Marine display device

Abstract

The utility model discloses a marine display device, including: NMEA2000 bus, NMEA2000 data conversion module, NMEA0183 bus, NMEA0183 data conversion module, control module and display module, NMEA2000 bus transmits first video data signal, NMEA2000 data conversion module converts the first video data signal into second video data signal, NMEA0183 bus transmits the first video data signal, NMEA0183 data conversion module converts the second video data signal into second video data signal, control module and display module. The NMEA0183 data conversion module converts the first video data signal into a third video data signal; the control module receives the second video data signal and the third video data signal, and the signals are displayed through the display module.According to the technical scheme, the limitation of a traditional marine display device in a navigation environment is solved, through modular design, the flexibility of the display device is improved, information is allowed to be checked in real time at different ship positions, and the operation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to marine communication technical field especially relates to a marine display device. BACKGROUND

[0002] With the continuous progress of ship technology, marine electronic equipment is more and more widely used in ship navigation, and the operator needs to monitor various types of information of the ship and the surrounding environment in real time to ensure the safety and smoothness of navigation. Marine display as an important part of the ship information system is the most intuitive output platform of navigation data. Through the marine display, the operator can view the navigation data of the ship in real time, including position, speed, heading, AIS (automatic identification system), radar echo, weather information and other key information, which provides protection for ship navigation safety. However, the existing marine display has certain limitations and needs to be improved and upgraded.

[0003] At present, the marine display device generally adopts fixed installation mode and is usually installed in the cockpit and other specific positions, and the operator can only view real-time information in these areas. When the operator needs to observe the ship information on the deck or other ship positions, he often cannot obtain the data in real time, which affects the operation efficiency and safety of the ship. In addition, most marine displays adopt all-in-one machine design, and if the screen size needs to be adjusted, the equipment needs to be replaced as a whole, which not only increases the procurement and maintenance cost of the equipment, but also brings inconvenience to the operator.

[0004] In addition, the navigation environment of the ship is relatively complex, especially in adverse weather conditions such as heavy rain, heavy fog and strong wind, the traditional display device may not be able to stably receive video signals, resulting in that the equipment cannot normally display the key navigation data, and in serious cases, it may affect the safety of navigation.

[0005] Therefore, how to design a more flexible, adaptive and stable working marine display device in harsh environment has become an important technical subject in the upgrading and reconstruction of the current ship information system. EMBODIMENTS

[0006] The utility model embodiment provides a marine display device to solve the above technical problems.

[0007] The utility model discloses a first aspect provides a kind of marine display equipment based on NMEA2000 bus, it include: VHF radio equipment host computer and control terminal, the VHF radio equipment host computer includes the first transceiving sound module, the first digital-analog conversion module, the first control module and the first NMEA2000 transceiver connected in turn, the control terminal includes the second transceiving sound module, the second digital-analog conversion module, the second control module and the second NMEA2000 transceiver connected in turn, the first NMEA2000 transceiver and the second NMEA2000 transceiver are connected the NMEA2000 bus respectively.

[0008] Optionally, the first transceiving sound module includes a first microphone and a first speaker, and the first microphone and the first speaker are connected to the first digital-analog conversion module respectively.

[0009] Optionally, the radio equipment host computer further includes an antenna and a demodulation and modulation module, the antenna is connected to the demodulation and modulation module, and the demodulation and modulation module is connected to the first digital-analog conversion module.

[0010] Optionally, the second transceiving sound module includes a second microphone and a second speaker, and the second microphone and the second speaker are connected to the second digital-analog conversion module respectively.

[0011] Optionally, the first NMEA2000 transceiver includes a first filter module, a first data conversion module and a first isolation module connected in turn, the first filter module is connected to the NMEA2000 bus, and the first data conversion module is connected to the first control module.

[0012] Optionally, the first filter module includes a capacitor C21, a capacitor C22, a capacitor C23, a capacitor C24, a capacitor C25, a capacitor C26, a capacitor C27, a capacitor C28, a capacitor C29, a capacitor C30, a capacitor C41, a capacitor C42, a voltage stabilizing tube D24, a voltage stabilizing tube D25, a voltage stabilizing tube D26, a voltage stabilizing tube D27, a filter M21, a filter M22, a resistor R21 and a resistor R22.

[0013] The pin 5 of the NMEA2000 bus interface is connected to the first end of the resistor R21 and the cathode of the voltage stabilizing tube D24, the pin 4 of the NMEA2000 is connected to the first end of the resistor R22 and the cathode of the voltage stabilizing tube D26, the pin 3 of the NMEA2000 is connected to the first end of the capacitor C21, the first end of the capacitor C24 and the first end of the filter M21, the pin 2 of the NMEA2000 is connected to the first end of the capacitor C22, the first end of the capacitor C23, the second end of the capacitor C24 and the first end of the filter M22, the pin 1 of the NMEA2000 is connected to the second end of the capacitor C21, the second end of the capacitor C22, the cathode of the voltage stabilizing tube D25, the cathode of the voltage stabilizing tube D27, the second end of the capacitor C25, the second end of the capacitor C26, the second end of the capacitor C27, the second end of the capacitor C28 and the second end of the capacitor C29, the anode of the voltage stabilizing tube D24 is connected to the anode of the voltage stabilizing tube D25, the anode of the voltage stabilizing tube D26 is connected to the anode of the voltage stabilizing tube D27, the second end of the filter M21 is connected to the first end of the capacitor C25, the first end of the capacitor C27, the first end of the capacitor C29 and the first end of the capacitor C30, the second end of the filter M22 is connected to the first end of the capacitor C26, the first end of the capacitor C28 and the second end of the capacitor C30, the second end of the resistor R21 is connected to the first end of the capacitor C41, the resistor R22 is connected to the first end of the capacitor C42, and the second end of the capacitor C41 and the second end of the capacitor C42 are grounded.

[0014] Optionally, the first data conversion module comprises a mutual inductor L1, a chip U3, a chip U4, a chip U5, a voltage stabilizing tube D28, a capacitor C31, a capacitor C32, a capacitor C33, a capacitor C34, a capacitor C35, a capacitor C36, a capacitor C37, a capacitor C42, a resistor R23 and a resistor R24.

[0015] The third end of the mutual inductor L1 is connected to the first end of the resistor R23, the fourth end of the mutual inductor L1 is connected to the first end of the resistor R24, the second end of the resistor R23 is connected to the pin 7 of the chip U3, the second end of the resistor R24 is connected to the pin 6 of the chip U3, the pin 5 of the chip U3 is connected to the first end of the capacitor C37, the second end of the capacitor C37 is grounded, the cathode of the voltage stabilizing tube D28 is connected to the first end of the capacitor C31, the first end of the capacitor C32 and the pin VIN of the chip U4 respectively, the second end of the capacitor C31 and the second end of the capacitor C32 are grounded in common, the pin ADJ of the chip U4 is connected to the first end of the resistor R25 and the first end of the resistor R26 respectively, the second end of the resistor R26 is grounded, the second end of the resistor R25 is connected to the VOUT1 pin of the chip U4, the VOUT2 pin of the chip U4 is connected to the first end of the capacitor C42, the first end of the capacitor C33 and the VIN pin of the chip U5 respectively, the second end of the capacitor C42 and the second end of the capacitor C33 are grounded in common, the VOUT pin of the chip U5 is connected to the first end of the capacitor C34, the first end of the capacitor C35, the first end of the capacitor C36 and the pin 3 of the chip U3 respectively.

[0016] Optionally, the first isolation module comprises the optocoupler U6, the optocoupler U7, the resistor R25, the resistor R26, the resistor R27, the resistor R28, the capacitor C38, the capacitor C39, the capacitor C40, the filter M23 and the filter M24.

[0017] The pin 1 of the chip U3 is connected with the first end of the resistor R25 and the collector of the transistor of the optoelectronic component U6 respectively, the emitter of the transistor of the optoelectronic component U6 is grounded, the power supply end of the optoelectronic component U6, the second end of the resistor R25 and the first end of the capacitor C38 are connected in common and receive the second voltage, the second end of the capacitor C38 is grounded, the anode of the diode of the optoelectronic component U6 is connected with the first end of the resistor R26, the second end of the resistor R26 is connected with the first end of the capacitor C39 and the first end of the filter M24 respectively, the second end of the capacitor C39 is grounded, the second end of the filter M24 receives the first voltage, the cathode of the diode of the optoelectronic component U6 is the signal input end, the pin 4 of the chip U3 is connected with the cathode of the diode of the optoelectronic component U7, the anode of the diode of the optoelectronic component U7 is connected with the first end of the resistor R27, the second end of the resistor R27 receives the second voltage, the power supply end of the optoelectronic component U7 is connected with the first end of the resistor R28, the first end of the capacitor C40 and the first end of the filter M23 respectively, the second end of the filter M23 receives the first voltage, the second end of the capacitor C40 is grounded, the collector of the transistor of the optoelectronic component U7 and the second end of the resistor R28 are connected in common as the signal output end, the emitter of the transistor of the optoelectronic component U7 is grounded.

[0018] Optionally, the NMEA0183 data conversion module comprises a second filter module, a second data conversion module and a second isolation module connected in sequence, the second filter module is connected with the NMEA0183 bus, and the second data conversion module is connected with the control module.

[0019] Optionally, the second filter module comprises a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, a resistor RP1, a resistor RP2, a filter M1, a filter M2, a filter M3 and a filter M4.

[0020] The NMWA0813 bus interface 1 is connected to the first end of the capacitor C1, the first end of the resistor RP1, the first end of the filter M1 and the first end of the capacitor C1 respectively, the NMWA0813 bus interface 2 is connected to the first end of the capacitor C2, the second end of the resistor RP1 and the first end of the filter M2 respectively, the NMWA0813 bus interface 3 is connected to the first end of the capacitor C3 and the first end of the filter M3 respectively, the NMWA0813 bus interface 4 is connected to the first end of the capacitor C4 and the first end of the filter M4 respectively, the second end of the filter M1 is connected to the first end of the capacitor C5, the second end of the filter M2 is connected to the first end of the capacitor C6, the second end of the filter M3 is connected to the first end of the capacitor C7 and the first end of the resistor RP2 respectively, the second end of the filter M4 is connected to the first end of the capacitor C8 and the second end of the resistor RP2 respectively, the second end of the capacitor C1, the second end of the capacitor C2, the second end of the capacitor C3, the second end of the capacitor C4 are connected to ground in common, and the second end of the capacitor C5, the second end of the capacitor C6, the second end of the capacitor C7 and the second end of the capacitor C8 are connected to ground in common.

[0021] Optionally, the second data conversion module comprises resistors R1, R2, R3, R4, R5, R6, R7, R8, R10, diodes D1, D2, D3, D4, a triode Q1, a chip U2, capacitors C11, C12 and C13; the second isolation module comprises an optical coupling device U1, a resistor R9, capacitors C9 and C10.

[0022] The second end of the filter M1 is connected to the cathode of the diode D1, the anode of the diode D3, the anode of the diode of the optocoupler U1 respectively, the second end of the filter M2 is connected to the first end of the resistor R1, the second end of the filter M3 is connected to the first end of the resistor R4, the second end of the filter M4 is connected to the first end of the resistor R5, the anode of the diode D1 is connected to the cathode of the diode D2, the anode of the diode D2 is connected to the cathode of the diode D4, the anode of the diode D4 is connected to the first end of the resistor R3, the first end of the resistor R7 and the emitter of the triode Q1 respectively, the second end of the resistor R3 is connected to the first end of the resistor R2, the second end of the resistor R2 is connected to the second end of the resistor R1, the collector of the triode Q1 is connected to the cathode of the diode D3, the base of the triode Q1 is connected to the second end of the resistor R7 and the cathode of the diode of the optocoupler U1 respectively, the collector of the triode of the optocoupler U1, the first end of the resistor R9 and the first end of the capacitor C10 are connected together to form a signal output end, the second end of the resistor R9, the power supply end of the optocoupler U1 and the first end of the capacitor C9 are connected together to receive a first voltage, the emitter of the triode of the optocoupler U1 is grounded, the second end of the capacitor C10 is grounded, the second end of the capacitor C9 is grounded, the second end of the resistor R4 is connected to the first end of the resistor R6 and the pin B of the chip U2 respectively, the second end of the resistor R5 is connected to the second end of the resistor R6 and the pin A of the chip U2 respectively, the pin VCC of the chip U2 is connected to the first end of the resistor R8, the second end of the resistor R8 is connected to the first end of the resistor R10 and the first end of the capacitor C12 respectively, the second end of the capacitor C12 is grounded, the pin RO of the chip U2 is connected to the first end of the capacitor C11, the second end of the capacitor C11 is grounded, the pin the second end of the resistor R10 and the pin DE of the chip U2 respectively, the pin DI of the chip U2 and the first end of the capacitor C13 are connected together to form a signal input end, the second end of the capacitor C13 is grounded.

[0023] The technical effect of the embodiment of the utility model is that: the technical scheme introduces the data transmission and conversion module of NMEA2000 bus and the data transmission and conversion module of NMEA0183 bus, solves the limitation of the traditional marine display device in the navigation environment, improves the flexibility of the display device through the modular design, allows real-time viewing of information in different ship positions, improves the operation efficiency, enhances the anti-interference ability of the system, ensures stable reception of video signals in bad weather conditions, and ensures navigation safety; at the same time, the modularization and compatibility design of the equipment reduce the procurement and maintenance cost, facilitate the upgrading and customization of the system; the technical scheme improves the reliability, maintainability and economy of the marine display device as a whole. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the drawings needed in the description of the embodiment of the utility model will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0025] Figure 1 is a structural schematic diagram of a marine display device provided by the embodiment one of the utility model;

[0026] Figure 2 is a structural schematic diagram of a NMEA2000 data conversion module in a marine display device provided by the embodiment one of the utility model;

[0027] Figure 3 is a structural schematic diagram of a NMEA0183 data conversion module in a marine display device provided by the embodiment one of the utility model;

[0028] Figure 4 is a circuit diagram of a NMEA0183 data conversion module in a marine display device provided by the embodiment one of the utility model;

[0029] Figure 5 is a circuit diagram of a NMEA2000 data conversion module in a marine display device provided by the embodiment one of the utility model;

[0030] In the figure: 101, NMEA2000 bus; 102, NMEA2000 data conversion module; 103, NMEA0183 bus; 104, NMEA0183 data conversion module; 105, control module; 106, display module; 201, first filter module; 202, first data conversion module; 202, first isolation module; 301, second filter module; 302, second data conversion module; 302, second isolation module. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0032] It should be understood that the present application can be implemented in different forms and should not be interpreted as being limited to the embodiments presented herein. On the contrary, these embodiments are provided so that the disclosure will be thorough and complete and will fully convey the scope of the present application to those skilled in the art. In the drawings, the sizes and relative sizes of layers and regions can be exaggerated for clarity. The same reference numbers represent the same elements throughout the drawings.

[0033] It should be understood that when an element or layer is referred to as being "on", "adjacent", "connected to", or "coupled to" another element or layer, it can be directly on, adjacent, connected or coupled to the other element or layer, or an intervening element or layer can be present. In contrast, when an element is referred to as being "directly on", "directly adjacent", "directly connected to", or "directly coupled to" another element or layer, then there are no intervening elements or layers present. It will be understood that, although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present application.

[0034] In order to thoroughly understand the present application, detailed structures and steps will be presented in the following description in order to explain the technical solutions presented by the present application. The preferred embodiments of the present application are described in detail as follows, however, in addition to these detailed descriptions, the present application can have other implementation manners.

[0035] Embodiment One

[0036] The present embodiment one provides a marine display device, as shown in the accompanying drawings, comprising: Figure 1

[0037] a NMEA2000 bus 101 for transmitting a first video data signal;

[0038] ​a NMEA2000 data conversion module 102, an input end of which is connected to the NMEA2000 bus 101, for converting the first video data signal into a second video data signal;

[0039] a NMEA0183 bus 103 for transmitting the first video data signal;

[0040] a NMEA0183 data conversion module 104, an input end of which is connected to the NMEA0183 bus 103, for converting the first video data signal into a third video data signal;

[0041] a control module 105 and a display module 106, which are respectively connected to an output end of the NMEA2000 data conversion module 102 and an output end of the NMEA0183 data conversion module 104, receive the second video data signal and the third video data signal, and display the signals through the display module 106.

[0042] Wherein, the NMEA2000 bus 101 is used for transmitting the first video signal data, and the NMEA2000 is a kind of ship electronic equipment communication protocol, supports high-bandwidth data transmission, and is suitable for transmitting navigation, radar, AIS and various data. Various sensors or other ship equipment will transmit the data collected by NMEA2000 protocol to the link. The first video data signal is transmitted to the connected NMEA2000 data conversion module 102. The NMEA2000 data conversion module 102 converts the first video data signal from the NMEA2000 bus 101 interface into the second video data signal that the control module 105 can process and identify, and performs protocol conversion and data format configuration. The NMEA2000 data conversion module 102 receives the first video signal from the NMEA2000 indoor, parses the first video signal data, identifies the data content, such as ship position, speed, heading and other information, re-encapsulates the parsed data into the second video data signal in a format that the display module 106 can identify, and outputs the second video data signal to the control module 105. The NMEA0183 bus 103 is used for transmitting the first video signal data, and the NMEA0183 is a kind of ship equipment communication protocol, with lower bandwidth, and is usually used for transmitting one-way, low-speed navigation data. The NMEA0183 bus 103 receives the first data video signal from the connected sensor or equipment, and transmits the signal to the NMEA0183 data conversion module 104. The NMEA0183 data conversion module 104 converts the first video data signal from the NMEA0183 bus 103 interface into the third video data signal of the control module 105 and the display module 106, and performs protocol conversion and data format standardization. The NMEA0183 data conversion module 104 receives the first video signal from the NMEA0183 indoor, parses the data content and performs format conversion, ensures data compatibility, encapsulates the converted data into the third video data signal, and outputs the third video data signal to the control module 105. The control module 105 receives the second video data signal and the third video data signal from the NMEA2000 data conversion module 102 and the NMEA0183 data conversion module 104 respectively, parses and integrates the video data signal, and is used for unified management and transmission to the display module 106 for display. The control module 105 receives the second video data signal and the third video data signal, sends the arranged video signal to the display module 106 for visual output. The display module 106 displays the integrated video data signal, and provides real-time ship state, navigation data and environmental information for the operator. It has various display modes (such as full-screen and split-screen display), and supports flexible configuration to adapt to different work requirements. The display module 106 receives the arranged video data signal from the control module 105.The data signal is converted into a graphical interface to display the ship position, speed, heading, radar, and weather information, and provides interactive functions to allow the operator to switch the display content or adjust the display parameters.

[0043] The technical effect of the technical solution provided by the embodiment one is that: by introducing the data transmission and conversion module of the NMEA2000 bus and the data transmission and conversion module of the NMEA0183 bus, the technical solution solves the limitations of the traditional marine display device in the navigation environment, improves the flexibility of the display device through modular design, allows real-time viewing of information at different ship positions, improves the operation efficiency, enhances the anti-interference ability of the system, ensures stable reception of video signals in bad weather conditions, and ensures navigation safety; at the same time, the modularization and compatibility design of the device reduce the procurement and maintenance costs, facilitate the upgrading and customization of the system; the technical solution improves the reliability, maintainability and economy of the marine display device as a whole.

[0044] As an implementation manner, the marine display device further comprises a TYPE-C interface, and the control module 105 is connected with the display module 106 through the TYPE-C interface.

[0045] The TYPE-C interface is a general connection interface and is widely used in various electronic devices. The TYPE-C interface is used to connect the control module 105 and the display module 106 to provide a high-speed and stable signal transmission channel. The control module 105 receives, analyzes and integrates the data signals from the NMEA2000 data conversion module 102 and the NMEA0183 data conversion module 104. After processing these data signals, the control module 105 transmits them to the display module 106 through the TYPE-C interface. The display module 106 converts the received signals into a graphical interface and displays them to the operator, showing the navigation information and weather data of the ship.

[0046] As an implementation manner, the marine display device further comprises a WIFI module or a Bluetooth module, and the control module 105 is connected with the display module 106 through the WIFI module or the Bluetooth module.

[0047] The WiFi module allows the control module 105 and the display module 106 to be connected through a wireless network, realizing high-speed transmission of data. The Bluetooth module provides short-range wireless communication, suitable for scenarios with low power consumption and high stability requirements. The control module 105 receives video data signals from the NMEA2000 data conversion module 102 and the NMEA0183 data conversion module 104. The control module 105 transmits the parsed data signals to the display module 106 through the WiFi or Bluetooth module. The display module 106 receives the wirelessly transmitted data and converts it into a graphical interface, displaying the ship's navigation data, weather information, and surrounding environment status in real time. The operator can freely move within the wireless coverage range and view the ship information through the display module 106.

[0048] As an embodiment, as shown in Figure 2 The NMEA2000 data conversion module 102 includes a first filter module 201, a first data conversion module 202, and a first isolation module 202 connected in sequence, the first filter module 201 is connected to the NMEA2000 bus 101, and the first data conversion module 202 is connected to the control module 105.

[0049] The first filtering module 201 is used to preliminarily filter and suppress noise of the signal from the NMEA2000 bus 101, remove electromagnetic interference (EMI) and high-frequency noise. Ensure that the signal entering the data conversion module is pure to improve the accuracy and reliability of signal analysis. The first filtering module 201 receives the first video data signal from the NMEA2000 bus 101. Remove high-frequency noise and transient spikes in the signal through a filter (such as a low-pass filter, common-mode filter, etc.). Output the filtered signal to the first data conversion module 202 to ensure the stability and performance of the subsequent processing module. The first data conversion module 202 performs data analysis and protocol conversion on the signal from the first filtering module 201 according to the requirements of the NMEA2000 protocol. Convert the analyzed data into a format (such as a standard digital signal) that the control module 105 can recognize. The first data conversion module 202 receives the clean video data signal from the first filtering module 201. According to the NMEA2000 protocol, the data is analyzed, and key information (such as ship position, speed, heading, AIS data, etc.) is extracted. The analyzed data is re-encoded into a data format (such as CAN data converted to UART or SPI format) that the display device or control module 105 can recognize. The converted data is sent to the first isolation module 202 to ensure data integrity. The first isolation module 202 realizes electrical isolation of the signal, protects the control module 105 and subsequent circuits from current surges, noise or other electrical interference, improves the reliability and anti-interference ability of the system, especially in complex ship electronic system environment. The first isolation module 202 receives the converted data signal from the first data conversion module 202 and uses isolation devices (such as optocouplers, transformer isolators, etc.) to realize electrical isolation between input and output. The isolated signal is output to the control module 105 to ensure data stability and security.

[0050] The technical effect of the embodiment is that by introducing the first filtering module, the first data conversion module and the first isolation module, the processing capability and system reliability of NMEA2000 bus data in marine electronic equipment are effectively improved. The first filtering module provides preliminary noise suppression and electromagnetic interference (EMI) removal, ensures signal quality, and reduces the impact of high-frequency noise on subsequent processing modules. The first data conversion module analyzes and protocol converts the filtered signal, converts the original data into a format suitable for control module processing, thereby improving the accuracy and compatibility of signal analysis. The first isolation module realizes electrical isolation of the signal, protects the control module from current surges, noise and electrical interference, greatly improves the anti-interference ability and reliability of the system, especially in complex electromagnetic environment of ships, ensures the stability and security of data transmission. This scheme optimizes the signal transmission link, enhances the stability, reliability and anti-interference ability of the system, and meets the demand of ship electronic system for efficient and stable data processing.

[0051] As an implementation, as shown in Figure 3 The NMEA0183 data conversion module 104 includes a second filter module 301, a second data conversion module 302, and a second isolation module 302 connected in sequence, the second filter module 301 is connected to the NMEA0183 bus 103, and the second data conversion module 302 is connected to the control module 105.

[0052] The second filter module 301 performs preliminary filtering on the signal from the NMEA0183 bus 103, removes electromagnetic interference (EMI) and noise, solves the problem that the NMEA0183 bus 103 is susceptible to interference due to low bandwidth and one-way transmission, improves signal quality, and ensures the accuracy of subsequent data processing. The second filter module 301 receives the first video data signal from the NMEA0183 bus 103, uses a filter (such as a low-pass filter, common-mode filter, or RC filter circuit) to remove high-frequency noise and transient spikes in the signal, and outputs the filtered signal to the second data conversion module 302 to provide stable signal input for the subsequent module. The second data conversion module 302 performs protocol analysis and format conversion on the signal from the second filter module 301, meets the requirements of the NMEA0183 protocol, extracts key information (such as ship position, speed, heading, AIS data, etc.), and re-encodes it into a data format that the control module 105 can recognize. The second data conversion module 302 receives the clean video data signal from the second filter module 301, analyzes the signal according to the NMEA0183 protocol, and extracts key information. The analyzed data is re-encoded into a format (such as UART or TTL signal) that the control module 105 can recognize, and the converted data is sent to the second isolation module 302 to ensure the integrity of the data and the reliability of subsequent processing. The second isolation module 302 realizes the electrical isolation of the signal, avoids the influence of the control module 105 by current impact, noise or other electrical interference, improves the reliability and anti-interference ability of the system, especially in the complex electronic system environment of the ship. The second isolation module 302 receives the converted data signal from the second data conversion module 302, uses isolation devices (such as optical coupling, transformer isolator, or digital isolator) to realize the electrical isolation of input and output, and outputs the isolated signal to the control module 105 to ensure the safety and stability of signal transmission.

[0053] The technical effect of the embodiment is that by introducing the second filtering module, the second data conversion module and the second isolation module, the signal interference problem caused by low bandwidth and one-way transmission of the NMEA0183 bus is effectively solved, and the quality and reliability of data processing are improved. The second filtering module filters out high-frequency noise and transient spikes, optimizes the signal quality, and ensures the accuracy and stability of subsequent processing. The second data conversion module performs protocol analysis and format conversion on the signal, re-encodes the NMEA0183 protocol data into a standard format (such as UART or TTL signal) recognizable by the control module, realizes the compatibility and standardization of the signal. The second isolation module avoids the influence of current impact and noise interference on the system, improves the anti-interference ability and safety of the system, especially in the complex ship electronic system environment. The overall scheme optimizes the processing link of NMEA0183 data, significantly improves the reliability, stability and safety of the signal, and provides an important guarantee for the efficient operation of the ship information system.

[0054] As an example, as Figure 4As shown, the connection relationship of each device in the NMEA0183 data conversion module 104 is as follows: the NMEA0813 bus interface 1 is connected with the first end of the resistor RP1, the first end of the filter M1 and the first end of the capacitor C1 respectively, the NMEA0813 bus interface 2 is connected with the first end of the capacitor C2, the second end of the resistor RP1 and the first end of the filter M2 respectively, the NMEA0813 bus interface 3 is connected with the first end of the capacitor C3 and the first end of the filter M3 respectively, the NMEA0813 bus interface 4 is connected with the first end of the capacitor C4 and the first end of the filter M4 respectively, the second end of the filter M1 is connected with the first end of the capacitor C5, the cathode of the diode D1, the anode of the diode D3, the anode of the diode of the optocoupler device U1 respectively, the second end of the filter M2 is connected with the first end of the capacitor C6 and the first end of the resistor R1 respectively, the second end of the filter M3 is connected with the first end of the capacitor C7, the first end of the resistor R4 and the first end of the resistor RP2 respectively, the second end of the filter M4 is connected with the first end of the capacitor C8, the first end of the resistor R5 and the second end of the resistor RP2 respectively, the second end of the capacitor C1, the second end of the capacitor C2, the second end of the capacitor C3, the second end of the capacitor C4 are connected to ground, the second end of the capacitor C5, the second end of the capacitor C6, the second end of the capacitor C7, the second end of the capacitor C8 are connected to ground, the anode of the diode D1 is connected with the cathode of the diode D2, the anode of the diode D2 is connected with the cathode of the diode D4, the anode of the diode D4 is connected with the first end of the resistor R3, the first end of the resistor R7 and the emitter of the triode Q1 respectively, the second end of the resistor R3 is connected with the first end of the resistor R2, the second end of the resistor R2 is connected with the second end of the resistor R1, the collector of the triode Q1 is connected with the cathode of the diode D3, the base of the triode Q1 is connected with the second end of the resistor R7 and the cathode of the diode of the optocoupler device U1 respectively, the collector of the triode of the optocoupler device U1, the first end of the resistor R9 and the first end of the capacitor C10 are connected together to form a signal output end, the second end of the resistor R9, the power supply end of the optocoupler device U1 and the first end of the capacitor C9 are connected together to receive a first voltage, the emitter of the triode of the optocoupler device U1 is grounded, the second end of the capacitor C10 is grounded, the second end of the capacitor C9 is grounded, the second end of the resistor R4 is connected with the first end of the resistor R6 and the pin B of the chip U2 respectively, the second end of the resistor R5 is connected with the second end of the resistor R6 and the pin A of the chip U2 respectively, the pin VCC of the chip U2 is connected with the first end of the resistor R8, the second end of the resistor R8 is connected with the first end of the resistor R10 and the first end of the capacitor C12 respectively, the second end of the capacitor C12 is grounded, the pin RO of the chip U2 is connected with the first end of the capacitor C11, the second end of the capacitor C11 is grounded, the pin DE of the chip U2 is connected with the second end of the resistor R10 and the pin DI of the chip U2 respectively, the pin DI of the chip U2 and the first end of the capacitor C13 are connected together to form a signal input end, the second end of the capacitor C13 is grounded.

[0055] Wherein, the capacitor C1, the capacitor C2, the capacitor C3, the capacitor C4, the capacitor C5, the capacitor C6, the capacitor C7, the capacitor C8, the resistor RP1, the resistor RP2, the filter M1, the filter M2, the filter M3, the filter M4 constitute the second filter module, filter the signal;Resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, diode D1, diode D2, diode D3, diode D4, triode Q1, chip U2 form the second data conversion module, convert the data received or sent;Optocoupler U1, resistance R9, capacitor C9, capacitor C10 form the second isolation module.

[0056] As an example, such as Figure 5As shown, the connection relationship of each device in the NMEA2000 data conversion module 102 is as follows: the pin 5 of NMEA2000 is connected to the first end of the resistor R21 and the cathode of the voltage stabilizing tube D24, the pin 4 of NMEA2000 is connected to the first end of the resistor R22 and the cathode of the voltage stabilizing tube D26, the pin 3 of NMEA2000 is connected to the first end of the capacitor C21, the first end of the capacitor C24 and the first end of the filter M21, the pin 2 of NMEA2000 is connected to the first end of the capacitor C22, the first end of the capacitor C23, the second end of the capacitor C24 and the first end of the filter M22, the pin 1 of NMEA2000 is connected to the second end of the capacitor C21, the second end of the capacitor C22, the cathode of the voltage stabilizing tube D25, the cathode of the voltage stabilizing tube D27, the second end of the capacitor C25, the second end of the capacitor C26, the second end of the capacitor C27, the second end of the capacitor C28, the second end of the capacitor C29, the anode of the voltage stabilizing tube D24 is connected to the anode of the voltage stabilizing tube D25, the anode of the voltage stabilizing tube D26 is connected to the anode of the voltage stabilizing tube D27, the second end of the filter M21 is connected to the first end of the capacitor C25, the first end of the capacitor C27, the first end of the capacitor C29 and the first end of the capacitor C30, the second end of the filter M22 is connected to the first end of the capacitor C26, the first end of the capacitor C28, the second end of the capacitor C30 and the anode of the voltage stabilizing tube D28, the second end of the resistor R21 is connected to the first end of the capacitor C41 and the second end of the mutual inductor L1, the resistor R22 is connected to the first end of the capacitor C42 and the first end of the mutual inductor L1, the second end of the capacitor C41 and the second end of the capacitor C42 are connected to ground, the third end of the mutual inductor L1 is connected to the first end of the resistor R23, the fourth end of the mutual inductor L1 is connected to the first end of the resistor R24, the second end of the resistor R23 is connected to the pin 7 of the chip U3, the second end of the resistor R24 is connected to the pin 6 of the chip U3, the pin 5 of the chip U3 is connected to the first end of the capacitor C37, the second end of the capacitor C37 is connected to ground, the cathode of the voltage stabilizing tube D28 is connected to the first end of the capacitor C31, the first end of the capacitor C32 and the pin VIN of the chip U4, the second end of the capacitor C31 and the second end of the capacitor C32 are connected to ground, the pin ADJ of the chip U4 is connected to the first end of the resistor R25 and the first end of the resistor R26, the second end of the resistor R26 is connected to ground, the second end of the resistor R25 is connected to the VOUT1 pin of the chip U4, the VOUT2 pin of the chip U4 is connected to the first end of the capacitor C42, the first end of the capacitor C33 and the VIN pin of the chip U5, the second end of the capacitor C42 and the second end of the capacitor C33 are connected to ground, the VOUT pin of the chip U5 is connected to the first end of the capacitor C34, the first end of the capacitor C35, the first end of the capacitor C36 and the pin 3 of the chip U3, the pin 1 of the chip U3 is connected to the first end of the resistor R25 and the collector of the triode of the optical coupling device U6, the emitter of the triode of the optical coupling device U6 is connected to ground,The second end of the resistor R25 and the first end of the capacitor C38 are connected to the power supply end of the optocoupler U6 to receive the second voltage, the first end of the resistor R26 is connected to the anode of the diode of the optocoupler U6, the second end of the resistor R26 is connected to the first end of the capacitor C39 and the first end of the filter M24 respectively, the second end of the filter M24 receives the first voltage, the cathode of the diode of the optocoupler U6 is the signal input end, the pin 4 of the chip U3 is connected to the cathode of the diode of the optocoupler U7, the first end of the resistor R27 is connected to the anode of the diode of the optocoupler U7, the second end of the resistor R27 receives the second voltage, the first end of the resistor R28, the first end of the capacitor C40 and the first end of the filter M23 are connected to the power supply end of the optocoupler U7, the second end of the filter M23 receives the first voltage, the second end of the capacitor C40 is grounded, the collector of the triode of the optocoupler U7 and the second end of the resistor R28 are connected to the signal output end, and the emitter of the triode of the optocoupler U7 is grounded.

[0057] The capacitor C21, the capacitor C22, the capacitor C23, the capacitor C24, the capacitor C25, the capacitor C26, the capacitor C27, the capacitor C28, the capacitor C29, the capacitor C30, the voltage stabilizing tube D24, the voltage stabilizing tube D25, the voltage stabilizing tube D26, the voltage stabilizing tube D27, the filter M21 and the filter M22 form a first filter module, the first data conversion module includes the mutual inductor L1, the chip U3, the chip U4, the chip U5, the voltage stabilizing tube D28, the capacitor C31, the capacitor C32, the capacitor C33, the capacitor C34, the capacitor C35, the capacitor C36, the capacitor C37, the capacitor C42, the resistor R23 and the resistor R24, and the data is converted, and the first isolation module includes the optocoupler U6, the optocoupler U7, the resistor R25, the resistor R26, the resistor R27, the resistor R28, the capacitor C38, the capacitor C39, the capacitor C40, the filter M23 and the filter M24, and the input and output data are isolated.

[0058] The working process of the technical solution is as follows: the device is connected to the internal communication interface of the ship to obtain key data information such as the position, speed, heading, AIS and weather of the ship. The obtained data is converted and output to the MCU, processed by the MCU and transmitted to the data transmission module, which is divided into a wired interface Type-C and a wireless interface (WIFI / Bluetooth), and can be connected to a mobile phone, a tablet computer or other handheld terminals through a wired or wireless mode, so that the display content information can be viewed.

[0059] The above examples are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features therein can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A marine display device, characterized by, The marine display device comprises: an NMEA2000 bus for transmitting a first video data signal; an NMEA2000 data conversion module, an input end of which is connected to the NMEA2000 bus, for converting the first video data signal into a second video data signal; an NMEA0183 bus for transmitting a first video data signal; an NMEA0183 data conversion module, an input end of which is connected to the NMEA0183 bus, for converting the first video data signal into a third video data signal; a control module and a display module, which are respectively connected to an output end of the NMEA2000 data conversion module and an output end of the NMEA0183 data conversion module, receive the second video data signal and the third video data signal, and display the signals through the display module.

2. The marine display device of claim 1, wherein, The marine display device further comprises a TYPE-C interface, and the control module is connected to the display module through the TYPE-C interface.

3. The marine display device of claim 1, wherein, The marine display device further comprises a WIFI module or a Bluetooth module, and the control module is connected to the display module through the WIFI module or the Bluetooth module.

4. The marine display device of claim 1, wherein, The NMEA2000 data conversion module comprises a first filter module, a first data conversion module and a first isolation module connected in sequence, the first filter module is connected to the NMEA2000 bus, and the first data conversion module is connected to the control module.

5. The marine display device of claim 4, wherein, The first filter module comprises a capacitor C21, a capacitor C22, a capacitor C23, a capacitor C24, a capacitor C25, a capacitor C26, a capacitor C27, a capacitor C28, a capacitor C29, a capacitor C30, a capacitor C41, a capacitor C42, a voltage stabilizing tube D24, a voltage stabilizing tube D25, a voltage stabilizing tube D26, a voltage stabilizing tube D27, a filter M21, a filter M22, a resistor R21 and a resistor R22. The pin 5 of the NMEA2000 bus interface is connected with the first end of the resistor R21 and the cathode of the voltage stabilizing tube D24 respectively, the pin 4 of the NMEA2000 is connected with the first end of the resistor R22 and the cathode of the voltage stabilizing tube D26 respectively, the pin 3 of the NMEA2000 is connected with the first end of the capacitor C21, the first end of the capacitor C24 and the first end of the filter M21 respectively, the pin 2 of the NMEA2000 is connected with the first end of the capacitor C22, the first end of the capacitor C23, the second end of the capacitor C24 and the first end of the filter M22 respectively, the pin 1 of the NMEA2000 is connected with the second end of the capacitor C21, the second end of the capacitor C22, the cathode of the voltage stabilizing tube D25, the cathode of the voltage stabilizing tube D27, the second end of the capacitor C25, the second end of the capacitor C26, the second end of the capacitor C27, the second end of the capacitor C28 and the second end of the capacitor C29 respectively, the anode of the voltage stabilizing tube D24 is connected with the anode of the voltage stabilizing tube D25, the anode of the voltage stabilizing tube D26 is connected with the anode of the voltage stabilizing tube D27, the second end of the filter M21 is connected with the first end of the capacitor C25, the first end of the capacitor C27, the first end of the capacitor C29 and the first end of the capacitor C30 respectively, the second end of the filter M22 is connected with the first end of the capacitor C26, the first end of the capacitor C28 and the second end of the capacitor C30 respectively, the second end of the resistor R21 is connected with the first end of the capacitor C41, the resistor R22 is connected with the first end of the capacitor C42, and the second end of the capacitor C41 and the second end of the capacitor C42 are connected with the ground.

6. The marine display device of claim 4, wherein, The first data conversion module comprises the mutual inductor L1, the chip U3, the chip U4, the chip U5, the voltage stabilizing tube D28, the capacitor C31, the capacitor C32, the capacitor C33, the capacitor C34, the capacitor C35, the capacitor C36, the capacitor C37, the capacitor C42, the resistor R23 and the resistor R24. The third end of the mutual inductor L1 is connected to the first end of the resistor R23, the fourth end of the mutual inductor L1 is connected to the first end of the resistor R24, the second end of the resistor R23 is connected to the pin 7 of the chip U3, the second end of the resistor R24 is connected to the pin 6 of the chip U3, the pin 5 of the chip U3 is connected to the first end of the capacitor C37, the second end of the capacitor C37 is grounded, the cathode of the voltage stabilizing tube D28 is connected to the first end of the capacitor C31, the first end of the capacitor C32 and the pin VIN of the chip U4 respectively, the second end of the capacitor C31 and the second end of the capacitor C32 are grounded in common, the pin ADJ of the chip U4 is connected to the first end of the resistor R25 and the first end of the resistor R26 respectively, the second end of the resistor R26 is grounded, the second end of the resistor R25 is connected to the VOUT1 pin of the chip U4, the VOUT2 pin of the chip U4 is connected to the first end of the capacitor C42, the first end of the capacitor C33 and the VIN pin of the chip U5 respectively, the second end of the capacitor C42 and the second end of the capacitor C33 are grounded in common, the VOUT pin of the chip U5 is connected to the first end of the capacitor C34, the first end of the capacitor C35, the first end of the capacitor C36 and the pin 3 of the chip U3 respectively.

7. The marine display device of claim 6, wherein, The first isolation module comprises an optocoupler U6, an optocoupler U7, a resistor R25, a resistor R26, a resistor R27, a resistor R28, a capacitor C38, a capacitor C39, a capacitor C40, a filter M23 and a filter M24; The pin 1 of the chip U3 is connected to the first end of the resistor R25 and the collector of the triode of the optocoupler U6 respectively, the emitter of the triode of the optocoupler U6 is grounded, the power supply end of the optocoupler U6, the second end of the resistor R25 and the first end of the capacitor C38 are connected in common to receive a second voltage, the second end of the capacitor C38 is grounded, the anode of the diode of the optocoupler U6 is connected to the first end of the resistor R26, the second end of the resistor R26 is connected to the first end of the capacitor C39 and the first end of the filter M24 respectively, the second end of the capacitor C39 is grounded, the second end of the filter M24 receives a first voltage, the cathode of the diode of the optocoupler U6 is a signal input end, the pin 4 of the chip U3 is connected to the cathode of the diode of the optocoupler U7, the anode of the diode of the optocoupler U7 is connected to the first end of the resistor R27, the second end of the resistor R27 receives a second voltage, the power supply end of the optocoupler U7 is connected to the first end of the resistor R28, the first end of the capacitor C40 and the first end of the filter M23 respectively, the second end of the filter M23 receives a first voltage, the second end of the capacitor C40 is grounded, the collector of the triode of the optocoupler U7 and the second end of the resistor R28 are connected in common as a signal output end, the emitter of the triode of the optocoupler U7 is grounded.

8. The marine display apparatus of claim 1, wherein, The NMEA0183 data conversion module comprises a second filter module, a second data conversion module and a second isolation module connected in sequence, the second filter module is connected with the NMEA0183 bus, and the second data conversion module is connected with the control module.

9. The marine display device of claim 8, wherein, The second filter module comprises a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, a resistor RP1, a resistor RP2, a filter M1, a filter M2, a filter M3 and a filter M4. The NMWA0813 bus interface 1 is connected with the first end of the resistor RP1, the first end of the filter M1 and the first end of the capacitor C1, the NMWA0813 bus interface 2 is connected with the first end of the capacitor C2, the second end of the resistor RP1 and the first end of the filter M2, the NMWA0813 bus interface 3 is connected with the first end of the capacitor C3 and the first end of the filter M3, the NMWA0813 bus interface 4 is connected with the first end of the capacitor C4 and the first end of the filter M4, the second end of the filter M1 is connected with the first end of the capacitor C5, the second end of the filter M2 is connected with the first end of the capacitor C6, the second end of the filter M3 is connected with the first end of the capacitor C7 and the first end of the resistor RP2, the second end of the filter M4 is connected with the first end of the capacitor C8 and the second end of the resistor RP2, the second end of the capacitor C1, the second end of the capacitor C2, the second end of the capacitor C3, the second end of the capacitor C4 are connected to ground, and the second end of the capacitor C5, the second end of the capacitor C6, the second end of the capacitor C7 and the second end of the capacitor C8 are connected to ground.

10. The marine display device of claim 9, wherein, The second data conversion module comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R10, a diode D1, a diode D2, a diode D3, a diode D4, a triode Q1, a chip U2, a capacitor C11, a capacitor C12 and a capacitor C13, and the second isolation module comprises an optical coupling device U1, a resistor R9, a capacitor C9 and a capacitor C10. The second end of the filter M1 is connected to the cathode of the diode D1, the anode of the diode D3, the anode of the diode of the optocoupler U1 respectively, the second end of the filter M2 is connected to the first end of the resistor R1, the second end of the filter M3 is connected to the first end of the resistor R4, the second end of the filter M4 is connected to the first end of the resistor R5, the anode of the diode D1 is connected to the cathode of the diode D2, the anode of the diode D2 is connected to the cathode of the diode D4, the anode of the diode D4 is connected to the first end of the resistor R3, the first end of the resistor R7 and the emitter of the triode Q1 respectively, the second end of the resistor R3 is connected to the first end of the resistor R2, the second end of the resistor R2 is connected to the second end of the resistor R1, the collector of the triode Q1 is connected to the cathode of the diode D3, the base of the triode Q1 is connected to the second end of the resistor R7 and the cathode of the diode of the optocoupler U1 respectively, the collector of the triode of the optocoupler U1, the first end of the resistor R9 and the first end of the capacitor C10 are connected together to form a signal output end, the second end of the resistor R9, the power supply end of the optocoupler U1 and the first end of the capacitor C9 are connected together to receive a first voltage, the emitter of the triode of the optocoupler U1 is grounded, the second end of the capacitor C10 is grounded, the second end of the capacitor C9 is grounded, the second end of the resistor R4 is connected to the first end of the resistor R6 and the pin B of the chip U2 respectively, the second end of the resistor R5 is connected to the second end of the resistor R6 and the pin A of the chip U2 respectively, the pin VCC of the chip U2 is connected to the first end of the resistor R8, the second end of the resistor R8 is connected to the first end of the resistor R10 and the first end of the capacitor C12 respectively, the second end of the capacitor C12 is grounded, the pin RO of the chip U2 is connected to the first end of the capacitor C11, the second end of the capacitor C11 is grounded, the pin the second end of the resistor R10 and the pin DE of the chip U2 respectively, the pin DI of the chip U2 and the first end of the capacitor C13 are connected together to form a signal input end, the second end of the capacitor C13 is grounded.

Images