CN103592996B - A kind of structure of card insert type multichannel function/arbitrary waveform generator and device - Google Patents
A kind of structure of card insert type multichannel function/arbitrary waveform generator and device Download PDFInfo
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- CN103592996B CN103592996B CN201210286925.8A CN201210286925A CN103592996B CN 103592996 B CN103592996 B CN 103592996B CN 201210286925 A CN201210286925 A CN 201210286925A CN 103592996 B CN103592996 B CN 103592996B
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Abstract
A kind of structure of card insert type multichannel function/arbitrary waveform generator and device, ＆ Bus isolation system and waveform is driven to generate system and form by panel control system, main controller system, clock, panel control system includes front panel control, digital encoding switch, keyboard etc.；Main controller system includes master controller, RS 232, USB, lan interfaces, Chu Moping ＆LCD, digital output interface, GPIB, memorizer and interface；Clock drives ＆ Bus isolation system to include clock driving, universal serial bus and n Bus isolation unit；Waveform generates function/arbitrary waveform generator plug-in card unit, n expansion slot and the n address setting circuit that system includes n passage；Function/arbitrary waveform generator plug-in card unit includes waveform and generates ＆ control, DAC and filtering ＆ signal conditioning circuit；Panel control system, universal serial bus, main controller system, clock drive ＆ Bus isolation system and waveform to generate systematic order and connect.
Description
Technical field
A kind of structure of card insert type multichannel function/arbitrary waveform generator disclosed by the invention and device, it is described
A kind of card insert type multichannel function/arbitrary waveform generator, is related to electronic measuring instrument field and in particular to waveform generator.
Background technology
A kind of structure of card insert type multichannel function/arbitrary waveform generator disclosed by the invention and device are it is intended to solve
Multichannel function/arbitrary waveform generator complex structure problem, for the digital and analog circuit in each channel circuit plug-in card
There is circuit structure and the identical feature of parameter, the serial that multiple plug-in cards are hung over an one master and multiple slaves structure by the present invention is total
On line, multiple or inserting of refering in particular to is accessed by the address code that a controller passes through to send the command frame containing flag bit and expansion slot
Card, due to structure and the device of card insert type multichannel function/arbitrary waveform generator of the present invention, is different from PXI or VXI
Cabinet card insert type complex bus instrument, is different from one-board multichannel function/arbitrary waveform generator again, have simple for structure,
Clearly it is easy to the distinguishing feature of extension, reduce noise jamming and the difficulty of circuit technology wiring simultaneously.
Content of the invention
A kind of structure of card insert type multichannel function/arbitrary waveform generator disclosed by the invention and device, described one
Plant card insert type multichannel function/arbitrary waveform generator to be made up of four systemses module, they are panel control system modules
（100）, main controller system module（200）, clock drive ＆ Bus isolation system module（400）Generate system module with waveform
（300）, wherein, described panel control system module includes：Front panel control circuit, digital coding on-off circuit, keyboard
Circuit and LED indicating circuit；Described main controller system module includes：Main controller circuit, RS-232 interface circuit, USB
Interface circuit, local area network interface circuit LAN, Chu Moping ＆LCD circuit, digital output interface circuit, gpib interface circuit, storage
Device and interface circuit, mouse interface circuit and crystal oscillating circuit；Described clock drives ＆ Bus isolation system module to include：Contain
The n Bus isolation unit of the clock driver cell of one temperature compensating crystal oscillator, universal serial bus and serial number 1# ~ n#；Described ripple
Shape generates system module and includes：The function/arbitrary waveform generator plug-in card unit of the n passage of serial number 1# ~ n#, n plug-in card
Expansion slot and n expansion slot address setting circuit；Described function/arbitrary waveform generator plug-in card unit includes：Waveform generates ＆
Control circuit, DAC-circuit and filtering ＆ signal conditioning circuit；It is characterized in that：Panel control system module（100）, universal serial bus
（500）, main controller system module（200）, clock drive ＆ Bus isolation system module（400）Generate system module with waveform
（300）It is linked in sequence.
Described universal serial bus it is characterised in that：Can be that synchronous serial bus can also be asynchronous serial bus.
Described Bus isolation unit it is characterised in that：Universal serial bus（410）For the serial communication bus of one master and multiple slaves,
Buses isolator unit is the device of non-electrical couplings.
The function/arbitrary waveform generator plug-in card unit of the n passage of described serial number 1# ~ n# it is characterised in that：Respectively
The function/arbitrary waveform generator plug-in card unit of individual passage has identical electrical structure, electric parameter and physical dimension.
N described function/arbitrary waveform generator plug-in card unit is suspended to a universal serial bus by corresponding expansion slot
BUS_COM upper it is characterised in that：Require total to each expansion slot again by isolator from master controller bus port in technique
Each signal line of line end mouth is isometric.
Described clock drive ＆ Bus isolation system module it is characterised in that：Described universal serial bus（410）Can be
Serial Peripheral Interface (SPI)（Serial Peripheral Interface, is abbreviated as SPI）Four-wire system bus, gives up NSS, using it
In three holding wires, a serial time clock line SCLK, for synchronized transmission and receiving data；A piece MOSI line, for sending
Synchronous serial data；A piece MISO line, for receiving synchronous serial data；Corresponding Bus isolation unit is also held using three
Mouthful.
A kind of described card insert type multichannel function/arbitrary waveform generator it is characterised in that：Master controller is to n letter
Number/AWG (Arbitrary Waveform Generator) waveform plug-in card unit（301、302、303、……、30n）It is provided with a group in the command frame sending
Send out/single-shot mark and press n=2^a rule arrange a bit function/AWG (Arbitrary Waveform Generator) plug-in card unit address code mark, right
The command frame sending in certain, each function/arbitrary waveform generator waveform plug-in card unit receive command frame first to mass-sending/
Single-shot flag bit is judged, or execution mass-sending function or execution single-shot function；If single-shot function is then by a position in command frame
Single-shot mark is compared with the address code of this plate plug-in card expansion slot initialization circuit, if unanimously, can confirm that be destined to this function/appoint
The single-shot order of meaning waveform generator waveform plug-in card unit is simultaneously executed, and other plug-in cards then do not execute any operation.
A kind of above-mentioned structure of card insert type multichannel function/arbitrary waveform generator and device set fully according to modularity
Meter principle design, circuit structure is simple, compact, clear, reduces power consumption simultaneously, reduces wiring difficulty, particularly in passage
Number is more, and the occasion of such as port number n >=4 is very considerable.
Brief description
Accompanying drawing 1 is the structure diagram of the present invention, and wherein numbering 100 is panel control system module, and numbering 200 is main control
Device system module, numbering 300 is that waveform generates system module, and numbering 400 is that clock drives ＆ Bus isolation system module, numbering
500 is universal serial bus.
Accompanying drawing 2 is a kind of structure and the device of card insert type multichannel function/arbitrary waveform generator of the present invention
Structured flowchart, numbering 100 is panel control system module, and wherein, 100_1 is front panel control circuit, and 100_2 is that numeral is compiled
Code switch circuit, 100_3 is keyboard circuit, and 100_4 is LED indicating circuit；Numbering 500 is panel control system module and master control
The universal serial bus BUS_ITF that device system module processed connects；Numbering 200 is main controller system module, and wherein, 200_1 is master control
Device circuit processed, 200_2 is RS-232 interface circuit, and 200_3 is usb bus interface circuit, and 200_4 is network interface circuit
LAN, 200_5 are Chu Moping ＆LCD circuit, and 200_6 is digital output interface circuit, and 200_7 is gpib interface circuit, and 200_8 is
Memorizer and interface circuit, 200_9 is mouse interface circuit, 200_10 crystal oscillating circuit；Numbering 300 is that waveform generates system mould
Block, wherein, 301,302,303 ..., 30n be respectively serial number 1#, 2#, 3# ..., the ripple of the function of the n passage of n#/arbitrarily
Shape generator plug-in card unit；Wherein, 301_2,302_2,303_2 and 30n_2 are that n function/arbitrary waveform generator is inserted respectively
Waveform in card unit generates ＆ control circuit, 301_3,302_3,303_3 ..., 30n_3 be n function/any ripple respectively
Digital/analog converter in shape generator plug-in card unit（DAC）Circuit, 301_4,302_4,303_4 ..., 30n_4 is respectively
The filtering ＆ signal conditioning circuit in n function/arbitrary waveform generator plug-in card unit, 301_1,302_1,303_1 ...,
30n_1 is n plug-in card expansion slot respectively, 301_5,302_5,303_5 ..., and 30n_5 is that the address of n expansion slot sets respectively
Circuit, 301_6,302_6,303_6 ..., 30n_6 be n passage output wave voltage signal；Numbering 400 is clock
Drive ＆ Bus isolation system module, wherein, 400_1 is clock driver cell, 401,402,403 ..., 40n be sequence number respectively
For 1#, 2#, 3# ..., the n Bus isolation unit of n#, 410 is serial communication bus.
Accompanying drawing 3 is the structure chart merging panel control system module with main controller system module.
Accompanying drawing 4 is a kind of crystal oscillator drive circuit.
Accompanying drawing 5 is Bus isolation unit connection diagram during three-wire system bus SPI.
Accompanying drawing 6 is a kind of wiring diagram of embodiment of address setting circuit.
Accompanying drawing 7 is the flag bit schematic diagram that the command frame that master controller sends shows.
Accompanying drawing 8 is the workflow diagram that master controller accesses n passage function/arbitrary waveform generator plug-in card unit.
Specific embodiment
Of the present inventionA kind ofThe implementing of the structure of card insert type multichannel function/arbitrary waveform generator and device
Program profile is as follows：
Each system module, functional unit and circuit be embodied as example
（One）, panel control system module
Scheme（1）Described panel control system module can include front panel control circuit, keyboard circuit, numeral
Formula coding adjusts on-off circuit and LED indicating circuit, also dependent on specifically needing to increase and decrease；Front panel control circuit is used for monitoring
Keyboard circuit, the action of digital coding on-off circuit, are sent to main controller circuit after analysis, or receive what master controller sent
Control information lights the corresponding LED light of front panel, completes the information exchange with main controller circuit；Front panel control can
Select disposal ability and the relatively low microprocessor of arithmetic speed, such as 51 single-chip microcomputers, AVR single chip, PIC single chip microcomputer or
Arm processor etc., also optional CPLD chip complete.
Scheme（2）Panel control system module can also be incorporated to main controller system module, front panel control circuit
Function is completed in the lump by main controller circuit, as shown in Figure 3.
With the continuous decline of microprocessor price, panel control system module and primary processor control system module are divided
The scheme opened, is realized main controller system module by bus and is interacted with panel control system module information, more meet modularity
The requirement of design.Here bus can be SPI universal serial bus or UART universal serial bus, can also be that I2C serial is total
Line.
（Two）, main controller system module
Described main controller system module includes：Main controller circuit, crystal oscillating circuit, RS-232 interface circuit, USB connect
Mouth circuit, local area network interface circuit LAN, Chu Moping ＆LCD circuit, digital output interface circuit, gpib interface circuit, memorizer
And interface circuit and mouse interface circuit, much broadly fall into option, can increase and decrease according to demand, for example, increase SD card, or increase
Subtract the capacity of memorizer or accepted or rejected.
1st, main controller circuit
Main controller circuit is typically realized by microprocessor, can be from dsp processor, arm processor, single-chip microcomputer, cruel
Farsighted CPU and interface or PC104 plate etc., for the spirit no essential distinction of the present invention.For example select SAMSING company
Arm processor S3C2410/2440A, STM32F10X/20X/40X of also optional hundred million method companies etc. microprocessor.
2nd, master controller effect in systems
In conjunction with figure attached 2, main controller system module one side passes through universal serial bus BUS_ITF and panel control system module
In front panel control circuit complete information exchange, by the technical specification information such as the type of waveform of user input, waveform parameter
Analyzed, generated the register command that waveform in access function/AWG (Arbitrary Waveform Generator) plug-in card unit generates control circuit；
On the other hand according to family order by the resource of system（The information such as such as Wave data）It is sent to function/arbitrary waveform generator to insert
Waveform in card unit generates ＆ control circuit, finally makes function/arbitrary waveform generator export the waveform that user requires；Master control
Device processed also monitors the input action of touch screen and is analyzed and execute corresponding operating, including complete refresh LCD display interface
The operation of figure.
（Three）, universal serial bus
Described universal serial bus refers to connect the universal serial bus of panel control system module and main controller system module, can
Using UART or spi bus.
（Four）, clock drive ＆ Bus isolation system module
1st, clock and clock drive
Scheme（1）Waveform generates system module and is used alone a crystal oscillator：The higher function of precision prescribed and stability/
AWG (Arbitrary Waveform Generator), its waveform generates system module and uses temperature compensating crystal oscillator, for improving load capacity, plus driving chip, here
Using the driving chip MAX9120 of MAX company, its wiring diagram is as shown in Figure 4.
Scheme（2）Whole instrument uses a crystal oscillator：Now cancel the crystal oscillator of master controller（200_10）, by 400_1
Crystal oscillator complete, the phaselocked loop within master controller（PLL）The dominant frequency of adjustment master controller.
2nd, Bus isolation unit
Bus isolation unit in described Bus isolation system module is typically hanked product digital isolator chip, for example beautiful
AD company of state adopts ADuM1401 chip of magnetizing mediums isolation etc..Described universal serial bus can be synchronous serial bus, also may be used
To be asynchronous serial bus, concrete scheme is exemplified below：
Scheme（1）Using spi bus：Spi bus are four-wire system synchronous serial bus, the present invention give up NSS signal without,
Only use tri- lines of SCLK, MOSI, MISO（In conjunction with accompanying drawing 2 or 3, x=3）, using spi bus and isolator ADuM1401 chip
Scheme wiring diagram as shown in Figure 5.The host processor chip that one side joint of ADuM1401 chip is connected with BUS_COM bus
Spi bus port SCLK_COM, MOSI_COM and MISO_COM signal, the power supply+3.3DVDD_0 that chip uses and ground DGND_0
Share with main processor circuit；The waveform that another side joint of chip is connected with BUS_i bus generates each plug-in card in system unit
Expansion slot draw holding wire SCLK_i, MOSI_i, MISO_i, i=1 here, 2 ..., n, the power supply+3.3DVDD_i of chip and
Ground DGND_i shares a set of power supply with corresponding plug-in card.
Scheme（2）Using UART bus：UART bus is Asynchronous Reception/transmission bus, using 2 (x=2) holding wires, that is,
RXD and TXD holding wire, because UART bus speed is low compared with SPI, it is possible to use optocoupler is as isolating device, such as FAIRCHILD
The 6N137 opto-coupler chip of company, seldom repeats herein.
Scheme（3）Using USART universal serial bus：USART universal serial bus has synchronization and asynchronous system.Asynchronous system and UART
Bus is the same, and the method for synchronization will add a synchronised clock line, and here is omitted.
（Five）, waveform generate system module
A kind of structure of card insert type multichannel function/arbitrary waveform generator of the present invention and device, its waveform is given birth to
System module is become to employ the function/arbitrary waveform generator plug-in card unit of n=4 passage, the number of plug-in card can be according to user couple
The number of channels demand that signal produces is determining.Can select between 1 ~ n block, very big n is theoretical value, actually will consider total
, to the factors such as signal impedance coupling of each plug-in card, n≤4 may be optimal, n for the load capacity of line and isolator>4 is this
Signalling channel is required excessive occasion then can consider to be solved more preferably with the method for multiple stage instrument cascade.
Described waveform generates the nucleus module that system module is function/arbitrary waveform generator system, generally comprises ripple
Shape generates ＆ control circuit, DAC-circuit and signal conditioning circuit；
1st, waveform generates ＆ control circuit
Waveform generates the core that ＆ control circuit is function/arbitrary waveform generator plug-in card unit again.Waveform generates ＆ and controls
The concrete internal structure of circuit can determine to demands such as signal types according to user, for example, use direct digital synthesis technique
（DDS）Method.Described waveform generates ＆ control circuit and can also generate impulse wave, triangular wave, square wave etc., more characteristic also
Waveform and any ripple by instrument system software editing that the waveform that can be generated by function or touch screen interface draw.
Described waveform generates ＆ control unit can be by a piece of field programmable gate array（FPGA）Chip is realized, described
FPGA can be Xilinx company produce or the production such as altera corp chip, no substantive for the present invention
Property difference.
2nd, DAC-circuit
DAC-circuit can determine to indexs such as the frequency of output waveform, precision according to user, such as AD company
The D/A converter chip such as AD9736, AD9755, AD9747.
3rd, filter ＆ signal conditioning circuit
Filtering ＆ signal conditioning circuit is the indispensable circuit block of analog output signal generating.Can be according to output letter
Number type selecting switching using different wave filter；The type also according to output signal for the signal condition, the frequency of output signal
Determine with technical specifications such as amplitudes.
4th, address setting circuit
Described address setting circuit, this address setting circuit scheme contains 2 resistance R0, R1 taking four-way as a example, it
One end welding wave generate the input port of ＆ control unit circuit；Another termination power or ground, generate 00,01,10,11 4
Plant coding, be that the address code that four expansion slot set uses for plug-in card Address Recognition.Function/random waveform that the present invention is given is sent out
The structure of raw device and device are that each passage is mutually isolated, four passages are then needed to the power supply of four groups of independences, accompanying drawing 6 institute
The four groups of power supplys showing are：+ 3.3DVDD_1 and DGND_1 ,+3.3DVDD_2 and DGND_2 ,+3.3DVDD_3 and DGND_3 and+
3.3DVDD_4 and DGND_4.
A kind of described structure of card insert type multichannel function/arbitrary waveform generator and device it is characterised in that：With four
As a example passage function/arbitrary waveform generator, referring to Fig. 7, master controller is to function/arbitrary waveform generator waveform plug-in card unit
Mass-sending/single-shot flag bit the Bit_i+1 being provided with the command frame sending, is mass-sending as Bit_i+1=1；Bit_i+1=0 is single
Send out, mass-sending is to send same order data, Suo Youhan to n function/arbitrary waveform generator waveform plug-in card unit simultaneously
Number/AWG (Arbitrary Waveform Generator) waveform plug-in card unit receives and during command frame, Bit_i+1 position is judged, Bit_i+1=1 executes
Mass-sending function；Bit_i+1=0 then will continue flag bit Bit_i and Bit_i-1 is judged, Bit_i Bit_i-1 value
For 00,01,10,11 4, corresponding with the address setting code of the address setting circuit of four expansion slot, all functions/any ripple
After shape generator waveform plug-in card unit receives command frame, only one of which function/arbitrary waveform generator waveform plug-in card list
Unit is consistent with Bit_i Bit_i-1 value, thus confirming to be destined to the order of this plug-in card and executed, other plug-in cards are then
Do not execute any operation, accompanying drawing 8 is the workflow sending and receiving command frame.
It is embodied as example it is thus understood that only one of implementation of the present invention, not in upper described embodiment
For limiting protection scope of the present invention, within all spirit in the present invention and design principle, any change of being done, equivalent replace
Change, improve, be regarded as being included among protection scope of the present invention.
Claims (5)
1. a kind of card insert type multichannel function/arbitrary waveform generator, a kind of described card insert type multichannel function/random waveform
Generator is made up of four systemses module, including panel control system module (100), main controller system module (200), clock
＆ Bus isolation system module (400) and waveform is driven to generate system module (300)；Wherein, described panel control system module
Including：Front panel control circuit, digital coding on-off circuit, keyboard circuit and LED indicating circuit；Described master controller system
System module includes：Main controller circuit, RS-232 interface circuit, usb circuit, local area network interface circuit LAN, touch screen ＆
LCD circuit, digital output interface circuit, gpib interface circuit, memorizer and interface circuit, mouse interface circuit and crystal oscillator electricity
Road；Described clock drives ＆ Bus isolation system module to include：Clock driver cell, universal serial bus (410) and serial number 1#
The n Bus isolation unit of～n#；Described waveform generates system module and includes：The function of the n passage of serial number 1#～n#/
AWG (Arbitrary Waveform Generator) plug-in card unit, n plug-in card expansion slot and n expansion slot address setting circuit；Described function/any ripple
Shape generator plug-in card unit includes：Waveform generates ＆ control circuit, DAC-circuit and filtering ＆ signal conditioning circuit；It is characterized in that：
Panel control system module (100), universal serial bus (410), main controller system module (200), clock drive ＆ Bus isolation system
System module (400) and waveform generate system module (300) and are linked in sequence.
2. a kind of card insert type multichannel function/arbitrary waveform generator according to claim 1 it is characterised in that：Described
Universal serial bus (410) be one master and multiple slaves serial communication bus, buses isolator unit is the device of non-electrical couplings.
3. a kind of card insert type multichannel function/arbitrary waveform generator according to claim 1 it is characterised in that：Described
The n passage of serial number 1#～n# function/arbitrary waveform generator plug-in card unit, the ripple of the function of its each passage/arbitrarily
Shape generator plug-in card unit has identical electrical structure, electric parameter and physical dimension.
4. a kind of card insert type multichannel function/arbitrary waveform generator according to claim 1 it is characterised in that：Described
Universal serial bus (410) be SPI four-wire system bus, give up NSS, using three holding wires therein, a serial time clock line
SCLK, for synchronized transmission and receiving data；A piece MOSI line, for sending synchronous serial data；A piece MISO line, for connecing
Receive synchronous serial data；Corresponding Bus isolation unit is also using three ports.
5. a kind of card insert type multichannel function/arbitrary waveform generator according to claim 1 it is characterised in that：Master control
Device processed to n function/arbitrary waveform generator waveform plug-in card unit (301,302,303 ..., 30n) in the command frame that sends
It is provided with a mass-sending/single-shot mark and the ground of a bit function/AWG (Arbitrary Waveform Generator) plug-in card unit arranging by the rule of n=2^a
Location code mark, the command frame that certain is sent, all function/arbitrary waveform generator waveform plug-in card units receive command frame
First mass-sending/single-shot flag bit is judged, or execution mass-sending function or execution single-shot function；If single-shot function then will
In command frame, a position single-shot mark is compared with the address code of this plate plug-in card expansion slot initialization circuit, if unanimously, can confirm that it is to send
Single-shot order to this function/arbitrary waveform generator waveform plug-in card unit is simultaneously executed, and other plug-in cards then do not execute any
Operation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210286925.8A CN103592996B (en) | 2012-08-14 | 2012-08-14 | A kind of structure of card insert type multichannel function/arbitrary waveform generator and device |
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| CN201210286925.8A CN103592996B (en) | 2012-08-14 | 2012-08-14 | A kind of structure of card insert type multichannel function/arbitrary waveform generator and device |
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| CN103592996B true CN103592996B (en) | 2017-03-08 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105553784A (en) * | 2016-01-27 | 2016-05-04 | 哈尔滨工业大学 | Communication signal simulator |
| CN105811970B (en) * | 2016-04-21 | 2018-10-23 | 中国工程物理研究院激光聚变研究中心 | A kind of multichannel generating system |
| CN207115251U (en) * | 2017-05-26 | 2018-03-16 | 广州视源电子科技股份有限公司 | A kind of capacitance plate Intelligent flat |
| CN109557347A (en) * | 2018-11-14 | 2019-04-02 | 福建利利普光电科技有限公司 | A kind of arbitrary waveform signal generator with touch function |
| CN114691580A (en) * | 2020-12-28 | 2022-07-01 | 格科微电子（上海）有限公司 | Integrated circuit, digital circuit module, chip, camera and electronic information device |
| CN113721056A (en) * | 2021-09-06 | 2021-11-30 | 成都能通科技有限公司 | Extensible arbitrary waveform generator bottom plate |
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