Cross-medium optical communication device

Abstract

The present invention relates to a cross-medium optical communication device. The cross-medium optical communication device includes: a first communication unit, including a first signal source structure, a first switching structure, and a first optical communication structure, the first optical communication structure including a first light emitting structure and a first light receiving structure, the first light emitting structure being used to emit a first blue light signal underwater, and the first light receiving structure being used to receive a second blue light signal from underwater; a second communication unit, including a second signal source structure, a second switching structure, and a second optical communication structure, the second optical communication structure including a second light emitting structure and a second light receiving structure, the second light emitting structure being used to emit a first white light signal above water, the second light receiving structure being used to receive a second white light signal from above water, and the second switching structure being connected to the first switching structure. The present invention realizes cross-medium optical communication and enhances the functionality of the optical communication device.

Description

Technical Field

[0001] The present invention relates to the field of optical communication technology, and in particular to a cross-medium optical communication device. Background Art

[0002] Optical communication technology transmits information by controlling the on / off behavior of LEDs (light-emitting diodes). Currently, state-of-the-art visible light communication technology can achieve transmission rates of up to Gb / s. Traditional radio signal transmission equipment has many limitations, such as high cost and low efficiency. For example, millions of base stations are built worldwide to enhance mobile phone transmission signals, but most of the energy is consumed by cooling the equipment, resulting in an energy efficiency of only 5%. In contrast, optical communication technology essentially transmits information through light signals. The required transmission equipment only requires LEDs, and it does not occupy existing frequency resources, thus avoiding interference with existing frequency band equipment. This makes visible light communication a greener and more environmentally friendly method with excellent communication quality and confidentiality. Optical communication is gaining increasing attention from universities and research institutions as an alternative to radio frequency communication. However, current optical communication devices can only transmit data in the same medium, limiting their application.

[0003] Therefore, how to expand the functions of optical communication devices and achieve cross-media transmission is a technical problem that needs to be solved urgently. Summary of the Invention

[0004] The present invention provides a cross-medium optical communication device for realizing cross-medium transmission of the optical communication device, thereby enhancing the function of the optical communication device and expanding the application field of the optical communication device.

[0005] In order to solve the above problems, the present invention provides a cross-medium optical communication device, comprising:

[0006] A first communication unit includes a first information source structure for collecting first underwater environmental information, a first switching structure connected to the first information source structure, and a first optical communication structure connected to the first switching structure, wherein the first optical communication structure includes a first light transmitting structure and a first light receiving structure, wherein the first light transmitting structure is configured to transmit a first blue light signal underwater, and the first light receiving structure is configured to receive a second blue light signal from underwater;

[0007] The second communication unit includes a second signal source structure for collecting first environmental information above water, a second switching structure connected to the second signal source structure, and a second optical communication structure connected to the second switching structure. The second optical communication structure includes a second light emitting structure and a second light receiving structure. The second light emitting structure is used to transmit a first white light signal to the surface of the water, and the second light receiving structure is used to receive a second white light signal from the surface of the water. The second switching structure is connected to the first switching structure, and the first underwater environmental information can be transmitted to the second switching structure via the first switching structure, and the first above water environmental information can be transmitted to the first switching structure via the second switching structure.

[0008] Optionally, the first optical communication structure further includes a first main control structure connecting the first light emitting structure and the first light receiving structure, the first light emitting structure includes a first signal transmission driving circuit electrically connected to the first switching structure, and a first LED array electrically connected to the first signal transmission driving circuit, and the first light receiving structure includes a first photodetector and a first signal receiving conditioning circuit electrically connected to the first photodetector;

[0009] The second optical communication structure also includes a second main control structure connecting the second light emitting structure and the second light receiving structure, the second light emitting structure includes a second signal emission driving circuit electrically connected to the second switching structure, and a second LED array electrically connected to the second signal emission driving circuit, the second light receiving structure includes a second photodetector, and a second signal receiving conditioning circuit electrically connected to the second photodetector.

[0010] Optionally, the first light receiving structure is further configured to convert the received second blue light signal into second underwater environment information; the first switching structure is further connected to the first light receiving structure, configured to transmit the second underwater environment information to the outside world via a wireless network;

[0011] The second light receiving structure is also used to convert the received second white light signal into second water environment information; the second switching structure is connected to the second light receiving structure, and is used to transmit the second water environment information to the outside world through a wireless network.

[0012] Optionally, also include:

[0013] a third communication unit, comprising a third information source structure for collecting third environmental information above water, a third switching structure connected to the third information source structure, and a third optical communication structure connected to the third switching structure, the third optical communication structure comprising a third light emitting structure and a third light receiving structure, the third light emitting structure being configured to emit a first deep ultraviolet light signal above water, and the first light receiving structure being configured to receive a second deep ultraviolet light signal from above water;

[0014] The third switching structure is connected to the second switching structure, and the first water environment information can be transmitted to the third switching structure via the second switching structure, and the third water environment information can be transmitted to the second switching structure via the third switching structure.

[0015] Optionally, the third optical communication structure further includes a third main control structure connected to the third optical emitting structure and the third optical receiving structure, the third optical emitting structure includes a third signal emission driving circuit electrically connected to the third switching structure, and a third LED array electrically connected to the third signal emission driving circuit, and the third optical receiving structure includes a third photodetector and a third signal receiving conditioning circuit electrically connected to the third photodetector;

[0016] The third light receiving structure is also used to convert the received second deep ultraviolet light signal into fourth water environment information; the third switching structure is connected to the third light receiving structure, and is used to transmit the fourth water environment information to the outside world through a wireless network.

[0017] Optionally, the third exchange structure is connected to the second exchange structure, and the fourth water environment information can be transmitted to the second exchange structure through the third exchange structure, and the second water environment information can be transmitted to the third exchange structure through the second exchange structure.

[0018] Optionally, the first emitting structure further includes a first emitting focusing lens, and the first blue light signal emitted by the first LED array is focused by the first emitting focusing lens and then transmitted to the outside world. The first receiving structure further includes a first receiving focusing lens, and the second blue light signal is focused by the first receiving focusing lens and then transmitted to the first photodetector.

[0019] The second emitting structure further includes a second emitting focusing lens, and the first white light signal emitted by the second LED array is focused by the second emitting focusing lens and then transmitted to the outside world. The second receiving structure further includes a second receiving focusing lens, and the second white light signal is focused by the second receiving focusing lens and then transmitted to the second photodetector.

[0020] The third emitting structure also includes a third emitting focusing lens, and the first deep ultraviolet light signal emitted by the third LED array is focused by the third emitting focusing lens and then transmitted to the outside world. The third receiving structure also includes a third receiving focusing lens, and the second deep ultraviolet light signal is focused by the third receiving focusing lens and then transmitted to the third photodetector.

[0021] Optionally, the first transmitting focusing lens, the first receiving focusing lens, the second transmitting focusing lens and the second receiving focusing lens are all glass focusing lenses;

[0022] The third transmitting focusing lens and the third receiving focusing lens are both quartz focusing lenses.

[0023] Optionally, the first switching structure, the second switching structure and the third switching structure are connected in the same Class C subnet.

[0024] Optionally, the first switching structure and the second switching structure are connected via a wired network or a wireless network.

[0025] The cross-medium optical communication device provided by the present invention is provided with a first communication unit and a second communication unit. The first communication unit is capable of performing blue light communication underwater, and the second communication unit is capable of performing white light communication above water. The first communication unit and the second communication unit are capable of exchanging information, so that information received or transmitted by the first communication unit can be transmitted through the second communication unit via white light communication above water, and information received or transmitted by the second communication unit can be transmitted through the first communication unit via blue light communication underwater. This implements cross-medium optical communication, enhances the functionality of the optical communication device, and expands the application field of the optical communication device. In addition, the present invention implements information exchange and real-time sharing between the first communication unit and the second communication unit, thereby further enhancing the performance of the optical communication device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Attachment Figure 1 This is a structural block diagram of a cross-medium optical communication device in a specific embodiment of the present disclosure;

[0027] Attachment Figure 2 is a network block diagram of multiple cross-medium optical communication devices in a specific embodiment of the present disclosure;

[0028] Attachment Figure 3 It is a structural diagram of the first communication unit in a specific embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] The specific implementation of the cross-medium optical communication device provided by the present invention is described in detail below with reference to the accompanying drawings.

[0030] This embodiment provides a cross-medium optical communication device, Figure 1 is a structural block diagram of a cross-medium optical communication device in a specific embodiment of the present disclosure, Figure 2 This is a network diagram of multiple cross-medium optical communication devices in a specific embodiment of the present disclosure, Figure 3 Schematic diagram of the structure of the first communication unit in the specific implementation of the present disclosure. Figure 1-Figure 3 As shown, the cross-medium optical communication device includes:

[0031] The first communication unit 10 includes a first information source structure 103 for collecting first underwater environmental information, a first switching structure 100 connected to the first information source structure 103, and a first optical communication structure connected to the first switching structure 100, wherein the first optical communication structure includes a first light emitting structure 101 and a first light receiving structure 102, wherein the first light emitting structure 101 is used to transmit a first blue light signal underwater, and the first light receiving structure 102 is used to receive a second blue light signal from underwater;

[0032] The second communication unit 20 includes a second information source structure 203 for collecting first water environment information, a second switching structure 200 connected to the second information source structure 203, and a second optical communication structure connected to the second switching structure 200. The second optical communication structure includes a second light emitting structure 201 and a second light receiving structure 202. The second light emitting structure 201 is used to transmit a first white light signal to the water, and the second light receiving structure 202 is used to receive a second white light signal from the water. The second switching structure 200 is connected to the first switching structure 100, and the first underwater environment information can be transmitted to the second switching structure 200 via the first switching structure 100, and the first water environment information can be transmitted to the first switching structure 100 via the second switching structure 200.

[0033] Specifically, the cross-medium optical communication device includes a first communication unit 10 for underwater optical communication and a second communication unit 20 for surface optical communication. The first signal source structure 103 can be an underwater information collection device such as an underwater camera or underwater sensor for underwater information collection, and the second signal source structure 203 can be a surface information or water source and shore information collection device such as a surface buoy or coastal sensor for surface information collection. The first optical communication structure can transmit the first blue light signal underwater, and the first blue light signal can be transmitted in an underwater channel. The first optical communication structure can also receive the second blue light signal from the underwater channel, that is, the first communication unit 10 can achieve full-duplex optical communication underwater. The second optical communication structure can transmit the first white light signal in an above-water environment such as the water surface or low altitude, and the first white light signal can be transmitted in a spatial channel (normal pressure channel or standard atmospheric pressure channel) such as an air channel. The second optical communication structure can also receive the second white light signal from a spatial channel such as an air channel, that is, the second communication unit 20 can achieve full-duplex optical communication above water. The cross-medium optical communication device provided in this specific embodiment can simultaneously collect information in different media and transmit it in different media (such as water medium and air medium) at the same time. For example, it can collect underwater information and transmit it in water, and it can also collect above-water information and transmit it in the air, which greatly enhances the function of the cross-medium optical communication device.

[0034] The first switching structure 100 in the first communication unit 10 is connected to the second switching structure 200 in the second communication unit 20, so that information transmission and information sharing between the first communication unit 10 and the second communication unit 20 can be achieved through the first switching structure 100 and the second switching structure 200, thereby achieving cross-medium transmission of information, enhancing the functionality of the optical communication device and expanding the application field of the optical communication device. For example, the first underwater environmental information collected by the first communication unit 10 through the first signal source structure 103 can be transmitted in the water medium in the underwater environment in the form of the first blue light signal, and the first environmental information collected by the first communication unit 10 through the first signal source structure 103 can also be transmitted in the air medium in the form of the first white light signal in the second communication unit 20. For another example, the first water environment information collected by the second communication unit 20 through the second signal source structure 203 can be transmitted in the air medium in the water environment in the form of the first white light signal, and the first water environment information collected by the second communication unit 20 through the second signal source structure 203 can also be transmitted in the water medium in the first communication unit 10 in the form of the first blue light signal.

[0035] Optionally, the first optical communication structure further includes a first main control structure 106 connecting the first light emitting structure 101 and the first light receiving structure 102, the first light emitting structure includes a first signal transmission driving circuit 1011 electrically connected to the first switching structure 100, and a first LED array 1012 electrically connected to the first signal transmission driving circuit 1011, the first light receiving structure 102 includes a first photodetector 1022, and a first signal receiving conditioning circuit 1021 electrically connected to the first photodetector 1022;

[0036] The second optical communication structure also includes a second main control structure connecting the second light emitting structure 201 and the second light receiving structure 202, the second light emitting structure 201 includes a second signal emission driving circuit electrically connected to the second switching structure 200, and a second LED array electrically connected to the second signal emission driving circuit, the second light receiving structure 202 includes a second photodetector, and a second signal receiving conditioning circuit electrically connected to the second photodetector.

[0037] Optionally, the first light receiving structure 102 is further configured to convert the received second blue light signal into second underwater environment information; the first switching structure 100 is further connected to the first light receiving structure 102, configured to transmit the second underwater environment information to the outside world via a wireless network;

[0038] The second light receiving structure 202 is also used to convert the received second white light signal into second water environment information; the second switching structure 200 is connected to the second light receiving structure 202, and is used to transmit the second water environment information to the outside world through a wireless network.

[0039] For example, if Figure 1-Figure 3As shown, the first signal source structure 103 in the first communication unit 10 collects the first underwater environment information and transmits it to the first switching structure 100. The first switching structure 100 transmits the first underwater environment information to the first main control structure 106. The first main control structure 106 drives the first LED array 1012 via the first signal transmission driving circuit 1011 to transmit the first blue light signal L2 carrying the first underwater environment information. After receiving the second blue light signal L1 carrying the second underwater environment information, the first photodetector 1022 in the first communication unit 10 converts the second blue light signal L1 into an underwater photocurrent signal and transmits it to the first signal receiving and conditioning circuit 1021. The first signal receiving and conditioning circuit 1021 amplifies, filters, and decodes the underwater photocurrent signal to obtain the second underwater environment information. The first main control structure 106 transmits the second underwater environment information to the first wireless communication structure 104, which then transmits it to the first interactive terminal 105. In one example, the first photodetector 1022 is an avalanche photodiode, and the first interactive terminal 105 can be a computer, a smart phone, etc.

[0040] For another example, the second information source structure 203 in the second communication unit 20 collects the first water environment information and transmits it to the second switching structure 200. The second switching structure 200 transmits the first water environment information to the second main control structure. The second main control structure drives the second LED array via the second signal transmission drive circuit to emit the first white light signal L4 loaded with the first water environment information. After the second photodetector in the second communication unit 20 receives the second white light signal L3 loaded with the second water environment information, it converts the second white light signal L3 into a first water photocurrent signal and transmits it to the second signal receiving and conditioning circuit. The second signal receiving and conditioning circuit amplifies, filters, decodes, and processes the first water photocurrent signal to obtain the second water environment information. The second main control structure transmits the second water environment information to the second wireless communication structure 204, which then transmits it to the second interactive terminal 205. In one example, the second interactive terminal 205 can be a computer, a smartphone, or the like. In other examples, the first white light signal transmitted by the second communication unit 20 may also be a white light signal loaded with the first underwater environment information.

[0041] Optionally, the cross-medium optical communication device further includes:

[0042] The third communication unit 30 includes a third information source structure 303 for collecting third environmental information on the water, a third switching structure 300 connected to the third information source structure 303, and a third optical communication structure connected to the third switching structure 300, wherein the third optical communication structure includes a third light emitting structure 301 and a third light receiving structure 302, wherein the third light emitting structure 301 is used to transmit a first deep ultraviolet light signal to the water, and the first light receiving structure 102 is used to receive a second deep ultraviolet light signal from the water;

[0043] The third exchange structure 300 is connected to the second exchange structure 200 , and the first water environment information can be transmitted to the third exchange structure 300 via the second exchange structure 200 , and the third water environment information can be transmitted to the second exchange structure 200 via the third exchange structure 300 .

[0044] Optionally, the third optical communication structure further includes a third main control structure connecting the third optical emitting structure 301 and the third optical receiving structure 302, the third optical emitting structure 301 includes a third signal emission driving circuit electrically connected to the third switching structure, and a third LED array electrically connected to the third signal emission driving circuit, the third optical receiving structure 302 includes a third photodetector, and a third signal receiving conditioning circuit electrically connected to the third photodetector;

[0045] The third light receiving structure 302 is also used to convert the received second deep ultraviolet light signal into fourth water environment information; the third switching structure 300 is connected to the third light receiving structure 302, and is used to transmit the fourth water environment information to the outside world through a wireless network.

[0046] Optionally, the third exchange structure 300 is connected to the second exchange structure 200, and the fourth water environment information can be transmitted to the second exchange structure 200 through the third exchange structure 300, and the second water environment information can be transmitted to the third exchange structure 300 through the second exchange structure 200.

[0047] Specifically, the third optical communication structure can transmit the first deep ultraviolet light signal in an aquatic environment, such as at high altitude. The first deep ultraviolet light signal can be transmitted in a low-voltage channel, such as a solar-blind channel. The third optical communication structure can also receive the second deep ultraviolet light signal from a low-voltage channel, such as a solar-blind channel. In other words, the third communication unit 30 can achieve high-altitude full-duplex optical communication. The third communication unit 30 operates in a solar-blind band, giving it excellent anti-electromagnetic interference and confidentiality performance.

[0048] For example, if Figure 1 and Figure 2As shown, two cross-medium optical communication devices (i.e., a first cross-medium optical communication device 41 and a second cross-medium optical communication device 42) are provided, and the two cross-medium optical communication devices have the same structure and both have the following features: Figure 1 The structure shown. The first communication unit 10 in the first cross-dielectric optical communication device 41 and the first communication unit 10 in the second cross-dielectric optical communication device 42 can perform full-duplex blue light communication via an underwater channel. The second communication unit 20 in the first cross-dielectric optical communication device 41 and the second communication unit 20 in the second cross-dielectric optical communication device 42 can perform full-duplex white light communication via a spatial channel such as an air channel. The third communication unit 30 in the first cross-dielectric optical communication device 41 and the third communication unit 30 in the second cross-dielectric optical communication device 42 can perform full-duplex deep ultraviolet light communication via a solar-blind channel.

[0049] The first interaction structure 100 within the first communication unit 10 in the first cross-dielectric optical communication device 41 and the second cross-dielectric optical communication device 42 can interact with the second interaction structure 200 within the second communication unit 20, and the second interaction structure 200 within the second communication unit 20 can interact with the third interaction structure 300 within the third communication unit 30, so that the underwater information collected by the first cross-dielectric optical communication device 41 can be transmitted to the second cross-dielectric optical communication device 42 through an underwater channel (for example, an air channel or a solar-blind channel), and the surface information collected by the second cross-dielectric optical communication device 42 can also be transmitted to the first cross-dielectric optical communication device 41 through the underwater channel, thereby improving the flexibility of the information transmission method and being able to improve the confidentiality of the information transmission.

[0050] In order to improve the accuracy of optical communication (including blue light communication, white light communication, and deep ultraviolet light communication) and increase the distance of optical communication, optionally, the first emitting structure 101 further includes a first emitting focusing lens, and the first blue light signal emitted by the first LED array 1012 is focused by the first emitting focusing lens and then transmitted to the outside world, and the first receiving structure 102 further includes a first receiving focusing lens, and the second blue light signal is focused by the first receiving focusing lens and then transmitted to the first photodetector;

[0051] The second emitting structure 201 further includes a second emitting focusing lens, and the first white light signal emitted by the second LED array is focused by the second emitting focusing lens and then transmitted to the outside world. The second receiving structure 202 further includes a second receiving focusing lens, and the second white light signal is focused by the second receiving focusing lens and then transmitted to the second photodetector.

[0052] The third emitting structure 301 also includes a third emitting focusing lens, and the first deep ultraviolet light signal emitted by the third LED array is focused by the third emitting focusing lens and then transmitted to the outside world. The third receiving structure 302 also includes a third receiving focusing lens, and the second deep ultraviolet light signal is focused by the third receiving focusing lens and then transmitted to the third photodetector.

[0053] Optionally, the first transmitting focusing lens, the first receiving focusing lens, the second transmitting focusing lens and the second receiving focusing lens are all glass focusing lenses to improve the optical communication distance and accuracy of the first communication unit 10 and the second communication unit 20;

[0054] The third emission focusing lens and the third receiving focusing lens are both quartz focusing lenses to improve the transmittance of deep ultraviolet light.

[0055] In some embodiments, the first receiving structure 102 further includes a first narrowband filter located on a side of the first receiving focusing lens away from the first photodetector, and the second blue light signal is filtered by the first narrowband filter before entering the first receiving focusing lens. The second receiving structure 202 further includes a second narrowband filter located on a side of the second receiving focusing lens away from the second photodetector, and the second white light signal is filtered by the second narrowband filter before entering the second receiving focusing lens. The third receiving structure 302 further includes a third narrowband filter located on a side of the third receiving focusing lens away from the third photodetector, and the second deep ultraviolet light signal is filtered by the third narrowband filter before entering the third receiving focusing lens.

[0056] Optionally, the first switch fabric 100, the second switch fabric 200, and the third switch fabric 300 are connected to the same Class C subnet. In one example, the first switch fabric 100, the second switch fabric 200, and the third switch fabric 300 all support the TCP transport protocol and can be located in the same Class C subnet by setting IPv4 addresses, thereby forming a cross-medium optical communication relay local area network.

[0057] Optionally, the first switching structure 100 and the second switching structure 200 are connected via a wired network or a wireless network.

[0058] The cross-medium optical communication device provided in this embodiment is provided with a first communication unit and a second communication unit. The first communication unit is capable of performing blue light communication underwater, and the second communication unit is capable of performing white light communication above water. The first communication unit and the second communication unit are capable of exchanging information, so that information received or transmitted by the first communication unit can be transmitted through the second communication unit via white light communication above water, and information received or transmitted by the second communication unit can be transmitted through the first communication unit via blue light communication underwater. This implements cross-medium optical communication, enhances the functionality of the optical communication device, and expands the application field of the optical communication device. In addition, this embodiment implements information exchange and real-time sharing between the first communication unit and the second communication unit, thereby further enhancing the performance of the optical communication device.

[0059] The above description is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A cross-medium optical communication device, characterized in that: include: A first communication unit includes a first information source structure for collecting first underwater environmental information, a first switching structure connected to the first information source structure, and a first optical communication structure connected to the first switching structure, wherein the first optical communication structure includes a first light transmitting structure and a first light receiving structure, wherein the first light transmitting structure is configured to transmit a first blue light signal underwater, and the first light receiving structure is configured to receive a second blue light signal from underwater; The second communication unit includes a second signal source structure for collecting first environmental information above water, a second switching structure connected to the second signal source structure, and a second optical communication structure connected to the second switching structure. The second optical communication structure includes a second light emitting structure and a second light receiving structure. The second light emitting structure is used to transmit a first white light signal to the surface of the water, and the second light receiving structure is used to receive a second white light signal from the surface of the water. The second switching structure is connected to the first switching structure, and the first underwater environmental information can be transmitted to the second switching structure via the first switching structure, and the first above water environmental information can be transmitted to the first switching structure via the second switching structure.

2. The cross-medium optical communication device according to claim 1, wherein: The first optical communication structure further includes a first main control structure connected to the first light emitting structure and the first light receiving structure, the first light emitting structure includes a first signal transmission driving circuit electrically connected to the first switching structure, and a first LED array electrically connected to the first signal transmission driving circuit, the first light receiving structure includes a first photodetector, and a first signal receiving conditioning circuit electrically connected to the first photodetector; The second optical communication structure also includes a second main control structure connecting the second light emitting structure and the second light receiving structure, the second light emitting structure includes a second signal emission driving circuit electrically connected to the second switching structure, and a second LED array electrically connected to the second signal emission driving circuit, the second light receiving structure includes a second photodetector, and a second signal receiving conditioning circuit electrically connected to the second photodetector.

3. The cross-medium optical communication device according to claim 2, wherein: The first light receiving structure is further configured to convert the received second blue light signal into second underwater environment information; the first switching structure is further connected to the first light receiving structure, configured to transmit the second underwater environment information to the outside world via a wireless network; The second light receiving structure is also used to convert the received second white light signal into second water environment information; the second switching structure is connected to the second light receiving structure, and is used to transmit the second water environment information to the outside world through a wireless network.

4. The cross-medium optical communication device according to claim 3, wherein: Also includes: a third communication unit, comprising a third information source structure for collecting third environmental information above water, a third switching structure connected to the third information source structure, and a third optical communication structure connected to the third switching structure, the third optical communication structure comprising a third light emitting structure and a third light receiving structure, the third light emitting structure being configured to emit a first deep ultraviolet light signal above water, and the first light receiving structure being configured to receive a second deep ultraviolet light signal from above water; The third switching structure is connected to the second switching structure, and the first water environment information can be transmitted to the third switching structure via the second switching structure, and the third water environment information can be transmitted to the second switching structure via the third switching structure.

5. The cross-medium optical communication device according to claim 4, wherein: The third optical communication structure further includes a third main control structure connected to the third optical emitting structure and the third optical receiving structure, the third optical emitting structure includes a third signal transmitting driving circuit electrically connected to the third switching structure, and a third LED array electrically connected to the third signal transmitting driving circuit, the third optical receiving structure includes a third photodetector, and a third signal receiving conditioning circuit electrically connected to the third photodetector; The third light receiving structure is also used to convert the received second deep ultraviolet light signal into fourth water environment information; the third switching structure is connected to the third light receiving structure, and is used to transmit the fourth water environment information to the outside world through a wireless network.

6. The cross-medium optical communication device according to claim 5, characterized in that The third switching structure is connected to the second switching structure, the fourth water environment information can be transmitted to the second switching structure through the third switching structure, and the second water environment information can be transmitted to the third switching structure through the second switching structure.

7. The cross-medium optical communication device according to claim 5, wherein: The first light emitting structure further includes a first emitting focusing lens, and the first blue light signal emitted by the first LED array is focused by the first emitting focusing lens and then transmitted to the outside. The first light receiving structure further includes a first receiving focusing lens, and the second blue light signal is focused by the first receiving focusing lens and then transmitted to the first photodetector. The second light emitting structure further includes a second emitting focusing lens, and the first white light signal emitted by the second LED array is focused by the second emitting focusing lens and then transmitted to the outside world. The second light receiving structure further includes a second receiving focusing lens, and the second white light signal is focused by the second receiving focusing lens and then transmitted to the second photodetector. The third light emitting structure also includes a third emitting focusing lens, and the first deep ultraviolet light signal emitted by the third LED array is focused by the third emitting focusing lens and then transmitted to the outside world. The third light receiving structure also includes a third receiving focusing lens, and the second deep ultraviolet light signal is focused by the third receiving focusing lens and then transmitted to the third photodetector.

8. The cross-medium optical communication device according to claim 7, wherein: The first transmitting focusing lens, the first receiving focusing lens, the second transmitting focusing lens and the second receiving focusing lens are all glass focusing lenses; The third transmitting focusing lens and the third receiving focusing lens are both quartz focusing lenses.

9. The cross-medium optical communication device according to claim 4, wherein: The first switching fabric, the second switching fabric, and the third switching fabric are connected in the same Class C subnet.

10. The cross-medium optical communication device according to claim 1, wherein: The first switching structure and the second switching structure are connected via a wired network or a wireless network.

Images