CN103197156A - Synchronous acquisition system and method for multi-channel electromagnetic field intensity - Google Patents
Synchronous acquisition system and method for multi-channel electromagnetic field intensity Download PDFInfo
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- CN103197156A CN103197156A CN2013100891891A CN201310089189A CN103197156A CN 103197156 A CN103197156 A CN 103197156A CN 2013100891891 A CN2013100891891 A CN 2013100891891A CN 201310089189 A CN201310089189 A CN 201310089189A CN 103197156 A CN103197156 A CN 103197156A
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Abstract
The invention discloses a synchronous acquisition system for multi-channel electromagnetic field intensity. The synchronous acquisition system comprises a control computer, a measurement and control host machine, a signal processing front end and an electric field sensor. The control computer is connected with the measurement and control host machine through a cable, the measurement and control host machine and a signal acquisition front end are connected through optical fibers, and the electric field sensor is directly connected with the signal acquisition front end. The synchronous acquisition system is based on virtual instrument technology, and can finish electromagnetic field intensity measurement of a plurality of areas and a plurality of measurement points, display in real time and store data. Different test requirements can be met by changing field intensity probes of different frequency range and different measuring range. In addition, the synchronous acquisition system is fast in test speed and simple to operate, test efficiency can be improved greatly, and safety of test personnel is guaranteed.
Description
Technical field
The present invention relates to the electromagnetic compatibility test field, be specifically related to a kind of synchronous acquisition system of hyperchannel electromagnetic field intensity for the electromagnetic field intensity test.
Background technology
When the shortwave that surface vessel loads, the work of microwave high power transmitter, the electromagnetic environment of its generation can cause the performance of armament systems to reduce or lose efficacy, and influences warship face safety of persons and survivability.Though theoretical calculating and Computer Simulation can be obtained the electromagnetic environment of antenna near-field, because influence, actual electromagnetic environment and the theoretical electromagnetic environment difference of otherness, warship body structure and the shipborne weapon equipment of transmitter.Be the normal operation of assurance Shipborne Electronic Equipment and warship dough figurine person's safety, must carry out real ship electromagnetic field intensity test.
Electromagnetic environment test under the present domestic real ship environment, a plurality of testers hand field intensity meter, manual record test data often, at the test zone pointwise of naval vessel appointment, frequency test one by one, test duration is long, efficient is low, and the tester is subject to the harm of electromagnetic radiation, and also there is certain influence in life-span of high-power transmitter.
This patent is compared with " the synchronous pretest device of surface vessel electromagnetic environment multiple spot (application number 200710081931.9) ", the synchronous pretest device of surface vessel electromagnetic environment multiple spot is mainly used in pretest (model measurement), its data collecting card and electric-field sensor connect to form by cable, the long cable arrangements of One's name is legion is big to the disturbance of checkout area, and the signal between cable is crosstalked mutually little field strength measurement data has been brought bigger test error, and must to measure dynamic range to the inhibition degree official post of low frequent common-mode signal less for data collecting card in addition, test repeatability is relatively poor.This patent has changed transmission medium at these problems, and adopts signal processing front end and optical transport technology to improve signal to noise ratio (S/N ratio) greatly, has realized the accurate measurement of great dynamic range field strength measurement data.
Summary of the invention
The technical problem to be solved in the present invention is in the prior art little field strength measurement data being had bigger test error, measure the dynamic range smaller defect, provide a kind of hyperchannel electromagnetic field intensity synchronous acquisition system, improve signal to noise ratio (S/N ratio), realized the accurate measurement of great dynamic range electromagnetic field intensity.
The technical solution adopted for the present invention to solve the technical problems is: the synchronous acquisition system of a kind of hyperchannel electromagnetic field intensity, comprise control computing machine, measurement and control host computer, signal processing front end and electric-field sensor, and the control computing machine is connected with measurement and control host computer by cable; Adopt optical fiber to be connected between measurement and control host computer and signals collecting front end, electric-field sensor is directly connected to the signals collecting front end.
By technique scheme, described signals collecting front end adopts the programmable instrumentation amplifier of zero shift as prime amplifier.
By technique scheme, described electric-field sensor and signal are handled the quantity of front end and are adjusted according to the quantity of measuring point, and the corresponding electric-field sensor of each measuring point and a signal are handled front end.
By technique scheme, described measurement and control host computer is handled front end with signal and is adopted single fiber bi-directional to communicate by letter.
The present invention also provides a kind of hyperchannel electromagnetic field intensity synchronous collection method of the above-mentioned synchronous acquisition system of passage electromagnetic field intensity, may further comprise the steps:
(1) the control computing machine sends the beginning test command to measurement and control host computer;
(2) after measurement and control host computer receives that the control computing machine sends the beginning test command, handle front end to all signals simultaneously and send the beginning test command;
(3) each online signal is handled the signal that front end begins to gather electric-field sensor output simultaneously, and with the data back measurement and control host computer that collects;
(4) measurement and control host computer is passed to all image data the result that the control computing machine carries out the data processing and shows processing simultaneously.
By technique scheme, described signals collecting front end adopts the programmable instrumentation amplifier of zero shift as prime amplifier.
By technique scheme, described electric-field sensor and signal are handled the quantity of front end and are adjusted according to the quantity of measuring point, and the corresponding electric-field sensor of each measuring point and a signal are handled front end.
By technique scheme, described measurement and control host computer is handled front end with signal and is adopted single fiber bi-directional to communicate by letter.
By technique scheme, each the online signal described in the step (3) is handled the electromagnetic field intensity that front end is gathered corresponding measuring point simultaneously.
By technique scheme, the control computing machine processs and displays the electromagnetic signal of each measuring point collection simultaneously in the step (4).
By technique scheme, the processing procedure described in the step (4) is scaled electric field intensity for the voltage signal with each electric-field sensor collection.
The beneficial effect that the present invention produces is:
1. native system is based on virtual instrument technique, can finish the electromagnetic field intensity of a plurality of zones, a plurality of point positions synchronously and measure, and can show in real time with data and store; Can satisfy different testing requirements by changing the field intensity probe of different frequency range, different ranges; The native system test speed is fast, and is simple to operate, can improve the testing efficiency height greatly, and ensured tester's safety.
2. the programmable instrumentation amplifier of signal processing front end employing zero shift in filtering radio frequency common-mode signal, raising signal to noise ratio (S/N ratio), has been realized the accurate measurement of great dynamic range field strength measurement data as prime amplifier.
3. measurement and control host computer and signal are handled and are adopted optical fiber as signal transmission medium between the front end, have avoided long cable to the influence of checkout area; Measurement and control host computer is handled front end with signal and is all adopted single fiber bi-directional to communicate by letter, and has reduced the layout amount of optical cable.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
As shown in Figure 1, the synchronous acquisition system of a kind of hyperchannel electromagnetic field intensity, comprise control computing machine, measurement and control host computer, signal processing front end and electric-field sensor, the control computing machine is connected with measurement and control host computer by cable, adopt optical fiber to be connected between measurement and control host computer and signals collecting front end, electric-field sensor is directly connected to the signals collecting front end.
Electric-field sensor and signal are handled the quantity of front end and can be adjusted according to the quantity of measuring point, and the corresponding electric-field sensor of each measuring point and a signal are handled front end; A plurality of electric-field sensors are arranged in a plurality of point positions of real ship zones of different, and electric-field sensor connects the signals collecting front end and is fixed on the nonmetal test bracket.Measurement and control host computer and control computing machine are placed on the place far away apart from radiation source, and the signals collecting front end connects measurement and control host computer by optical fiber, a passage of a corresponding measurement and control host computer of signals collecting front end.The signals collecting front end adopts the programmable instrumentation amplifier of zero shift as prime amplifier.
The using method of this system is as follows:
After confirming the correct connection of the synchronous acquisition system of hyperchannel electromagnetic field intensity, open control computing machine, measurement and control host computer and signal and handle the front end power supply, and running control software.
Advanced person's letter setting that works, it is consistent to guarantee to control arranging of computing machine and measurement and control host computer, opens computer port again; Select the channel number of required usefulness then, namely the actual electric-field sensor that uses is numbered, whether communicate by letter between click " test is communicated with " back inspection measurement and control host computer and each signal processing front end normal, if the tunneling traffic fault that has, whether the connection that then checks optical cable is normal, whether optical fiber head has spot etc., all communicates by letter normally until all passages.
Click " beginning to gather ", the control computing machine sends the beginning test command to measurement and control host computer, measurement and control host computer sends the beginning test command more simultaneously and handles front end to a plurality of signals, after each signal processing front end is gathered the voltage signal of electric-field sensor output simultaneously, is transferred to measurement and control host computer again.Measurement and control host computer is transferred to the control computing machine with the collection signal of all measuring points.
The control computing machine shows that if display mode be real-time, then the field intensity value is for refreshing in real time after simultaneously the voltage signal of each electric-field sensor collection being scaled electric field intensity; If display mode is maximum the maintenance, then only when current time field intensity value is bigger than a preceding field intensity value, just refresh.After frequency of operation being set and clicking " compensation ", after will compensating according to each electric-field sensor frequency response curve, the field intensity value shows again.Click " zero clearing as a result ", current demonstration field intensity value changes 0 entirely into.
Click " stopping to gather ", show that the field intensity value will remain unchanged, and stop to refresh.The selection result file path, insert test operating mode and tester after, click " saving result " and will eject the result and preserve dialog box, the measuring point of each test channel correspondence is numbered inserts, after the confirmation, can preserve data.
Click " quitting a program ", stop all to test and quitting a program.
The present invention utilizes said system, and a kind of hyperchannel electromagnetic field intensity synchronous collection method of the above-mentioned synchronous acquisition system of passage electromagnetic field intensity also is provided, and may further comprise the steps:
(1) the control computing machine sends the beginning test command to measurement and control host computer;
(2) after measurement and control host computer receives that the control computing machine sends the beginning test command, handle front end to all signals simultaneously and send the beginning test command;
(3) each online signal is handled the signal that front end begins to gather electric-field sensor output simultaneously, and with the data back measurement and control host computer that collects;
(4) measurement and control host computer is passed to all image data the result that the control computing machine carries out the data processing and shows processing simultaneously.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (10)
1. the synchronous acquisition system of hyperchannel electromagnetic field intensity comprises control computing machine, measurement and control host computer, signal processing front end and electric-field sensor, and the control computing machine is connected with measurement and control host computer by cable; It is characterized in that adopt optical fiber to be connected between measurement and control host computer and signals collecting front end, electric-field sensor is directly connected to the signals collecting front end.
2. the synchronous acquisition system of hyperchannel electromagnetic field intensity according to claim 1 is characterized in that, described signals collecting front end adopts the programmable instrumentation amplifier of zero shift as prime amplifier.
3. the synchronous acquisition system of hyperchannel electromagnetic field intensity according to claim 1 and 2, it is characterized in that, described electric-field sensor and signal are handled the quantity of front end and are adjusted according to the quantity of measuring point, and the corresponding electric-field sensor of each measuring point and a signal are handled front end.
4. the synchronous acquisition system of hyperchannel electromagnetic field intensity according to claim 1 and 2 is characterized in that, described measurement and control host computer is handled front end with signal and adopted single fiber bi-directional to communicate by letter.
5. a right to use requires the hyperchannel electromagnetic field intensity synchronous collection method of the synchronous acquisition system of 1 described hyperchannel electromagnetic field intensity, it is characterized in that, may further comprise the steps:
(1) the control computing machine sends the beginning test command to measurement and control host computer;
(2) after measurement and control host computer receives that the control computing machine sends the beginning test command, handle front end to all signals simultaneously and send the beginning test command;
(3) each online signal is handled the signal that front end begins to gather electric-field sensor output simultaneously, and with the data back measurement and control host computer that collects;
(4) measurement and control host computer is passed to all image data the result that the control computing machine carries out the data processing and shows processing simultaneously.
6. hyperchannel electromagnetic field intensity synchronous collection method according to claim 5 is characterized in that, described signals collecting front end adopts the programmable instrumentation amplifier of zero shift as prime amplifier.
7. hyperchannel electromagnetic field intensity synchronous collection method according to claim 5, it is characterized in that, described electric-field sensor and signal are handled the quantity of front end and are adjusted according to the quantity of measuring point, and the corresponding electric-field sensor of each measuring point and a signal are handled front end.
8. hyperchannel electromagnetic field intensity synchronous collection method according to claim 5 is characterized in that, described measurement and control host computer is handled front end with signal and adopted single fiber bi-directional to communicate by letter.
9. hyperchannel electromagnetic field intensity synchronous collection method according to claim 5 is characterized in that, each the online signal described in the step (3) is handled the electromagnetic field intensity that front end is gathered corresponding measuring point simultaneously.
10. hyperchannel electromagnetic field intensity synchronous collection method according to claim 5 is characterized in that, the control computing machine processs and displays the electromagnetic signal of each measuring point collection simultaneously in the step (4).
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Cited By (7)
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| CN104793163A (en) * | 2014-12-26 | 2015-07-22 | 中国舰船研究设计中心 | Method for automatically calibrating the field intensity distribution characteristics of electromagnetic reverberation chamber |
| CN105137203A (en) * | 2015-07-20 | 2015-12-09 | 中国铁道科学研究院 | Electromagnetic environment test system applied to rail transit vehicles and method thereof |
| CN106018977A (en) * | 2016-05-25 | 2016-10-12 | 四川润泽经伟信息技术有限公司 | Wireless electromagnetic signal acquisition and storage system and storage method |
| CN106168601A (en) * | 2016-09-18 | 2016-11-30 | 中国石油大学(华东) | The general AC electromagnetic field detection instrument that a kind of Multi probe is compatible |
| CN106680596A (en) * | 2016-12-01 | 2017-05-17 | 国网吉林省电力有限公司电力科学研究院 | Double-point fixed type power frequency electromagnetic field intensity combined alarm system and operation method thereof |
| CN109858360A (en) * | 2018-12-28 | 2019-06-07 | 华中科技大学 | A kind of dynamic management approach and system of fleet's electromagnetic compatibility |
| CN111768610A (en) * | 2020-06-24 | 2020-10-13 | 北京恒通安泰科技有限公司 | Data acquisition device and data acquisition method for rail weighbridge and rail weighbridge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104793163A (en) * | 2014-12-26 | 2015-07-22 | 中国舰船研究设计中心 | Method for automatically calibrating the field intensity distribution characteristics of electromagnetic reverberation chamber |
| CN105137203A (en) * | 2015-07-20 | 2015-12-09 | 中国铁道科学研究院 | Electromagnetic environment test system applied to rail transit vehicles and method thereof |
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| CN106168601A (en) * | 2016-09-18 | 2016-11-30 | 中国石油大学(华东) | The general AC electromagnetic field detection instrument that a kind of Multi probe is compatible |
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| CN109858360A (en) * | 2018-12-28 | 2019-06-07 | 华中科技大学 | A kind of dynamic management approach and system of fleet's electromagnetic compatibility |
| CN109858360B (en) * | 2018-12-28 | 2020-09-18 | 华中科技大学 | Dynamic management method and system for electromagnetic compatibility of fleet |
| CN111768610A (en) * | 2020-06-24 | 2020-10-13 | 北京恒通安泰科技有限公司 | Data acquisition device and data acquisition method for rail weighbridge and rail weighbridge |
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Application publication date: 20130710 |