CN102809946A - Noise immunity multichannel parameter monitoring system - Google Patents
Noise immunity multichannel parameter monitoring system Download PDFInfo
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- CN102809946A CN102809946A CN201110142283XA CN201110142283A CN102809946A CN 102809946 A CN102809946 A CN 102809946A CN 201110142283X A CN201110142283X A CN 201110142283XA CN 201110142283 A CN201110142283 A CN 201110142283A CN 102809946 A CN102809946 A CN 102809946A
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention relates to a noise immunity multichannel parameter monitoring system which comprises a test host, a monitoring host, a data acquisition device and at least one data acquisition card. A data acquisition card acquires a monitoring parameter and sends an acquired parameter signal to the monitoring host; the monitoring host receives the parameter signal and a test signal sent by the test host, judges whether the monitoring parameter exceeds an early warning limitative range and sends a monitoring parameter abnormal alarm signal; the data acquisition device receives the monitoring parameter abnormal alarm signal and forwards the alarm signal to the test host; the test host sets an interference source frequency and sends a test signal to the monitoring test; and the test host receives the alarm signal and regulates the intensity of the test signal according to the alarm signal. The noise immunity multichannel parameter monitoring system disclosed by the invention adopts few monitoring instruments, occupies a small area, is saving in manpower resources, has good accuracy and high efficiency, can be used for carrying out real-time recording of monitored data and has good repeatability.
Description
Technical field
The present invention relates to a kind of electric signal supervisory system, relate in particular to a kind of immunity to interference test with hyperchannel electrical quantity supervisory system.
Background technology
Growing along with the auto parts and components electronic technology; Increasing electronic component (like ignition coil, illuminating lamp, pilot lamp, antenna lifter, GPS GPS etc.) is applied among the car load, and the electronic component of these automobiles is being realized extremely various function (like control function, driver's comfort conditioned function and the amusement function etc. of driving safety function, deixis, anti-theft feature, driving process) at automotive interior.Yet; So many electronic components are applied among the automobile; Can produce undesired signal between each parts; (Electro Magnetic Compatibility, EMC) problem is more and more outstanding, and the antijamming capability of electronic component is also just had higher requirement to cause electromagnetic compatibility between the electronic component.Therefore, the jamproof test of electronic component has become the test of a requisite routine property.For the more parts test of parameter, need the parameter (the particularly parameter of electric signal) of monitoring and record to reach tens.
Prior art adopts oscillograph, multimeter or other data acquiring and recording equipment to monitor and recording parameters usually; The equipment, manpower and the resource that need are more; The data trackability of cost height and monitoring can not guarantee; The error of adding inevitable human factor also can cause accuracy of test to reduce, and is repeatable bad.
Summary of the invention
The object of the present invention is to provide a kind of immunity to interference hyperchannel parameter monitoring system that can improve accuracy of detection and repeatability.
A kind of immunity to interference hyperchannel parameter monitoring system; Comprise Test Host, monitoring host computer, data acquisition unit and at least one data collecting card; Said data collecting card is gathered the monitoring parameter of the multi-channel test passage of measured device, and sends to said monitoring host computer to the parameter signal that collects; Said monitoring host computer receives the parameter signal of said data collecting card transmission and the test signal that said Test Host sends; And judge whether said monitoring parameter exceeds the warning limited field; If said monitoring parameter exceeds the warning limited field, said monitoring host computer sends monitoring parameter abnormal alarm signal; Said data acquisition unit receives said monitoring parameter abnormal alarm signal, and gives said Test Host with said monitoring parameter abnormal alarm signal forwarding; Said Test Host is provided with the interference source frequency according to test request; And send said test signal to said monitoring host computer; The frequency of said test signal is said interference source frequency; Said Test Host receives said monitoring parameter abnormal alarm signal, and adjusts the intensity of said test signal according to said monitoring parameter abnormal alarm signal, and adjusted test signal is sent to said monitoring host computer.
The preferred a kind of technical scheme of above-mentioned supervisory system, said monitoring parameter are measured signal voltage amplitude, the measured signal Frequency and Amplitude of said measured device.
The preferred a kind of technical scheme of above-mentioned supervisory system, said monitoring host computer write down the frequency of said test signal, said measured signal voltage amplitude, measured signal Frequency and Amplitude.
The preferred a kind of technical scheme of above-mentioned supervisory system, said monitoring host computer is recorded in the frequency of said test signal, said measured signal voltage amplitude, measured signal Frequency and Amplitude in the TXT document.
The preferred a kind of technical scheme of above-mentioned supervisory system, said monitoring host computer adopts the mode of preset bound, judges automatically whether said monitoring parameter exceeds said warning limited field.
The preferred a kind of technical scheme of above-mentioned supervisory system; Said monitoring host computer is the computing machine that comprises USB interface, RS232 interface; Said monitoring host computer utilizes said USB interface to receive said monitoring parameter, and said monitoring host computer utilizes said RS232 interface to receive said test signal.
The preferred a kind of technical scheme of above-mentioned supervisory system, said Test Host comprises general purpose interface bus, said Test Host utilizes said general purpose interface bus to receive said monitoring parameter abnormal alarm signal.
The preferred a kind of technical scheme of above-mentioned supervisory system, said monitoring host computer sends to said data collecting card with said monitoring parameter abnormal alarm signal, and said data collecting card is given said data acquisition unit with said monitoring parameter abnormal alarm signal forwarding.
The preferred a kind of technical scheme of above-mentioned supervisory system comprises that also parameter is provided with runnable interface, be used for being provided with in advance TCH test channel way, the measured signal of every road voltage and frequency monitoring the warning limited field and be used for monitored picture.
The preferred a kind of technical scheme of above-mentioned supervisory system also comprises voltage, frequency display interface based on measured signal, is used to write down amplitude, the measured signal Frequency and Amplitude of said measured signal.
Compared with prior art; Immunity to interference hyperchannel parameter monitoring system of the present invention has been realized the information interaction of said Test Host and said monitoring host computer; Expanded the performance of said Test Host, the perfect flow process of whole monitoring system has been enriched the statement of test result; The greatly perfect quality control of test process can be given and the objective and accurate reference data of engineering staff.
Description of drawings
Fig. 1 is the structured flowchart of immunity to interference hyperchannel parameter monitoring system of the present invention.
Fig. 2 is the process flow diagram of the Test Host operation in the immunity to interference hyperchannel parameter monitoring system of the present invention.
Fig. 3 is the process flow diagram of the monitoring host computer operation in the immunity to interference hyperchannel parameter monitoring system of the present invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, the present invention is made further detailed description below in conjunction with accompanying drawing.
See also Fig. 1, Fig. 1 is the block diagram of immunity to interference hyperchannel parameter monitoring system of the present invention.Said immunity to interference hyperchannel parameter monitoring system comprises Test Host 11, monitoring host computer 12, at least one data collecting card (Data Acquisition, DAQ) 13 and data acquisition unit 14.Said data collecting card 13 is used to gather measured device (Device Under Test, the DUT) monitoring parameter of 15 multi-channel test passage, and send to said monitoring host computer 12 to the parameter signal that collects.Said monitoring host computer 12 receives the parameter signal of said data collecting card 13 transmissions and the test signal that said Test Host 11 sends; And judge whether said monitoring parameter exceeds the warning limited field; If said monitoring parameter exceeds the warning limited field, said monitoring host computer 12 sends monitoring parameter abnormal alarm signal.Said data acquisition unit 14 receives said monitoring parameter abnormal alarm signal, and gives said Test Host 11 with said monitoring parameter abnormal alarm signal forwarding.Said Test Host 11 is provided with the interference source frequency earlier according to test request; And to the said test signal of said monitoring host computer 12 transmissions; The frequency of said test signal is said interference source frequency; Said Test Host 11 receives said monitoring parameter abnormal alarm signal, and adjusts the intensity of said test signal according to said monitoring parameter abnormal alarm signal, then adjusted test signal is sent to said monitoring host computer 12.
Immunity to interference hyperchannel parameter monitoring system of the present invention couples together Test Host 11 and monitoring host computer 12, realizes the collaborative work of Test Host 11 and 12 liang of cover systems of monitoring host computer, the common monitoring of accomplishing said measured device 15.Said Test Host 11 is responsible for disturbing, and the test frequency signal that test process is used sends to said monitoring host computer 12, and applies satisfactory interference strength to the pilot signal of said measured device 15.The parameter that said monitoring host computer 12 is responsible for the said measured device 15 of monitoring changes, and record actual effect situation in time is transferred to said Test Host 11 with monitoring parameter abnormality alarm signal, thereby triggers the intensity of the said test frequency signal of said Test Host 11 adjustment.Immunity to interference hyperchannel parameter monitoring system of the present invention has been realized the information interaction of said Test Host 11 and said monitoring host computer 12; Expanded the performance of said Test Host 11; The perfect flow process of whole monitoring system; Enriched the statement of test result, the greatly perfect quality control of test process can be given and the objective and accurate reference data of engineering staff.
Do detailed description in the face of each module of immunity to interference hyperchannel parameter monitoring system of the present invention down:
Said data collecting card 13 is connected with said measured device 15 through signal wire, thereby utilizes this signal wire to gather the monitoring parameter of said measured device 15, and said monitoring parameter can be the voltage amplitude and the Frequency and Amplitude value of measured signal.Said data collecting card 13 connects said monitoring host computer 12 through the usb data line, thereby utilizes this usb data line to receive the monitoring parameter abnormal alarm signal of said monitoring host computer 12 transmissions and the monitoring parameter that receives to said monitoring host computer 12 transmissions.Said data collecting card 13 can be the multi-channel data acquisition card, like 32 circuit-switched data capture cards, thereby realizes the data acquisition to the multichannel measured signal.Further, more when the signal way that needs are measured, when a data capture card can not satisfy testing requirement, also can use simultaneously by a plurality of data collecting cards.
Preferably, said data collecting card 13 is USB-6259 high speed M series multifunctional data collecting cards that NI produces, and abbreviates DAQ6259 as.DAQ6259 is conditional application specific design on mobile application or the space, and the installation of its plug and play has farthest reduced configuration and the time is set, and can directly link to each other with screw terminal simultaneously, helps being connected of cutting down cost and simplification signal.DAQ6259 also has new NI signal data stream technology, has realized the bidirectional high speed data flow operations of similar DMA on the usb bus, and with LabVIEW, the compatible use of LabWindows/CVI, so DAQ6259 also can keep high precision under high sampling rate.DAQ6259 is furnished with 32 tunnel analog inputs (16), single channel 1.25MS/s sampling rate (amounting to 1MS/s), 4 tunnel simulation outputs (16,2.8MS/s), 48 I/O lines (32 clock lines).In immunity to interference hyperchannel parameter monitoring system of the present invention, DAQ6259 is connected with the LOADBOX of said measured device 15 through the I/O line, utilizes the analog input channel to gather the monitoring parameter of said measured device 15.DAQ6259 also connects said data acquisition unit 14 through PIN pin P1.0, GND, thereby transmits said monitoring parameter abnormal alarm signal to said data acquisition unit 14.
Immunity to interference hyperchannel parameter monitoring system of the present invention can realize 32 the tunnel or the signal testing of multichannel more; Because the monitored way of measured device 15 maybe a lot (the tens tunnel) or seldom (a few road); Therefore; Through the program setting, the distribution that can carry out sampling rate freely for all passages will effectively utilize the testing efficiency of said data collecting card 13 like this according to the monitoring needs configuration monitoring way of reality; Realize resources such as flexible configuration sampling rate and employing passage, bring great convenience for actual test.
Said data acquisition unit 14 can be the data acquisition unit of 34970A for the model that Anjelen Sci. & Tech. Inc (Agilent) produces.The 34970A data acquisition unit is the data acquisition and the switch main frame of a kind of high-performance, low price, very is suitable for data recording, data acquisition and general switch and uses with control.In immunity to interference hyperchannel parameter monitoring system of the present invention; When said monitoring host computer 12 judgements have monitoring parameter unusual; Send monitoring parameter abnormal alarm signal to said data collecting card 13; Said data collecting card 13 is transmitted to the 34970A data acquisition unit through PIN pin P1.0, GND with this alerting signal, and the 34970A data acquisition unit produces switching signal immediately and through general purpose interface bus General-Purpose Interface Bus, GPIB) sends this alerting signal to said Test Host 11; Thereby realize when monitoring parameter is unusual, the automatic adjustment function of test frequency point.
Said Test Host 11 comprises general purpose interface bus 111; Said Test Host 11 utilizes said general purpose interface bus 111 to receive said monitoring parameter abnormal alarm signal; And adjust the intensity of interference source frequency automatically according to this alerting signal, finally draw the Immunity Performance of measured device 15.Concrete, said Test Host 11 can be for comprising the computing machine of communication module, gpib interface, RS232 interface.Said Test Host 11 is connected with said monitoring host computer 12 through the RS232 data line, thereby utilizes this RS232 data line to send the test frequency signal to said monitoring host computer 12.Said communication module is used to send the test frequency signal and gives said monitoring host computer 12 and inquire about the inefficacy feedback of said monitoring host computer 12 about measured device 15.
See also Fig. 2, Fig. 2 is the process flow diagram of said Test Host 11 operations.After said Test Host 11 starts, the interference source frequency is set, promptly the test frequency signal is set, and send said test frequency signal to said monitoring host computer 12 at a Frequency point according to test request.Said monitoring host computer 12 receives the monitoring parameter signal of said data collecting card 13 transmission and the test frequency signal that said Test Host 11 transmits; And judge whether said monitoring parameter exceeds critical field; The limited field of promptly reporting to the police; If said monitoring parameter exceeds critical field, then send monitoring parameter abnormal alarm signal.Said Test Host 11 judges whether to receive said monitoring parameter abnormal alarm signal.If not, the test frequency signal of next Frequency point is set then, and the test frequency signal is sent to said monitoring host computer 12; If, then regulate the intensity of said test signal, make measured device 15 recover normal conditions, then, the intensity of the test signal of 11 record this moments of said Test Host, the monitoring parameter after said monitoring host computer 12 record measured devices 15 recover.So circulation is up to the whole frequency EOT.
Said monitoring host computer 12 can be for comprising the computing machine of USB interface, RS232 interface.The test frequency signal that monitoring parameter signal that said monitoring host computer 12 receives, the said data collecting card 13 of storage sends and said Test Host 11 send; Set up both corresponding relations and demonstration in real time; Said monitoring host computer 12 judges automatically according to preset bound whether the monitoring parameter of each road signal exceeds critical field, sends monitoring parameter abnormal alarm signal if exceed then through the said data collecting card 13 of usb data alignment.
The function of said monitoring host computer 12 can be based on the Labview Platform Implementation; Be mainly used in voltage, the monitoring of frequency parameter, and real-time display monitoring data value; And can behind EOT, accurately follow the tracks of the monitoring parameter of current frequency values, realize the trackability of monitor data.Said monitoring host computer 12 is very flexible; Through selecting for use different module to realize peak value, the monitoring of mean value also can change sampling rate and sampling number as required flexibly; The setting of upper lower limit value simultaneously is also very simple, and back-end data is stored and checked also very convenient.
See also Fig. 3, Fig. 3 is the process flow diagram of said monitoring host computer 12 operations.After said monitoring host computer 12 starts, wait for the synchronizing signal that said Test Host 11 sends, the test frequency signal that promptly said Test Host 11 sends.When the test frequency signal was not received in said monitoring host computer 12 judgements, said monitoring host computer 12 was in waiting status; When said monitoring host computer 12 is received the test frequency signal; Expression Test Host 11 has been started working; At this moment; Said monitoring host computer 12 is triggered, and said monitoring host computer 12 receives the monitoring parameter that said data collecting card 13 is gathered, and the voltage amplitude and the frequency of the pilot signal of the frequency of record test frequency point and correspondence are preserved as report data.During each parameter measurement; Said monitoring host computer 12 will adopt the restraining line of preset value to compare; The scope if monitoring parameter is above standard; Said monitoring host computer 12 will send monitoring parameter abnormal alarm signal, carries out subsequent operation after receiving said monitoring parameter abnormal alarm signal by said Test Host 11; The scope if monitoring parameter is not above standard, then said monitoring host computer 12 is got back to waiting status, waits for the test frequency signal that receives next Frequency point.So circulation is up to the whole frequency EOT.
The judgement of the standard of can accepting is carried out in monitoring host computer 12 record analyses in the supervisory system of the present invention, and the time indication of reporting to the police exactly.During for the born maximum interference strength signal (Threshold level) of the measured device of needs records; Monitoring host computer 12 also can send this maximum interference strength signal to Test Host 11; Then Test Host 11 is just adjusted automatically and is applied intensity; The accuracy that this has just improved test result has greatly reflected for the parameter real-time change of monitoring also clear and accurate.
In order to make immunity to interference hyperchannel parameter monitoring system operation of the present invention easier; Further; Immunity to interference hyperchannel parameter monitoring system of the present invention also provides man machine operation interface; Comprise that parameter is provided with runnable interface, based on voltage, frequency display interface, test result data interface and the Test Host interface of pilot signal.Said Test Host interface is used to accomplish the setting to RS232 and gpib bus, thereby makes Test Host 11 and monitoring host computer 12 form unified integral body, and collaborative work.Said test result data interface can be the TXT document; The monitor data that is about in the test process will be stored in the TXT document; Comprise information and comprise frequency test signal, measured signal voltage amplitude, measured signal Frequency and Amplitude and monitored channel number, be easy to read and editor.
Said parameter is provided with runnable interface and comprises two parts, and wherein a part is used for the warning limited field that operating personnel are provided with TCH test channel way, every road voltage and frequency monitoring in advance; Another part can be monitored picture, like the sample waveform picture, is used to show multichannel real-time sampling waveform.When alert event took place, the LED on top, interface shows will be by the green redness that is transformed into.
In based on the voltage of pilot signal, frequency display interface; When Test Host 11 begins to test; Monitoring host computer 12 writes down based on the voltage (V) of the measured signal of test frequency (F) and frequency values (f) simultaneously; As horizontal ordinate, the measured parameter amplitude is drawn V-F and f-F oscillogram as ordinate with test frequency, makes observation become easily directly perceived.Behind the EOT, this oscillogram can as a result of offer the tester together with data file, accomplishes that really both pictures and texts are excellent.
The man machine operation interface of immunity to interference hyperchannel parameter monitoring system of the present invention is developed based on graphic programming instrument Labview platform, adopts multiple bus mastering mode to come connection device to accomplish data acquisition and system communication work.The bus that is specifically related to has RS232, USB, and GPIB, with data collecting card 13, data acquisition unit 14, Test Host 11, monitoring host computer 12 connect collaborative work through these control buss.It is short to have a construction cycle, and less input, friendly interface, advantage such as workable.The measurement of voltage amplitude value and frequency values signal can be realized, the sample rate and the configuration of sampling way of multichannel can be realized, but the recording parameters measurement result, and the compounding practice platform reaches the multichannel real-time monitoring purposes of high-level efficiency.Make system have the controllability of higher automaticity and height.
Compared with prior art; Immunity to interference hyperchannel parameter monitoring system of the present invention; But the parameter that adopts hyperchannel growth data capture card 13 to monitor has been sent to monitoring host computer 12; The limit value of each road signal is set on monitoring host computer 12, data is recorded in the database of monitoring host computer 12, can accept the automatic judgement of standard through monitoring host computer 12 realization signals.Exceed limit value like signal, monitoring host computer 12 alarm Test Engineers.When the maximum interference strength signal need write down, monitoring host computer 12 also can send this maximum interference strength signal to Test Host 11.Immunity to interference hyperchannel parameter monitoring system of the present invention has realized that monitoring instrument is few, takes up an area of for a short time, and human resources are economized, and accuracy is good, and efficient is high, monitor data real time record, the characteristics of favorable repeatability.Immunity to interference hyperchannel parameter monitoring system of the present invention helps for auto parts and components both domestic and external manufacturer the high-quality detection service that meets particular requirement being provided; Help improving the quality of relevant auto parts and components product, thus the better particularly development of native country automobile industry of propelling vehicle industry.
Under situation without departing from the spirit and scope of the present invention, can also constitute many very embodiment of big difference that have.Should be appreciated that except like enclosed claim limited, the present invention is not limited at the specific embodiment described in the instructions.
Claims (10)
1. plant immunity to interference hyperchannel parameter monitoring system, it is characterized in that, comprise Test Host, monitoring host computer, data acquisition unit and at least one data collecting card;
Said data collecting card is gathered the monitoring parameter of the multi-channel test passage of measured device, and sends to said monitoring host computer to the parameter signal that collects;
Said monitoring host computer receives the parameter signal of said data collecting card transmission and the test signal that said Test Host sends; And judge whether said monitoring parameter exceeds the warning limited field; If said monitoring parameter exceeds the warning limited field, said monitoring host computer sends monitoring parameter abnormal alarm signal;
Said data acquisition unit receives said monitoring parameter abnormal alarm signal, and gives said Test Host with said monitoring parameter abnormal alarm signal forwarding;
Said Test Host is provided with the interference source frequency according to test request; And send said test signal to said monitoring host computer; The frequency of said test signal is said interference source frequency; Said Test Host receives said monitoring parameter abnormal alarm signal, and adjusts the intensity of said test signal according to said monitoring parameter abnormal alarm signal, and adjusted test signal is sent to said monitoring host computer.
2. immunity to interference hyperchannel parameter monitoring system as claimed in claim 1 is characterized in that, said monitoring parameter is the measured signal voltage amplitude and the measured signal Frequency and Amplitude of said measured device.
3. immunity to interference hyperchannel parameter monitoring system as claimed in claim 2 is characterized in that, said monitoring host computer writes down the frequency of said test signal, said measured signal voltage amplitude, said measured signal Frequency and Amplitude.
4. immunity to interference hyperchannel parameter monitoring system as claimed in claim 3 is characterized in that, said monitoring host computer is recorded in the frequency of said test signal, said measured signal voltage amplitude, said measured signal Frequency and Amplitude in the TXT document.
5. immunity to interference hyperchannel parameter monitoring system as claimed in claim 1 is characterized in that, said monitoring host computer adopts the mode of preset bound, judges automatically whether said monitoring parameter exceeds the limited field of also reporting to the police.
6. immunity to interference hyperchannel parameter monitoring system as claimed in claim 1; It is characterized in that; Said monitoring host computer is the computing machine that comprises USB interface, RS232 interface; Said monitoring host computer receives said monitoring parameter through said USB interface, and said monitoring host computer receives said test signal through said RS232 interface.
7. immunity to interference hyperchannel parameter monitoring system as claimed in claim 1 is characterized in that said Test Host comprises general purpose interface bus, and said Test Host receives said monitoring parameter abnormal alarm signal through said general purpose interface bus.
8. immunity to interference hyperchannel parameter monitoring system as claimed in claim 1; It is characterized in that; Said monitoring host computer sends to said data collecting card with said monitoring parameter abnormal alarm signal, and said data collecting card is given said data acquisition unit with said monitoring parameter abnormal alarm signal forwarding.
9. immunity to interference hyperchannel parameter monitoring system as claimed in claim 1; It is characterized in that; Comprise that also parameter is provided with runnable interface, be used for being provided with in advance said measured device TCH test channel way, the measured signal of every road voltage and frequency monitoring the warning limited field and be used for monitored picture.
10. immunity to interference hyperchannel parameter monitoring system as claimed in claim 1 is characterized in that, also comprises voltage, frequency display interface based on measured signal, is used to write down amplitude, the measured signal Frequency and Amplitude of said measured signal.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103091583A (en) * | 2013-01-15 | 2013-05-08 | 中联重科股份有限公司 | Electromagnetic compatibility analysis device, system, method for engineering machinery and engineering machinery |
| CN108172153A (en) * | 2017-12-27 | 2018-06-15 | 苏州华兴源创电子科技有限公司 | A kind of LCD module group aging test device and include its equipment |
| CN108535568A (en) * | 2018-04-18 | 2018-09-14 | 云南电网有限责任公司怒江供电局 | A kind of anti-radio frequency interference aptitude tests method and integrated system tester |
| WO2019112417A1 (en) | 2017-12-08 | 2019-06-13 | Jabil Circuit Sdn Bhd | General purpose interface bus (gpib) sniffer system and method |
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| WO2008123282A1 (en) * | 2007-03-29 | 2008-10-16 | Nec Corporation | Noise immunity evaluation apparatus |
| CN101702015A (en) * | 2009-11-02 | 2010-05-05 | 浙江省计量科学研究院 | Radio frequency electromagnetic field radiation immunity experiment test device and test method for electric energy meter |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091583A (en) * | 2013-01-15 | 2013-05-08 | 中联重科股份有限公司 | Electromagnetic compatibility analysis device, system, method for engineering machinery and engineering machinery |
| CN103091583B (en) * | 2013-01-15 | 2015-02-04 | 中联重科股份有限公司 | Electromagnetic compatibility analysis device, system, method for engineering machinery and engineering machinery |
| WO2019112417A1 (en) | 2017-12-08 | 2019-06-13 | Jabil Circuit Sdn Bhd | General purpose interface bus (gpib) sniffer system and method |
| EP3721348A4 (en) * | 2017-12-08 | 2021-09-15 | Jabil Inc. | General purpose interface bus (gpib) sniffer system and method |
| US11281611B2 (en) | 2017-12-08 | 2022-03-22 | Jabil Inc. | General purpose interface bus (GPIB) sniffer system and method |
| CN108172153A (en) * | 2017-12-27 | 2018-06-15 | 苏州华兴源创电子科技有限公司 | A kind of LCD module group aging test device and include its equipment |
| CN108172153B (en) * | 2017-12-27 | 2021-08-13 | 苏州华兴源创科技股份有限公司 | Liquid crystal module aging testing device and equipment comprising same |
| CN108535568A (en) * | 2018-04-18 | 2018-09-14 | 云南电网有限责任公司怒江供电局 | A kind of anti-radio frequency interference aptitude tests method and integrated system tester |
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