CN212032493U - Marine short-wave radio station demonstration device - Google Patents
Marine short-wave radio station demonstration device Download PDFInfo
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- CN212032493U CN212032493U CN202020124559.6U CN202020124559U CN212032493U CN 212032493 U CN212032493 U CN 212032493U CN 202020124559 U CN202020124559 U CN 202020124559U CN 212032493 U CN212032493 U CN 212032493U
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- 230000005540 biological transmission Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
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- 238000001228 spectrum Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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Abstract
The invention discloses a marine short-wave radio station demonstration device, which comprises a front panel, a digital intermediate frequency unit, a receiving and transmitting channel unit, a frequency synthesis unit, a filtering unit, a power amplifier unit, an antenna tuning interface board and a digital antenna tuner, wherein the digital intermediate frequency unit is connected with the receiving and transmitting channel unit; through the mutual connection among the front panel, the digital intermediate frequency unit, the receiving and transmitting channel unit, the frequency synthesis unit, the filtering unit, the power amplifier unit, the antenna tuning interface board and the digital antenna tuner, the radio station teaching system can detect or simulate various fault conditions through instruments, so that the radio station teaching process is more visual.
Description
Technical Field
The invention belongs to the technical field of radio stations, and particularly relates to a marine short-wave radio station demonstration device.
Background
Short-wave communication has the advantages of simple equipment, convenience in use, long communication distance, good maneuverability, strong anti-interference performance and the like, and is widely applied to various fields at present, particularly the field of military communication. With the development of digital technology, short-wave radio stations are changed from former analog radio stations to present digital radio stations, and the digitization of the short-wave radio stations starts from a baseband and gradually advances to intermediate frequency and radio frequency. The radio station can complete medium and short distance command cooperation and information transmission under the working types of analog telephone, constant amplitude telegraph, high-speed secret data, digital secret telephone, low-speed anti-interference data and burst data.
Therefore, a need is provided for a marine short-wave radio station teaching device, which can be widely applied to the teaching process of the radio station and can provide a more intuitive and clear teaching tool for teaching.
Disclosure of Invention
In order to solve the deficiencies in the prior art, the utility model provides a clearer, more audio-visual radio station teaching system.
The technical scheme adopted by the invention is as follows:
a marine short-wave radio station teaching device comprises a shell, wherein a display, an input keyboard, an audio output port and an audio input port are arranged on a front panel of the shell, and the display, the input keyboard, the audio output port and the audio input port are in signal connection with a front panel controller;
further, the audio input port is connected with a microphone and used for inputting signals; the audio output port is connected with a loudspeaker and used for outputting signals;
further, the system comprises a digital intermediate frequency unit, a transceiving channel unit, a frequency synthesis unit, a filtering unit, a power amplifier unit, an antenna tuning interface board and a digital antenna tuner.
Further, the front panel is in signal connection with the digital intermediate frequency unit; the digital intermediate frequency unit is in signal connection with the transceiving channel unit, the transceiving channel unit is in signal connection with the frequency synthesis unit, the filtering unit and the power amplifier unit, and the filtering unit and the power amplifier unit are connected with each other; the filtering unit is connected with an antenna tuning interface board, and the antenna tuning interface board is connected with the digital antenna tuner.
The invention has the beneficial effects that:
1. the radio station teaching system can well show the connection relation among the front panel, the digital intermediate frequency unit, the receiving and transmitting channel unit, the frequency synthesis unit, the filtering unit, the power amplifier unit, the antenna tuning interface board, the digital antenna tuner and other units, and the processing and transmission process of signals.
2. The radio station teaching system designed by the application can enable the mutual working relation among all parts of the radio station to be displayed more clearly and can simultaneously know the energy supply of each part.
3. The radio station teaching system designed by the application can be used for demonstration of various faults and teaching processes of fault detection and fault elimination. And the voltage and waveform of each test point of each module teaching circuit can be tested on site through an instrument.
Drawings
Fig. 1 is a schematic structural diagram of a radio station teaching system designed by the utility model;
FIG. 2 is a diagram of the connections of the elements within the station teaching system;
in the figure, 1, a shell, 2, a display, 3, an input keyboard, 4, an audio output port, 5 and an audio input port.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The marine short-wave radio station teaching device shown in fig. 1 comprises a shell 1, wherein a display 2, an input keyboard 3, an audio output port 4 and an audio input port 5 are arranged on a front panel of the shell 1, the input keyboard 3 and the audio input port 5 are both connected with an input end of a front panel controller, and commands of an operator are input into the front panel controller through the input keyboard 3 and audio; the signal input display 2 and the audio output port 4 of the port 5 are connected with the output end of the front panel controller, and output signals of the front panel controller are displayed through the display 2 and the audio output port 4 respectively. In this embodiment, the front panel controller may select the DSP chip. In the teaching process, the audio input port 5 can be connected with a microphone, attenuated radio frequency signals are input from the audio input port 5, the audio output port 4 is connected with a loudspeaker or a spectrum analyzer, and received audio signals can be seen at the audio output port 4 by using a spectrum.
As shown in fig. 2, the station teaching system includes, in addition to a front panel, a digital intermediate frequency unit, a transmission/reception channel unit, a frequency synthesizing unit, a filtering unit, a power amplifier unit, a tuning interface board, and a digital antenna tuner. The digital intermediate frequency unit comprises a digital signal processor, the digital signal processor can select a DSP chip, and the digital signal processor is connected with the front panel controller to realize the mutual transmission of data or voice signals between the digital signal processor and the front panel controller; when the system sends data or voice signals, the digital signal processor modulates the data or voice signals; when the system receives a data or voice signal, the digital signal processor demodulates the data or voice signal.
The receiving and transmitting channel unit is respectively connected with the digital intermediate frequency unit, the frequency synthesis unit, the filtering unit and the power amplification unit; the receiving and transmitting channel unit changes the radio frequency input signal filtered by the filtering unit into an intermediate frequency signal and transmits the intermediate frequency signal to the digital intermediate frequency unit; the receiving and transmitting channel unit changes the intermediate frequency signal input by the digital intermediate frequency unit into a radio frequency output signal and sends the radio frequency output signal to a power amplifier board of the power amplifier unit.
The frequency synthesis unit generates two local oscillation signals required by the receiving and transmitting channel unit; and directly sends the local oscillator signal to the transceiving channel unit. In the teaching process, the frequency synthesis unit can detect the magnitude of two local oscillation signals through a frequency spectrograph on one hand; on the other hand, some related faults can be judged, for example, when the radio station crashes, the fault is that the crystal oscillator is invalid or disconnected; when the receiving and sending are invalid, the fault is that the first local oscillator and the second local oscillator are disconnected. When the signal is reduced, the fault is signal attenuation at the local oscillator and the local oscillator.
The filtering unit is respectively connected with the receiving and transmitting channel unit, the power amplifier unit and the antenna tuning interface board, the filtering unit carries out filtering processing on a received signal entering the receiving and transmitting channel unit, and the filtering unit also provides filtering for a transmitting signal entering the antenna tuning interface board. In the teaching process, signals of different frequency bands can be input at the input end of the filtering unit by the audio signal generator, and the signal amplitude of the signals in different output bands can be observed by an oscilloscope or a frequency spectrograph.
The power amplification unit is respectively connected with the receiving and transmitting channel unit and the filtering unit, receives the radio-frequency signals of the receiving and transmitting channel unit, amplifies the radio-frequency signals, and inputs the amplified radio-frequency signals into the filtering unit.
One end of the antenna tuning interface board is connected with the filtering unit, the other end of the antenna tuning interface board is connected with the digital antenna tuner, and the antenna tuning interface unit provides an interface of the digital antenna tuner. In the teaching process, certain sine wave signals are input into the audio signals, and the signal change of the output ends of all stages can be observed by using an oscilloscope. High-level analog fault events can be input at the temperature and power warning end, and output signal changes of all stages are observed at the moment.
The digital antenna tuner is used for completing the matching between the power amplifier output of the transceiver and the antenna, so that the antenna can obtain the maximum radio frequency radiation power, and meanwhile, a channel is provided for the radio station to receive radio frequency signals.
The above embodiments are only used for illustrating the design idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention accordingly, and the protection scope of the present invention is not limited to the above embodiments. Therefore, all equivalent changes and modifications made in accordance with the principles and concepts disclosed herein are intended to be included within the scope of the present invention.
Claims (2)
1. The marine short-wave radio station teaching device is characterized by comprising a shell (1), wherein a display (2), an input keyboard (3), an audio output port (4) and an audio input port (5) are arranged on a front panel of the shell (1), and the display (2), the input keyboard (3), the audio output port (4) and the audio input port (5) are in signal connection with a front panel controller; the audio input port (5) is connected with a microphone and is used for inputting signals; the audio output port (4) is connected with a loudspeaker and used for outputting signals;
the antenna also comprises a digital intermediate frequency unit, a receiving and transmitting channel unit, a frequency synthesis unit, a filtering unit, a power amplifier unit, an antenna tuning interface board and a digital antenna tuner.
2. The marine short wave radio station demonstration device according to claim 1, wherein the front panel is in signal connection with a digital intermediate frequency unit; the digital intermediate frequency unit is in signal connection with the transceiving channel unit, the transceiving channel unit is in signal connection with the frequency synthesis unit, the filtering unit and the power amplifier unit, and the filtering unit and the power amplifier unit are connected with each other; the filtering unit is connected with an antenna tuning interface board, and the antenna tuning interface board is connected with the digital antenna tuner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020124559.6U CN212032493U (en) | 2020-01-19 | 2020-01-19 | Marine short-wave radio station demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020124559.6U CN212032493U (en) | 2020-01-19 | 2020-01-19 | Marine short-wave radio station demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212032493U true CN212032493U (en) | 2020-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020124559.6U Expired - Fee Related CN212032493U (en) | 2020-01-19 | 2020-01-19 | Marine short-wave radio station demonstration device |
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| Country | Link |
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| CN (1) | CN212032493U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114783238A (en) * | 2021-06-07 | 2022-07-22 | 中国人民解放军海军航空大学 | Short-wave radio station teaching system capable of conducting fault diagnosis training |
-
2020
- 2020-01-19 CN CN202020124559.6U patent/CN212032493U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114783238A (en) * | 2021-06-07 | 2022-07-22 | 中国人民解放军海军航空大学 | Short-wave radio station teaching system capable of conducting fault diagnosis training |
| CN114783238B (en) * | 2021-06-07 | 2024-05-28 | 中国人民解放军海军航空大学 | Short-wave radio station teaching system capable of performing fault diagnosis training |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201127 |