CN112929089A - Communication signal transmission method, circuit and system - Google Patents
Communication signal transmission method, circuit and system Download PDFInfo
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- CN112929089A CN112929089A CN202110128153.4A CN202110128153A CN112929089A CN 112929089 A CN112929089 A CN 112929089A CN 202110128153 A CN202110128153 A CN 202110128153A CN 112929089 A CN112929089 A CN 112929089A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
- H04B10/25752—Optical arrangements for wireless networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
- H04B10/25752—Optical arrangements for wireless networks
- H04B10/25758—Optical arrangements for wireless networks between a central unit and a single remote unit by means of an optical fibre
- H04B10/25759—Details of the reception of RF signal or the optical conversion before the optical fibre
Abstract
The invention discloses a communication signal transmission method, a circuit and a system, and belongs to the field of aviation communication signal transmission. In the signal sending process, standard protocol transmission signals sent by a standard protocol interface chip related to the avionic product are isolated and converted into general interface transmission signals through a first isolation assembly and a first DSP assembly, then the signal transmitted by the general interface is converted into an optical fiber signal by the first conversion device, and after the optical fiber signal is transmitted in a long distance, in the signal receiving process of the receiving side, the optical fiber signal is converted into a universal interface transmission signal through the second conversion device, the universal interface transmission signal is converted into a standard protocol transmission signal by the second DSP component for the analysis of the information processing end to obtain the information to be transmitted, therefore, the problem that transmission signals in the avionic product are interfered by a CEMEE test is solved, induction noise generated in an electromagnetic environment is prevented from being brought into the avionic device, and the capability of the avionic device for resisting the CEMEE test environment is improved.
Description
Technical Field
The invention relates to the field of aviation communication signal transmission, in particular to a communication signal transmission method, circuit and system.
Background
Complex Electromagnetic Environment Effects (cemes) refer to a general term for the effect of Complex Electromagnetic environments on avionics products. The complex electromagnetic environment effect includes various forms, mainly energy effect and information effect.
The energy effect is that under a complex electromagnetic environment, an electromagnetic signal acts on an avionic product by utilizing electromagnetic energy of the electromagnetic signal, so that the normal work of the avionic product is influenced, even the avionic product is physically damaged and destroyed, namely the avionic product is influenced from a physical level; the information effect, that is, the electromagnetic signal affects the information link of the avionic product, which prevents the avionic product from generating, transmitting, acquiring and utilizing information, and causes "soft damage" to the avionic product, that is, the avionic product is affected from the information level.
In the related art, various CEMEE tests were conducted to verify that the product could work reliably in CEMEE. However, in a CEMEE test, an avionic product needs to remotely monitor a product working signal in a specified protocol communication mode, and in the transmission process, a standard protocol transmission signal under a universal serial port type is easily subjected to electromagnetic interference, and meanwhile, an interference signal is transmitted to an upper computer to influence the normal work of the computer.
Disclosure of Invention
The embodiment of the disclosure provides a communication signal transmission method, a communication signal transmission circuit and a communication signal transmission system, which can solve the problem that an avionic product is easy to suffer from electromagnetic interference when a CEMEE test is carried out in the related art. The technical scheme is as follows:
in one aspect, a communication signal transmission method is provided, the method being used for a communication signal receiving device and a communication signal sending device, the communication signal sending device being suitable for an avionics system, the method comprising:
responding to the avionics system to carry out a CEMEE test, and electrically isolating a standard protocol transmission signal and a universal interface chip through a first isolation assembly, wherein the standard protocol transmission signal carries information to be transmitted, the standard protocol transmission signal is sent out by the standard protocol interface chip, the standard protocol interface chip is designed according to digital information transmission requirements specified by avionics equipment, and the universal interface chip is designed as a universal serial interface;
converting the standard protocol transmission Signal into a universal interface transmission Signal through a first Digital Signal Processing (DSP) component, and inputting the universal interface transmission Signal to the universal interface chip, wherein the universal interface transmission Signal carries the information to be transmitted;
inputting the universal interface transmission signal to a second isolation component through the universal interface chip;
outputting the universal interface transmission signal to a first conversion device through the second isolation component;
converting the universal interface transmission signal into an optical fiber signal through the first conversion device, wherein the optical fiber signal is suitable for long-distance transmission;
and the optical fiber signals are transmitted in a long distance in a wireless communication mode, and the optical fiber signals are received at communication signal receiving equipment of the avionic system.
In another aspect, a communication signal transmission method is provided for a communication signal receiving apparatus adapted for use in an avionics system, the method comprising:
converting the optical fiber signal into a universal interface transmission signal by a second conversion device in response to receiving the optical fiber signal, wherein the optical fiber signal is sent by communication signal sending equipment of the avionics system and is converted by the first conversion device, the first conversion device is used for converting the universal interface transmission signal into the optical fiber signal, the universal interface transmission signal is converted by a first DSP component, the first DSP component is used for converting a standard protocol transmission signal into the universal interface transmission signal, the universal interface transmission signal carries information to be transmitted, the information to be transmitted is stored in the standard protocol transmission signal, the standard protocol transmission signal is sent by a standard protocol interface chip, and the standard protocol interface chip is designed according to the digital information transmission requirement specified by the avionic device;
converting the universal interface transmission signal into the standard protocol transmission signal through a second DSP component, and transmitting the standard protocol transmission signal to an information processing end of the communication signal receiving equipment;
and analyzing the standard protocol transmission signal through the information processing end to obtain the information to be transmitted.
In another aspect, there is provided a signal transmission circuit for a communication signal transmission apparatus, the signal transmission circuit including: the device comprises a first power supply assembly, a first isolation assembly, a second isolation assembly, a standard protocol interface chip, a general interface chip, a first DSP assembly and a first conversion device;
the first power supply module is respectively connected with the first isolation module, the second isolation module, the standard protocol interface chip, the general interface chip, the first DSP module and the first conversion device;
the first isolation assembly is connected with the standard protocol interface chip, the standard protocol interface chip is connected with one end of the first DSP assembly, the other end of the first DSP assembly is connected with the universal interface chip, the universal interface chip is also connected with the second isolation assembly, and the second isolation assembly is also connected with the first conversion device;
the first isolation assembly is used for electrically isolating a standard protocol transmission signal from the universal interface chip, the standard protocol interface chip is used for generating a standard protocol transmission signal according to information to be transmitted, the first DSP assembly is used for converting the standard protocol transmission signal into a universal interface transmission signal and inputting the universal interface transmission signal into the universal interface chip, the universal interface chip and the second isolation assembly are used for transmitting the universal interface transmission signal to the first conversion device, the first conversion device is used for converting the universal interface transmission signal into an optical fiber signal and sending the optical fiber signal, and the optical fiber signal is suitable for long-distance transmission.
In another aspect, there is provided a signal receiving circuit for a communication signal receiving apparatus, the signal receiving circuit including: the second power supply assembly, the second conversion device, the second DSP assembly and the information processing terminal;
the second power supply module is respectively connected with the second conversion device, the second DSP module and the information processing terminal;
the second conversion device is connected with one end of the second DSP assembly, and the other end of the second DSP assembly is connected with the information processing end;
the second conversion device is used for converting an optical fiber signal into a universal interface transmission signal, the second DSP assembly is used for converting the universal interface transmission signal into a standard protocol transmission signal and transmitting the standard protocol transmission signal to the information processing end, and the information processing end is used for analyzing the standard protocol transmission signal to obtain information to be transmitted.
In another aspect, a communication signal transmission system is provided, which includes: a communication signal transmitting device and a communication signal receiving device;
the communication signal transmitting apparatus includes the signal transmitting circuit according to the above aspect;
the communication signal receiving apparatus includes the signal receiving circuit according to the above aspect.
The invention provides a communication signal transmission system which comprises communication signal sending equipment and communication signal receiving equipment. Wherein, in the signal sending circuit, standard protocol transmission signals sent by a standard protocol interface chip related to the avionic product are isolated and converted into general interface transmission signals through a first isolation component and a first DSP component, then the signal transmitted by the general interface is converted into an optical fiber signal by the first conversion device, and after the optical fiber signal is transmitted in a long distance, in the signal receiving circuit of the receiving side, the optical fiber signal is converted into a universal interface transmission signal through a second conversion device, the universal interface transmission signal is converted into a standard protocol transmission signal by a second DSP component to be analyzed by an information processing end to obtain information to be transmitted, therefore, the problem that transmission signals in the avionic product are interfered by a CEMEE test is solved, induction noise generated in an electromagnetic environment is prevented from being brought into the avionic device, and the capability of the avionic device for resisting the CEMEE test environment is improved.
Drawings
Fig. 1 is a schematic diagram of a communication signal transmission system provided in an exemplary embodiment of the present application;
fig. 2 is a circuit diagram illustrating a signal transmitting circuit and a signal receiving circuit according to an exemplary embodiment of the present application;
fig. 3 shows a circuit schematic diagram of a signal transmitting circuit and a signal receiving circuit provided in another exemplary embodiment of the present application;
fig. 4 is a flowchart illustrating a communication signal transmission method according to an exemplary embodiment of the present application;
fig. 5 is a flowchart illustrating a communication signal transmission method according to another exemplary embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Reference herein to "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
First, specific terms referred to in the present application are explained.
A universal interface chip: in the application, the universal interface chip refers to an interface chip with a port conforming to a serial data communication interface standard, such as an RS422 interface chip, an RS232 interface chip, an RS485 interface chip and the like, and because the standard interface type under the universal standard is not single, a novel interface type exists along with technical improvement, and therefore the universal interface chip referred to in the application can refer to any type of interface chip conforming to the serial data communication interface standard.
The general interface transmits signals: correspondingly, the signal sent by the universal interface chip port is defined as a universal interface transmission signal. The transmission format of the universal interface transmission signal conforms to the standard format of the current interface chip type.
Standard protocol interface chip: in the present application, the communication signal transmission method, the communication signal transmission circuit and the communication signal transmission system are applicable to avionic systems, and for avionic products, the avionic engineering committee specifies digital information transmission requirements between avionic devices and related systems, such as ARINC429 standard, 1394B standard, 1553B standard, ARINC664 standard and the like.
Standard protocol transport signals: correspondingly, the signal sent by the standard protocol interface chip port is defined as a standard protocol transmission signal. The transmission format of the standard protocol transmission signal conforms to the standard format of the current interface chip type.
In the communication signal transmission system shown in fig. 1, the communication signal sending device 10 includes a signal sending circuit, and the communication signal receiving device 11 includes a signal receiving circuit, and during the wireless transmission of signals, information is transmitted between the communication signal sending device 10 and the communication signal receiving device 11 through the signal sending circuit and the signal receiving circuit, please refer to fig. 2, which shows a circuit schematic diagram of the signal sending circuit and the signal receiving circuit.
Schematically, as shown in fig. 2, the signal transmission circuit includes a first power supply component 201, a first isolation component 202, a second isolation component 203, a standard protocol interface chip 204, a general purpose interface chip 205, a first DSP component 206, and a first conversion device 207; the signal receiving circuit 21 comprises a second power supply component 211, a second switching device 212, a second DSP component 213 and an information processing terminal 214.
In one possible embodiment, the first power supply module 201 includes a dc power supply module and an electric storage module for supplying power. In one example, the direct current power supply component adopts a direct current power supply of 18V-30V, and the power storage module adopts an internal power supply of 24V to supply power so as to ensure that the power storage module supplies power when the direct current power supply cannot supply power, wherein the power storage module can be charged through the direct current power supply component.
In one possible embodiment, the dc power supply assembly is provided with a power supply circuit control unit for converting an external dc power supply (e.g. 24V) into a power supply (e.g. 3.3V, 5V, etc.) adapted to the requirements of the respective interface chip.
The connection mode on the signal transmission circuit side includes: the first power supply module 201 is respectively connected to the first isolation module 202, the second isolation module 203, the standard protocol interface chip 204, the universal interface chip 205, the first DSP module 206 and the first conversion device 207, further, the first isolation module 202 is connected to the standard protocol interface chip 204, the standard protocol interface chip 204 is connected to one end of the first DSP module 206, the other end of the first DSP module is connected to the universal interface chip 205, the universal interface chip 205 is further connected to the second isolation module 203, and the second isolation module 203 is further connected to the first conversion device 207.
The connection method on the signal receiving circuit 21 side includes: the second power supply module 211 is connected to the second conversion device 212, the second DSP module 213 and the information processing terminal 214, and further, the second conversion device 212 is connected to one end of the second DSP module 213, and the other end of the second DSP module 213 is connected to the information processing terminal 214.
In the signal transmitting circuit, the first isolation component 202 is configured to electrically isolate a standard protocol transmission signal from the universal interface chip 205 by using a high-speed optical coupler, the standard protocol interface chip 204 is configured to generate a standard protocol transmission signal according to information to be transmitted, the first DSP component 206 is configured to convert the standard protocol transmission signal into a universal interface transmission signal and input the universal interface transmission signal to the universal interface chip 205, the universal interface chip 205 and the second isolation component 203 are configured to transmit the universal interface transmission signal to the first conversion device 207, the first conversion device 207 is configured to convert the universal interface transmission signal into an optical fiber signal and transmit the optical fiber signal, and the optical fiber signal is suitable for long-distance transmission.
In the signal receiving circuit 21, the second conversion device 212 is configured to convert the optical fiber signal into a universal interface transmission signal, the second DSP component 213 is configured to convert the universal interface transmission signal into a standard protocol transmission signal and transmit the standard protocol transmission signal to the information processing terminal 214, and the information processing terminal 214 is configured to analyze the standard protocol transmission signal to obtain information to be transmitted.
On the signal transmitting side, optionally, the first DSP component 206 includes a DSP chip and a clock circuit, where the DSP chip is configured to perform signal processing on the standard protocol transmission signal according to a target crystal frequency provided by the clock circuit to obtain a universal interface transmission signal.
In one example, the target crystal frequency is 30 MHz.
In a possible embodiment, the first DSP module 206 further includes a monitoring circuit, the monitoring circuit is configured to monitor an operation process of the DSP chip, and the monitoring circuit is further configured to reset a current operation process of the DSP chip when the signal processing time is longer than a preset time.
On the signal receiving side, the second DSP module 213 also includes a corresponding DSP chip and a clock circuit for implementing signal processing when the universal interface transmission signal is converted into the standard protocol transmission signal, and similarly, also includes a corresponding monitoring circuit for monitoring the operation processing process of the DSP chip, and performing reset processing when an operation abnormality occurs.
In a possible embodiment, the signal interaction between the signal transmitting circuit and the signal receiving circuit is realized by wireless communication, which is not limited by the present invention.
The invention provides a communication signal transmission system which comprises communication signal sending equipment and communication signal receiving equipment. Wherein, in the signal sending circuit, standard protocol transmission signals sent by a standard protocol interface chip related to the avionic product are isolated and converted into general interface transmission signals through a first isolation component and a first DSP component, then the signal transmitted by the general interface is converted into an optical fiber signal by the first conversion device, and after the optical fiber signal is transmitted in a long distance, in the signal receiving circuit of the receiving side, the optical fiber signal is converted into a universal interface transmission signal through a second conversion device, the universal interface transmission signal is converted into a standard protocol transmission signal by a second DSP component to be analyzed by an information processing end to obtain information to be transmitted, therefore, the problem that transmission signals in the avionic product are interfered by a CEMEE test is solved, induction noise generated in an electromagnetic environment is prevented from being brought into the avionic device, and the capability of the avionic device for tolerating the CEMEE test working environment is improved.
Besides the above embodiments, the present application can also perform a structural design of multi-thread signal processing according to the number of communication signal transmissions.
As shown in fig. 3, the signal transmitting circuit at the communication signal transmitting device 20 is designed in a dual-thread processing structure, and shares a first power supply component 201, and in this structure, the communication signal transmitting device 20 can synchronously transmit the dual-thread signal to the communication signal receiving device 21, and each group of signal transmitting circuit structures implements a single-thread signal conversion function.
The signal conversion function is bidirectional, and the communication signal transmission rate is self-adaptive.
Referring to fig. 4, a flowchart of a communication signal transmission method according to an exemplary embodiment of the present application is shown. In this embodiment, the method is described as an example of the method used in the communication signal transmission system shown in fig. 1, and the method includes:
step 401, responding to a CEMEE test of a complex electromagnetic environment effect developed by an avionic system, and electrically isolating a standard protocol transmission signal from a universal interface chip through a first isolation assembly, wherein the standard protocol transmission signal carries information to be transmitted, the standard protocol transmission signal is sent out by the standard protocol interface chip, the standard protocol interface chip is designed according to digital information transmission requirements specified by the avionic device, and the universal interface chip is designed as a universal serial interface.
Step 402, converting the standard protocol transmission signal into a universal interface transmission signal through the first digital signal processing DSP component, and inputting the universal interface transmission signal to the universal interface chip, where the universal interface transmission signal carries information to be transmitted.
And 403, inputting the universal interface transmission signal to the second isolation component through the universal interface chip.
Step 404, outputting the universal interface transmission signal to the first conversion device through the second isolation component.
Step 405, the universal interface transmission signal is converted into an optical fiber signal by the first conversion device, and the optical fiber signal is suitable for long-distance transmission.
And 406, carrying out long-distance transmission on the optical fiber signal in a wireless communication mode, and completing the reception of the optical fiber signal at a communication signal receiving device of the avionics system.
Step 407, in response to receiving the optical fiber signal, converting the optical fiber signal into a universal interface transmission signal through a second conversion device, where the optical fiber signal is sent out by a communication signal sending device of the avionics system, and the optical fiber signal is converted by a first conversion device, the first conversion device is configured to convert the universal interface transmission signal into the optical fiber signal, the universal interface transmission signal is converted by a first DSP component, the first DSP component is configured to convert a standard protocol transmission signal into a universal interface transmission signal, the universal interface transmission signal carries information to be transmitted, the information to be transmitted is stored in a standard protocol transmission signal, the standard protocol transmission signal is sent out by a standard protocol interface chip, and the standard protocol interface chip is designed according to a digital information transmission requirement specified by the avionics device.
Step 408, converting the universal interface transmission signal into a standard protocol transmission signal through the second DSP component, and transmitting the standard protocol transmission signal to the information processing end of the communication signal receiving device.
And 409, analyzing the standard protocol transmission signal through the information processing end to obtain the information to be transmitted.
The invention provides a communication signal transmission method, which comprises a signal sending process at a communication signal sending device and a signal receiving process at a communication signal receiving device. Wherein, in the signal sending process, the standard protocol transmission signal sent by the standard protocol interface chip related to the avionic product is converted into a universal interface transmission signal through the first isolation component and the first DSP component in an isolation way, then the signal transmitted by the general interface is converted into an optical fiber signal by the first conversion device, and after the optical fiber signal is transmitted in a long distance, in the signal receiving process of the receiving side, the optical fiber signal is converted into a universal interface transmission signal through the second conversion device, the universal interface transmission signal is converted into a standard protocol transmission signal by the second DSP component for the analysis of the information processing end to obtain the information to be transmitted, therefore, the problem that transmission signals in the avionic product are interfered by a CEMEE test is solved, induction noise generated in an electromagnetic environment is prevented from being brought into the avionic device, and the capability of the avionic device for tolerating the CEMEE test working environment is improved.
Please refer to fig. 5, which shows a flowchart of a communication signal transmission method according to another exemplary embodiment of the present application. In this embodiment, the method is described as an example of the method used in the communication signal transmission system shown in fig. 1, and the method includes:
step 501, responding to a CEMEE test of a complex electromagnetic environment effect of an avionic system, electrically isolating a standard protocol transmission signal and a universal interface chip through a first isolation assembly, wherein the standard protocol transmission signal carries information to be transmitted, the standard protocol transmission signal is sent out by the standard protocol interface chip, the standard protocol interface chip is designed according to digital information transmission requirements specified by the avionic system, and the universal interface chip is designed as a universal serial interface.
Step 502, under the target crystal oscillator frequency provided by the clock circuit, the standard protocol transmission signal is processed by the DSP chip to obtain a universal interface transmission signal.
Wherein, the first DSP subassembly includes DSP chip and clock circuit.
And 503, in response to the signal processing time being longer than the preset time, resetting the current operation process of the DSP chip through the monitoring circuit.
In one possible implementation, the first DSP module further includes a monitoring circuit for monitoring a process of operation of the DSP chip.
Step 504, the universal interface transmission signal is input to the second isolation component through the universal interface chip.
And 505, outputting the universal interface transmission signal to the first conversion device through the second isolation component.
Step 506, the universal interface transmission signal is converted into an optical fiber signal through the first conversion device, and the optical fiber signal is suitable for long-distance transmission.
And 507, carrying out remote transmission on the optical fiber signals in a wireless communication mode, and completing the reception of the optical fiber signals at communication signal receiving equipment of the avionics system.
Step 508, in response to receiving the optical fiber signal, converting the optical fiber signal into a universal interface transmission signal through a second conversion device, wherein the optical fiber signal is sent out by a communication signal sending device of the avionics system, the optical fiber signal is converted by a first conversion device, the first conversion device is used for converting the universal interface transmission signal into the optical fiber signal, the universal interface transmission signal is converted by a first DSP component, the first DSP component is used for converting a standard protocol transmission signal into the universal interface transmission signal, the universal interface transmission signal carries information to be transmitted, the information to be transmitted is stored in a standard protocol transmission signal, the standard protocol transmission signal is sent out by a standard protocol interface chip, and the standard protocol interface chip is designed according to a digital information transmission requirement of avionics equipment specification.
Step 509, the second DSP component converts the universal interface transmission signal into a standard protocol transmission signal, and transmits the standard protocol transmission signal to the information processing end of the communication signal receiving apparatus.
And 510, analyzing the standard protocol transmission signal through the information processing end to obtain the information to be transmitted.
In the present invention, on the basis of the above embodiment, in the signal transmission circuit at the communication signal transmission device, the first DSP component includes a DSP chip for independently processing signal conversion, so as to improve the signal conversion efficiency, and is provided with a monitoring circuit for monitoring and managing the operation process of the DSP chip, and in response to the signal processing time being longer than the preset time, the monitoring circuit resets the current operation process of the DSP chip, so as to repair the operation jam, the lost frame, and the like in time.
It should be noted that, in the above embodiments, the step that takes the communication signal sending device as the execution main body may be implemented as a communication signal transmission method on the communication signal sending device side, and the step that takes the communication signal receiving device as the execution main body may be implemented as a communication signal transmission method on the communication signal receiving device side, which is not described herein again.
Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in this invention may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (9)
1. A communication signal transmission method for a communication signal transmitting device adapted for use in an avionics system, the method comprising:
responding to the avionics system to carry out a CEMEE test of a complex electromagnetic environment effect, and electrically isolating a standard protocol transmission signal and a universal interface chip through a first isolation assembly, wherein the standard protocol transmission signal carries information to be transmitted, the standard protocol transmission signal is sent out by the standard protocol interface chip, the standard protocol interface chip is designed according to the digital information transmission requirement specified by the avionics system, and the universal interface chip is designed as a universal serial interface;
converting the standard protocol transmission signal into a universal interface transmission signal through a first digital signal processing DSP component, and inputting the universal interface transmission signal into the universal interface chip, wherein the universal interface transmission signal carries the information to be transmitted;
inputting the universal interface transmission signal to a second isolation component through the universal interface chip;
outputting the universal interface transmission signal to a first conversion device through the second isolation component;
converting the universal interface transmission signal into an optical fiber signal through the first conversion device, wherein the optical fiber signal is suitable for long-distance transmission;
and the optical fiber signals are transmitted in a long distance in a wireless communication mode, and the optical fiber signals are received at communication signal receiving equipment of the avionic system.
2. The communication signal transmission method according to claim 1, wherein the first DSP component includes a DSP chip and a clock circuit;
the converting the standard protocol transmission signal into a universal interface transmission signal by the first DSP component includes:
and under the target crystal oscillator frequency provided by the clock circuit, the DSP chip is used for carrying out signal processing on the standard protocol transmission signal to obtain the universal interface transmission signal.
3. The method of claim 2, wherein the first DSP component further comprises a monitoring circuit configured to monitor a running process of the DSP chip, the method further comprising:
and resetting the current operation process of the DSP chip through the monitoring circuit in response to the signal processing time being greater than the preset time.
4. A communication signal transmission method for a communication signal receiving apparatus adapted for use in an avionics system, the method comprising:
converting the optical fiber signal into a universal interface transmission signal by a second conversion device in response to receiving the optical fiber signal, wherein the optical fiber signal is sent by communication signal sending equipment of the avionics system and is converted by the first conversion device, the first conversion device is used for converting the universal interface transmission signal into the optical fiber signal, the universal interface transmission signal is converted by a first DSP component, the first DSP component is used for converting a standard protocol transmission signal into the universal interface transmission signal, the universal interface transmission signal carries information to be transmitted, the information to be transmitted is stored in the standard protocol transmission signal, the standard protocol transmission signal is sent by a standard protocol interface chip, and the standard protocol interface chip is designed according to the digital information transmission requirement specified by the avionic device;
converting the universal interface transmission signal into the standard protocol transmission signal through a second DSP component, and transmitting the standard protocol transmission signal to an information processing end of the communication signal receiving equipment;
and analyzing the standard protocol transmission signal through the information processing end to obtain the information to be transmitted.
5. A signal transmission circuit for a communication signal transmission apparatus, the signal transmission circuit comprising: the device comprises a first power supply assembly, a first isolation assembly, a second isolation assembly, a standard protocol interface chip, a general interface chip, a first DSP assembly and a first conversion device;
the first power supply module is respectively connected with the first isolation module, the second isolation module, the standard protocol interface chip, the general interface chip, the first DSP module and the first conversion device;
the first isolation assembly is connected with the standard protocol interface chip, the standard protocol interface chip is connected with one end of the first DSP assembly, the other end of the first DSP assembly is connected with the universal interface chip, the universal interface chip is also connected with the second isolation assembly, and the second isolation assembly is also connected with the first conversion device;
the first isolation assembly is used for electrically isolating a standard protocol transmission signal from the universal interface chip, the standard protocol interface chip is used for generating the standard protocol transmission signal according to information to be transmitted, the first DSP assembly is used for converting the standard protocol transmission signal into a universal interface transmission signal and inputting the universal interface transmission signal into the universal interface chip, the universal interface chip and the second isolation assembly are used for transmitting the universal interface transmission signal to the first conversion device, the first conversion device is used for converting the universal interface transmission signal into an optical fiber signal and sending the optical fiber signal, and the optical fiber signal is suitable for long-distance transmission.
6. The signal transmission circuit of claim 5, wherein the first DSP component comprises a DSP chip and a clock circuit;
and the DSP chip is used for carrying out signal processing on the standard protocol transmission signal according to the target crystal oscillator frequency provided by the clock circuit to obtain the universal interface transmission signal.
7. The signal transmission circuit of claim 6, wherein the first DSP component further comprises a monitoring circuit;
the monitoring circuit is used for monitoring the operation processing process of the DSP chip and is also used for resetting the current operation process of the DSP chip when the signal processing time is longer than the preset time.
8. A signal receiving circuit for a communication signal receiving device, the signal receiving circuit comprising: the second power supply assembly, the second conversion device, the second DSP assembly and the information processing terminal;
the second power supply module is respectively connected with the second conversion device, the second DSP module and the information processing terminal;
the second conversion device is connected with one end of the second DSP assembly, and the other end of the second DSP assembly is connected with the information processing end;
the second conversion device is used for converting an optical fiber signal into a universal interface transmission signal, the second DSP assembly is used for converting the universal interface transmission signal into a standard protocol transmission signal and transmitting the standard protocol transmission signal to the information processing end, and the information processing end is used for analyzing the standard protocol transmission signal to obtain information to be transmitted.
9. A communication signal transmission system, comprising: a communication signal transmitting device and a communication signal receiving device;
the communication signal transmitting device comprises the signal transmitting circuit according to any one of claims 5 to 7;
the communication signal receiving apparatus includes the signal receiving circuit according to claim 8.
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| CN202110128153.4A CN112929089B (en) | 2021-01-29 | 2021-01-29 | Communication signal transmission method, circuit and system |
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| CN202110128153.4A CN112929089B (en) | 2021-01-29 | 2021-01-29 | Communication signal transmission method, circuit and system |
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| CN114143135A (en) * | 2021-11-17 | 2022-03-04 | 天津市英贝特航天科技有限公司 | Remote data transmission device, system and method |
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