Description:FIELD OF THE INVENTION

[0001] The present invention relates to a beverage serving device for railways that enables autonomous, safe, and customized beverage preparation and delivery into train coaches, all in a self-sufficient manner to enhance passenger convenience and operational efficiency at transit stations.

BACKGROUND OF THE INVENTION

[0002] The growing demand for passenger convenience and automation in public transportation systems, particularly within railways, has led to the emergence of various onboard service innovations. However, the delivery of beverages to passengers in railway coaches remains largely manual, involving staff who must navigate moving trains or wait until the train is stationary and they are labor-intensive, time-consuming, and prone to inefficiencies, including spillage, service delays.

[0003] Existing vending or service trolleys are not equipped to deliver beverages autonomously into train coaches from a platform, nor are they designed to operate in synchronization with train schedules or platform alignment. Moreover, they do not provide personalized or localized beverage options. Current dispensing machines are static in location and fail to integrate with real-time data sources such as train movements, platform positions, or user geolocation. Thus, there exists a long-standing need for a smart, mobile, and autonomous beverage serving means specifically configured for railway environments.

[0004] US10178925B2 discloses about a beverage preparation system comprises: a first machine for preparing a first beverage, the first machine having a first outlet for dispensing a beverage, such as coffee, onto a beverage dispensing area for positioning a cup or mug; and—a second machine for preparing and dispensing a second beverage via a second beverage outlet, the second machine being disconnectably connected to the first machine and separable therefrom. The first and second machines, when connected, are configurable so that the second outlet is positioned or positionable adjacent to the first outlet to dispense the second beverage onto the beverage dispensing area and into a cup or mug in position for collecting the first beverage from the first beverage outlet.

[0005] Conventionally, many devices have been developed that are capable of dispensing beverages to passengers in railway environments through either manual delivery or fixed vending units positioned on platforms. However, these existing devices are incapable of autonomously navigating railway platforms, aligning with train coach entrances, or transferring beverages directly into moving or stationed coaches without human intervention.

[0006] In order to overcome the aforementioned drawbacks, there exists a need in the art to develop a device that required to be capable of delivering beverages directly into the coach by autonomously navigating railway platforms. In addition, the developed device also needs to perform real-time passenger detection, ticket verification, and beverage customization based on regional preferences, and quality assurance.

OBJECTS OF THE INVENTION

[0007] The principal object of the present invention is to overcome the disadvantages of the prior art.

[0008] An object of the present invention is to develop a device that is capable of navigating railway platforms and aligning precisely with train coaches for delivering beverages directly into the passenger area.

[0009] Another object of the present invention is to develop a device that is capable of providing a means that allows passengers to browse regional beverage menus, place remote orders, track delivery status, and verify identity through secure code scanning.

[0010] Another object of the present invention is to develop a device that is capable of preparing on-demand beverage, and perform strength analysis to deliver a personalized and high-quality beverage.

[0011] Yet another object of the present invention is to develop a device that is capable of performing comprehensive quality analysis of beverages prior to delivery for determining chemical content, spoilage status, and temperature, and dynamically adjusting preparation conditions accordingly.

[0012] The foregoing and other objects, features, and advantages of the present invention will become readily apparent upon further review of the following detailed description of the preferred embodiment as illustrated in the accompanying drawings.

SUMMARY OF THE INVENTION

[0013] The present invention relates to a beverage serving device for railways that is capable of autonomously navigating railway platforms, aligning precisely with train coach openings, and safely extending beverage-carrying components into the coaches. Additionally, the device is also capable of preparing beverages based on the user provided specifications in an automated manner.

[0014] According to an embodiment of the present invention, a beverage serving device for railways, comprises a mobile platform configured for autonomous movement along a transit station platform and selective alignment with a train coach opening. A vertically extendable mechanism is mounted on the platform, terminating in a housing operable to transfer a beverage carrying assembly through the coach access opening. The beverage carrying assembly includes an extendable plate with a cascading section, at least one translating mechanism on each side for horizontal insertion into the coach, and multiple beverages holding units integrated within the cascading section to securely transport cups. A beverage dispensing unit delivers selected beverages based on user input and comprises multiple storage chambers for different beverages, each connected to a controlled outlet nozzle via a rotating mechanism for targeted dispensing, with a circular sliding unit rotating the chambers as required and a sensing module detects passenger presence, alignment accuracy, and safe handover conditions.

[0015] According to another embodiment of the present invention, the device further comprises of a user interface enables passengers to browse GPS-based region-specific menus, place remote orders, track the device, and scan QR codes to verify ticket identity and authorize dispensing. The carrying assembly further features a two-axis slider supporting multiple cup storage sections and a clamp-actuator mechanism to retrieve and align cups based on beverage and cup characteristics. The device also includes omnidirectional wheels with individual motors for precise maneuvering and collision avoidance. The dispensing unit is equipped with a substance preparation arrangement for mixing, roasting, grinding, or strength analysis, and a quality control module featuring a digital lactometer, electronic nose, NIR spectroscopic sensor, red/green LED freshness indicators, image acquisition, and tactile sensors for cup temperature adjustment. Train motion is monitored using a vibration sensor and a microphone detecting horn and noise patterns to infer arrival/departure, while machine learning algorithms analyze schedule data to optimize delivery timing. A payment module supports QR code-based digital payments and includes a currency deposit chamber with an iris lid and scanner for validating manual payments, along with a motorized clamp for returning excess currency and a brewing module prepares beverages using a collapsible rod with a colorimetric sensor for strength detection, storage units for coffee, tea, and additives, valves and collapsible pipes for precise dispensing, and a preparation unit with adjustable grind size and temperature control.

[0016] While the invention has been described and shown with particular reference to the preferred embodiment, it will be apparent that variations might be possible that would fall within the scope of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] These and other features, aspects, and advantages of the present invention will become better understood with regard to the following description, appended claims, and accompanying drawings where:
Figure 1 illustrates an isometric view of a beverage serving device for railways; and
Figure 2 illustrates an inner view of a housing associated with device.

DETAILED DESCRIPTION OF THE INVENTION

[0018] The following description includes the preferred best mode of one embodiment of the present invention. It will be clear from this description of the invention that the invention is not limited to these illustrated embodiments but that the invention also includes a variety of modifications and embodiments thereto. Therefore, the present description should be seen as illustrative and not limiting. While the invention is susceptible to various modifications and alternative constructions, it should be understood, that there is no intention to limit the invention to the specific form disclosed, but, on the contrary, the invention is to cover all modifications, alternative constructions, and equivalents falling within the spirit and scope of the invention as defined in the claims.

[0019] In any embodiment described herein, the open-ended terms "comprising," "comprises,” and the like (which are synonymous with "including," "having” and "characterized by") may be replaced by the respective partially closed phrases "consisting essentially of," consists essentially of," and the like or the respective closed phrases "consisting of," "consists of, the like.

[0020] As used herein, the singular forms “a,” “an,” and “the” designate both the singular and the plural, unless expressly stated to designate the singular only.

[0021] The present invention relates to a beverage serving device for railways that is capable of autonomously dispensing beverages into train coaches with minimal human intervention. Additionally, the device is also capable of detecting train movement, aligning accurately with the coach entrance, verifying passenger identity and conducting real-time quality checks on beverage freshness.

[0022] Referring to Figure 1 and 2, an isometric view of a beverage serving device for railways and an inner view of a housing associated with device are illustrated, respectively, comprising a mobile platform 101 having multiple omnidirectional wheels 102, a vertically extendable means 103 mounted on the upper portion of the platform 101, the terminating end of the extendable means 103 is equipped with a housing 104, a beverage carrying assembly 105 arranged in front of the housing 104, the beverage carrying assembly 105 comprises of an extendable plate 106 with cascading sections 107, at least one translating means 108 on either side of the plate 106, multiple beverage holding units 109 integrated within the cascading sections 107, a two-axis slider 110 mounted on the housing 104 for supporting multiple cup storage sections 111, a clamp 112 and actuator 113 means installed with the cup storage sections 111.

[0023] Figure 1 and 2 further illustrates a beverage dispensing unit 114 arranged above the housing 104 and having multiple storage chambers 115, a controlled outlet nozzle 116 connected to each chamber, a circular sliding unit 117 installed in between the chambers 115 and the housing 104, a substance preparation means 201 installed within the housing 104 and comprising a plurality of storage units 202 connected to valves 203 and collapsible pipes 204, a preparation unit 205 associated with the substance preparation means 201, a storage tray 206 arranged within the housing 104, a vessel 207 installed below the tray 206, a bean grinding unit 208 positioned adjacent to the vessel 207, an electronically controlled valve (ECV) 209 mounted at the lower discharge point of the grinding unit 208, a micro-pump 210 connected to the outlet of the preparation unit 205 and a conduit 211 connected between the pump 210 and the storage chambers 115.

[0024] The device disclosed herein comprises of a mobile platform 101 developed to be positioned over a transit station platform 101 by means of multiple omnidirectional wheels 102 installed beneath the platform 101. Each omnidirectional wheel is independently coupled with an individual motor, for facilitating precise control over movement, including forward, backward, lateral, and rotational motions.

[0025] A vertically extendable means 103 is mounted on the upper portion of the platform 101. The extendable means 103 comprises a telescopic or scissor-lift arrangement, which enables precise vertical displacement and positioning of the terminating end of the extendable means 103 relative to the platform 101 base. The terminating end of the extendable means 103 is affixed with a housing 104 that serves as the mounting frame for accommodating various beverage carrying and dispensing components associated with the device.

[0026] The device incorporates a user interface configured to be installed within a computing unit accessed by a user/ passenger. The computing is wirelessly connected to an inbuilt microcontroller associated with the device, by means of a communication module which includes, but is not limited to a Wi-Fi (Wireless Fidelity) module, Bluetooth module, or a GSM (Global System for Mobile Communication) module. The communication module allows the user to send and receive data to and from the microcontroller without the need for physical connections.

[0027] The user interface presents a structured menu that allows the user to browse through available beverage options. These options are dynamically customized to recommend region-specific or culturally preferred beverages, based on the device's current geolocation, as determined by a Global Positioning System (GPS) module integrated with the microcontroller.

[0028] The GPS (Global Positioning System) module works by using a network of satellites orbiting earth to determine the precise geographic location of the device. The GPS module consists of a GPS receiver that communicates with at least four satellites. Each satellite continuously transmits signals containing its location and the current time. The receiver calculates the time taken for these signals to reach the receiver for determining the distance to each satellite. Using a process called trilateration, the receiver uses these distances to pinpoint the exact location (latitude, longitude, and altitude) of the device.

[0029] Based on the real-time geolocation data acquired by the integrated GPS module, the microcontroller interprets the precise position of the device within the railway network or station premises. Utilizing this geolocation input, the microcontroller accesses a linked beverage database and retrieve a curated list of beverages that are relevant or popular in the detected geographic region.

[0030] Upon successful retrieval, the list of region-specific beverages is transmitted wirelessly to the computing unit via the communication module. Once received, the user interface interprets the structured data, processes the beverage attributes (such as name, ingredients, price, and customization options), and graphically renders an interactive menu on the display screen of the computing unit. The user then browses through the beverage catalog, compare options, and remotely place orders by selecting a beverage type, specifying quantity, customizing preferences such as strength, temperature, or additives, and confirming the order through an intuitive interaction sequence.

[0031] The user interface integrates a built-in QR (Quick Response) code scanner functionality. To confirm and proceed with a beverage order, the user is required to scan the QR code printed or embedded within their train ticket, which uniquely identifies the passenger and verifies their eligibility to access services on the specific coach and journey. Upon scanning the ticket, the microcontroller communicates with the central verification module or a linked passenger information system to validate the ticket's authenticity. This validation process includes checks such as ticket number, travel date, coach and seat information, and user identity, ensuring that only authorized passengers are permitted to place orders for onboard delivery, while also fetch accurate delivery coordination by associating the beverage order with the specific coach and seat number encoded in the ticket.

[0032] The user is able to track the real-time location of the beverage delivery device through the user interface. The GPS module continuously retrieves location coordinates of the device and transmits them to the microcontroller. This data is then wirelessly transmitted to the user interface on the passenger's computing unit through communication modules. The user interface processes this location data and overlays it on a graphical map or animated route interface, for allowing the user to visually monitor the current delivery status.

[0033] A substance preparation means 201 is installed within the housing 104, and comprises of multiple storage units 202 for storing coffee powder, tea bags, milk, water, and additives. Each of the storage unit is arranged with a valve 203 and collapsible pipes 204, wherein upon receiving a valid request, the microcontroller evaluates the ingredients required for the preparation of the user selected beverage, and accordingly actuates specific valves 203 corresponding to the storage unit having evaluated ingredients, to open for dispensing precise quantities of each ingredient into a preparation unit 205 arranged below the storage units 202.

[0034] The valves 203 are connected to the collapsible pipes 204, which guides the dispensed ingredients into the preparation unit 205. The valve consists of a gate, nozzle and a magnetic coil which is energized by the processing module, on energizing of the magnetic coil, a magnetic force is generated which pushes the gate to open for dispensing a pre-set amount of ingredients into the preparation unit 205. After the required amount of ingredients are dispensed, the microcontroller sends a command to de-energize the magnetic coil in order to close the valves 203.

[0035] The substance preparation means 201 further comprises of a storage tray 206 containing whole coffee beans and arranged adjacent to the preparation unit 205 within the housing 104. In case the user selects a coffee variant that necessitates the use of whole beans, such as espresso or freshly brewed black coffee, the microcontroller processes this specific input and activates the bean preparation cycle.

[0036] Upon initiation, a controlled quantity of coffee beans is released from the storage tray 206 through a gravity-fed dispensing gate, into a vessel 207 lined with a resistive heating element, preferably composed of nichrome (nickel-chromium alloy) wire. The nichrome wire is coiled or arranged in a serpentine layout along the vessel’s 207 inner surface to enable uniform heat distribution. When electrical current passes through the nichrome element, it generates heat through resistive heating, and the temperature is precisely modulated via a feedback-enabled thermal control circuit comprising a thermocouple or RTD (Resistance Temperature Detector) sensor. This circuit maintains the roasting temperature within the optimal range (typically 180°C to 240°C), depending on the desired roast level—light, medium, or dark—based on predefined parameters in the microcontroller or user-specific inputs.

[0037] Simultaneously, the microcontroller actuates a toggle unit mounted at the bottom of the vessel 207 to shake the vessel 207 during the roasting process to ensure even heating. The toggle mechanism comprises a miniature cam-based actuator or a servo-driven oscillating arm that induces a shaking or rocking movement in the vessel 207 at controlled intervals. The primary objective of this motion is to continuously redistribute the coffee beans within the vessel 207 during roasting to ensure uniform heat exposure, prevent localized overheating, and avoid scorching.

[0038] Additionally, the shaking action helps in loosening the chaff (the thin skin that separates from the bean during roasting). Upon completion of the roasting cycle, the microcontroller actuates an air blower positioned adjacent to the vessel 207, to direct a controlled, high-velocity stream of air across the vessel 207 containing the freshly roasted coffee beans.

[0039] As the air blower scatters the lightweight chaff from the surface of the roasted coffee beans, a motorized suction unit is simultaneously actuated by the microcontroller to generate a negative pressure zone for capturing the chaff. The motorized suction unit comprises a high-speed fan motor enclosed within an aerodynamic enclosure, connected to a flexible suction conduit or nozzle positioned directly above or adjacent to the air blower. This nozzle is designed to capture airborne chaff without disrupting the position of the heavier roasted beans. The chaff is drawn through the conduit and directed into a dedicated chaff collection chamber connected to the suction unit.

[0040] The vessel 207 is mounted within the housing 104 using a pneumatic rod, with motorized hinges connecting the vessel 207 to the rod. After roasting of beans and chaff collection, the microcontroller actuates the rod to extend and adjust the vessel 207 height and the motorized hinges to gently tilt the vessel 207 at a predefined angle, in order to transfer of roasted beans from the vessel 207 into a bean grinding unit 208 positioned adjacent to the vessel 207.

[0041] The hinges comprise of a pair of leafs that are screwed with the surface of the vessel 207 and the rod. The leafs are connected with each other by means of a cylindrical member integrated with a shaft coupled with a DC (Direct Current) motor to provide required movement to the hinges. The rotation of the shaft in clockwise and anti-clockwise direction provides required tilting movement to the hinges, that in turn tilt and orient the vessel 207 at the pre-defined angle to transfer the roasted beans from the vessel 207 into the bean grinding unit 208.

[0042] Once the roasted beans are dispensed into the grinding unit 208, the microcontroller actuates a motorized stirrer installed in the grinding unit 208 to grind the beans into different particle sizes in accordance with the selected coffee preparation method as specified by the user/passenger.

• For the French press coffee, the beans grind into coarse particles.
• For drip coffee, the beans will grind into medium particles.
• For other coffee types such as espresso, a fine grind is used.

[0043] The motorized stirrer used herein is equipped with helical or serrated blades, and is coupled to a rotary motor capable of operating at variable speeds as determined by the user’s beverage preference. Upon actuation, the stirrer begins to rotate at a controlled speed, generating a tangential shearing force that draws the beans inward toward the grinding blades for grinding the beans into particles suitable for the user preferred beverage type.

[0044] Upon completion of the grinding, the microcontroller actuates an electronically controlled valve (ECV) 209 mounted at the lower discharge point of the grinding unit 208, to get opened for allowing the precise amount of ground coffee to flow into the preparation unit 205 located directly beneath or adjacent to the grinding unit 208.

[0045] Once the ground coffee or the ingredients for the user selected beverages are dispensed into the preparation unit 205, the microcontroller initiates the preparation of the beverage type, as defined by the passenger’s order parameters. The process begins with the activation of a heating unit integrated with the preparation unit 205, to rapidly heats the water or milk to an optimal brewing temperature, typically between 90°C to 96°C. The heating unit used herein works in the similar manner as described above for the resistive heating element.

[0046] Once the water/milk is heated, the microcontroller actuates a stirring module integrated at the base of the preparation unit 205 and comprising a small motor-driven paddle or magnetic agitator, to rotate and mix the dispensed additives with the heated water/milk, in order to prepare the beverage. The stirring module used herein works in the similar manner as described above for the motorized stirrer.

[0047] The substance preparation means 201 further comprises of a collapsible rod with a colorimetric sensor, wherein upon preparation of the beverage the microcontroller actuates a pneumatic unit linked to the collapsible rod to extend the rod in order to insert the colorimetric sensor into the preparation unit 205 containing the prepared beverage. The pneumatic unit includes an air compressor, air cylinder, air valves and piston which works in collaboration to aid in extension and retraction of the rod. The piston is attached to the rod, wherein the extension/ retraction of the piston results in extension/ retraction of the rod for dipping the colorimetric sensor into the prepared beverage.

[0048] Simultaneously, the colorimetric sensor analyzes the color profile and optical density of the beverage. The sensor operates on the principle of absorbance and reflectance spectroscopy, measuring specific wavelengths of light to determine whether the beverage matches the expected visual characteristics associated with its type (e.g., espresso, latte, black tea, etc.). The microcontroller compares the captured colorimetric data against predefined reference values stored in the linked database for each beverage variant. If the detected parameters fall within the acceptable tolerance range, the beverage is deemed properly prepared.

[0049] A beverage dispensing unit 114 is installed over the housing 104. The dispensing unit 114 comprises of multiple storage chambers 115 for storing different beverages. Each of the chambers 115 is connected to a controlled outlet nozzle 116 by means of rotating means such as a ball and socket joint. Once the beverage is prepared, as conformed by the colorimetric sensor, the microcontroller actuates a micro-pump 210 connected to the outlet of the preparation unit 205, to transfer the prepared beverage from the preparation unit 205 into the chambers 115 of the dispensing unit 114, via multiple conduits 211.

[0050] A vibration sensor module is mounted on the mobile platform 101 and is configured to detect subtle and pronounced vibrations caused by the arrival, stationary period, or departure of a train coach. The vibration sensor module detects mechanical oscillations or motion, to monitor platform or coach movement. The module includes a piezoelectric element or MEMS accelerometer, and a signal conditioning circuit. The piezoelectric or MEMS sensor converts mechanical vibrations into electrical signals when movement is detected. The signal conditioning circuit amplifies and filters these raw signals and continuously transmits vibration data to the microcontroller.

[0051] The microcontroller processes the data by applying predefined threshold protocols to determine whether the train is stationary, approaching, or departing. Synchronously, a microphone installed over the mobile platform 101 captures and analyze sound waveforms specific to railway operations. The microphone is calibrated to detect signature noise patterns such as the train horn, braking screeches, or platform announcements. Once these audio patterns are recognized, the signals are processed by a sound recognition module embedded in the microcontroller, which infers real-time events like the train's imminent arrival or departure.

[0052] The microcontroller is integrated with machine learning protocols that are trained using datasets consisting of train arrival/departure times, station stop durations, delay patterns, and peak traffic intervals. The microcontroller analyzes this data, to optimize the timing for beverage preparation and delivery. Once the estimated time of arrival (ETA) of the train is determined with high confidence, the microcontroller accordingly initiate the beverage preparation process a few minutes before the expected arrival.

[0053] The microcontroller continuously processes the data from the vibration sensor module and the microphone to determine the arrival of the train over the platform. Upon confirmation of arrival, as validated through a three-fold verification process comprising: (a) analysis of real-time vibration patterns detected by the vibration sensor module, (b) detection of characteristic acoustic signals via the microphone such as horn patterns and braking noise, and (c) synchronization with train schedule data through machine learning protocols, the microcontroller confirms the presence of a train at the platform.

[0054] Once the presence is confirmed, the microcontroller activates an image acquisition unit installed over the housing 104. The image acquisition unit comprise a high-resolution artificial intelligence (AI)-enabled camera, that is activated to perform real-time visual monitoring of the platform environment. The primary objective of the camera is to determine the precise alignment of the train coach relative to the mobile platform 101.

[0055] The camera captures visual data and processes it through embedded AI protocols, such as object detection and optical character recognition (OCR), to read and recognize coach identification markings, alignment cues, and surrounding spatial references. Simultaneously, the microcontroller fetches the coach number and seat position of the target passenger from the scanned train ticket data earlier through the user interface.

[0056] Using this data, the microcontroller locates the correct coach position and accordingly actuates the motors of the omnidirectional wheels 102 to maneuver the platform 101 and position the device near the passenger’s/ user’s coach. The wheels 102 are guided by the microcontroller, based on the real-time data received from the camera to avoid collision during movement along the train platform.

[0057] A beverage carrying assembly 105 is installed at one of the lateral sides of the housing 104. The beverage carrying assembly 105 comprises of an extendable plate 106 that includes a cascading section formed by a series of stepped or inclined segments, each integrated with a dedicated beverage holding unit 109. The assembly further comprises of a two-axis slider 110 mounted on the housing 104 for supporting multiple cup storage sections 111. Each of these storage sections 111 is configured to hold cups of different sizes, shapes, or materials based on the beverage requirements, for example, insulated cups for hot drinks, larger cups for cold beverages, or eco-friendly cups for sustainability purposes.

[0058] The two-axis slider 110 is integrated with a clamp 112 and actuator 113 means, which is responsible for selecting and retrieving the most suitable cup from the storage section. Upon receiving the user's order, the microcontroller evaluates the cup requirements (such as capacity, insulation, and type) from the beverage profile stored in the internal database. The microcontroller then sends actuation signals to the two-axis slider 110 to align the clamp 112 with the corresponding storage section.

[0059] The two-axis slider 110 consists of two lead screws aligned along X and Y axes to translate the clamp 112 in both the horizontal directions. Each lead screw is driven by a stepper motor which rotates the screw. As the screw turns, a nut threaded onto the lead screw moves along its length, translating the clamp 112 attached to the nut in order to align the clamp 112 with the corresponding storage section.

[0060] Further, the microcontroller actuates the clamp 112 to retrieve an appropriate cup from the designated storage section, as determined by the beverage type and volume selected by the user. The clamp 112 used herein is a mechanical gripping unit configured to hold cups of various shapes and sizes. The clamp 112 consists of two or more movable jaws or arms lined with a non-slip, soft material to securely grasp cups without damaging them.

[0061] These jaws are mounted on a motorized linear actuator or a rack-and-pinion arrangement that enables them to move toward or away from each other in a controlled manner. Once the jaws are aligned, the jaws close gently but firmly around the cup using controlled torque, for ensuring a secure grip without causing deformation or slippage. Once the correct cup is grasped, the actuator 113 guides the clamp 112 along the two axes to place the cup into the beverage holding unit 109 of the cascading section.

[0062] Upon placement of the cup into the holding unit 109, a quality control module is activated by the microcontroller to analyze the quality of the beverage prior to dispensing. The quality control module ensures the beverage is safe, fresh, and meets quality parameters before it is delivered to the user. The quality control module includes:

1) A digital lactometer and an electronic nose: A digital lactometer and an electronic nose that are integrated within the module to ensure beverage freshness and spoilage detection. The lactometer assesses the density of beverage, to detect dilution or spoilage based on specific gravity readings. The lactometer includes a hollow waterproof probe, piezoelectric or capacitive density sensor, and a temperature sensor. When the lactometer is dipped into beverage, the density sensor evaluates the buoyant force acting on the probe, which changes based on the beverage density. Simultaneously, the temperature sensor records the beverage temperature to apply corrections. The microcontroller processes both density and temperature inputs to compute the specific gravity. If the specific gravity deviates from standard values, the microcontroller alerts for possible spoilage.

• The electronic nose consists of an array of chemical sensors and pattern recognition means, that detects the presence of undesirable volatile organic compounds (VOCs), by measuring changes in electrical properties such as resistance or conductivity when exposed to different gases, which indicate spoilage, fermentation, or contamination in the beverage. The sensor data is processed by the microcontroller, which analyzes the gas composition and compares the pattern with a pre-stored database to identify the quality status of the beverage. If the detected gas composition matches the profile of a fresh and uncontaminated beverage, the microcontroller confirms the beverage as safe for dispensing. However, if the sensor array detects VOC patterns indicating spoilage, such as elevated levels of ethanol, ammonia, or sulfur compounds, the microcontroller flags the beverage as compromised.

2) A Near-Infrared (NIR) spectroscopic sensor: A Near-Infrared (NIR) spectroscopic sensor is integrated within the module to perform non-invasive chemical analysis of the beverage. This sensor scans the beverage's spectral signature in the near-infrared range to identify its molecular composition and concentration of key ingredients such as sugar, caffeine, or other additives. The data is then compared by the microcontroller against predefined quality standards stored in the internal database to ensure the beverage matches its intended formulation.

3) A plurality of LED indicators: Multiple LED indicators are mounted on the external surface of the quality control module to visually communicate the beverage’s freshness status to the user. Based on the data received from the digital lactometer, electronic nose, and the NIR spectroscopic sensor, the microcontroller activates the appropriate LED indicators to display the freshness status of the beverage. If the beverage passes all quality checks, such as optimal milk density from the digital lactometer, absence of spoilage-indicating VOCs from the electronic nose, and suitable chemical composition from the NIR spectroscopic sensor, the microcontroller switches on a green LED, signaling that the beverage is fresh and safe for consumption. Conversely, if any parameter falls outside the acceptable thresholds, indicating potential spoilage or contamination, the microcontroller activates a red LED to alert the user and halt the dispensing of the beverage into the cups.

4) A visual and tactile sensing arrangement: Visual and tactile sensing of the serving cup is performed by the image acquisition unit and a tactile sensor integrated with the quality control module. The camera associated with the image acquisition unit captures real-time visual data of the cup's exterior. The camera assesses parameters such as cup size, shape, orientation, and surface cleanliness to verify that the correct cup is selected and properly aligned over the beverage holding unit 109 for beverage dispensing.

• Simultaneously, the tactile sensor measures the texture and material hardness of the cup to determine the thermal characteristics such as heat retention and insulation of the serving cup. When the sensor makes contact with the cup surface, the texture is evaluated by sensing micro-patterns and surface roughness through variable pressure distribution. Simultaneously, the hardness is gauged by analyzing the resistance or force response to applied pressure. These physical properties are correlated with the cup’s thermal conductivity and heat dissipation rate. The microcontroller interprets the data to infer if the cup is suitable for hot beverage containment and accordingly adjust the heating unit, to ensure the beverage is dispensed at an optimal serving temperature.

[0063] A circular sliding unit 117 is installed in between the chambers 115 of the beverage dispensing unit 114 and the housing 104. Upon performing all the quality checks and adjusting the beverage temperature as per the thermal characteristics of the cup, the microcontroller actuates the sliding unit 117 to align the appropriate storage chamber with the outlet nozzle 116 positioned over the cup. Upon actuation, the motor activates and rotates the circular platform via the gear assembly. Position sensors continuously monitor the rotational angle to ensure precise alignment. Once the selected chamber is correctly positioned above the cup, the motor halts to stop further translation of the chamber.

[0064] Upon aligning the chamber properly, the microcontroller actuates the ball and socket joint integrated with the outlet nozzle 116 of the chamber to orient and position the nozzle 116 precisely over the designated cup. The ball and socket joint enables multi-directional flexibility, for allowing the nozzle 116 to tilt or rotate for optimal dispensing angle based on the cup’s location, height, and type. Once the nozzle 116 is correctly oriented, the microcontroller actuates the nozzle 116 to release the prepared beverage into the cup.

[0065] The outlet nozzle 116 is configured to dispense beverages into the cup with precision and minimal spillage. When the microcontroller sends a signal, the solenoid valve or motor activates, for opening the liquid channel to allow the beverage to flow from the chamber. The flow rate and duration are regulated based on pre-set beverage volume requirements or the size of the cup.

[0066] Once the beverage is dispensed into the cup, the microcontroller actuates a pneumatic unit mechanically linked to the vertically extendable means 103 to apply regulated air pressure to smoothly raise the housing 104 along with the beverage carrying assembly 105, and align with the access opening of the designated passenger coach. The pneumatic unit used herein works in the similar manner as described above.

[0067] A sensing module comprising at least one proximity sensor functionally coupled with the image acquisition unit and arranged over the housing 104, to detect the presence of the passenger near the coach opening, and verify safe handover conditions before initiating the delivery. Synchronously, the camera of the image acquisition unit captures real-time visuals to assess alignment precision based on the coach geometry, door dimensions, and the user’s detected location.

[0068] The data from both the proximity sensor and the camera is processed by the microcontroller to determine whether all predefined conditions for a safe and successful beverage handover are satisfied. Atleast one translating means 108, selected from a sliding rail assembly, a drawer arrangement, or a motorized ball screw arrangement, is configured on either side of extendable plate 106 of the beverage carrying assembly 105.

[0069] Once all predefined conditions for safe and successful beverage handover are satisfied, the microcontroller calculates the required extension length based on real-time positional data gathered from the proximity sensor and the image acquisition unit, which together determine the distance of the passenger from the beverage carrying assembly 105. Based on the evaluated length, the microcontroller actuates the drawer arrangement to extend and provide horizontal movement to the plate 106 into the train coach, for precisely placing the cup accommodated over the beverage holding unit 109, to a position within the passenger’s reach.

[0070] Once the handover is complete or upon detection of the cup being removed by the passenger, as determined through input from the proximity sensor or the image acquisition unit, the microcontroller transmits a signal to the drawer arrangement to retract the plate 106 back into the housing 104, for completing the beverage delivery. Following this, the user is prompted through the user interface to complete the digital payment process through a payment module associated with the device.

[0071] The user is required to scan a QR (Quick Response) code printed over the housing 104, using any standard online payment means, which links to a secure payment gateway for completing the digital payment for the order. The microcontroller, in coordination with the communication module, verifies the completion of the payment process in real-time and logs the transaction details in the device database for record-keeping.

[0072] In addition to the digital payment option, the device includes a secure currency deposit chamber for facilitating manual payments. The chamber is configured with an iris lid that opens only upon detection of a valid payment request and confirmation of the beverage delivery, for restricting unauthorized access. The iris lid is motorized and controlled by the microcontroller to open or close in response to transaction commands.

[0073] A scanning unit comprising an optical and magnetic sensor, is integrated within the currency deposit chamber and configured to authenticate the deposited currency by the user/ passenger. The scanning unit validates the authenticity and denomination of the currency based on visual patterns, embedded magnetic strips, and UV markers. The scanned data is analyzed by the microcontroller to calculate the total amount deposited.

[0074] If the deposited amount exceeds the beverage cost, the microcontroller actuates a motorized clamp positioned within the chamber to retrieve the required excess amount from a secured reserve slot and releases the excess currency through a designated return chute. The microcontroller ensures secure, accurate, and transparent cash handling, providing a backup option in case digital payments are not feasible.

[0075] Although the field of the invention has been described herein with limited reference to specific embodiments, this description is not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternate embodiments of the invention, will become apparent to persons skilled in the art upon reference to the description of the invention. , C , Claims:1) A beverage serving device for railways, comprising:

i) a mobile platform 101 configured for autonomous movement along a transit station platform and selectively aligned with a passenger coach opening;
ii) a vertically extendable means 103 mounted on the upper portion of the platform 101, where the terminating end of the extendable means 103 is equipped with a housing 104, operable to transfer a beverage carrying assembly 105 through an access opening of a train coach, the beverage carrying assembly 105 comprising
a) an extendable plate 106 with a cascading section;
b) at least one translating means 108 on either side of the plate 106 for horizontal movement into the train coach; and
c) a plurality of beverage holding units 109 integrated within the cascading sections 107 for securely transporting beverage cups.
iii) a beverage dispensing unit 114 to deliver a selected beverage into the cup based on the user input, where the beverage dispensing unit 114 comprises:
a) a plurality of storage chambers 115 for storing different beverages;
b) a controlled outlet nozzle 116 connected to each chamber outlet via a rotating means for targeted dispensing; and
c) a circular sliding unit 117 installed in between the chambers 115 and the housing 104 for rotating the chambers 115 as per the requirement.
iv) a sensing module configured to detect passenger presence, alignment accuracy and handover conditions for safe beverage transfer;
v) a user interface configured to receive passengers input and enables passengers to:
a) browse beverage menus based on the current location as detected via a Global Positioning System (GPS) module to recommend region-specific beverages via the user interface
b) place beverage orders remotely;
c) tracks the delivery device’s location; and
d) scan a QR (Quick Response) code to verify ticket identity and authorize the beverage dispensing process.

2) The device as claimed in claim 1, wherein the beverage carrying assembly 105 further comprises a two-axis slider 110 mounted on the housing 104 for supporting multiple cup storage sections 111 for different cup types and a clamp 112 and actuator 113 means to retrieve and align appropriate cups based on the selected beverage and cup properties.

3) The device as claimed in claim 1, wherein the autonomous movement of the base platform 101 is facilitated by plurality of omnidirectional wheels 102 coupled with an individual motor configured to enable precise maneuvering, orientation adjustment, and collision avoidance during movement along the train platform.

4) The device as claimed in claim 1, wherein the translating means 108 provided on either side of the plate 106 is selected from a sliding rail assembly, a drawer arrangement, and a motorized ball screw arrangement to facilitate controlled horizontal extension of the plate 106 into the train coach.

5) The device as claimed in claim 1, wherein the dispensing unit 114 includes a substance preparation means 201 adapted to perform at least one of ingredient mixing, roasting, grinding, or strength analysis prior to beverage output.

6) The device as claimed in claim 1, wherein the sensing module comprising at least one proximity sensor and image acquisition unit for safe beverage transfer.

7) The device as claimed in claim 1, wherein a quality control module configured to analyze the quality of the beverage prior to dispensing, the quality control module includes:
a) a digital lactometer and electronic nose for freshness and spoilage detection;
b) a Near-Infrared (NIR) spectroscopic sensor for analyzing chemical signatures;
c) a plurality of LED indicators showing beverage freshness using red/green signals; and
d) visual and tactile sensing via image acquisition unit and a tactile sensor configured to determine the thermal characteristics of the serving cup and adjust heating accordingly via a heating unit.

8) The device as claimed in claim 1, wherein train movement is detected via:
a) a vibration sensor module monitoring platform or coach motion;
b) a microphone that detects train horn and noise patterns to infer arrival and departure events; and
c) machine learning protocols analyzing train schedule data to optimize beverage preparation and delivery timing.

9) The device as claimed in claim 1, wherein a payment module includes:
a) a QR (Quick Response) code for digital payments;
b) a secure currency deposit chamber with an iris lid and scanning unit to validate manual payments; and
c) a motorized clamp means to return excess currency based on computed balance.

10) The device as claimed in claim 5, wherein the substance preparation means 201 is configured to prepare beverage prior to dispensing, the substance preparation means 201 comprises:
a) a collapsible rod with a colorimetric sensor to determine beverage strength;
b) a plurality of storage units 202 for storing coffee powder, tea bags, and additives, connected to valves 203 and collapsible pipes 204 for precise dispensing; and
c) a preparation unit 205 with adjustable grind size and temperature control that aid in preparing beverage for the user.