A gas sensing and optical communication integrated system and its implementation method

Abstract

This invention discloses an integrated gas sensing and optical communication system and its implementation method, relating to the field of communication technology. In the system, a tunable light source module emits a wavelength-tunable laser signal; a functional material modulator performs spectral scanning of the laser signal based on the functional material, achieving phase modulation or amplitude modulation, and outputs the laser signal to the gas sensing area; a photodetector module receives the laser signal from the gas sensing area and generates sensing data; and an IoT interface module sends the sensing data to a remote monitoring platform and transmits control commands issued by the remote monitoring platform to the tunable light source module. Through the technical solution of this invention, gas sensing and communication functions are integrated, while supporting adaptation to multiple functional materials, improving system compatibility, detection accuracy, and response speed, and facilitating large-scale deployment.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to an integrated gas sensing and optical communication system and a method for implementing the integrated gas sensing and optical communication. Background Technology

[0002] Currently, gas sensing systems are typically independent of optical communication systems, lacking an integrated design. Traditional systems rely on external networks to transmit data, resulting in low real-time performance and intelligence, complex structures, and high costs.

[0003] Although sensing systems based on thin-film lithium niobate have emerged, they have not yet achieved integrated design of sensing and communication, making it impossible to realize gas detection and data feedback on the same platform. They also lack closed-loop feedback mechanisms and IoT access capabilities, and lack compatibility support for various optoelectronic materials, with the compatibility between different materials not being fully explored. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides an integrated gas sensing and optical communication system and its implementation method. By transmitting laser communication through the gas sensing area, the gas sensing and communication functions are integrated. It also supports adaptation to various functional materials, improving system compatibility, detection accuracy, and response speed. It is easy to deploy on a large scale and can be applied to multiple scenarios such as industrial safety monitoring, environmental monitoring, and smart healthcare.

[0005] To achieve the above objectives, the present invention provides an integrated gas sensing and optical communication system, comprising: a tunable light source module, a functional material modulator, a photodetector module, an Internet of Things interface module, and a remote monitoring platform;

[0006] The tunable light source module is used to emit laser signals with tunable wavelengths;

[0007] The functional material modulator is used to perform spectral scanning of the laser signal based on the functional material, to achieve phase modulation or amplitude modulation, and to output the laser signal to the gas sensing area.

[0008] The optical detection module receives the laser signal from the gas sensing area and generates sensing data;

[0009] The IoT interface module is used to send the sensing data to the remote monitoring platform and transmit the control commands issued by the remote monitoring platform to the tunable light source module.

[0010] In the above technical solution, preferably, the functional material modulator adopts one or a combination of two or more of the following: Mach-Zehnder interferometer structure, microring resonator structure, and phase shift modulator structure.

[0011] In the above technical solution, preferably, the functional material includes thin-film lithium niobate, indium phosphide, silicon nitride, tantalum oxide, silicon-based materials and / or polymer-inorganic composite materials.

[0012] In the above technical solution, preferably, the gas sensing area supports CH4, CO2, NH3, SF6 and NO. X Simultaneous identification and concentration measurement of at least three gas components.

[0013] In the above technical solution, preferably, the sensing data is uploaded back to the remote monitoring platform through intensity modulation, direct detection, or coherent detection.

[0014] In the above technical solution, preferably, the optical detection module adopts an InGaAs, Si or Ge photodetector, and the response band covers the near-infrared region of 0.8 to 2.0 μm.

[0015] In the above technical solution, preferably, the remote monitoring platform adopts one or a combination of two or more of the following protocols: MQTT, CoAP, HTTP, LoRaWAN, and NB-IoT.

[0016] This invention also proposes a method for integrating gas sensing and optical communication, applicable to the integrated gas sensing and optical communication system disclosed in any of the above technical solutions, comprising:

[0017] Laser signals within a preset wavelength range are emitted through a tunable light source module;

[0018] The laser signal is spectrally scanned using a functional material modulator to achieve phase modulation or amplitude modulation.

[0019] The modulated laser signal is output to the gas sensing area, the laser signal after being absorbed by the gas is received by the optical detection module, and the generated sensing data is transmitted to the remote monitoring platform.

[0020] The control commands issued by the remote monitoring platform are transmitted to the tunable light source module to adjust the laser signal parameters.

[0021] In the above technical solution, preferably, the step of performing spectral scanning of the laser signal using a functional material modulator to achieve phase modulation or amplitude modulation specifically includes:

[0022] The laser signal is spectrally scanned using a Mach-Zehnder interferometer structure, a microring resonator structure, and / or a phase shift modulator structure, based on thin-film lithium niobate, indium phosphide, silicon nitride, tantalum oxide, silicon-based materials, and / or polymer-inorganic composite materials, to achieve phase modulation or amplitude modulation.

[0023] In the above technical solution, preferably, the step of using a photodetector module to receive the laser signal after gas absorption and transmitting the generated sensor data to a remote monitoring platform includes the following specific steps:

[0024] InGaAs, Si, or Ge photodetectors are used to detect and receive CH4, CO2, NH3, SF6, and / or NO. X Laser signal after gas absorption;

[0025] The generated sensor data is transmitted back to the remote monitoring platform via the IoT interface module through intensity modulation, direct detection, or coherent detection.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: by transmitting laser communication through the gas sensing area, the gas sensing and communication functions are integrated, while supporting the adaptation of various functional materials, improving the system compatibility, detection accuracy and response speed, and making it easy to deploy on a large scale. It can be applied to multiple scenarios such as industrial safety monitoring, environmental monitoring, and smart healthcare. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an integrated gas sensing and optical communication system disclosed in an embodiment of the present invention.

[0028] Figure 2 This is a schematic diagram of a modulator structure using thin-film lithium niobate as a functional material, as disclosed in one embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of a modulator structure using silicon-based materials as functional materials, as disclosed in one embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of a modulator structure using indium phosphide as a functional material, as disclosed in one embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of a modulator structure using silicon nitride as a functional material, as disclosed in one embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of a modulator structure using tantalum oxide as a functional material, as disclosed in one embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram illustrating the principle of spectral scanning and gas absorption detection according to an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram illustrating the connection method between a remote monitoring platform and an optical communication link according to an embodiment of the present invention;

[0035] Figure 9 This is a schematic diagram of the connection architecture between an IoT interface and the cloud, as disclosed in one embodiment of the present invention. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] The present invention will now be described in further detail with reference to the accompanying drawings:

[0038] like Figure 1 As shown, a gas sensing and optical communication integrated system according to the present invention includes: a tunable light source module, a functional material modulator, a photodetector module, an Internet of Things interface module, and a remote monitoring platform;

[0039] The tunable light source module is used to emit laser signals with tunable wavelengths;

[0040] Functional material modulators are used to perform spectral scanning of laser signals based on functional materials, achieve phase modulation or amplitude modulation, and output laser signals to the gas sensing area.

[0041] The optical detection module receives laser signals from the gas sensing area and generates sensing data;

[0042] The IoT interface module is used to send sensor data to the remote monitoring platform and transmit control commands issued by the remote monitoring platform to the tunable light source module.

[0043] In this embodiment, by transmitting laser communication through the gas sensing area, the gas sensing and communication functions are integrated. It also supports the adaptation of various functional materials, which improves the system's compatibility, detection accuracy and response speed, and is easy to deploy on a large scale. It can be applied to multiple scenarios such as industrial safety monitoring, environmental monitoring, smart healthcare, smart cities or military security.

[0044] In the above embodiments, preferably, the functional material modulator adopts one or a combination of two or more of the following: Mach-Zehnder interferometer structure, microring resonator structure, and phase shift modulator structure.

[0045] In the above embodiments, preferably, the functional materials include thin-film lithium niobate, indium phosphide, silicon nitride, tantalum oxide, silicon-based materials and / or polymer-inorganic composite materials.

[0046] In the above embodiments, preferably, the gas sensing region supports CH4, CO2, NH3, SF6, and NO. X Simultaneous identification and concentration measurement of at least three gas components.

[0047] In the above embodiments, preferably, the sensing data is uploaded back to the remote monitoring platform via intensity modulation, direct detection, or coherent detection.

[0048] In the above embodiments, preferably, the photodetector module uses an InGaAs, Si, or Ge photodetector, with a response band covering the near-infrared region of 0.8–2.0 μm.

[0049] In the above embodiments, preferably, the remote monitoring platform adopts one or a combination of two or more of the following protocols: MQTT, CoAP, HTTP, LoRaWAN, and NB-IoT.

[0050] This invention also proposes a method for integrating gas sensing and optical communication, applicable to the integrated gas sensing and optical communication system disclosed in any of the above embodiments, comprising:

[0051] Laser signals within a preset wavelength range are emitted through a tunable light source module;

[0052] Phase modulation or amplitude modulation is achieved by scanning the laser signal using a functional material modulator.

[0053] The modulated laser signal is output to the gas sensing area, and the laser signal after being absorbed by the gas is received by the optical detection module. The generated sensing data is then transmitted to the remote monitoring platform.

[0054] The control commands issued by the remote monitoring platform are transmitted to the tunable light source module to adjust the laser signal parameters.

[0055] In the above embodiments, preferably, the laser signal is spectrally scanned using a functional material modulator to achieve phase modulation or amplitude modulation. The specific process includes:

[0056] By employing Mach-Zehnder interferometer structures, microring resonator structures, and / or phase shift modulator structures, and based on thin-film lithium niobate, indium phosphide, silicon nitride, tantalum oxide, silicon-based materials, and / or polymer-inorganic composite materials, the laser signal is spectrally scanned to achieve phase modulation or amplitude modulation.

[0057] In the above embodiment, preferably, a photodetector module is used to receive the laser signal after gas absorption and transmit the generated sensor data to a remote monitoring platform. The specific process includes:

[0058] InGaAs, Si, or Ge photodetectors are used to detect and receive CH4, CO2, NH3, SF6, and / or NO. X Laser signal after gas absorption;

[0059] The generated sensor data is transmitted back to the remote monitoring platform via the IoT interface module through intensity modulation, direct detection, or coherent detection.

[0060] like Figures 2 to 6 As shown, according to the gas sensing and optical communication integrated system and implementation method disclosed in the above embodiments, during implementation, the functional material modulator can use the following combinations to achieve phase or amplitude modulation of the laser signal:

[0061] Modulator A: Uses thin-film lithium niobate as the functional material and adopts a Mach-Zehnder interferometer (MZI) structure;

[0062] Modulator B: Uses silicon-based materials as the functional material and adopts a micro-ring resonator structure;

[0063] Modulator C: Indium phosphide is used as the functional material, and a phase shift modulator structure is adopted;

[0064] Modulator D: Uses silicon nitride as the functional material and adopts a waveguide modulator structure;

[0065] Modulator E: uses tantalum oxide as the functional material and adopts other structures (such as directional couplers, Mach-Zehnder branch structures, etc.).

[0066] The aforementioned materials and structures can all achieve modulation of laser signals, making them suitable for the gas sensing and optical communication integrated system proposed in this invention.

[0067] In the implementation process, taking a DFB laser as an example, the emitted laser signal enters the gas sensing region after passing through a thin-film lithium niobate modulator. During this process, the laser wavelength is tuned to near the characteristic absorption peak of the target gas. The detector receives the signal absorbed by the gas and converts it into an electrical signal for output.

[0068] like Figure 7 As shown, the absorption peak distributions of typical gases such as CH4, CO2, and NH3, as well as the matching relationship between the laser scanning path and the absorption peaks, are also shown, thereby enabling the simultaneous detection and identification of multi-component gases.

[0069] like Figure 8 As shown, after receiving the sensor data, the remote monitoring platform transmits the control commands back to the local sensor node via the optical communication link.

[0070] like Figure 9As shown, the sensing terminal transmits sensing data to the gateway / edge computing unit based on communication methods such as LoRaWAN, NB-IoT, and Wi-Fi. The gateway / edge computing unit then transmits the data to the cloud server or mobile terminal / PC client.

[0071] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A gas sensing and optical communication integrated system, characterized in that, include: Tunable light source module, functional material modulator, light detection module, Internet of Things interface module and remote monitoring platform; The tunable light source module is used to emit laser signals with tunable wavelengths; The functional material modulator is used to perform spectral scanning of the laser signal based on the functional material, to achieve phase modulation or amplitude modulation, and to output the laser signal to the gas sensing area. The optical detection module receives the laser signal from the gas sensing area and generates sensing data; The IoT interface module is used to send the sensing data to the remote monitoring platform and transmit the control commands issued by the remote monitoring platform to the tunable light source module. The functional material modulator adopts one or a combination of two or more of the following structures: Mach-Zehnder interferometer structure, micro-ring resonator structure, and phase shift modulator structure. The functional materials include thin-film lithium niobate, indium phosphide, silicon nitride, tantalum oxide, silicon-based materials, and / or polymer-inorganic composite materials.

2. The integrated gas sensing and optical communication system according to claim 1, characterized in that, The gas sensing region supports CH4, CO2, NH3, SF6, and NO. X Simultaneous identification and concentration measurement of at least three gas components.

3. The integrated gas sensing and optical communication system according to claim 2, characterized in that, The sensor data is uploaded back to the remote monitoring platform via intensity modulation, direct detection, or coherent detection.

4. The integrated gas sensing and optical communication system according to claim 3, characterized in that, The optical detection module uses InGaAs, Si, or Ge photodetectors, with a response band covering the near-infrared region of 0.8–2.0 μm.

5. The integrated gas sensing and optical communication system according to claim 4, characterized in that, The remote monitoring platform adopts one or a combination of two or more of the following protocols: MQTT, CoAP, HTTP, LoRaWAN, and NB-IoT.

6. A method for integrating gas sensing and optical communication, characterized in that, The gas sensing and optical communication integrated system as described in any one of claims 1 to 5 includes: Laser signals within a preset wavelength range are emitted through a tunable light source module; The laser signal is spectrally scanned using a functional material modulator to achieve phase modulation or amplitude modulation. The modulated laser signal is output to the gas sensing area, the laser signal after being absorbed by the gas is received by the optical detection module, and the generated sensing data is transmitted to the remote monitoring platform. The control commands issued by the remote monitoring platform are transmitted to the tunable light source module to adjust the laser signal parameters.

7. The method for integrating gas sensing and optical communication according to claim 6, characterized in that, The process of performing spectral scanning of the laser signal using a functional material modulator to achieve phase modulation or amplitude modulation includes: The laser signal is spectrally scanned using a Mach-Zehnder interferometer structure, a microring resonator structure, and / or a phase shift modulator structure, based on thin-film lithium niobate, indium phosphide, silicon nitride, tantalum oxide, silicon-based materials, and / or polymer-inorganic composite materials, to achieve phase modulation or amplitude modulation.

8. The method for integrating gas sensing and optical communication according to claim 6, characterized in that, The process of using a photodetector module to receive the laser signal after gas absorption and transmitting the generated sensor data to the remote monitoring platform includes: InGaAs, Si, or Ge photodetectors are used to detect and receive CH4, CO2, NH3, SF6, and / or NO. X Laser signal after gas absorption; The generated sensor data is transmitted back to the remote monitoring platform via the IoT interface module through intensity modulation, direct detection, or coherent detection.

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