CN202948359U - Plug-in multichannel function or arbitrary waveform generator structure and device - Google Patents
Plug-in multichannel function or arbitrary waveform generator structure and device Download PDFInfo
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- CN202948359U CN202948359U CN 201220399952 CN201220399952U CN202948359U CN 202948359 U CN202948359 U CN 202948359U CN 201220399952 CN201220399952 CN 201220399952 CN 201220399952 U CN201220399952 U CN 201220399952U CN 202948359 U CN202948359 U CN 202948359U
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Abstract
The utility model provides a plug-in multichannel function or arbitrary waveform generator structure and a device. The device is composed of a panel controlling system, a main controller system, a clock-driven and bus isolation system and a waveform generating system. The panel controlling system comprises a front panel controller, a digital code switch, a keyboard and the like. The main controller system comprises a main controller, a recommended standard (RS)-232, a universal serial bus (USB), a local area network interface, a touch screen and a liquid crystal display (LCD), a digital output interface, a general purpose interface bus (GPIB), a storage and an interface. The clock-driven and bus isolation system comprises a clock-driven unit, a serial bus and a plurality of bus isolation units. The waveform generating system comprises a plurality of channels of function or arbitrary waveform generator plug-in units, a plurality of expansion slots, and a plurality of address set circuits. The function or arbitrary waveform generator plug-in units comprise a waveform generating and controlling circuit, a digital analog converter (DAC) and a filter and signal conditioning circuit. The panel controlling system, the serial bus, the main controller system, the clock-driven and bus isolation system and the waveform generating system are connected in sequence.
Description
Technical field
A kind of structure and device of card insert type hyperchannel function/arbitrary waveform generator, its described card insert type hyperchannel function/arbitrary waveform generator relates to the electronic measuring instrument field, is specifically related to waveform generator.
Background technology
structure and the device of the disclosed a kind of card insert type hyperchannel function/arbitrary waveform generator of the utility model, be intended to Solving Multichannel function/arbitrary waveform generator complex structure problem, have circuit structure and the identical characteristics of parameter for the digital and analog circuit in each channel circuit plug-in card, it is many from the universal serial bus of structure that the present invention hangs over one one master with a plurality of plug-in cards, contain by transmission the plug-in card that the address code access of the command frame of zone bit and expansion slot is a plurality of or refer in particular to by a controller, structure and device due to a kind of card insert type hyperchannel function/arbitrary waveform generator described in the utility model, be different from PXI or VXI cabinet card insert type complex bus instrument, be different from again one-board hyperchannel function/arbitrary waveform generator, have simple for structure, clear, the distinguishing feature that is easy to expand, reduced simultaneously the difficulty of noise and circuit technology wiring.
Summary of the invention
Structure and the device of the disclosed a kind of card insert type hyperchannel function/arbitrary waveform generator of the utility model, described card insert type hyperchannel function/arbitrary waveform generator is comprised of the four systems module, and they are panel control system module (100), main controller system module (200), clock driving ﹠amp; Bus isolation system module (400) and waveform generation system module (300), wherein, described panel control system module comprises: front panel controller circuitry, numerical coding on-off circuit, keyboard circuit and LED indicating circuit; Described main controller system module comprises: main controller circuit, RS-232 interface circuit, usb circuit, local area network interface circuit LAN, Chu Moping ﹠amp; LCD circuit, digital output interface circuit, gpib interface circuit, storer and interface circuit, mouse interface circuit and crystal oscillating circuit; Described clock drives ﹠amp; The Bus isolation system module comprises: clock driver element, universal serial bus and the sequence number that contains a temperature compensating crystal oscillator is n the Bus isolation unit of 1#～n#; Described waveform generation system module comprises: sequence number is function/arbitrary waveform generator plug-in card unit, a n plug-in card expansion slot and n expansion slot address setting circuit of n the passage of 1#～n#; Described function/arbitrary waveform generator plug-in card unit comprises: waveform generates ﹠amp; Control circuit, DAC circuit and Lv Bo ﹠amp; Signal conditioning circuit; It is characterized in that: panel control system module (100), universal serial bus (500), main controller system module (200), clock drive ﹠amp; Bus isolation system module (400) and waveform generation system module (300) are linked in sequence.
Described universal serial bus is characterized in that: can be that synchronous serial bus can also be asynchronous serial bus.
Described Bus isolation unit is characterized in that: universal serial bus (410) be one much more main from serial communication bus, the buses isolator unit is the device of non-electrical couplings.
Described sequence number is the function/arbitrary waveform generator plug-in card unit of n the passage of 1#～n#, it is characterized in that: the function/arbitrary waveform generator plug-in card unit of each passage has identical electrical structure, electric parameter and physical dimension.
Described n function/arbitrary waveform generator plug-in card unit is suspended on a universal serial bus BUS_COM by corresponding expansion slot, it is characterized in that: require from the master controller bus port isometric to each signal line of the bus port of each expansion slot again by isolator on technique.
Described clock drives ﹠amp; The Bus isolation system module, it is characterized in that: described universal serial bus (410) can be Serial Peripheral Interface (SPI) (Serial Peripheral Interface, be abbreviated as SPI) the four-wire system bus, give up NSS, use three signal wires wherein, a serial time clock line SCLK is used for synchronized transmission and receive data; A MOSI line is used for sending synchronous serial data; A MISO line is used for receiving synchronous serial data; Corresponding Bus isolation unit also uses three ports.
described card insert type hyperchannel function/arbitrary waveform generator, it is characterized in that: master controller is to n function/arbitrary waveform generator waveform plug-in card unit (301, 302, 303, be provided with a mass-sending/single-shot sign in the command frame that 30n) sends and by the address code sign of a bit function of the rule setting of n=2^a/AWG (Arbitrary Waveform Generator) plug-in card unit, command frame for certain transmission, each function/arbitrary waveform generator waveform plug-in card unit receives command frame and at first mass-sending/single-shot zone bit is judged, or carry out the mass-sending function or carry out the single-shot function, if the single-shot function will compare the address code of a position single-shot sign in command frame and this plate plug-in card expansion slot initialization circuit, if consistent, can be confirmed to be the single-shot order that sends to this function/arbitrary waveform generator waveform plug-in card unit and be carried out, other plug-in card is not carried out any operation.
The structure of above-mentioned a kind of card insert type hyperchannel function/arbitrary waveform generator and device design according to the modular design principle fully, circuit structure is simple, compact, clear, reduced simultaneously power consumption, reduced the wiring difficulty, particularly more at port number, for example the occasion of port number n 〉=4 is very considerable.
Description of drawings
Accompanying drawing 1 is structure diagram of the present utility model, and wherein numbering 100 is panel control system modules, and numbering 200 is main controller system modules, and numbering 300 is waveform generation system modules, and numbering 400 is that clock drives ﹠amp; The Bus isolation system module, numbering 500 is universal serial bus.
Accompanying drawing 2 is the structure of a kind of card insert type hyperchannel function/arbitrary waveform generator of the present invention and the structured flowchart of device, numbering 100 is panel control system modules, wherein, 100_1 is the front panel controller circuitry, 100_2 is the numerical coding on-off circuit, 100_3 is keyboard circuit, and 100_4 is the LED indicating circuit; Numbering 500 is universal serial bus BUS_ITF that the panel control system module is connected with the main controller system module; Numbering is the main controller system module, and wherein, 200_1 is main controller circuit, and 200_2 is the RS-232 interface circuit, and 200_3 is the usb bus interface circuit, and 200_4 is network interface circuit LAN, and 200_5 is Chu Moping ﹠amp; LCD circuit, 200_6 are the digital output interface circuit, and 200_7 is the gpib interface circuit, and 200_8 is storer and interface circuit, and 200_9 is the mouse interface circuit, the 200_10 crystal oscillating circuit; Numbering 300 is waveform generation system modules, wherein, 301,302,303 ..., 30n be respectively sequence number be 1#, 2#, 3# ..., n# the function/arbitrary waveform generator plug-in card unit of n passage; Wherein, 301_2,302_2,303_2 and 30n_2 are respectively that waveform in n function/arbitrary waveform generator plug-in card unit generates ﹠amp; Control circuit, 301_3,302_3,303_3 ..., 30n3 is respectively digital/analog converter (DAC) circuit in n function/arbitrary waveform generator plug-in card unit, 301_4,302_4,303_4 ..., 30n_4 is respectively the Lv Bo ﹠amp in n function/arbitrary waveform generator plug-in card unit; Signal conditioning circuit, 301_1,302_1,303_1 ..., 30n_1 is respectively n plug-in card expansion slot, 301_5,302_5,303_5 ... 30n_5 is respectively the address setting circuit of n expansion slot, 301_6,302_6,303_6 ..., 30n_6 is the waveform voltage signal of the output of n passage; Numbering 400 is that clock drives ﹠amp; The Bus isolation system module, wherein, 400_1 is the clock driver element, 401,402,403 ..., 40n be respectively sequence number be 1#, 2#, 3# ..., n# n Bus isolation unit, the 410th, serial communication bus.
Accompanying drawing 3 is the structural drawing with panel control system module and main controller system block merging.
Accompanying drawing 4 is a kind of crystal oscillator driving circuits.
Bus isolation unit connection diagram when accompanying drawing 5 is three-wire system bus SPI.
Accompanying drawing 6 is wiring diagrams of a kind of embodiment of address setting circuit.
Accompanying drawing 7 is zone bit schematic diagram that the command frame of master controller transmission shows.
Accompanying drawing 8 is workflow diagrams of n of master controller access passage function/arbitrary waveform generator plug-in card unit.
Embodiment
The structure of a kind of card insert type hyperchannel function/arbitrary waveform generator of the present invention and the specific implementation brief introduction of device are as follows:
The concrete embodiment of each system module, functional unit and circuit
(1), panel control system module
The described panel control system module of scheme (1) can comprise front panel controller circuitry, keyboard circuit, digital encoding by-pass cock circuit and LED indicating circuit, also can increase and decrease according to specific needs; The front panel controller circuitry is used for the action of supervisory keyboard circuit, numerical coding on-off circuit, send to main controller circuit after analysis, or receive the control information that master controller sends and light the corresponding LED light of front panel, complete the information interaction with main controller circuit; The front panel controller can be selected processing power and the relatively low microprocessor of arithmetic speed, such as 51 single-chip microcomputers, AVR single-chip microcomputer, PIC single-chip microcomputer or arm processor etc., and also optional CPLD chip is completed.
Scheme (2) panel control system module can also be incorporated the main controller system module into, and the function of front panel controller circuitry is completed in the lump by main controller circuit, as shown in Figure 3.
Along with the continuous decline of microprocessor price, the scheme that panel control system module and primary processor control system module are separated, by bus realize the main controller system module and the panel control system module information mutual, more meet the requirement of modular design.The bus here can be the SPI universal serial bus, can be also the UART universal serial bus, can also be the I2C universal serial bus.
(2), main controller system module
Described main controller system module comprises: main controller circuit, crystal oscillating circuit, RS-232 interface circuit, usb circuit, local area network interface circuit LAN, Chu Moping ﹠amp; LCD circuit, digital output interface circuit, gpib interface circuit, storer and interface circuit and mouse interface circuit much all belong to option, can increase and decrease according to demand, for example increase the SD card, or the increase and decrease storer capacity or with its choice.
1, main controller circuit
Main controller circuit is generally realized by microprocessor, can select dsp processor, arm processor, single-chip microcomputer, Duo CPU and interface or PC104 plate etc., for spirit of the present invention without essential distinction.For example select the arm processor S3C2410/2440A of SAMSING company, also the microprocessors such as STM32F10X/20X/40X of optional hundred million method companies.
2, the effect of master controller in system
In conjunction with figure attached 2, the main controller system module is completed information interaction by the front panel controller circuitry in universal serial bus BUS_ITF and panel control system module on the one hand, the technical indicator information such as the type of waveform of user input, waveform parameter are analyzed, generated that in access function/AWG (Arbitrary Waveform Generator) plug-in card unit, waveform generates; The register command of control circuit; Send to the waveform in function/arbitrary waveform generator plug-in card unit to generate the resource (such as information such as Wave datas) of system according to the family order on the other hand; Control circuit finally makes function/arbitrary waveform generator export the waveform of customer requirements; Master controller also monitors the input action of touch-screen and is analyzed and carry out corresponding operating, comprises and completes the operation that refreshes LCD display interface figure.
(3), universal serial bus
Described universal serial bus refers to the universal serial bus of joint face panel control system module and main controller system module, can use UART or spi bus.
(4), clock drives ﹠amp; The Bus isolation system module
1, clock and clock drive
Scheme (1) waveform generation system module is used separately a crystal oscillator: in precision prescribed and the higher function/arbitrary waveform generator of stability, its waveform generation system module is used temperature compensating crystal oscillator, for improving load capacity, add the driving chip, here use the driving chip MAX9120 of MAX company, its wiring diagram as shown in Figure 4.
The whole instrument of scheme (2) uses a crystal oscillator: cancel the crystal oscillator (200_10) of master controller this moment, completed by the crystal oscillator in 400_1, adjusted the dominant frequency of master controller by the phaselocked loop (PLL) of master controller inside.
2, Bus isolation unit
Bus isolation unit in the described Bus isolation system module product digital isolator chip of generally hanking adopts the ADuM1401 chip of magnetic medium isolation etc. such as U.S. AD company.Described universal serial bus can be synchronous serial bus, can also be asynchronous serial bus, and concrete scheme is exemplified below:
Scheme (1) is used spi bus: spi bus is the four-wire system synchronous serial bus, the present invention gives up the NSS signal need not, only use SCLK, MOSI, three lines of MISO (by reference to the accompanying drawings 2 or 3, x=3), the scheme wiring diagram of use spi bus and isolator ADuM1401 chip as shown in Figure 5.Spi bus port SCLK_COM, MOSI_COM and the MISO_COM signal of the host processor chip that one side joint of ADuM1401 chip is connected with the BUS_COM bus, power supply+3.3DVDD_0 that chip uses and ground DGND_0 and main processor circuit share; Signal wire SCLK_i, MOSI_i, MISO_i that each plug-in card expansion slot in another side joint of chip is connected with the BUS_i bus waveform generation system unit is drawn, here i=1,2 ... n, the power supply+3.3DVDD_i of chip and ground DGND_i share a cover power supply with corresponding plug-in card.
Scheme (2) is used the UART bus: the UART bus is asynchronous reception/transmission bus, use 2 (x=2) signal wires, be RXD and TXD signal wire, because the UART bus speed is low than SPI, can use optocoupler as isolating device, for example the 6N137 opto-coupler chip of FAIRCHILD company is seldom given unnecessary details herein.
Scheme (3) is used the USART universal serial bus: the USART universal serial bus has the synchronous and asynchronous mode.Asynchronous system is the same with the UART bus, and the method for synchronization will add a synchronous clock line, repeats no more herein.
(5), waveform generation system module
Structure and the device of a kind of card insert type hyperchannel function/arbitrary waveform generator of the present invention, its waveform generation system module has been used the function/arbitrary waveform generator plug-in card unit of n=4 passage, and the number of plug-in card can be determined the number of channels demand that signal produces according to the user.Can select between 1～n piece, very large n is theoretical value, in fact to consider the load capacity of bus and the factors such as signal impedance coupling that isolator arrives each plug-in card, n≤4 may be best, and n＞4 are this requires too much occasion can consider to solve better with the method for many instrument cascades to signalling channel.
Described waveform generation system module is the nucleus module of function/arbitrary waveform generator system, generally comprises waveform and generates ﹠amp; Control circuit, DAC circuit and signal conditioning circuit;
1, waveform generates ﹠amp; Control circuit
Waveform generates ﹠amp; Control circuit is again the core of function/arbitrary waveform generator plug-in card unit.Waveform generates ﹠amp; The concrete inner structure of control circuit can decide demands such as signal types according to the user, for example uses Direct Digital frequency synthesis (DDS) method.Described waveform generates ﹠amp; Control circuit can also the production burst ripple, triangular wave, square wave etc., has more the waveform that can also be generated by function of characteristic or waveform that touch screen interface draw and by the random wave of instrument system software editing.
Described waveform generates ﹠amp; Control module can be realized by a slice field programmable gate array (FPGA) chip, and described FPGA can be that Xilinx company produces, and can be also the chip that altera corp etc. produces, for the present invention without essential distinction.
2, DAC circuit
The DAC circuit can decide indexs such as the frequency of output waveform, precision according to the user, such as D/A converter chips such as AD9736, the AD9755 of AD company, AD9747.
3, Lv Bo ﹠amp; Signal conditioning circuit
Lv Bo ﹠amp; Signal conditioning circuit is the indispensable circuit block of analog output signal that generates.Can switch according to the type selecting of output signal and use different wave filters; Signal condition is also determined according to technical indicators such as the frequency of the type of output signal, output signal and amplitudes.
4, address setting circuit
Described address setting circuit, take four-way as example, this address setting circuit scheme contains 2 resistance R 0, R1, and their a termination waveform generates ﹠amp; The input port of control module circuit; Another termination power or ground, generation 00,01,10,11 4 kind of coding are that the address code of four expansion slot settings is for the plug-in card Address Recognition.The structure of the function/arbitrary waveform generator that the utility model provides and device are that each passage is isolated mutually, need four groups of independently power supplys for four passages, four groups of power supplys shown in accompanying drawing 6 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.
structure and the device of described a kind of card insert type hyperchannel function/arbitrary waveform generator, it is characterized in that: take the four-way function/arbitrary waveform generator as example, referring to Fig. 7, the mass-sending that is provided with in the command frame that master controller sends to function/arbitrary waveform generator waveform plug-in card unit/single-shot zone bit Bit_i+1 is mass-sending when Bit_i+1=1, Bit_i+1=0 is single-shot, mass-sending is simultaneously to n same order and the data of function/arbitrary waveform generator waveform plug-in card unit transmission, when all function/arbitrary waveform generator waveform plug-in cards unit receives command frame, the Bit_i+1 position is judged, Bit_i+1=1 carries out the mass-sending function, Bit_i+1=0 will continue zone bit Bit_i and Bit_i-1 are judged, the Bit_iBit_i-1 value is 00, 01, 10, 11 4, corresponding with the address setting code of the address setting circuit of four expansion slot, after all function/arbitrary waveform generator waveform plug-in cards unit receives command frame, wherein only have a function/arbitrary waveform generator waveform plug-in card unit consistent with the Bit_iBit_i-1 value, thereby be confirmed to be the order that sends to this plug-in card and carried out, other plug-in card is not carried out any operation, accompanying drawing 8 is workflows of sending and receiving command frame.
Concrete embodiment in the above embodiment; be interpreted as only being one of implementation of the present utility model; and be not used in and limit protection domain of the present utility model; all within spirit of the present utility model and principle of design; any change of doing, be equal to replacement, improvement etc., all should be considered to be encompassed among the protection domain of utility model.
Claims (2)
1. structure and the device of a card insert type hyperchannel function/arbitrary waveform generator, described a kind of card insert type hyperchannel function/arbitrary waveform generator is comprised of the four systems module, comprises that panel control system module (100), main controller system module (200), clock drive ﹠amp; Bus isolation system module (400) and waveform generation system module (300); Wherein, described panel control system module comprises: front panel controller circuitry, numerical coding on-off circuit, keyboard circuit and LED indicating circuit; Described main controller system module comprises: main controller circuit, RS-232 interface circuit, usb circuit, local area network interface circuit LAN, Chu Moping ﹠amp; LCD circuit, digital output interface circuit, gpib interface circuit, storer and interface circuit, mouse interface circuit and crystal oscillating circuit; Described clock drives ﹠amp; The Bus isolation system module comprises: clock driver element, universal serial bus (410) and sequence number are n the Bus isolation unit of 1# ~ n#; Described waveform generation system module comprises: sequence number is function/arbitrary waveform generator plug-in card unit, a n plug-in card expansion slot and n expansion slot address setting circuit of n the passage of 1# ~ n#; Described function/arbitrary waveform generator plug-in card unit comprises: waveform generates ﹠amp; Control circuit, DAC circuit and Lv Bo ﹠amp; Signal conditioning circuit; It is characterized in that: panel control system module (100), universal serial bus (500), main controller system module (200), clock drive ﹠amp; Bus isolation system module (400) and waveform generation system module (300) are linked in sequence.
2. structure and the device of a kind of card insert type hyperchannel function/arbitrary waveform generator according to claim 1, it is characterized in that: described bus (500) can be that synchronous serial bus can also be asynchronous serial bus.
3. structure and the device of a kind of card insert type hyperchannel function/arbitrary waveform generator according to claim 1, it is characterized in that: described universal serial bus (410) be one much more main from serial communication bus, the buses isolator unit is the device of non-electrical couplings.
4, structure and the device of a kind of card insert type hyperchannel function/arbitrary waveform generator according to claim 1, it is characterized in that: described sequence number is the function/arbitrary waveform generator plug-in card unit of n the passage of 1# ~ n#, and the function/arbitrary waveform generator plug-in card unit of its each passage has identical electrical structure, electric parameter and physical dimension.
5, structure and the device of a kind of card insert type hyperchannel function/arbitrary waveform generator according to claim 1, it is characterized in that: described universal serial bus (410) can be SPI four-wire system bus, give up NSS, use three signal wires wherein, a serial time clock line SCLK is used for synchronized transmission and receive data; A MOSI line is used for sending synchronous serial data; A MISO line is used for receiving synchronous serial data; Corresponding Bus isolation unit also uses three ports.
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| CN 201220399952 CN202948359U (en) | 2012-08-14 | 2012-08-14 | Plug-in multichannel function or arbitrary waveform generator structure and device |
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| CN 201220399952 CN202948359U (en) | 2012-08-14 | 2012-08-14 | Plug-in multichannel function or arbitrary waveform generator structure and device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592996A (en) * | 2012-08-14 | 2014-02-19 | 长春迪派斯科技有限公司 | Structure and device of plug-in multichannel function/arbitrary waveform generator |
| CN103944538A (en) * | 2014-04-28 | 2014-07-23 | 杭州电子科技大学 | Random waveform generating device |
| CN106327973A (en) * | 2016-08-22 | 2017-01-11 | 中国电子科技集团公司第四十研究所 | Multi-channel low-frequency signal generating and conditioning teaching experiment circuit and method |
| CN109799373A (en) * | 2019-02-18 | 2019-05-24 | 杭州长川科技股份有限公司 | The arbitrary waveform generator for having multi-channel synchronous function |
| CN110989766A (en) * | 2018-11-16 | 2020-04-10 | 苏州普源精电科技有限公司 | Method and device for constructing arbitrary wave function |
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2012
- 2012-08-14 CN CN 201220399952 patent/CN202948359U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592996A (en) * | 2012-08-14 | 2014-02-19 | 长春迪派斯科技有限公司 | Structure and device of plug-in multichannel function/arbitrary waveform generator |
| CN103592996B (en) * | 2012-08-14 | 2017-03-08 | 长春迪派斯科技有限公司 | A kind of structure of card insert type multichannel function/arbitrary waveform generator and device |
| CN103944538A (en) * | 2014-04-28 | 2014-07-23 | 杭州电子科技大学 | Random waveform generating device |
| CN103944538B (en) * | 2014-04-28 | 2017-01-04 | 杭州电子科技大学 | A kind of optional waveform generator |
| CN106327973A (en) * | 2016-08-22 | 2017-01-11 | 中国电子科技集团公司第四十研究所 | Multi-channel low-frequency signal generating and conditioning teaching experiment circuit and method |
| CN110989766A (en) * | 2018-11-16 | 2020-04-10 | 苏州普源精电科技有限公司 | Method and device for constructing arbitrary wave function |
| CN109799373A (en) * | 2019-02-18 | 2019-05-24 | 杭州长川科技股份有限公司 | The arbitrary waveform generator for having multi-channel synchronous function |
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