Description:TECHNICAL FIELD
[0001] The present disclosure relates, in general, to bidirectional serial communication using a single LED, and more specifically, relates to a system and method for bidirectional serial communication.

BACKGROUND
[0002] In an electronic energy meter, optical communication is employed for the transmission of energy data to a meter reading device, wherein an infrared (IR) light-emitting diode (LED) serves as the transmitter, and a phototransistor functions as the receiver. The communication protocol adheres to the Device Language Message Specification (DLMS) standard, operating in a half-duplex mode.
[0003] In light of the communication being half duplex, it is desired to overcome the drawbacks, shortcomings, and limitations associated with existing solutions, and develop a method wherein a singular infrared (IR) light-emitting diode (LED) is employed for bidirectional communication utilizing the DLMS protocol. The disclosed technique involves the IR LED serving dual purposes as both a transmitter and receiver, thereby obviating the necessity for a separate phototransistor as a receiver.

OBJECTS OF THE PRESENT DISCLOSURE
[0004] An object of the present disclosure relates, in general, to a bidirectional serial communication using a single LED, and more specifically, relates to a system and method for bidirectional serial communication.
[0005] Another object of the present disclosure is to provide a system that utilizes a single conventional Infrared Light Emitting Diode (IR LED) for both transmission and reception eliminating the need for separate components, resulting in a cost-effective design.
[0006] Another object of the present disclosure is to provide a system that maintains data rate despite the dual functionality of the IR LED, thereby providing efficient bidirectional communication without sacrificing transmission speed or quality.
[0007] Yet another object of the present disclosure is to provide a system that provides a single LED that resolves the problem of orientation, as there is no longer a need to align separate transmitters and receivers. This simplification enhances user-friendliness and reduces potential installation challenges.

SUMMARY
[0008] The present disclosure relates in general, to bidirectional serial communication using a single LED, and more specifically, relates to a system and method for bidirectional serial communication. The main objective of the present disclosure is to overcome the drawbacks, limitations, and shortcomings of the existing system and solution, by providing a singular light-emitting diode (LED) that is utilized for both data transmission and reception within a half-duplex bidirectional configuration. The intended application of the system is the transfer of load survey data from an electronic energy meter to the utility, thereby establishing a simplified and efficient communication method.
[0009] The present disclosure relates to a system for bidirectional communication, the system includes an infrared light emitter is configured to operate as both a transmitter and a receiver, wherein infrared light emitter is configured to transmit a set of data from an electronic energy meter to a utility server and receive configuration data from the utility server to the electronic energy meter thereby obviating the necessity for a separate phototransistor as the receiver.
[0010] In an aspect, the infrared light emitter at transmission phase configured to deactivate voltage supply (VDD) and activate the infrared light emitter through a series resistor in response to a transmission signal (Tx), facilitating an emission of an infrared light containing the set of data. The set of data pertain to load survey data.
[0011] In another aspect, the infrared light emitter at reception phase configured to deactivate a transmission pin (Tx pin) during an anticipation of configuration data from the utility server and selectively activate the voltage supply (VDD). In response to incoming infrared signals from the utility server, representing received data, a voltage is generated at a predefined range by the infrared light emitter. The predefined range is 100-200mV. The configuration data pertain to updates or instructions from the utility server.
[0012] In another aspect, the generated voltage by the infrared light emitter is directed to a voltage comparator configured with a reference voltage set to less than 100mV, wherein subsequent amplification of the received signal to the required voltage level enables the energy meter to interpret and implement received instructions or updates during the reception phase. The infrared light emitter is an IR LED.
[0013] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The following drawings form part of the present specification and are included to further illustrate aspects of the present disclosure. The disclosure may be better understood by reference to the drawings in combination with the detailed description of the specific embodiments presented herein.
[0015] FIG. 1 illustrates an exemplary circuit diagram of a system for bidirectional communication, in accordance with an embodiment of the present disclosure.
[0016] FIG. 2 illustrates an exemplary flow chart of a method for bidirectional communication, in accordance with an embodiment of the present disclosure.

DETAILED DESCRIPTION
[0017] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. If the specification states a component or feature “may”, “can”, “could”, or “might” be included or have a characteristic, that particular component or feature is not required to be included or have the characteristic.
[0018] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[0019] The present disclosure relates, in general, to a bidirectional serial communication using single LED, and more specifically, relates to a system and method for bidirectional serial communication.
[0020] The present disclosure relates to a system for bidirectional communication, the system includes an infrared light emitter is configured to operate as both a transmitter and a receiver, wherein infrared light emitter is configured to transmit a set of data from an electronic energy meter to a utility server and receive configuration data from the utility server to the electronic energy meter thereby obviating the necessity for a separate phototransistor as the receiver.
[0021] In an aspect, the infrared light emitter at transmission phase configured to deactivate voltage supply (VDD) and activate the infrared light emitter through a series resistor in response to a transmission signal (Tx), facilitating an emission of an infrared light containing the set of data. The set of data pertain to load survey data.
[0022] In another aspect, the infrared light emitter at reception phase configured to deactivate a transmission pin (Tx pin) during an anticipation of configuration data from the utility server and selectively activate the voltage supply (VDD). In response to incoming infrared signals from the utility server, representing received data, a voltage is generated at a predefined range by the infrared light emitter. The predefined range is 100-200mV. The configuration data pertains to updates or instructions from the utility server.
[0023] In another aspect, the generated voltage by the infrared light emitter is directed to a voltage comparator configured with a reference voltage set to less than 100mV, wherein subsequent amplification of the received signal to the required voltage level enables the energy meter to interpret and implement received instructions or updates during the reception phase. The infrared light emitter is an IR LED. The present disclosure can be described in enabling detail in the following examples, which may represent more than one embodiment of the present disclosure.
[0024] The advantages achieved by the system of the present disclosure can be clear from the embodiments provided herein. The system introduces a cost-effective and streamlined approach to bidirectional communication by utilizing a single infrared light emitting diode (IR LED) for both transmission and reception. The system eliminates the need for separate components, contributing to a more economical solution. Despite the dual functionality of the IR LED, the system ensures the maintenance of data rates, ensuring efficient bidirectional communication without compromising on transmission speed or quality. Furthermore, the integration of a single LED addresses the challenge of orientation, removing the necessity to align separate transmitters and receivers. This simplification enhances user-friendliness and reduces potential installation challenges, making the system a more accessible and practical solution for diverse applications. The description of terms and features related to the present disclosure shall be clear from the embodiments that are illustrated and described; however, the invention is not limited to these embodiments only. Numerous modifications, changes, variations, substitutions, and equivalents of the embodiments are possible within the scope of the present disclosure. Additionally, the invention can include other embodiments that are within the scope of the claims but are not described in detail with respect to the following description.
[0025] FIG. 1 illustrates an exemplary circuit diagram of a system for bidirectional communication, in accordance with an embodiment of the present disclosure.
[0026] Referring to FIG. 1, a system 100 for bidirectional communication utilizing a single infrared light emitter 102 is disclosed. The circuit diagram of system 100 can include the infrared light emitter 102, voltage supply 104, series resistor 106 and voltage comparator 108. The system for bidirectional communication utilizing the DLMS protocol.
[0027] In an exemplary embodiment, an infrared light emitter 102 can be an infrared light emitting diode (IR LED) 102. The infrared light emitter 102 is configured to emit infrared light, serving the dual purpose of both transmitting and receiving data in the bidirectional communication system. The voltage supply 104 is a power source providing electrical energy to the components of the system, including the infrared light emitter 102, during specific phases of the bidirectional communication process.
[0028] In an embodiment, the series resistor 106 is connected in series with the infrared light emitter 102, regulating the flow of current and ensuring controlled activation during the transmission phase, thereby facilitating the emission of infrared light. The voltage comparator 108 compares the generated voltage from the infrared light emitter 102 during the reception phase with a reference voltage set to less than 100mV. It amplifies the received signal to the required voltage level, enabling the interpretation and implementation of received instructions or updates by the electronic energy meter.
[0029] In an embodiment, the present disclosure leverages the unique property of an LED, which, when exposed to wavelengths slightly below its peak emitting wavelength, can function not only as a transmitter but also as a receiver. In the transmitting mode, the IR LED operates conventionally, being forward-biased to emit light in accordance with the transmitted signal. In the receiving mode, a small voltage is generated across the IR LED when illuminated by infrared light. This voltage is directed to the voltage comparator 108, elevating it to higher voltage levels, thereby serving as the received signal. This dual functionality of the IR LED as both a transmitter and receiver enhance the efficiency and simplicity of bidirectional communication.
[0030] The disclosed system involves selectively activating and deactivating the voltage supply (VDD) during the transmission and reception phases, respectively. The IR LED 102 is utilized as a transmitter during the transmission phase, activated by the transmission (Tx) signal through a series resistor 106. In the reception phase, the transmission pin (Tx pin) is deactivated, and the voltage supply (VDD) is turned on, causing the IR LED to generate a voltage in a predetermined range e.g., 100-200mV in response to the received signal. This generated voltage is then processed by the voltage comparator 108 with a reference voltage set below 100mV, amplifying the received signal to the required voltage level.
[0031] In an implementation, during the transmission phase (Tx), the voltage supply (VDD) is turned off, and the IR LED 102 is activated by the transmission (Tx) signal through the series resistor 106. This ensures that the IR LED 102 emits light in response to the transmitted signal.
[0032] In the reception phase (Rx), the transmission pin (Tx pin) is deactivated, and the voltage supply (VDD) is turned on. During this phase, a small voltage in the range of 100-200mV is generated across the IR LED 102 in accordance with the received signal. This voltage is then directed to the voltage comparator 108, which has a reference voltage set to less than 100mV. The received signal is subsequently amplified to the required voltage level.
[0033] For example, in an electronic energy meter, the disclosed bidirectional communication system could be employed for transmitting and receiving data related to energy consumption and meter readings. During the transmission phase, when the energy meter needs to send the accumulated energy data to a utility server, the voltage supply (VDD) to the IR LED is turned off. The IR LED is then activated by the transmission signal (Tx) through the series resistor, emitting infrared light containing the load survey data.
[0034] In the reception phase, when the energy meter expects configuration updates or new instructions from the utility server, the transmission pin (Tx pin) is deactivated, and the voltage supply (VDD) is turned on. In response to the incoming infrared signals from the utility server, the IR LED generates a small voltage in the range of 100-200mV. This voltage, representing the received data, is processed through a voltage comparator with a reference voltage set to less than 100mV. The received signal is then amplified to the required voltage level, allowing the energy meter to interpret and implement the received instructions or updates. Thus, the application of an electronic energy meter demonstrates how the bidirectional communication system using a single IR LED 102 could enhance the efficiency and cost-effectiveness of data exchange in the context of energy monitoring and management.
[0035] Thus, the present invention overcomes the drawbacks, shortcomings, and limitations associated with existing solutions, and provides a system that introduces a cost-effective and streamlined approach to bidirectional communication by utilizing a single infrared light emitting diode (IR LED) for both transmission and reception. The system eliminates the need for separate components, contributing to a more economical solution. Despite the dual functionality of the IR LED, the system ensures the maintenance of data rates, ensuring efficient bidirectional communication without compromising on transmission speed or quality. Furthermore, the integration of a single LED addresses the challenge of orientation, removing the necessity to align separate transmitters and receivers. This simplification enhances user-friendliness and reduces potential installation challenges, making the system a more accessible and practical solution for diverse applications.
[0036] FIG. 2 illustrates an exemplary flow chart of a method for bidirectional communication, in accordance with an embodiment of the present disclosure.
[0037] The method 200 includes block 202, the infrared light emitter is configured to operate as both a transmitter and a receiver.
[0038] At block 204, the infrared light emitter transmits a set of data from an electronic energy meter to a utility server and at block 206, the infrared light emitter receives configuration data from the utility server to the electronic energy meter.
[0039] It will be apparent to those skilled in the art that the system 100 of the disclosure may be provided using some or all of the mentioned features and components without departing from the scope of the present disclosure. While various embodiments of the present disclosure have been illustrated and described herein, it will be clear that the disclosure is not limited to these embodiments only. Numerous modifications, changes, variations, substitutions, and equivalents will be apparent to those skilled in the art, without departing from the spirit and scope of the disclosure, as described in the claims.

ADVANTAGES OF THE PRESENT INVENTION
[0040] The present disclosure provides a system that utilizes a single conventional Infrared Light Emitting Diode (IR LED) for both transmission and reception eliminating the need for separate components, resulting in a cost-effective design.
[0041] The present disclosure provides a system that maintains data rate despite the dual functionality of the IR LED, thereby providing efficient bidirectional communication without sacrificing transmission speed or quality.
[0042] The present disclosure provides a system that provides a single LED that resolves the problem of orientation, as there is no longer a need to align separate transmitters and receivers. This simplification enhances user-friendliness and reduces potential installation challenges.

, Claims:1. A system (100) for bidirectional communication, the system comprising:
an infrared light emitter (102) is configured to operate as both a transmitter and a receiver, wherein the infrared light emitter is configured to:
transmit a set of data from an electronic energy meter to a utility server; and
receive configuration data from the utility server to the electronic energy meter thereby obviating the necessity for a separate phototransistor as the receiver.
2. The system as claimed in claim 1, wherein the infrared light emitter at transmission phase configured to:
deactivate voltage supply (VDD) (104); and
activate the infrared light emitter (102) through a series resistor (106) in response to a transmission signal (Tx), facilitating an emission of an infrared light containing the set of data.
3. The system as claimed in claim 1, wherein the set of data pertains to load survey data.
4. The system as claimed in claim 1, wherein the infrared light emitter at a reception phase configured to:
deactivate a transmission pin (Tx pin) during an anticipation of configuration data from the utility server; and
selectively activate the voltage supply (VDD) (104).
5. The system as claimed in claim 4, wherein in response to incoming infrared signals from the utility server, representing received data, a voltage is generated at a predefined range by the infrared light emitter
6. The system as claimed in claim 5, wherein the predefined range is 100-200mV
7. The system as claimed in claim 4, wherein the configuration data pertain to updates or instructions from the utility server.
8. The system as claimed in claim 5, wherein the generated voltage by the infrared light emitter is directed to a voltage comparator configured with a reference voltage set to less than 100mV, wherein subsequent amplification of received signal to the required voltage level enables the energy meter to interpret and implement received instructions or updates during the reception phase.
9. The system as claimed in claim 1, wherein the infrared light emitter is an infrared (IR) light emitting diode (LED).
10. A method (200) for bidirectional communication, the method comprising:
configuring (202) an infrared light emitter to operate as both a transmitter and a receiver;
transmitting (204) a set of data from an electronic energy meter to a utility server using the infrared light emitter; and
receiving (206) configuration data from the utility server to the electronic energy meter through the infrared light emitter, thereby obviating the necessity for a separate phototransistor as the receiver.