CN100557449C - Multifunctional tester - Google Patents
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- CN100557449C CN100557449C CNB2007100502667A CN200710050266A CN100557449C CN 100557449 C CN100557449 C CN 100557449C CN B2007100502667 A CNB2007100502667 A CN B2007100502667A CN 200710050266 A CN200710050266 A CN 200710050266A CN 100557449 C CN100557449 C CN 100557449C
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- 238000004891 communication Methods 0.000 claims abstract description 35
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- 238000012544 monitoring process Methods 0.000 abstract description 4
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- 238000005259 measurement Methods 0.000 description 5
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Abstract
The invention discloses a kind of multifunctional tester, comprise the digital storage oscilloscope module, the digital multimeter module, function signal generator module and frequency meter module, it is characterized in that, control plate in the digital storage oscilloscope module is as the mainboard of multifunctional tester, the multi-computer communication module is arranged on it and show computing module, be used for the digital multimeter module, the data communication of function signal generator module and frequency meter module and demonstration are calculated, the digital multimeter module, function signal generator module and frequency meter module obtain user input commands by mainboard communication, then output data and the mutual back of mainboard are shown output data by display screen.Thereby, for the Electronics Engineer provides a kind of conventionally test that conveniently carries out, contain the multifunctional tester of the needed electronic instrument commonly used of field monitoring, set up a test platform that makes things convenient for the Electronics Engineer to carry out conventionally test.
Description
Technical field
The invention belongs to electronic measuring technology field, specifically relate to a kind of multifunctional tester.
Background technology
In the prior art, the testing tool that the Electronics Engineer uses always has:
Digital oscilloscope: have remarkable differently with traditional analog oscilloscope, and unique advantage is arranged.The develop rapidly of science and technology at present, the seizure of single signal, measure and study and more and more be subjected to people's attention and attention, in message area, high-speed computer, high-speed data communication and high-speed digital integrated circuit and system thereof, the sporadic fault that is faced with hardware, software and produces by the software and hardware acting in conjunction, the puzzlement of challenges such as soft fault, the DSO that presses for more at a high speed could handy these difficult problems of solution.
Digital multimeter: multimeter definitely is the most frequently used a kind of survey instrument in the inside, electronic surveying field, the Electronics Engineer can use multimeter to measure combined-voltage, ac and dc current, resistance, diode, the most common parameter of circuit on-off or the like electronic system, and owing to be the numeric type multimeter, so can realize automatic gear adjustment very easily, automatic error correction or the like function.
Function signal generator: function signal generator is to be used for producing some function signals commonly used to come the auxiliary electron slip-stick artist to detect the device of system under test (SUT).The Electronics Engineer can check system under test (SUT) with digital oscilloscope then with function signal generator generation waveform.
Frequency meter: though digital oscilloscope also can frequency measurement, it is little to survey scope, and precision is also not enough.And frequency measurement is in the detection means very important one, so the frequent frequency of utilization meter of Electronics Engineer is used for high precision, the occasion that the frequency measurement scope is big is as the instrument of special frequency measurement.
Develop from instrument, the slip-stick artist more and more needs the integrated test platform rather than the testing tool of simple function.The effect that designs good test platform performance is more many than single testing tool application surface broadness, the trend of instruments design after multiple instrument module cooperates test platform of formation to become.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency of the prior art, provide a kind of Electronics Engineer of convenience to carry out conventionally test, contain the multifunctional tester of the required electronic instrument commonly used of field monitoring.
For achieving the above object, multifunctional tester of the present invention, comprise the digital storage oscilloscope module, the digital multimeter module, function signal generator module and frequency meter module, it is characterized in that, control plate in the digital storage oscilloscope module is as the mainboard of multifunctional tester, the multi-computer communication module is arranged on it and show computing module, be used for the digital multimeter module, the data communication of function signal generator module and frequency meter module and demonstration are calculated, the digital multimeter module, function signal generator module and frequency meter module obtain user input commands by mainboard communication, then output data and the mutual back of mainboard are shown output data by display screen.
Because in the design of multifunctional tester, the digital storage oscilloscope module is that technology content is the highest, designing requirement is the highest, and design difficulty is the module of maximum also, becomes the core ingredient of multifunctional testing instrument, occupies an important position in the whole instrument design.Digital storage oscilloscope control plate has been designed to the mainboard of multifunctional tester, utilize the resource of oscillograph module, be multi-computer communication module and demonstration computing module, other instrument module obtains user input commands by communicating by letter with mainboard, then output data and the mutual back of mainboard are shown output data by display screen, like this, digital multimeter module, function signal generator module and frequency meter module are integrated in the instrument.Thereby, for the Electronics Engineer provides a kind of conventionally test that conveniently carries out, contain the multifunctional tester of the needed electronic instrument commonly used of field monitoring, set up a test platform that makes things convenient for the Electronics Engineer to carry out conventionally test.Simultaneously, because the integrated of function signal generator module arranged, the multifunctional testing instrument just becomes a more complete monitoring system, can measuring-signal, also can the outputting standard signal for detection.
In addition, be serial communication at mainboard with communicating by letter of digital multimeter module, function signal generator module and frequency meter module.The digital multimeter module, the function signal generator module, the exchange of frequency meter module and mainboard data volume is also little, and considers factors such as the convenience of control, simple and cost, adopts serial ports as communication interface.Connect the serial ports of the processor of primary processor and each module, forms a communication bus,, just can realize that mainboard follows the exchanges data communication between digital multimeter module, function signal generator module and the frequency meter module according to the agreement of setting.
Description of drawings
Fig. 1 is a kind of communication design of inner each intermodule of multifunctional tester of the present invention embodiment theory diagram;
Fig. 2 is a kind of embodiment theory diagram of multifunctional tester of the present invention;
Fig. 3 is the process flow diagram of a kind of embodiment of multifunctional tester workflow of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention is described.What need point out is that although similar parts appear in the different accompanying drawings, they are endowed similar reference numerals.In addition, in the following description, when perhaps the detailed description of known function that adopts and design can desalinate subject content of the present invention, these were described in here and will be left in the basket.
Fig. 1 is a kind of communication design of inner each intermodule of multifunctional tester of the present invention embodiment theory diagram.Among the figure, all modules adopt same keyboard and LCDs, keyboard and LCDs are connected the control plate 1 of digital storage oscilloscope module, be on the mainboard of multifunctional tester, its excess-three tester module, be that digital multimeter module 4, function signal generator module 5 and frequency meter module 6 all are connected on the universal serial bus, and communicate by this universal serial bus and digital storage oscilloscope module, like this, how avoiding bus collision has been exactly a problem that merits attention.In the present embodiment, for each functional module that is connected on the universal serial bus is compiled and edit an address, the address that is the digital multimeter module is 1, the address of function signal generator module is 2, the address of frequency meter module is 3, like this, function according to the user is switched requirement, the control plate of digital storage oscilloscope module, the mainboard that is multifunctional tester is made the decision that will follow which module communication on the universal serial bus, can send an address 0 earlier as close stance, module on all universal serial bus all will be received this address bit, but because 0 be not the address of any machine, like this will closeall module communication, then, mainboard can send corresponding address code and activate corresponding module.Certainly the functional module on all universal serial bus all can receive address code, all can compare with this functional module address then, if identical, then be activated, if different, the data of receiving after then continuing to ignore.The activated functional module can send the address code of oneself and go back, so that the control plate of digital storage oscilloscope module, promptly the mainboard of multifunctional tester is confirmed to be activated, and this is the engineering of a carrying out shake communication.By such bus protocol agreement, we just can avoid the data collision above the bus in design, reach the purpose that the module on the universal serial bus is controlled respectively.
Each functional module of the present invention adopts serial ports to realize that mutual communication can guarantee the good modularization of instrument, convenient separately design, also convenient newly-increased, the deletion test module, design excellent communications agreement and the design of extendible system framework make each functional module can well constitute test platform.
Because the control plate of digital storage oscilloscope module, be that the mainboard of multifunctional tester is with the module communication on the universal serial bus time, the data exchange way of using is different, as, digital multimeter module and frequency meter module are received after the order of the bit, also to adjust gear, measurement data constantly returns to then and sponsor, and signal source does not need return data basically, in specific implementation process, the communications protocol that different modular design is different.
In addition, Shu Ru simulating signal is in digital storage oscilloscope module 1 as shown in Figure 1, exists among the semiconductor memory RAM after wherein A/D transducer converts digital signal to, and the content of storing among the RAM is accessed, and is presented on the LCD; Simultaneously, this Wave data sends to function signal generator through universal serial bus, by corresponding D/A transducer, reverts to analog quantity again and exports to the user.
Fig. 2 is a kind of embodiment theory diagram of multifunctional tester of the present invention.Among the figure, control plate 101 in the digital storage oscilloscope module 1 is as the mainboard of multifunctional tester, comprise FPGA collection and display system, DSP data processing and control system, data processing RAM and serial communication module, FPGA collection and display system are used for the collection of oscillograph input signal, and export to the DSP data processing and control system is handled, as the display interface circuit of DSP data processing and control system, be used for the demonstration of multifunctional tester simultaneously; Data processing RAM is the external random access memory of DSP data processing and control system; DSP data processing and control system communicate by serial communication module and digital multimeter module, function signal generator module, frequency meter module.In the present embodiment, the multi-computer communication module is made up of DSP data processing and control system, data processing RAM and serial communication module, and the demonstration computing module is by DSP data processing and control system, data processing RAM and comprise that FPGA gathers and display system is formed.
In the present embodiment, the keyboard 2 of multifunctional tester and LCDs 3 are all received on the digital storage oscilloscope module 1, specifically, keyboard 2 direct DSP data processing and control system, and by DSP data processing and control system multifunctional tester of the present invention is controlled; LCDs 3 is gathered and display system by FPGA, and it is shown relevant waveform and data as display interface with DSP data processing and control system.
In the present embodiment, the dsp processor of multifunctional tester mainboard adopts Blackfin series, the Blackfin series DSP is that ADI company and Intel develop jointly the high-performance of releasing, low-power consumption the 4th generation the fixed DSP product, merged the micro-signal structure (MSA) of Analog Devices/Intel, it has been combined in 32 risc type instruction set and two 16 multiplication (MAC) signal processing function that adds up with the ease for use that universal microcontroller had.This combination makes that the Blackfin processor can all best effects of performance in signal Processing and control and treatment application.
The present invention adopts Blackfin series DSP BF531, BF531 be dominant frequency up to 400MHz, the peak value processing power is a 1.2GMIPS high-performance Blackfin processor.Its kernel comprises: 2 16 bit macs, 2 40 ALU, 48 digital video ALU, and 1 40 bit shift device, BF533 also comprises a UART mouth, SPI mouth, dual serial mouth (SPORTs), four general purpose timers (wherein three have the PWM function), real-time clock, WatchDog Timer in addition, and a parallel Peripheral Interface.External memory controller can with SDRAM, SRAM, Flash and ROM seamless link.
In addition, in the present embodiment, universal serial bus also is connected to PC virtual instrument module 7, is used for communicating by letter with other instruments or PC by PC.
In the present embodiment, cost performance is mainly considered in the selection of the processor of digital multimeter module 4, function signal generator module 5, frequency meter module 6, has adopted general C51 Series chip as control chip.
Fig. 3 is a kind of embodiment of multifunctional tester workflow of the present invention.In the present embodiment, design has an embedded software framework, and this embedded software framework can fully be brought the usefulness of system hardware into play, guarantees the high-efficient operation of total system.This software frame is imported the part of master control to external world, extraneous input is assigned to its corresponding processing module goes.Specifically, as shown in Figure 3, after the multifunctional tester start, total system begins initialization, wait for the selection of user then, promptly press the function corresponding selection key, and carry out press key message and handle function, judge the pattern of selecting, enter the function corresponding pattern, i.e. digital multimeter, function signal generator, frequency meter or digital storage oscilloscope pattern, each corresponding functional modules, the test or export corresponding signal after, show relevant data by the demonstration computing module, update displayed, then, return press key message and handle, wait for the selection of user function.
Although above the illustrative embodiment of the present invention is described; but should be understood that; the invention is not restricted to the scope of embodiment; to those skilled in the art; as long as various variations appended claim limit and the spirit and scope of the present invention determined in; these variations are conspicuous, and all utilize innovation and creation that the present invention conceives all at the row of protection.
Claims (5)
1. multifunctional tester, comprise the digital storage oscilloscope module, the digital multimeter module, function signal generator module and frequency meter module, it is characterized in that, control plate in the digital storage oscilloscope module is as the mainboard of multifunctional tester, the multi-computer communication module is arranged on the control plate and show computing module, be used for the digital multimeter module, the data communication of function signal generator module and frequency meter module and demonstration are calculated, the digital multimeter module, function signal generator module and frequency meter module obtain user input commands by mainboard communication, then output data and the mutual back of mainboard are shown output data by display screen.
2. multifunctional tester according to claim 1 is characterized in that, the mainboard of described multifunctional tester is serial communication with communicating by letter of digital multimeter module, function signal generator module and frequency meter module.
3. multifunctional tester according to claim 2, it is characterized in that, each functional module on the bus of described serial communication is compiled and edit an address, the mainboard of multifunctional tester is made in the time of will following the decision of which module communication on the universal serial bus, send an address 0 earlier as close stance, 0 is not the address of any machine, module on all universal serial bus all will be received this address bit, like this will closeall module communication, then, mainboard sends corresponding address code and activates corresponding functional modules.Certainly the functional module on all universal serial bus all can receive address code, all can compare with this functional module address then, if identical, then be activated, if different, the data of receiving after then continuing to ignore; The activated functional module sends the address code of oneself and goes back, so that the mainboard of multifunctional tester is confirmed to be activated.
4. multifunctional tester according to claim 1 is characterized in that, the mainboard of described multifunctional tester comprises FPGA collection and display system, DSP data processing and control system, data processing RAM and serial communication module;
FPGA gathers and display system is used for the collection of oscillograph input signal, and exports to the DSP data processing and control system is handled, and the while is used for the demonstration of multifunctional tester as the display interface circuit of DSP data processing and control system;
Data processing RAM is the external random access memory of DSP data processing and control system;
DSP data processing and control system communicate by serial communication module and digital multimeter module, function signal generator module, frequency meter module.
5. multifunctional tester according to claim 1, it is characterized in that, in the described digital storage oscilloscope module, the simulating signal of input exists among the semiconductor memory RAM after wherein A/D transducer converts digital signal to, and the content of storing among the RAM accessed, be presented on the LCD; Simultaneously, this Wave data sends to function signal generator through universal serial bus, by corresponding D/A transducer, reverts to analog quantity again and exports to the user.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100502667A CN100557449C (en) | 2007-10-17 | 2007-10-17 | Multifunctional tester |
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| CNB2007100502667A CN100557449C (en) | 2007-10-17 | 2007-10-17 | Multifunctional tester |
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| CN101173963A CN101173963A (en) | 2008-05-07 |
| CN100557449C true CN100557449C (en) | 2009-11-04 |
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Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101887111A (en) * | 2009-05-15 | 2010-11-17 | 施耐德电器工业公司 | System and method for automatically testing analog module used for programmable logic controller (PLC) |
| CN101975879A (en) * | 2010-09-27 | 2011-02-16 | 江苏大学 | Low-voltage low-power-consumption pocket oscilloscope based on DSP (Digital Signal Processing) |
| CN102495317A (en) * | 2011-12-12 | 2012-06-13 | 江苏绿扬电子仪器集团有限公司 | Equipment for achieving multifunction parallel operation aiming at single measuring device |
| CN102495253A (en) * | 2011-12-12 | 2012-06-13 | 江苏绿扬电子仪器集团有限公司 | Handheld multifunctional parallel-operation measuring device |
| CN103176043B (en) * | 2011-12-21 | 2016-08-03 | 北京普源精电科技有限公司 | There is signal generator and the signal processing method of cymometer |
| CN102645601A (en) * | 2012-05-16 | 2012-08-22 | 浙江大学 | Bow net electrical parameter detection debugging system based on NI USB6251 data acquisition card |
| US10073750B2 (en) * | 2012-06-11 | 2018-09-11 | Tektronix, Inc. | Serial data link measurement and simulation system |
| CN103033664B (en) * | 2012-12-24 | 2014-11-05 | 电子科技大学 | Wave form brightness adjustment and correction method of digital three-dimensional oscilloscope |
| CN103809588B (en) * | 2014-02-27 | 2016-08-24 | 陕西科技大学 | The spot check instrument system of a kind of DEH and detection method |
| CN104317704A (en) * | 2014-09-30 | 2015-01-28 | 中国电子科技集团公司第四十一研究所 | Measuring software integration method for production line automatic test system |
| CN104597303B (en) * | 2014-12-18 | 2018-10-12 | 中国电子科技集团公司第四十一研究所 | A kind of wireless transmission type Digital Oscillograph device |
| CN104504975B (en) * | 2014-12-29 | 2017-08-11 | 清华大学 | Portable comprehensive electronic experiment bed based on field programmable gate array |
| CN110501599A (en) * | 2019-09-24 | 2019-11-26 | 南京国电南自电网自动化有限公司 | A kind of full-automatic testing platform for automation equipment plug-in unit |
| CN110824218B (en) * | 2019-11-18 | 2022-03-22 | 重庆邮电大学 | Digital storage oscilloscope system based on ZYNQ |
| CN111537816B (en) * | 2020-04-22 | 2021-04-30 | 南京麦澜德医疗科技股份有限公司 | Basin bottom instrument automatic testing tool and testing method |
| CN113804992A (en) * | 2020-06-16 | 2021-12-17 | 普源精电科技股份有限公司 | Test function module, multifunctional test system and method |
| CN111965447B (en) * | 2020-07-22 | 2022-10-18 | 电子科技大学 | Hardware configurable analog signal comprehensive test system |
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