CN101504428A - Electronic measurement method and multifunctional electronic measuring instrument - Google Patents
Electronic measurement method and multifunctional electronic measuring instrument Download PDFInfo
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- CN101504428A CN101504428A CNA200910129235XA CN200910129235A CN101504428A CN 101504428 A CN101504428 A CN 101504428A CN A200910129235X A CNA200910129235X A CN A200910129235XA CN 200910129235 A CN200910129235 A CN 200910129235A CN 101504428 A CN101504428 A CN 101504428A
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Abstract
The invention discloses an electronic measurement method, which comprises multiple electronic measurement functions, and also comprises that: a hardware platform consisting of DSP and FPGA development modules, a software platform consisting of muclinux and GUI development modules, and a system power supply supplying power for hardware modules are set; analog signals are input from an analog front end, converted into digital signals by a sampling module, processed by an FPGA internal cache and sent to a DSP for operation processing, and finally a result is transmitted to a TFT LCD display for display and output; the DSP calls signals generated by a signal generating module in an FPGA and calls out the digital semaphore to a signal output module, and the signals are output after smooth filtering by an analog back end; a muclinux operating system is utilized to be responsible for monitoring human-computer interfaces, and executes corresponding function tasks according to user instructions; and the muclinux operating system calls corresponding hardware module drivers according to different tasks so as to realize required functions through the hardware modules.
Description
Technical field
The present invention relates to electronic measuring method and tester, relate in particular to a kind of with digital storage oscilloscope, spectrum analyzer, arbitrarily signal generating device and 51/2 digital multimeter be integrated in one multi-functional control electronic measuring method and a kind of four the unification multifunctional testers.
Background technology
The electronic surveying field discloses a lot of electronic measuring methods based on different principle and different purposes, nowadays along with the fast-developing electric equipment of China's power industry is preventative the important step that ensures in safe operation of power system and the maintenance work, effectively the conduction of detecting instrument or material needs efficiently succinct electronic measuring method with insulation and power supply state thereof, more needs a kind of diverse in function, simple in structure and easy to operate electronic measuring instrument.
Electronic measuring instrument is widely used in all trades and professions at present, various electronic surveying tasks are varied, require the detection of electrons personnel to carry multiple electronic measuring instrument and reuse the electronic surveying value that records difference in functionality and application, the surveying instrument of simple function uses different instruments in a large number because of its function singleness correspondence causes measuring process, thereby cause the lengthy and tedious complexity of testing staff's measurement procedure, carry in the process inconvenient.
Summary of the invention
At above shortcomings in the prior art, the present invention is for addressing the above problem the electronic measuring method that a kind of multi-functional control is provided; The present invention also provides a kind of four unification multifunctional testers of realizing this method.
The present invention is that to address the above problem the technical scheme that is adopted as follows:
A kind of electronic measuring method, it comprises multiple electronic surveying function, is provided with by hardware platform that adopts DSP and FPGA development module to form and the software platform of being made up of μ clinux and GUI development module; And system power supply is set provides power supply for each hardware module, its concrete steps are as follows:
(1) simulating signal is imported from AFE (analog front end), is converted to digital signal through after the data sampling module, handles and is sent to DSP through the FPGA inner buffer again and carry out calculation process, at last result transmission is shown output to the TFTLCD display;
(2) call signal generating module generation signal among the FPGA by DSP, and its digital signal amount is called out to signal output module, behind the analog back-end smothing filtering, export;
(3) utilize μ clinux operating system to be responsible for monitoring human-computer interface, carry out the function corresponding task according to user instruction; Different tasks is by μ clinux system call corresponding hardware module driver, thereby realizes required function by hardware module.
Described step (1) is further comprising the steps of: described simulating signal the conditioning of described AFE (analog front end) handle meet the A/D converter requirement after, be responsible for being converted into data-signal by described data acquisition module, and be transferred to digital display circuit, be responsible for embedded OS operation, instrument algorithm, digital signal processing, logic control output etc. by data system, the control of other digital circuits then is responsible in logic control.
Described step (2) is further comprising the steps of: thus the described analog back-end that enters band D/A conversion chip after the output of described digital signal produces required simulating signal.
Described step (3) is further comprising the steps of: it specifically is divided into oscillograph functional task, spectrum analyzer functional task, signal generator functional task and 51/2 digital multimeter functional task by man-machine interface touch key-press input back execution described functional task; It comprises that the corresponding hardware module after man-machine interface task, communication task, intelligent control task, data acquisition task, data storage task, data processing task and data print out task need calling program to drive realizes to relate to concrete operation task.
A kind of multifunction electronic measuring instrument of realizing above-mentioned electronic measuring method, described electronic gauge is integrated in one digital storage oscilloscope, spectrum analyzer, arbitrarily signal generating device and 51/2 digital multimeter by the software and hardware cooperation; Its hardware setting comprises a digital display circuit, a data acquisition system (DAS) and a signal processing system, and described digital display circuit interconnects with described data acquisition system (DAS) and described signal processing system respectively by data transmission bus; System power supply is set to interconnect with described digital display circuit, described data acquisition system (DAS) and described signal processing system respectively by various control circuits, change-over circuit.
Described digital display circuit also comprises fpga chip part, DSP programmable logic device (PLD) part and one or more storer.
Described data acquisition system (DAS) also comprises an analog front-end module, a data acquisition module and a communication interface module.
Described signal processing system also comprises a Logic control module, a signal output module, an analog back-end module and one human-machine interface module.
Described human-machine interface module also comprises a TFT LCD display and touches the input button; Described communication interface module also comprises network communication interface, USB communication interface, RS232 communication interface etc.
Beneficial effect of the present invention is: this invention overall design realizes intelligence operation and simplified measurement operation, has characteristics such as intellectuality, integrated, software implementation; Programming moduleization, functionalization make it be easy to transplant, revise and expansion; Instrument of the present invention is multi-functional integrated, and an instrument can be used for finishing multinomial measuring task, the simplified measurement process; Abundant communication interface can carry out the data upload download and can connect the printing device printout; Enclosure designs completely cuts off interference source, possesses the Automatic Anti-interference function, guarantees the accuracy of measurement result; The multinomial function selecting pattern of instrument is equivalent to the integrated use of many instruments, and is easy to carry and with low cost, can effectively carry out electric system maintenance and power equipment testing.
The present invention is described in detail below in conjunction with accompanying drawing;
Description of drawings
Fig. 1 is an electronic measuring method software flow block diagram among the present invention;
Fig. 2 is that electronic measuring method software is realized the task scheduling block diagram among the present invention;
Fig. 3 is a multifunctional tester hardware principle block diagram of the present invention.
Embodiment
Referring to Fig. 1, Fig. 2 and Fig. 3, electronic measuring method of the present invention is provided with by hardware platform that adopts DSP and FPGA development module to form and the software platform of being made up of μ clinux and GUI development module; And system power supply is set provides power supply for each hardware module, its method may further comprise the steps:
(1) simulating signal is imported from AFE (analog front end), is converted to digital signal through after the data sampling module, handles through the FPGA inner buffer, is sent to DSP again and carries out algorithm process, at last result transmission is shown output on the TFT LCD display; Described simulating signal the conditioning of described AFE (analog front end) handle meet the A/D converter requirement after, be responsible for being converted into data-signal by described data acquisition module, and be transferred to digital display circuit, be responsible for embedded OS operation, instrument algorithm, digital signal processing, logic control output etc. by data system, the control of other digital circuits then is responsible in logic control.
(2) call signal generating module generation signal among the FPGA by DSP, and its digital signal amount is called out to signal output module, behind the analog back-end smothing filtering, export; Thereby the described analog back-end that enters band D/A conversion chip after the described digital signal output produces required simulating signal.
(3) utilize μ clinux operating system to be responsible for monitoring human-computer interface,, carry out the function corresponding task according to user instruction; Different tasks can be by μ clinux system call corresponding hardware module driver, thereby realizes required function by hardware module; It specifically is divided into oscillograph functional task, spectrum analyzer functional task, signal generator functional task and 51/2 digital multimeter functional task by man-machine interface touch key-press input back execution described functional task; It comprises that the corresponding hardware module after man-machine interface task, communication task, intelligent control task, data acquisition task, data storage task, data processing task and data print out task need calling program to drive realizes to relate to concrete operation task.
Below its operating function is elaborated:
Digital storage oscilloscope: analog bandwidth 200MHz, real-time sampling rate 1GHz, equivalent sampling speed 25GHz, binary channels, 1M sampled point storage depth, input impedance, 1 ± 2%M Ω, in parallel with 24 ± 3pF; Waveform interpolation adopts sin (x)/x mode; Analog-digital converter (A/D) is 8 bit resolutions, and two passages can be sampled simultaneously; Have multiple triggering functions such as edge, pulsewidth, video, energy measurement magnitude of voltage, pulsewidth, frequency dependence parameter possess multiple calculation function.
Spectrum analyzer: spectral range 0.15～500MHz, input maximum level :+10dBm ± 25VDC (decay OdB)+20dBm (decay 40dB), spectrum analysis sampled point 1K～64K, the FFT alternative types has triangular window, Hanning window etc., and input impedance is 1M Ω/30pF; Scanning accuracy is ± 10%, sensitivity: be better than-90dBm scan width: 100KHz/ lattice～50MHz/ lattice, 1-2-5 stepping and OHz/ lattice (0 scanning).
The Any Digit signal generator: reference waveform 100 μ Hz-80MHz two-way output band phase shift function can produce sine wave, square wave, oblique wave, triangular wave, pulse, noise, direct current; Amplitude flatness (with respect to 1KHz):＜100KHz is that 0.1dB 100kHz to 8MHz is that 0.15dB8MHz to 80MHz is 0.3dB; Random waveform 1 μ Hz ~ 20MHz, 27 kinds of internal memories, 10 random wave accesses, random waveform length 2 to 64k points, sampling rate 100MSa/s.
Digital multimeter: 51/2 precision has true rms measurement; Adopt AC/DC changeover switch, the full-electronic adjustment technology of 24 A/D converters, high-precision operational amplifier, real effective; Instrument high reliability, high precision can be used for measuring combined-voltage, ac and dc current, resistance, diode, connecting and disconnecting of the circuit, electric capacity, frequency, temperature.
Referring to Fig. 3, a kind of multifunction electronic measuring instrument of realizing above-mentioned electronic measuring method is integrated in one digital storage oscilloscope, spectrum analyzer, arbitrarily signal generating device and 51/2 digital multimeter by the software and hardware cooperation; Its hardware setting comprises a digital display circuit, a data acquisition system (DAS) and a signal processing system, and described digital display circuit interconnects with described data acquisition system (DAS) and described signal processing system respectively by data transmission bus; System power supply is set to interconnect with described digital display circuit, described data acquisition system (DAS) and described signal processing system respectively by various control circuits, change-over circuit.
Described digital display circuit also comprises fpga chip part, DSP programmable logic device (PLD) part and one or more storer.Described data acquisition system (DAS) also comprises an analog front-end module, a data acquisition module and a communication interface module.Described signal processing system also comprises a Logic control module, a signal output module, an analog back-end module and one human-machine interface module.Described human-machine interface module also comprises a TFT LCD display and touches the input button; Described communication interface module also comprises network communication interface, USB communication interface, RS232 communication interface etc.
The present invention is not limited to above-mentioned embodiment, and all employings and similar system structure of the present invention and method thereof realize all modes of the object of the invention, all within protection scope of the present invention.
Claims (9)
1. electronic measuring method, it comprises multiple electronic surveying function, it is characterized in that, is provided with by hardware platform that adopts DSP and FPGA development module to form and the software platform of being made up of μ clinux and GUI development module; And system power supply is set provides power supply for each hardware module, its concrete steps are as follows:
(1) simulating signal is imported from AFE (analog front end), is converted to digital signal through after the data sampling module, handles and is sent to DSP through the FPGA inner buffer again and carry out calculation process, at last result transmission is shown output on the TFT LCD display;
(2) call signal generating module generation signal among the FPGA by DSP, and its digital signal amount is called out to signal output module, behind the analog back-end smothing filtering, export;
(3) utilize μ clinux operating system to be responsible for monitoring human-computer interface, carry out the function corresponding task according to user instruction; Different tasks is by μ clinux system call corresponding hardware module driver, thereby realizes required function by hardware module.
2. a kind of electronic measuring method according to claim 1, it is characterized in that, described step (1) is further comprising the steps of: described simulating signal the conditioning of described AFE (analog front end) handle meet the A/D converter requirement after, be responsible for being converted into data-signal by described data acquisition module, and be transferred to digital display circuit, be responsible for embedded OS operation, instrument algorithm, digital signal processing, logic control output etc. by data system, the control of other digital circuits then is responsible in logic control.
3. a kind of electronic measuring method according to claim 1 is characterized in that, described step (2) is further comprising the steps of: thus the described analog back-end that enters band D/A conversion chip after the output of described digital signal produces required simulating signal.
4. a kind of electronic measuring method according to claim 1, it is characterized in that described step (3) is further comprising the steps of: it specifically is divided into oscillograph functional task, spectrum analyzer functional task, signal generator functional task and 51/2 digital multimeter functional task by man-machine interface touch key-press input back execution described functional task; It comprises that the corresponding hardware module after man-machine interface task, communication task, intelligent control task, data acquisition task, data storage task, data processing task and data print out task need calling program to drive realizes to relate to concrete operation task.
5. a multifunction electronic measuring instrument of realizing above-mentioned electronic measuring method is characterized in that, described electronic gauge is integrated in one digital storage oscilloscope, spectrum analyzer, arbitrarily signal generating device and 51/2 digital multimeter by the software and hardware cooperation; Its hardware setting comprises a digital display circuit, a data acquisition system (DAS) and a signal processing system, and described digital display circuit interconnects with described data acquisition system (DAS) and described signal processing system respectively by data transmission bus; System power supply is set to interconnect with described digital display circuit, described data acquisition system (DAS) and described signal processing system respectively by various control circuits, change-over circuit.
6. multifunction electronic measuring instrument according to claim 5 is characterized in that, described digital display circuit also comprises fpga chip part, DSP programmable logic device (PLD) part and one or more storer.
7. multifunction electronic measuring instrument according to claim 5 is characterized in that, described data acquisition system (DAS) also comprises an analog front-end module, a data acquisition module and a communication interface module.
8. multifunction electronic measuring instrument according to claim 5 is characterized in that, described signal processing system also comprises a Logic control module, a signal output module, an analog back-end module and one human-machine interface module.
9. multifunction electronic measuring instrument according to claim 8 is characterized in that, described human-machine interface module also comprises a TFT LCD display and touches the input button; Described communication interface module also comprises network communication interface, USB communication interface, RS232 communication interface etc.
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116800A (en) * | 2010-12-23 | 2011-07-06 | 优利德科技(中国)有限公司 | Multi-resistance measuring method for satisfying wireless signal output and measuring device |
| CN102116814A (en) * | 2010-12-23 | 2011-07-06 | 优利德科技(中国)有限公司 | Multifunction integrated electronic measurement method and 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 |
| CN103149401A (en) * | 2013-03-07 | 2013-06-12 | 苏州朗高电机有限公司 | Multifunctional simple oscilloscope |
| CN103278669A (en) * | 2013-05-15 | 2013-09-04 | 西安电子科技大学 | Multifunctional portable experiment device |
| CN103575949A (en) * | 2012-08-08 | 2014-02-12 | 成都爱信雅克科技有限公司 | High-accuracy handhold digital oscilloscope |
| CN103675373A (en) * | 2013-12-17 | 2014-03-26 | 中国电子科技集团公司第四十一研究所 | Digital signal generation method achieved in FPGA |
| CN103837739A (en) * | 2012-11-27 | 2014-06-04 | 江苏绿扬电子仪器集团有限公司 | Time domain and frequency domain comprehensive test device |
| CN103995158A (en) * | 2013-02-17 | 2014-08-20 | 上海安科瑞电气股份有限公司 | Signal generator for fault locating of medical isolation power supply system |
| CN104682943A (en) * | 2013-11-30 | 2015-06-03 | 中国科学院沈阳自动化研究所 | Device and method for generating wave signals |
| CN105223429A (en) * | 2014-07-04 | 2016-01-06 | 苏州万龙电气集团股份有限公司 | A kind of multi-module type configuration type checkout equipment |
| CN105717844A (en) * | 2016-03-29 | 2016-06-29 | 中国计量学院 | Multifunctional signal collection instrument |
| CN105842509A (en) * | 2016-03-18 | 2016-08-10 | 深圳市鼎阳科技有限公司 | Universal meter and reading method |
| CN107607763A (en) * | 2017-08-28 | 2018-01-19 | 武汉理工大学 | A kind of analog signal Real-time Collection transmission display system |
| CN109307791A (en) * | 2017-07-27 | 2019-02-05 | 北京普源精电科技有限公司 | Oscillograph with FFT function |
| CN110596496A (en) * | 2019-10-08 | 2019-12-20 | 天津博诺智创机器人技术有限公司 | Integrated multi-instrument detector |
| CN110824218A (en) * | 2019-11-18 | 2020-02-21 | 重庆邮电大学 | Digital storage oscilloscope system based on ZYNQ |
| CN111948434A (en) * | 2020-08-10 | 2020-11-17 | 优利德科技(中国)股份有限公司 | Waveform display method and device based on digital oscilloscope |
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2009
- 2009-03-19 CN CNA200910129235XA patent/CN101504428A/en active Pending
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102116800A (en) * | 2010-12-23 | 2011-07-06 | 优利德科技(中国)有限公司 | Multi-resistance measuring method for satisfying wireless signal output and measuring device |
| CN102116814A (en) * | 2010-12-23 | 2011-07-06 | 优利德科技(中国)有限公司 | Multifunction integrated electronic measurement method and 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 |
| CN103575949A (en) * | 2012-08-08 | 2014-02-12 | 成都爱信雅克科技有限公司 | High-accuracy handhold digital oscilloscope |
| CN103837739B (en) * | 2012-11-27 | 2016-12-21 | 江苏绿扬电子仪器集团有限公司 | Time domain and frequency domain synthesis test device |
| CN103837739A (en) * | 2012-11-27 | 2014-06-04 | 江苏绿扬电子仪器集团有限公司 | Time domain and frequency domain comprehensive test device |
| CN103995158A (en) * | 2013-02-17 | 2014-08-20 | 上海安科瑞电气股份有限公司 | Signal generator for fault locating of medical isolation power supply system |
| CN103995158B (en) * | 2013-02-17 | 2016-10-05 | 安科瑞电气股份有限公司 | A kind of medical treatment insulating power supply system failure signal for positioning generator |
| CN103149401A (en) * | 2013-03-07 | 2013-06-12 | 苏州朗高电机有限公司 | Multifunctional simple oscilloscope |
| CN103278669A (en) * | 2013-05-15 | 2013-09-04 | 西安电子科技大学 | Multifunctional portable experiment device |
| CN103278669B (en) * | 2013-05-15 | 2015-07-15 | 西安电子科技大学 | Multifunctional portable experiment device |
| CN104682943A (en) * | 2013-11-30 | 2015-06-03 | 中国科学院沈阳自动化研究所 | Device and method for generating wave signals |
| CN103675373B (en) * | 2013-12-17 | 2016-03-30 | 中国电子科技集团公司第四十一研究所 | A kind of digital signal generating method realized in FPGA |
| CN103675373A (en) * | 2013-12-17 | 2014-03-26 | 中国电子科技集团公司第四十一研究所 | Digital signal generation method achieved in FPGA |
| CN105223429B (en) * | 2014-07-04 | 2018-03-06 | 苏州万龙电气集团股份有限公司 | A kind of multi-module type configuration type detection device |
| CN105223429A (en) * | 2014-07-04 | 2016-01-06 | 苏州万龙电气集团股份有限公司 | A kind of multi-module type configuration type checkout equipment |
| CN105842509A (en) * | 2016-03-18 | 2016-08-10 | 深圳市鼎阳科技有限公司 | Universal meter and reading method |
| CN105717844A (en) * | 2016-03-29 | 2016-06-29 | 中国计量学院 | Multifunctional signal collection instrument |
| CN109307791A (en) * | 2017-07-27 | 2019-02-05 | 北京普源精电科技有限公司 | Oscillograph with FFT function |
| CN109307791B (en) * | 2017-07-27 | 2022-02-08 | 北京普源精电科技有限公司 | Oscilloscope with FFT function |
| CN107607763A (en) * | 2017-08-28 | 2018-01-19 | 武汉理工大学 | A kind of analog signal Real-time Collection transmission display system |
| CN110596496A (en) * | 2019-10-08 | 2019-12-20 | 天津博诺智创机器人技术有限公司 | Integrated multi-instrument detector |
| CN110824218A (en) * | 2019-11-18 | 2020-02-21 | 重庆邮电大学 | Digital storage oscilloscope system based on ZYNQ |
| CN110824218B (en) * | 2019-11-18 | 2022-03-22 | 重庆邮电大学 | Digital storage oscilloscope system based on ZYNQ |
| CN111948434A (en) * | 2020-08-10 | 2020-11-17 | 优利德科技(中国)股份有限公司 | Waveform display method and device based on digital oscilloscope |
| CN111948434B (en) * | 2020-08-10 | 2022-08-16 | 优利德科技(中国)股份有限公司 | Waveform display method and device based on digital oscilloscope |
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