of the vehicle.

2. The pneumatic operated door system as claimed in claim 1, wherein the input and output elements include but not limited to solenoid valves for door opening / closing, cylinder end position sensor, safety sensor.

3. The pneumatic operated door system as claimed in claim 2, wherein the door open / close operation is initiated through the switches positioned on the dash board [3] by driver of the vehicle.

4. The pneumatic operated door system as claimed in claim 1 optionally includes at least one wireless remote controller to control the door operation through the slave module [2], wirelessly when required.

5. The pneumatic operated door system as claimed in claim 1, wherein the slave modules with wireless controllers [2] outputs signal to the buzzer and indicator to indicate warning signal to the driver if the door is not closed after pre-defined time.
, Description:FIELD OF INVENTION
The present invention relates to a pneumatically operated door system. More particularly, the present invention relates to a pneumatically operated door system for vehicle with wireless controller, which enables to wirelessly transfer and receive control signals from dashboard of a vehicle to one or more doors without any physical wire / harness cable.

BACKGROUND OF INVENTION
Generally, pneumatic door mechanism actuates the open / close movements of a vehicle door through two double acting cylinders and two linkages with spline shafts. Controls are usually Electro - pneumatically actuated, i. e. the driver triggers an electrical push button connected with the door controller for the purpose of opening or closing the door, which in turn provides electrical signal to the solenoid valves and actuates the double acting cylinder. The electrical push button is connected to the door controller through physical wire / harness cable from dash board of the vehicle to the door controls near the doors.

Some of the disadvantages faced by vehicle manufacturer / door system manufacturer, due to the routing of wires from the dash board to the door controls near the doors in existing electro pneumatically operated door system are
• Wires have to be routed before Acrylonitrile Butadiene Styrene (ABS) panel work is done.
• Wires get damaged while fastening the ABS panels / other interior accessories on to the vehicle body.
• Difficulty in finding the exact location of damaged cable.
• Non accessibility for servicing the main harness cable.
• More time for replacement.
• Future expansion is not possible.
• High cable cost due to usage of flame retardant cable.
• Space occupied at Inventory.

Some of the prior arts are:
CN203570095 discloses a Bus Rapid Transit (BRT) safety door capable of supporting a wireless remote control function that includes a remote controller and a receiver, the remote control set in train compartments inside the receiver installed in train compartments; and the remote control including indicators, a microcontroller, RF transmitter module and a transmitting antenna.

US8217755 discloses a system for controlling entry and exit from a vehicle, comprising a first user interface for setting an exit mode from said vehicle; a second user interface for indicating said vehicle has stopped; a third user interface for indicating an operator has left said vehicle; a drive for opening and closing an exit door of said vehicle; a controller input by said first user interface, said second user interface, and said third user interface and outputting to said drive for: on receipt of an indication from said first user interface of an exit mode and an indication from said second user interface that said vehicle has stopped, controlling said drive to open said exit door.

US20140069013 discloses a door closer system that includes a base housing configured to couple to a mounting point. A top housing movably couples to the base housing, where the top housing is configured to travel in a linear motion between a extended position and a compressed position relative to the base housing. A linear actuator couples to the base housing and the top housing. A controller couples to the base housing and the linear actuator. A wireless receiver couples to the base housing and the controller. A remote controller includes a user interface and a wireless transmitter.

Accordingly, there exists a need for a cost effective pneumatically operated door system for vehicle, which enables to wirelessly transfer and receive control signals from the dashboard to the doors without any physical wire / harness cable.

OBJECTS OF INVENTION
One or more of the problems of the conventional prior art may be overcome by various embodiments of system and method of the present invention.

It is the primary object of the present invention to provide a cost effective pneumatically operated door system for vehicle.

It is another object of the present invention to provide a pneumatically operated door system for vehicle with wireless controller, which enables to wirelessly transfer and receive control signals from the dashboard to the doors without any physical wire / harness cable.

SUMMARY OF INVENTION
Thus according to the basic aspect of the present invention there is provided a pneumatic operated door system for vehicle comprising:
a master module with wireless controller; and
one or more slave modules with respective wireless controllers,
wherein the master module with wireless controller is positioned at pre-defined location in dashboard of the vehicle,
wherein the slave modules with respective wireless controllers are positioned in pre-defined location at respective one or more pneumatic operated door control panels of the vehicle,
wherein the master controller further includes one or more switches, indicators, buzzer, positioned in a pre-defined location,
wherein the slave modules with respective wireless controllers are connected with one or more input and output elements to perform the operation of door opening / closing, and
wherein output from the master module with wireless controller is fed to the slave modules wirelessly through the switches vide respective wireless controllers, thereby wirelessly transfers and receives control signal from the master controller to the pneumatic operated door control panels of the vehicle.

It is another aspect of the present invention, wherein the input and output elements include but not limited to solenoid valves for door opening / closing, cylinder end position sensor, safety sensor.

It is another aspect of the present invention, wherein the door open / close operation is initiated through the switches positioned on the dash board by driver of the vehicle.

It is another aspect of the present invention, wherein the system optionally includes at least one wireless remote controller to control the door operation through the slave module, wirelessly when required.

It is another aspect of the present invention, wherein the slave modules with respective wireless controllers output signal to the buzzer and indicator to indicate warning signal to the driver if the door is not closed after pre-defined time.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Figure 1: illustrates pneumatically operated door system for vehicle with two doors according to one embodiment of the present invention.
Figure 2: illustrates pneumatically operated door system for vehicle with four doors according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION WITH REFERENCE TO THE ACCOMPANYING DRAWINGS
The present invention is thus directed to a pneumatically operated door system for vehicle with wireless controller, which enables to wirelessly transfer and receive the control signals from the dashboard control to the one or more doors without any physical wire / harness cable.

Referring to Figures 1 and 2, the pneumatic operated door system for vehicle comprises of a master module with wireless controller [1]; and one or more slave modules with respective wireless controllers [2], said master module with wireless controller [1] is positioned at pre-defined location in dashboard [3] of the vehicle. The slave modules with respective wireless controllers [2] are positioned in pre-defined location at respective one or more pneumatic operated door control panels [4] of the vehicle. The slave modules with respective wireless controllers [2] are connected with one or more input and output elements to perform the operation of door opening / closing, said input and output elements include but not limited to solenoid valves for door opening / closing, indicators, buzzer, cylinder end position sensor, safety sensor. Output from the master module [1] is fed to the slave modules [2] wirelessly through the switches vide respective wireless controller [2], thereby wirelessly transfers and receives control signal from the master module [1] to the slave modules [2] positioned in the pneumatic operated door control panels [4] of the vehicle to control operation of the door.

The door open / close operation is initiated through the switches positioned on the dash board [3] by driver of the vehicle. The pneumatic operated door system optionally includes at least wireless remote controller to control the door operation through the slave module [2], so that the door operation can also be controlled by conductor of the vehicle wirelessly when and as required. The slave modules with wireless controllers [2] outputs signal to the buzzer and indicator to indicate warning signal to the driver if the door is not closed after pre-defined time. The pneumatic operated door system uses a wireless protocol that includes but not limited to Radio-Frequency Identification (RFID), Bluetooth, Near Field Communication (NFC), and Zigbee to wirelessly transfer and receive the control signals from the master module with wireless controller [1] to the slave modules with respective wireless controllers [2].

For illustration, in one embodiment as shown in Figure 1, the pneumatic operated door system for vehicle comprises of a master module with wireless controller [1]; and two slave modules with respective wireless controllers [2] fixed to respective pneumatic door control panels [4] of the vehicle. In yet another embodiment as shown in Figure 2, the pneumatic operated door system for vehicle comprises of a master module with wireless controller [1]; and four slave modules with respective wireless controllers [2] fixed to respective pneumatic door control panels [4] of the vehicle.