CN110752858A - Transceiver integrating automatic ship identification function and wireless communication function and ship - Google Patents
Transceiver integrating automatic ship identification function and wireless communication function and ship Download PDFInfo
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- CN110752858A CN110752858A CN201910959671.3A CN201910959671A CN110752858A CN 110752858 A CN110752858 A CN 110752858A CN 201910959671 A CN201910959671 A CN 201910959671A CN 110752858 A CN110752858 A CN 110752858A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3822—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving specially adapted for use in vehicles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/006—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0475—Circuits with means for limiting noise, interference or distortion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/44—Transmit/receive switching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/12—Modulator circuits; Transmitter circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/14—Demodulator circuits; Receiver circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/16—Frequency regulation arrangements
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Abstract
The invention discloses a transceiver integrating a ship automatic identification function and a wireless communication function, which comprises an antenna, a receiving module, a transmitting module and a control module, wherein when the transceiver is in a signal receiving state, the antenna receives a radio frequency signal, correspondingly demodulates the radio frequency signal by the receiving module and then transmits the radio frequency signal to the control module for processing; when the transceiver is in a signal transmitting state, the control module outputs a corresponding baseband signal to the transmitting module for modulation and then outputs the baseband signal to the antenna for transmission. By the scheme, the receiving and the transmitting of the ship information radio frequency signal and the wireless communication radio frequency signal can be realized through the same antenna, the integration of the ship automatic identification function and the wireless communication function is realized, and the integrated development of the maritime equipment is promoted; through the design of single antenna, simplify equipment fixing, promote user experience, reduce equipment cost is favorable to using widely of boats and ships automatic identification equipment.
Description
Technical Field
The invention relates to the technical field of microwave communication, in particular to a transceiver integrating a ship automatic identification function and a wireless communication function.
Background
In the "marine digital traffic age", the AIS (automatic identification system for vessels) provides important information such as names, sailing conditions, distances, and the like of peripheral vessels, and the information improves the safety of vessel sailing and avoids collision of vessels. Meanwhile, the international maritime organization stipulates that all international vessels sailing at 300 total tons or more, non-international vessels sailing at 500 total tons or more, and all passenger vessels are required to be equipped with an automatic identification device. Therefore, AIS equipment has evolved into one of the equipment that ships must be equipped with.
VHF (very high frequency for ships) radio communication is also one of the devices that ships must be equipped with. The VHF special frequency band is adopted for carrying out radio communication between ships, inside the ships, on the ship shore or between the ships and shore users which are transferred by communicating with land through a shore station. The method is widely applied to the aspects of ship avoidance, maritime management, port scheduling, ship internal management, distress search and rescue and the like, and is a main means for completing communication on the water traffic site.
Along with the increasing number of equipment equipped on ships, the demand for integration of the equipment is increasing, and the demand for integration of the VHF communication equipment and the AIS equipment is also increasing rapidly. At present, mainly adopt two antennas to set up the scheme on AIS transceiver and VHF transceiver respectively with the integrated scheme of AIS equipment and VHF communication equipment, reach AIS equipment and VHF communication equipment's real integration, because equipment on the ship is numerous, if the mounted position of antenna is improper, arouse the interference between the equipment very easily moreover, influence the normal use of equipment, constitute the potential safety hazard.
Disclosure of Invention
The invention mainly aims to provide a transceiver integrating a ship automatic identification function and a wireless communication function, and aims to provide a transceiver which truly realizes the integration of the ship automatic identification function and the wireless communication function by using a single antenna.
In order to achieve the above object, the transceiver combining the automatic ship identification function and the wireless communication function according to the present invention includes:
an antenna for receiving/transmitting different types of radio frequency signals; the types of the radio frequency signals comprise ship information radio frequency signals and wireless communication radio frequency signals;
the input end of the receiving module is connected with the antenna and is used for receiving the radio-frequency signals transmitted by the antenna and correspondingly demodulating the radio-frequency signals to form baseband signals of corresponding types;
the output end of the transmitting module is connected with the antenna and is used for modulating the ship information baseband signal or the wireless communication baseband signal to form a corresponding radio frequency signal and amplifying and outputting the radio frequency signal to the antenna;
the control module is provided with a plurality of input/output ports, and the corresponding input/output ports are respectively connected with the input end of the transmitting module and the output end of the receiving module;
when the transceiver is in a signal receiving state, the antenna receives a radio frequency signal, correspondingly demodulates the radio frequency signal by the receiving module and transmits the radio frequency signal to the control module for processing; when the transceiver is in a signal transmitting state, the control module outputs a corresponding baseband signal to the transmitting module for modulation and then outputs the baseband signal to the antenna for transmission.
Preferably, the Control module includes an MCU (Micro Control Unit), a GMSK (Gaussian Minimum Shift Keying) signal encoding/decoding Unit and an FSK (Frequency Shift Keying) signal encoding/decoding Unit, the MCU is in communication connection with the GMSK signal encoding/decoding Unit and the FSK signal encoding/decoding Unit, and the GMSK signal encoding/decoding Unit and the FSK signal encoding/decoding Unit are also connected with the receiving module and the transmitting module;
when the transceiver is in a signal receiving state, the GMSK signal coding/decoding unit is used for decoding ship information baseband signals transmitted by the receiving module and then transmitting the ship information baseband signals to the MCU for processing, and the FSK signal coding/decoding unit is used for decoding wireless communication baseband signals transmitted by the receiving module and then transmitting the wireless communication baseband signals to the MCU for processing; when the transceiver is in a signal transmitting state, the GMSK signal coding/decoding unit codes corresponding instructions output by the MCU into ship information baseband signals and transmits the ship information baseband signals to the transmitting module for modulation output, and the FSK signal coding/decoding unit codes corresponding instructions output by the MCU into wireless communication baseband signals and transmits the wireless communication baseband signals to the transmitting module for modulation output.
Preferably, the transmitting module includes a first frequency generating unit for modulating a ship information baseband signal, a second frequency generating unit for modulating a wireless communication baseband signal, and a radio frequency amplifying unit, an input end of the first frequency generating unit is connected to the GMSK signal encoding/decoding unit, an input end of the second frequency generating unit is connected to the FSK signal encoding/decoding unit, an output end of the first frequency generating unit and an output end of the second frequency generating unit are both connected to an input end of the radio frequency amplifying unit, and an output end of the radio frequency amplifying unit is connected to the antenna as an output end of the transmitting module.
Preferably, the transmitting module further includes a first phase-locked loop and a second phase-locked loop, the first phase-locked loop is connected between the MCU and the first frequency generating unit, and the second phase-locked loop is connected between the MCU and the second frequency generating unit.
Preferably, the transmitting module further includes a microphone and a pre-emphasis unit, the pre-emphasis unit is connected between the microphone and the second frequency generation unit, the wireless communication baseband signal includes a voice baseband signal and a DSC (Digital Selective Call) baseband signal, the microphone converts an input voice signal into an electrical signal, and then the electrical signal is enhanced by the pre-emphasis unit and then transmitted to the second frequency generation unit for modulation processing, and the FSK signal encoding/decoding unit outputs the DSC baseband signal and transmits the DSC baseband signal to the second frequency generation unit for modulation processing.
Preferably, the receiving module includes a first receiving unit for receiving a radio frequency signal for selecting ship information and a second receiving unit for receiving a radio frequency signal for selecting wireless communication, an input end of the first receiving unit and an input end of the second receiving unit are both connected to an antenna, an output end of the first receiving unit is connected to the GMSK signal encoding/decoding unit, and an output end of the second receiving unit is connected to the FSK signal encoding/decoding unit.
Preferably, the receiving module further includes a speaker and a de-emphasis unit, the de-emphasis unit is connected between the speaker and the second receiving unit, the wireless communication radio frequency signal includes a voice radio frequency signal and a DSC radio frequency signal, the second receiving unit demodulates the received voice radio frequency signal and outputs the demodulated voice radio frequency signal to the de-emphasis unit for de-noising and outputting the de-emphasized signal to the speaker, and the second receiving unit demodulates the received DSC radio frequency signal and forms a DSC baseband signal to transmit the DSC baseband signal to the FSK signal encoding/decoding unit.
Preferably, the transceiver further comprises a coupler and a low pass filter for noise removal, which are sequentially connected between the antenna and the input terminal of the receiving module or between the antenna and the output terminal of the transmitting module.
In order to achieve the purpose, the invention further provides a ship, and the ship is provided with the transceiver integrating the ship automatic identification function and the wireless communication function.
According to the transceiver provided by the technical scheme of the invention, the receiving and transmitting of the ship information radio frequency signal and the wireless communication radio frequency signal can be realized through the same antenna without an additional combiner, so that the integration of the automatic ship identification function and the wireless communication function is realized, and the integrated development of maritime equipment is promoted; through the design of single antenna, simplify equipment fixing, promote user experience, reduce equipment cost is favorable to using widely of boats and ships automatic identification equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural connection diagram of an embodiment of a transceiver combining a ship automatic identification function and a wireless communication function according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a transceiver integrating a ship automatic identification function and a wireless communication function.
In the embodiment of the present invention, as shown in fig. 1, the transceiver combining the ship automatic identification function and the wireless communication function includes an antenna 100 for receiving/transmitting different types of radio frequency signals; the types of the radio frequency signals comprise ship information radio frequency signals and wireless communication radio frequency signals;
a receiving module 200, an input end of the receiving module 200 is connected to the antenna 100, and is configured to receive the radio frequency signal transmitted by the antenna 100 and demodulate the radio frequency signal correspondingly to form a baseband signal of a corresponding type;
the output end of the transmitting module 300 is connected to the antenna 100, and is configured to modulate the ship information baseband signal or the wireless communication baseband signal to form a corresponding radio frequency signal, amplify the radio frequency signal, and output the radio frequency signal to the antenna 100;
a control module 400 having a plurality of input/output ports, the corresponding input/output ports being connected to the input terminal of the transmitting module 300 and the output terminal of the receiving module 200, respectively;
when the transceiver is in a signal receiving state, the antenna 100 receives a radio frequency signal, and transmits the radio frequency signal to the control module 400 for processing after being correspondingly demodulated by the receiving module 200; when the transceiver is in a signal transmitting state, the control module 400 outputs a corresponding baseband signal to the transmitting module 300 for modulation and then outputs the baseband signal to the antenna 100 for transmission.
In this embodiment, a receiving/signaling selection switch SW1 may be disposed at the input ends of the antenna 100 and the receiving module 200 and the output end of the transmitting module 300, and the receiving/signaling selection switch SW1 has a moving end and two fixed ends, wherein the moving end is connected to the antenna 100, one fixed end is connected to the input end of the receiving module 200, and the other fixed end is connected to the output end of the transmitting module 300; the receiving/signaling selection switch SW1 is used to select and lock the transceiver in a receiving signal state or a transmitting signal state, that is, when the transceiver is in the receiving signal state, the moving terminal of the receiving/signaling selection switch SW1 is switched to be connected to the stationary terminal connected to the input terminal of the receiving module 200, the rf signal received by the antenna 100 is transmitted to the receiving module 200 through the receiving/signaling selection switch SW1 to be demodulated to form a corresponding baseband signal, and then transmitted to the control module 400 by the receiving module 200 for processing; when the transceiver is in the signal transmitting state, the active terminal of the receiving/signaling selection switch SW1 is switched to be connected to the inactive terminal connected to the output terminal of the transmitting module 300, and the control module 400 outputs the corresponding baseband signal to the transmitting module 300 to be modulated to form a radio frequency signal, and then the radio frequency signal is transmitted to the antenna 100 through the receiving/signaling selection switch SW1 for transmission.
The radio frequency signal in this embodiment includes a ship information radio frequency signal and a wireless communication radio frequency signal, and accordingly, the baseband signal includes a ship information baseband signal or a wireless communication baseband signal.
The ship information radio frequency signal and the ship information baseband signal generally include information such as a ship name, a navigation condition, a distance and the like of a ship, when the transceiver is in a signal transmitting state, the control module 400 encodes the ship information to form a ship information baseband signal in a GMSK format, and the transmitting module 300 correspondingly modulates the encoded ship information baseband signal and transmits the modulated ship information baseband signal to the antenna 100 for transmission; when the transceiver is in a signal receiving state, the ship information radio frequency signal may be divided into multiple channels for demodulation by the receiving module 200 due to a complex demodulation process, in this embodiment, the ship information radio frequency signal received by the antenna 100 is divided into two channels, i.e., a ship information radio frequency signal channel a receiving channel and a ship information radio frequency signal channel B receiving channel, for demodulation, and a ship information baseband signal is formed after corresponding demodulation, and then the ship information baseband signal is transmitted to the control module 400 for GMSK decoding and then corresponding processing.
When the transceiver is in a signal transmitting state, an artificial instruction (the instruction is a voice instruction) can be input through a microphone 360 device such as a microphone, and the instruction is converted into a corresponding electric signal (usually, an audio baseband signal) through the microphone 360, and the transmitting module 300 modulates the electric signal by g (f)3E and transmits the electric signal to the antenna 100 for transmission; the control module 400 may also receive an artificial input command, encode the input command in an FSK format to form a DSC baseband signal, and the transmitting module 300 performs g (f)2B modulation on the DSC baseband signal and transmits the DSC baseband signal to the antenna 100 for transmission. The wireless communication radio Frequency signals are communicated by using VHF (Very High Frequency) radio, and are also correspondingly divided into voice radio Frequency signals and DSC radio Frequency signals, and the two radio Frequency signals are demodulated by different receiving paths in the receiving module 200; when the transceiver is in a signal receiving state, if the radio frequency signal received by the antenna 100 is a voice radio frequency signal, the radio frequency signal is demodulated into a voice baseband signal through the receiving module 200, and then the voice baseband signal is de-emphasized and transmitted to a speaker 230 device such as a loudspeaker for playing; if the radio frequency signal received by the antenna 100 is a DSC radio frequency signal, the DSC radio frequency signal is demodulated through a receiving channel corresponding to the receiving module 200, and then transmitted to the control module 400 for FSK encoding and then corresponding processing.
By the transceiver of the scheme, receiving and transmitting of ship information radio frequency signals and wireless communication radio frequency signals can be realized through the same antenna 100 without an additional combiner, integration of a ship automatic identification function and a wireless communication function is realized, and integration development of maritime equipment is promoted; through the design of single antenna 100, simplify equipment fixing, promote user experience, reduce equipment cost is favorable to propagating the using widely of automatic identification equipment. Moreover, only one antenna 100 is needed for receiving and transmitting, thereby avoiding signal interference and improving the use safety of the transceiver.
Specifically, the control module 400 includes an MCU410, a GMSK signal encoding/decoding unit 420, and an FSK signal encoding/decoding unit 430, where the MCU410 is in communication connection with both the GMSK signal encoding/decoding unit 420 and the FSK signal encoding/decoding unit 430, and the GMSK signal encoding/decoding unit 420 and the FSK signal encoding/decoding unit 430 are also connected with both the receiving module 200 and the transmitting module 300;
when the transceiver is in a signal receiving state, the GMSK signal encoding/decoding unit 420 decodes the ship information baseband signal transmitted by the receiving module 200 and transmits the decoded ship information baseband signal to the MCU410 for processing, and the FSK signal encoding/decoding unit 430 decodes the wireless communication baseband signal transmitted by the receiving module 200 and transmits the decoded ship information baseband signal to the MCU410 for processing; when the transceiver is in a signal transmitting state, the GMSK signal encoding/decoding unit 420 encodes the corresponding command output by the MCU410 into a ship information baseband signal, and transmits the ship information baseband signal to the transmitting module 300 for modulation output, and the FSK signal encoding/decoding unit 430 encodes the corresponding command output by the MCU410 into a wireless communication baseband signal, and transmits the wireless communication baseband signal to the transmitting module 300 for modulation output.
In this embodiment, when the transceiver is in a signal receiving state, the receiving module 200 correspondingly demodulates the radio frequency signal received by the antenna 100 to form various different types of baseband signals, the subsequent processing procedures of the different types of baseband signals are also different, and for the non-voice baseband signal, the control module 400 mainly processes the non-voice baseband signal and then notifies the user of the content of the received radio frequency information through a conventional display or other manners. After demodulation, the signals are converted into low-frequency signals, and at this time, the control module 400 is required to correspondingly decode the demodulated low-frequency signals of different types by the GMSK signal encoding/decoding unit 420 and/or the FSK signal encoding/decoding unit 430, and the demodulated low-frequency signals are transmitted to the MCU410 for processing and displaying.
The GMSK signal encoding/decoding unit 420 is configured to decode a low-frequency ship information baseband signal demodulated from a ship information radio-frequency signal received by the antenna 100, transmit the decoded signal to the MCU410, and the MCU410 controls the corresponding display unit to display the received ship information; the FSK signal encoding/decoding unit 430 is configured to decode a low-frequency DSC baseband signal demodulated from a wireless communication radio frequency signal received by the antenna 100, transmit the decoded signal to the MCU410, and the MCU410 controls the corresponding display unit to display the content of the received wireless communication information. Through the control module 400 integrating the two types of information processing functions, different types of baseband signals transmitted by the receiving module 200 can be processed quickly, and the processing processes of two types of new information can be performed in parallel, so that a user can quickly know the content of the received radio frequency signal.
When the transceiver is in a signal transmitting state, a user can input the content of information to be transmitted through an input device (non-voice input device), the information is directly transmitted to the MCU410 of the control module 400, the MCU410 transmits the part of the information related to the ship information content to the GMSK signal encoding/decoding unit 420, and transmits the part of the related wireless communication content to the FSK signal encoding/decoding unit 430, and the two encoding/decoding units encode the received information to form corresponding baseband signals; the GMSK signal encoding/decoding unit 420 encodes the ship information baseband signal to form a ship information baseband signal, and the FSK signal encoding/decoding unit 430 encodes the ship information baseband signal to form a DSC baseband signal, which is transmitted to the transmitting module 300 for modulation and then transmitted by the antenna 100 for radiation propagation.
The control module 400 has the bidirectional processing function in the receiving and transmitting processes, and the processing of receiving or transmitting signals of different types can be quickly completed through the same control module 400, so that the information processing capability is improved, and the user experience is improved.
Specifically, the receiving module 200 includes a first receiving unit 210 for receiving a radio frequency signal of selected ship information and a second receiving unit 220 for receiving a radio frequency signal of selected wireless communication, an input end of the first receiving unit 210 and an input end of the second receiving unit 220 are both connected to the antenna 100, an output end of the first receiving unit 210 is connected to the GMSK signal encoding/decoding unit 420, and an output end of the second receiving unit 220 is connected to the FSK signal encoding/decoding unit 430.
The receiving module 200 further includes a speaker 230 and a de-emphasis unit 240, the de-emphasis unit 240 is connected between the second receiving unit 220 and the speaker 230, the second receiving unit 220 identifies and demodulates the received voice radio frequency signal and outputs the demodulated voice radio frequency signal to the de-emphasis unit 240 for de-noising and outputting the de-emphasized voice radio frequency signal to the speaker 230, the second receiving unit 220 identifies and demodulates the received DSC radio frequency signal and forms a DSC baseband signal, and transmits the DSC baseband signal to the FSK signal encoding/decoding unit 430.
The frequency ranges corresponding to different radio frequency signals are different, and correspondingly, the frequency ranges of the radio frequency signals that can be selectively demodulated by the first receiving unit 210 and the second receiving unit 220 in the receiving module 200 are also different, and the first receiving unit 210 is configured to receive the ship information radio frequency signal transmitted by the selective antenna 100, demodulate the ship information radio frequency signal, and transmit the demodulated ship information radio frequency signal to the GMSK signal encoding/decoding unit 420 for decoding; in this embodiment, the first receiving unit 210 may also be divided into two paths for receiving, which are a ship information rf signal channel a receiving path and a ship information rf signal channel B receiving path; the second receiving unit 220 is configured to receive the radio frequency signal for selecting wireless communication, and is divided into two receiving paths, one of which is configured to receive and demodulate the voice radio frequency signal transmitted by the selecting antenna 100, and the other is configured to receive and demodulate the DSC radio frequency signal transmitted by the selecting antenna 100. The second receiving unit 220 correspondingly transmits the demodulated voice baseband signal to the de-emphasis unit 240 for processing, and then transmits the processed signal to the speaker 230 for playing, and the speaker 230 plays the content of the information; the second receiving unit 220 correspondingly transmits the demodulated DSC baseband signal to the FSK-free signal encoding/decoding unit 430 for decoding, and then transmits the decoded signal to the control module 400 for processing, so as to display the related information content.
In this embodiment, the demodulation circuit used in each receiving path may be selected according to practical choices, for example, the demodulation of the voice rf signal may use a superheterodyne receiving architecture circuit or a zero intermediate frequency receiving architecture circuit, and other receiving paths may also be implemented with reference to the demodulation circuit of the voice rf signal, as long as the corresponding rf signal can be demodulated into a corresponding baseband signal.
Specifically, the transmitting module 300 includes a first frequency generating unit 310 for modulating a ship information baseband signal, a second frequency generating unit 320 for modulating a wireless communication baseband signal, and a radio frequency amplifying unit 330, an input end of the first frequency generating unit 310 is connected to the GMSK signal encoding/decoding unit 420, an input end of the second frequency generating unit 320 is connected to the FSK signal encoding/decoding unit 430, an output end of the first frequency generating unit 310 and an output end of the second frequency generating unit 320 are both connected to an input end of the radio frequency amplifying unit 330, and an output end of the radio frequency amplifying unit 330 is connected to the antenna 100 as an output end of the transmitting module 300.
In this embodiment, the first frequency generation unit 310 is configured to modulate a ship information baseband signal encoded by the GMSK signal encoding/decoding unit 420, convert the ship information baseband signal into a high-frequency radio frequency signal, and radiate the high-frequency radio frequency signal through the antenna 100; the second frequency generation unit 320 is configured to modulate a DSC baseband signal encoded by the FSK signal encoding/decoding unit 430 or an audio baseband signal collected by the microphone 360 and subjected to pre-emphasis processing, convert the modulated signal into a high-frequency radio frequency signal, and radiate the high-frequency radio frequency signal through the antenna 100.
Further, a transmission selection switch SW2 may be provided between the output terminals of the first frequency generating unit 310 and the second frequency generating unit 320 and the input terminal of the rf amplifying unit 330, and the transmission selection switch SW2 selects whether to transmit the ship information rf signal or the wireless communication baseband signal. The transmission selection switch SW2 has a moving terminal and two fixed terminals, wherein the moving terminal is connected to the input terminal of the rf amplifying unit 330, one of the fixed terminals is connected to the output terminal of the first frequency generating unit 310, and the other fixed terminal is connected to the output terminal of the second frequency generating unit 320. When the ship information radio frequency signal needs to be transmitted, the moving end of the transmission selection switch SW2 is switched to be connected to the fixed end connected to the output end of the first frequency generation unit 310, and the radio frequency amplification unit 330 receives the ship information radio frequency signal modulated by the first frequency generation unit 310, amplifies the signal, and transmits the amplified signal to the antenna 100 for transmission; when a wireless communication radio frequency signal needs to be transmitted, the moving end of the transmission selection switch SW2 is switched to be connected to the fixed end connected to the output end of the second frequency generation unit 320, and the radio frequency amplification unit 330 receives the wireless communication radio frequency signal modulated by the second frequency generation unit 320, amplifies the signal, and transmits the signal to the antenna 100 for transmission; in this embodiment, the same rf amplifying unit 330 is used to amplify and then radiate different types of rf signals, so that the transmission process of the ship information rf signal and the wireless communication rf signal is truly integrated.
Specifically, the transmitting module 300 further includes a first phase-locked loop 340 and a second phase-locked loop 350, wherein the first phase-locked loop 340 is connected between the MCU410 and the first frequency generating unit 310, and the second phase-locked loop 350 is connected between the MCU410 and the second frequency generating unit 320.
The MCU410 is provided with a data control port, which is respectively connected to the first phase-locked loop 340 and the second phase-locked loop 350, and the port has two states, and can select the first phase-locked loop 340 to operate or select the second phase-locked loop 350 to operate; the first frequency generation unit 310 is selected by the first phase locked loop 340 for GMSK modulation and the second frequency generation unit 320 is selected by the second phase locked loop 350 for g (f)3E modulation or g (f)2B modulation.
Further, the transmitting module 300 further includes a microphone 360 and a pre-emphasis unit 370, the pre-emphasis unit 370 is connected to the microphone 360 and the second frequency generation unit 320, the wireless communication baseband signal includes a voice baseband signal and a DSC baseband signal, the microphone 360 converts the input voice signal into an electrical signal, and then the electrical signal is enhanced by the pre-emphasis unit 370 and then transmitted to the second frequency generation unit 320 for modulation processing, and the FSK signal encoding/decoding unit 430 outputs the DSC baseband signal and transmits the DSC baseband signal to the second frequency generation unit 320 for modulation processing.
When the wireless communication radio frequency signal to be transmitted is a voice radio frequency signal, the input audio signal is converted into a corresponding voice baseband signal through the microphone 360, and then the voice baseband signal is pre-emphasized by the pre-emphasis unit 370, transmitted to the second frequency generation unit 320 for g (f)3E modulation, amplified by the radio frequency amplification unit 330, transmitted to the antenna 100, and radiated by the antenna 100; when the wireless communication radio frequency signal to be transmitted is a DSC radio frequency signal, the MCU410 controls the FSK signal encoding/decoding unit 430 to encode the corresponding input signal, and then the encoded input signal is transmitted to the second frequency generating unit 320 to be g (f)2B modulated, and then the rf signal is amplified by the rf amplifying unit 330, transmitted to the antenna 100, and radiated by the antenna 100.
In this embodiment, an amplitude adjusting unit 380 may be disposed between the pre-emphasis unit 370 and the second frequency generation unit 320 and between the FSK signal encoding/decoding unit 430 and the second frequency generation unit 320 to perform amplitude adjustment and re-modulation processing on the voice baseband signal and the DSC baseband signal, respectively, so that the amplitude of the transmitted baseband signal is adapted to the second frequency generation unit 320.
In addition, a wireless communication signal selection switch SW3 may be disposed between the two amplitude adjustment units 380 and the second frequency generation unit 320, and the wireless communication signal selection switch SW3 selects whether to transmit the voice radio frequency signal or the DSC radio frequency signal. The wireless communication signal selection switch SW3 has a moving terminal and two fixed terminals, wherein the moving terminal is connected to the input terminal of the second frequency generation unit 320, one fixed terminal is connected to the output terminal of the amplitude adjustment unit 380 for voice baseband signals, and the other fixed terminal is connected to the output terminal of the amplitude adjustment unit 380 for DSC baseband signals. When a voice radio frequency signal needs to be transmitted, the moving end of the wireless communication signal selection switch SW3 is switched to be connected to the stationary end connected to the output end of the amplitude adjusting unit 380 of the voice baseband signal, and the second frequency generating unit 320 receives the voice baseband signal to perform g (f)3E modulation, then performs signal amplification, and transmits the signal to the antenna 100 for transmission; when a DSC radio frequency signal needs to be transmitted, the moving end of the wireless communication signal selection switch SW3 is switched to be connected to the stationary end connected to the output end of the amplitude adjustment unit 380 of the DSC baseband signal, and the second frequency generation unit 320 receives the DSC baseband signal to perform g (f)2B modulation, and then performs signal amplification and transmits the signal to the antenna 100 for transmission; in the embodiment, different types of wireless communication radio frequency signals are modulated and then emitted by sharing the same frequency generation unit, so that different signals can be modulated by the same device in a time-sharing manner, and the cost is further saved.
In this embodiment, the modulation modes used by the first frequency generating unit 310 and the second frequency generating unit 320 in the transmitting module 300 may be selected according to actual requirements, as long as the modulated carrier wave modulated by the radio frequency signal can meet corresponding standards, and a conventional two-point modulation mode or a digital frequency shift keying mode may be used.
Further, the transceiver further comprises a coupler 500 and a low pass filter 600 for noise removal, wherein the coupler 500 and the low pass filter 600 are sequentially connected between the antenna 100 and the input end of the receiving module 200 or between the antenna 100 and the output end of the transmitting module 300.
By adopting the coupler 500 and the low-pass filter 600 to perform filtering and denoising processing in the transmitting process or the receiving process, the phenomenon of inaccurate signal transmission caused by interference of other interference signals can be avoided.
In embodiments employing the receive/signal select switch SW1, the low pass filter 600 is preferably connected between the coupler 500 and the moving end of the receive/signal select switch SW 1.
Based on the same inventive concept as the above embodiment, this embodiment further provides a ship, where the ship is provided with the transceiver shown in the above embodiment and integrating the ship automatic identification function and the wireless communication function. The structure, principle and corresponding beneficial effects of the transceiver refer to the above-mentioned embodiments of the transceiver, which are not described herein in detail.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A transceiver that integrates a ship automatic identification function and a wireless communication function, comprising:
an antenna for receiving/transmitting different types of radio frequency signals; the types of the radio frequency signals comprise ship information radio frequency signals and wireless communication radio frequency signals;
the input end of the receiving module is connected with the antenna and is used for receiving the radio-frequency signals transmitted by the antenna and correspondingly demodulating the radio-frequency signals to form baseband signals of corresponding types;
the output end of the transmitting module is connected with the antenna and is used for modulating the ship information baseband signal or the wireless communication baseband signal to form a corresponding radio frequency signal and amplifying and outputting the radio frequency signal to the antenna;
the control module is provided with a plurality of input/output ports, and the corresponding input/output ports are respectively connected with the input end of the transmitting module and the output end of the receiving module;
when the transceiver is in a signal receiving state, the antenna receives a radio frequency signal, correspondingly demodulates the radio frequency signal by the receiving module and transmits the radio frequency signal to the control module for processing; when the transceiver is in a signal transmitting state, the control module outputs a corresponding baseband signal to the transmitting module for modulation and then outputs the baseband signal to the antenna for transmission.
2. The transceiver fusing the ship automatic identification function and the wireless communication function according to claim 1, wherein the control module comprises an MCU, a GMSK signal encoding/decoding unit, and an FSK signal encoding/decoding unit, the MCU is communicatively connected to the GMSK signal encoding/decoding unit and the FSK signal encoding/decoding unit, and the GMSK signal encoding/decoding unit and the FSK signal encoding/decoding unit are further connected to the receiving module and the transmitting module;
when the transceiver is in a signal receiving state, the GMSK signal coding/decoding unit is used for decoding ship information baseband signals transmitted by the receiving module and then transmitting the ship information baseband signals to the MCU for processing, and the FSK signal coding/decoding unit is used for decoding wireless communication baseband signals transmitted by the receiving module and then transmitting the wireless communication baseband signals to the MCU for processing; when the transceiver is in a signal transmitting state, the GMSK signal coding/decoding unit codes corresponding instructions output by the MCU into ship information baseband signals and transmits the ship information baseband signals to the transmitting module for modulation output, and the FSK signal coding/decoding unit codes corresponding instructions output by the MCU into wireless communication baseband signals and transmits the wireless communication baseband signals to the transmitting module for modulation output.
3. The transceiver fusing the ship automatic identification function and the wireless communication function according to claim 2, wherein the transmitting module comprises a first frequency generating unit for modulating a ship information baseband signal, a second frequency generating unit for modulating a wireless communication baseband signal, and a radio frequency amplifying unit, an input end of the first frequency generating unit is connected to the GMSK signal encoding/decoding unit, an input end of the second frequency generating unit is connected to the FSK signal encoding/decoding unit, an output end of the first frequency generating unit and an output end of the second frequency generating unit are both connected to an input end of the radio frequency amplifying unit, and an output end of the radio frequency amplifying unit is connected to the antenna as an output end of the transmitting module.
4. The transceiver fusing the ship automatic identification function and the wireless communication function according to claim 3, wherein the transmitting module further comprises a first phase-locked loop and a second phase-locked loop, the first phase-locked loop is connected between the MCU and the first frequency generating unit, and the second phase-locked loop is connected between the MCU and the second frequency generating unit.
5. The transceiver fusing the ship automatic identification function and the wireless communication function according to claim 3, wherein the transmitting module further comprises a microphone and a pre-emphasis unit, the pre-emphasis unit is connected between the microphone and the second frequency generation unit, the wireless communication baseband signal comprises a voice baseband signal and a DSC baseband signal, the microphone converts the input voice signal into an electrical signal, the electrical signal is enhanced by the pre-emphasis unit and then transmitted to the second frequency generation unit for modulation processing, and the FSK signal encoding/decoding unit outputs the DSC baseband signal and transmits the DSC baseband signal to the second frequency generation unit for modulation processing.
6. The transceiver integrating the ship automatic identification function and the wireless communication function as claimed in claim 2, wherein the receiving module comprises a first receiving unit for receiving the radio frequency signal of the selected ship information and a second receiving unit for receiving the radio frequency signal of the selected wireless communication, an input end of the first receiving unit and an input end of the second receiving unit are both connected to an antenna, an output end of the first receiving unit is connected to the GMSK signal encoding/decoding unit, and an output end of the second receiving unit is connected to the FSK signal encoding/decoding unit.
7. The transceiver fusing the ship automatic identification function and the wireless communication function according to claim 6, wherein the receiving module further comprises a speaker and a de-emphasis unit, the de-emphasis unit is connected between the speaker and the second receiving unit, the wireless communication radio frequency signal comprises a voice radio frequency signal and a DSC radio frequency signal, the second receiving unit demodulates the received voice radio frequency signal and outputs the demodulated voice radio frequency signal to the de-emphasis unit for de-noising and then outputs the de-emphasized signal to the speaker, and the second receiving unit demodulates the received DSC radio frequency signal and then forms a DSC baseband signal to transmit the DSC baseband signal to the FSK signal encoding/decoding unit.
8. The transceiver integrating ship automatic identification function and wireless communication function as claimed in claim 1, further comprising a coupler and a low pass filter for noise removal, wherein the coupler and the low pass filter are sequentially connected between the antenna and the input terminal of the receiving module or between the antenna and the output terminal of the transmitting module.
9. A ship, wherein the ship is provided with a transceiver which integrates an automatic ship identification function and a wireless communication function according to any one of claims 1 to 8.
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| CN201910959671.3A CN110752858B (en) | 2019-10-10 | 2019-10-10 | Transceiver integrating automatic ship identification function and wireless communication function and ship |
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