CN107144751B - Multi-channel vector network parameter analysis system and method - Google Patents
Multi-channel vector network parameter analysis system and method Download PDFInfo
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- CN107144751B CN107144751B CN201710473372.XA CN201710473372A CN107144751B CN 107144751 B CN107144751 B CN 107144751B CN 201710473372 A CN201710473372 A CN 201710473372A CN 107144751 B CN107144751 B CN 107144751B
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Abstract
The invention provides a multi-channel network parameter analysis system, which comprises: the interface control and digital processing board is in butt joint with the service application program through different channel interfaces, and the signal generation and receiving processing device is connected with the tested equipment through a test port; the interface control and digital processing board comprises a channel data analysis module, the channel data analysis module interacts with a communication module of a service application program to complete parameter setting and original data interaction between the analysis system and the service application program, and therefore a complete vector network analyzer system is formed. The invention realizes the mobility and modularization of the network analyzer, and also adds the functions of remote testing and cloud testing, so that the network analyzer can simultaneously meet the requirements of mobile testing and cloud testing of users.
Description
Technical Field
The invention relates to the technical field of testing, in particular to a multi-channel vector network parameter analysis system and a multi-channel vector network parameter analysis method.
Background
The mainstream test equipment of the current network parameter is a desktop vector network analyzer, a CPU of the current network parameter adopts a high-performance embedded computer module supporting Windows, a Windows operating system is operated, the whole instrument looks like a computer capable of measuring, and the system software of the network instrument is a standard Windows application program. The measuring instrument with the structure is large in size, high in self weight, not easy to move and high in requirement on a testing environment.
How to provide a vector network parameter analysis system which is small, light, convenient to control, movable and capable of being remotely controlled and tested is a problem to be solved urgently at present.
Disclosure of Invention
The invention provides a multi-channel vector network parameter analysis system and method, which solve the problems of large volume, high self weight and difficulty in moving of the conventional desktop vector network analyzer.
The technical scheme of the invention is realized as follows:
a multi-channel network parameter analysis system, comprising: the interface control and digital processing board is in butt joint with the service application program through different channel interfaces, and the signal generation and receiving processing device is connected with the tested equipment through a test port;
the interface control and digital processing board comprises a channel data analysis module, the channel data analysis module interacts with a communication module of a service application program to complete parameter setting and original data interaction between the analysis system and the service application program, and therefore a complete vector network analyzer system is formed.
Optionally, the channel data parsing module and the service application program interaction process includes:
when the service application program is started, firstly, the channels are detected in an installation sequence, and a network instrument provides a detection sequence interface or a communication channel designated by a user;
the service application program opens a designated channel and carries out communication test, when receiving a user measurement command, the service application program packages information required by network instrument measurement into network instrument environment variables, writes the network instrument environment variables into the analysis system through the communication module, and simultaneously reads and displays a test result of the analysis system after processing;
the communication module marks the measurement data of the network instrument according to the type of the read-write data, and the measurement data is directly sent;
the read-write program determines whether to adopt a serial communication mode or a network communication mode according to the current channel;
the analysis system receives the data and then processes the data by the channel analysis module, and returns the result to the communication module.
Optionally, the workflow of the channel data parsing module includes:
after power-on reset, the channel data analysis module automatically detects a current communication channel, then starts a corresponding data monitoring thread, analyzes the received first group of data after monitoring the data, and judges which channel is adopted for communication at present according to the data content; when input data is detected subsequently, firstly, judging whether the data is network analysis system data, if so, analyzing the data, starting a decoding thread according to an address and data contained in the data, if so, storing the data, if so, starting a channel data sending thread, and controlling an output data pin to output network instrument data of a specified address; and if the test data is module test data, sending the test data to the data output pin according to the test command.
Optionally, the channel data receiving and sending thread sends/receives data to the channel data receiving and sending pin according to the channel rate, the data bit number, and the total data length, and includes the following steps:
step one, judging whether the signal data is valid, if so, performing step two;
step two, shifting storage/sending received data, and adding 1 to the shifting count;
step three, judging whether the shift count is equal to the number of data bits, if not, entering the step two, and if so, entering the step four;
step four, adding 1 to the data buffer pointer, and adding 1 to the length count;
and step five, judging whether the length counting is equal to the total data length, if not, entering the step two, and if so, entering the step one.
Optionally, the control program of the analysis system is divided into four layers according to functions: a physical layer, a data link layer, a thing layer, an application layer;
the physical layer realizes interface mapping between the FPGA and each device of the analysis system and carries out decoding analysis on communication data of each channel;
the data link layer checks the communication data of each channel and ensures the correctness of the communication data of the channels;
the object layer realizes the functions of reading, writing and controlling each bit width of channel data;
the application layer analyzes and analyzes the system control words and receives and distributes data to the object layer, and finally controls hardware output.
The invention also provides a multi-channel network parameter analysis method, which comprises the following steps: the interface control and digital processing board is in butt joint with the service application program through different channel interfaces, and the signal generating and receiving processing device is connected with the tested equipment through a test port;
the interface control and digital processing board comprises a channel data analysis module, the channel data analysis module interacts with a communication module of a service application program to complete parameter setting and original data interaction between the analysis system and the service application program, and therefore a complete vector network analyzer system is formed.
Optionally, when the service application program is started, the channels are detected in the installation sequence, and the network instrument provides a detection sequence interface or a communication channel designated by a user;
the service application program opens a designated channel and carries out communication test, when receiving a user measurement command, the service application program packages information required by network instrument measurement into network instrument environment variables, writes the network instrument environment variables into the analysis system through the communication module, and simultaneously reads and displays a test result of the analysis system after processing;
the communication module marks the measurement data of the network instrument according to the type of the read-write data, and the measurement data is directly sent;
the read-write program determines whether to adopt a serial communication mode or a network communication mode according to the current channel;
the analysis system receives the data and then processes the data by the channel analysis module, and returns the result to the communication module.
Optionally, the workflow of the channel data parsing module includes:
after power-on reset, the channel data analysis module automatically detects a current communication channel, then starts a corresponding data monitoring thread, analyzes the received first group of data after monitoring the data, and judges which channel is adopted for communication at present according to the data content; when input data is detected subsequently, firstly, judging whether the input data is analysis system data, if so, analyzing the data, starting a decoding thread according to an address and data contained in the data, if so, storing the data, and if so, starting a channel data sending thread, and controlling an output data pin to output network instrument data of a specified address; and if the test data is module test data, sending the test data to the data output pin according to the test command.
Optionally, the channel data receiving and sending thread sends/receives data to the channel data receiving and sending pin according to the channel rate, the data bit number, and the total data length, and includes the following steps:
step one, judging whether the signal data is valid, if so, performing step two;
step two, shifting storage/sending received data, and adding 1 to the shifting count;
step three, judging whether the shift count is equal to the number of data bits, if not, entering the step two, and if so, entering the step four;
step four, adding 1 to the data buffer pointer, and adding 1 to the length count;
and step five, judging whether the length counting is equal to the total data length, if not, entering the step two, and if so, entering the step one.
Optionally, the control program is divided into four layers according to functions: a physical layer, a data link layer, a thing layer, an application layer;
the physical layer realizes interface mapping between the FPGA and each device of the analysis system and carries out decoding analysis on communication data of each channel;
the data link layer checks the communication data of each channel and ensures the correctness of the communication data of the channels;
the object layer realizes the functions of reading, writing and controlling each bit width of channel data;
the application layer analyzes and analyzes the system control words and receives and distributes data to the object layer, and finally controls hardware output.
The invention has the beneficial effects that:
(1) the universal serial bus is converted into an Ethernet, WiFi and 4G network interface module and a universal serial bus control chip, so that a multi-channel interface mode of a vector network parameter analysis system is realized, the mobility and modularization of a network analyzer are realized, and the functions of remote testing and cloud testing are added, so that the network analyzer can meet the requirements of user mobility testing and cloud testing at the same time;
(2) the application of the universal serial interface enables a user to develop a user-defined service application program, and lays a foundation for the expanding application of the vector network analyzer in other fields.
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 drawings without creative efforts.
FIG. 1 is a general block diagram of a multi-channel vector network parameter analysis system of the present invention;
FIG. 2 is a control block diagram of the interface control and digital processing board of the present invention;
FIG. 3 is a flow chart of the interaction of the channel data parsing module and the service application of the present invention;
FIG. 4 is a flow chart of the operation of the channel data parsing module of the present invention;
FIG. 5 is a flowchart of the channel data receive and transmit thread work of the present invention;
fig. 6 is a system block diagram of a control procedure of the multi-channel network parameter analysis system of the present invention. .
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.
The invention provides a small, exquisite and flexible multi-channel network parameter analysis system and method, and provides a plurality of communication modes based on a serial bus, so that the system is suitable for short-distance testing and can complete the testing function of vector network parameters in a cloud testing mode through a wired network and a wireless network, and the system is compatible with the traditional vector network analysis. And the measurement application scene of the vector network analyzer is expanded to mobile test and cloud test while the measurement function of the analyzer is realized.
As shown in fig. 1, the multi-channel network parameter analysis system of the present invention includes: the system comprises an interface control and digital processing board and a signal generating and receiving processing device, wherein the interface control and digital processing board is in butt joint with a service application program through different channel interfaces, the service application program and an analyzer device form a complete vector network analyzer together through interfaces such as a wired network, a wireless network and a universal serial bus, and the signal generating and receiving processing device is connected with a tested Device (DUT) through a test port.
The channel interfaces of the interface control and digital processing board support an Ethernet connection mode, a WiFi interconnection mode, a 4G/3G/2G network connection mode and a universal serial bus interconnection mode, the channel interfaces can exist at the same time or only one interface, the service application program provides a user configuration interface to select a communication channel of the analysis system, and whether the corresponding channels exist or not can be detected in sequence according to a user designated sequence.
As shown in FIG. 2, the interface control and digital processing board adopts the USB interface communication function of the USB interface control chip, preferably the FX3 chip of Cypress company as the USB interface; a general processing interface (GPIFII interface of FX3 chip) of the universal serial bus interface control chip is connected with the FPGA, and the signal generating and receiving processing device board is accessed through the FPGA; the SPI-LAN and SPI-4G, SPI-WiFi modules are universal modules on the market, the channel data analysis module is an analysis program designed according to the test characteristics of the network analyzer, and analyzes handshake information of a serial bus converted into LAN, converted into WiFi and converted into 4G network, parameter setting of an analysis system and original data information, so that the communication requirements of the vector network analyzer are met by universal serial port interaction. The channel data analysis module of the analysis system interacts with the communication module of the service application program to complete parameter setting and original data interaction between the analysis system and the service application program, so that a complete vector network analyzer system is formed.
Fig. 3 shows an interaction process between the channel data analysis module and the service application, when the service application is started, the channels are first detected in an installation order, the network device provides a detection order interface, and a user can also designate a communication channel. The service application program opens the appointed channel and carries out communication test, when receiving a user measurement command, the service application program packages necessary information such as frequency, point number, medium frequency bandwidth, time delay and the like required by the network instrument measurement into network instrument environment variables, writes the network instrument environment variables into the analysis system through the communication module, and simultaneously reads and displays a test result of the analysis system after processing. The communication module marks the measurement data of the network instrument according to the type of the read-write data, and the measurement data is directly sent; the read-write program determines whether to adopt a serial communication mode or a network communication mode according to the current channel. In order to facilitate the expansion of the channel communication mode, the read-write function of the communication module is transparent to the application program, and an expansion interface is reserved. The analysis system receives the data and then processes the data by the channel analysis module, and returns the result to the communication module.
The working principle of the channel data analysis module is as shown in fig. 4, after power-on reset, the channel data analysis module automatically detects the current communication channel at first, then starts the corresponding data monitoring thread, analyzes the received first group of data after monitoring the data, and judges which channel is adopted for communication at present according to the data content; when input data is detected subsequently, firstly, judging whether the data is network analysis system data, if so, analyzing the data, starting a decoding thread according to an address and data contained in the data, if so, storing the data, if so, starting a channel data sending thread, and controlling an output data pin to output network instrument data of a specified address; and if the test data is module test data, sending the test data to the data output pin according to the test command.
The operation principle of the channel data receiving and transmitting thread for transmitting/receiving data to the channel data receiving and data transmitting pin according to the channel rate, the data bit number and the total data length is shown in fig. 5, and the operation principle comprises the following steps:
step one, judging whether the signal data is valid, if so, performing step two;
step two, shifting storage/sending received data, and adding 1 to the shifting count;
step three, judging whether the shift count is equal to the number of data bits, if not, entering the step two, and if so, entering the step four;
step four, adding 1 to the data buffer pointer, and adding 1 to the length count;
and step five, judging whether the length counting is equal to the total data length, if not, entering the step two, and if so, entering the step one.
And the decoding thread writes the data into the corresponding address or sends the data stored in the corresponding address to the main control computer through a channel data sending thread.
As shown in fig. 6, the control program of the multi-channel network parameter analysis system of the present invention is divided into four layers according to functions: physical layer, data link layer, transaction layer, application layer. The physical layer realizes interface mapping between the FPGA and each device of the analysis system and carries out decoding analysis on communication data of each channel; the data link layer checks the communication data of each channel and ensures the correctness of the communication data of the channels; the object layer realizes the functions of reading, writing and controlling each bit width of channel data; the application layer analyzes and analyzes the system control words and receives and distributes data to the object layer, and finally controls hardware output. When the service application program is connected with the analysis system through the Ethernet channel and the WiFi channel, the service application program and the analysis system form a local area network, and interaction is carried out through a local area network protocol; when the two are connected through a serial bus, the analysis system is used as a standard USB device to interact with a controller where a service application program is located; when the two modules communicate through DTU modules such as 4G/3G/2G, a service application program can be arranged at the cloud end and directly interacts with an analysis system as a cloud server; the service application and the analysis system can also be made to have interactive access in a pass-through cloud mode.
The multi-channel network parameter analysis system realized by the method can realize flexible plug-and-play network parameter analysis and networked vector network parameter analysis of remote test and cloud test, so that the vector network analyzer equipment has the capability of mobile test and cloud test.
The software architecture of the multi-channel network parameter analysis system can also conveniently expand the interface between the analysis system and the service application program, and provides a good program control interface for future upgrading and user-defined development.
The invention also provides a multichannel network parameter analysis method, the working principle of which is the same as that of the analysis system, and the description is omitted.
The invention utilizes the universal serial bus to be converted into the Ethernet, WiFi and 4G network interface module and the universal serial bus control chip to realize the multi-channel interface mode of the vector network parameter analysis system, thereby not only realizing the mobility and modularization of the network analyzer, but also increasing the functions of remote testing and cloud testing, and leading the network analyzer to simultaneously meet the requirements of user mobile testing and cloud testing. The application of the universal serial interface enables a user to develop a user-defined service application program, and lays a foundation for the expanding application of the vector network analyzer in other fields.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A multi-channel network parameter analysis system, comprising: the interface control and digital processing board is in butt joint with the service application program through different channel interfaces, and the signal generation and receiving processing device is connected with the tested equipment through a test port;
the interface control and digital processing board comprises a channel data analysis module, the channel data analysis module interacts with a communication module of a service application program to complete parameter setting and original data interaction between an analysis system and the service application program, so that a complete vector network analyzer system is formed;
the work flow of the channel data analysis module comprises the following steps:
after power-on reset, the channel data analysis module automatically detects a current communication channel, then starts a corresponding data monitoring thread, analyzes the received first group of data after monitoring the data, and judges which channel is adopted for communication at present according to the data content; when input data is detected subsequently, firstly, judging whether the input data is system data or not, if so, analyzing the data, starting a decoding thread according to an address and data contained in the data, if so, storing the data, if so, starting a channel data sending thread, and controlling an output data pin to output vector network analyzer data of a specified address; if the test data is module test data, sending the test data to a data output pin according to the test command;
the channel data analysis module and the service application program interaction process comprises the following steps:
when the service application program is started, firstly, the channels are detected in an installation sequence, and a vector network analyzer provides a detection sequence interface or a communication channel designated by a user;
the service application program opens an appointed channel and carries out communication test, when receiving a user measurement command, information required by measurement of the vector network analyzer is packaged into vector network analyzer environment variables which are written into the analysis system through the communication module, and simultaneously, a test result of the analysis system is read and processed and then displayed;
the communication module marks the measurement data of the vector network analyzer according to the type of the read-write data, and the measurement data is directly sent;
the read-write program determines whether to adopt a serial communication mode or a network communication mode according to the current channel;
the analysis system receives the data and then processes the data by the channel data analysis module, and returns the result to the communication module.
2. The multi-channel network parameter analysis system of claim 1,
the data receiving and sending thread of the channel sends/receives data to the channel data receiving and data sending pins according to the channel rate, the data bit number and the total data length, and comprises the following steps:
step one, judging whether the signal data is valid, if so, performing step two;
step two, shifting storage/sending received data, and adding 1 to the shifting count;
step three, judging whether the shift count is equal to the number of data bits, if not, entering the step two, and if so, entering the step four;
step four, adding 1 to the data buffer pointer, and adding 1 to the length count;
and step five, judging whether the length counting is equal to the total data length, if not, entering the step two, and if so, entering the step one.
3. The multi-channel network parameter analysis system of claim 1,
the control program of the analysis system is divided into four layers according to functions: a physical layer, a data link layer, a thing layer, an application layer;
the physical layer realizes interface mapping between the FPGA and each device of the analysis system and carries out decoding analysis on communication data of each channel;
the data link layer checks the communication data of each channel and ensures the correctness of the communication data of the channels;
the object layer realizes the functions of reading, writing and controlling each bit width of channel data;
the application layer analyzes and analyzes the system control words and receives and distributes data to the object layer, and finally controls hardware output.
4. A multi-channel network parameter analysis method is characterized by comprising the following steps: the interface control and digital processing board is in butt joint with the service application program through different channel interfaces, and the signal generating and receiving processing device is connected with the tested equipment through a test port;
the interface control and digital processing board comprises a channel data analysis module, the channel data analysis module interacts with a communication module of a service application program to complete parameter setting and original data interaction between an analysis system and the service application program, so that a complete vector network analyzer system is formed;
the work flow of the channel data analysis module comprises the following steps:
after power-on reset, the channel data analysis module automatically detects a current communication channel, then starts a corresponding data monitoring thread, analyzes the received first group of data after monitoring the data, and judges which channel is adopted for communication at present according to the data content; when input data is detected subsequently, firstly, judging whether the input data is system data or not, if so, analyzing the data, starting a decoding thread according to an address and data contained in the data, if so, storing the data, if so, starting a channel data sending thread, and controlling an output data pin to output vector network analyzer data of a specified address; if the test data is module test data, sending the test data to a data output pin according to the test command;
when the service application program is started, firstly, the channels are detected in an installation sequence, and a vector network analyzer provides a detection sequence interface or a communication channel designated by a user;
the service application program opens an appointed channel and carries out communication test, when receiving a user measurement command, information required by measurement of the vector network analyzer is packaged into vector network analyzer environment variables which are written into the analysis system through the communication module, and simultaneously, a test result of the analysis system is read and processed and then displayed;
the communication module marks the measurement data of the vector network analyzer according to the type of the read-write data, and the measurement data is directly sent;
the read-write program determines whether to adopt a serial communication mode or a network communication mode according to the current channel;
the analysis system receives the data and then processes the data by the channel data analysis module, and returns the result to the communication module.
5. The multi-channel network parameter analysis method of claim 4,
the data receiving and sending thread of the channel sends/receives data to the channel data receiving and data sending pins according to the channel rate, the data bit number and the total data length, and comprises the following steps:
step one, judging whether the signal data is valid, if so, performing step two;
step two, shifting storage/sending received data, and adding 1 to the shifting count;
step three, judging whether the shift count is equal to the number of data bits, if not, entering the step two, and if so, entering the step four;
step four, adding 1 to the data buffer pointer, and adding 1 to the length count;
and step five, judging whether the length counting is equal to the total data length, if not, entering the step two, and if so, entering the step one.
6. The multi-channel network parameter analysis method of claim 4,
the control program is divided into four layers according to functions: a physical layer, a data link layer, a thing layer, an application layer;
the physical layer realizes interface mapping between the FPGA and each device of the analysis system and carries out decoding analysis on communication data of each channel;
the data link layer checks the communication data of each channel and ensures the correctness of the communication data of the channels;
the object layer realizes the functions of reading, writing and controlling each bit width of channel data;
the application layer analyzes and analyzes the system control words and receives and distributes data to the object layer, and finally controls hardware output.
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