CN204389022U - EMC test intensity monitor system - Google Patents
EMC test intensity monitor system Download PDFInfo
- Publication number
- CN204389022U CN204389022U CN201420796175.3U CN201420796175U CN204389022U CN 204389022 U CN204389022 U CN 204389022U CN 201420796175 U CN201420796175 U CN 201420796175U CN 204389022 U CN204389022 U CN 204389022U
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- intensity monitor
- monitor system
- electromagnetic compatibility
- shield
- module
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Abstract
The utility model discloses a kind of EMC test intensity monitor system, comprise intensity monitor device, voltage measuring apparatus; Intensity monitor device is placed in electromagnetic compatibility immunity test site, comprises shield shell, illuminant module, amplification module; Shield shell, can shield electromagnetic wave, and be provided with lightlng hole; Illuminant module, is arranged on described inside of shield casings, for light signal is converted into electric signal; Amplification module, is arranged on described inside of shield casings, outputs to shield shell outside for the electric signal amplification exported by illuminant module; Voltage measuring apparatus, is placed on outside electromagnetic compatibility immunity test site, for measuring the magnitude of voltage of the electric signal that illuminant module exports.EMC test intensity monitor system of the present utility model, monitoring light intensity accuracy is good and can not the eyesight of damage measure personnel.
Description
Technical field
The utility model relates to light fixture EMC test technology, particularly a kind of EMC test intensity monitor system.
Background technology
In the EMC test of current light fixture, carrying out quantitative test to lamp lighting parameter change in immunity experiment is technological difficulties greatly.Owing to there being stronger field intensity interference (can reach 200V/m) in electromagnetic compatibility immunity test site, as adopted conventional illuminometer to detect, illuminometer itself, by being subject to the interference testing electromagnetic field, cannot even be damaged by accurate reading.The main mode of the rear naked-eye observation of video camera shooting that adopts of the electromagnetic immunity test of current light fixture is monitored, but this mode accuracy is lower, cannot carry out quantitative record analysis, and there is damage to the eyesight of testing crew.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of EMC test intensity monitor system, and monitoring light intensity accuracy is good and can not the eyesight of damage measure personnel.
For solving the problems of the technologies described above, the EMC test intensity monitor system that the utility model provides, comprises intensity monitor device, voltage measuring apparatus;
Described intensity monitor device, is placed in electromagnetic compatibility immunity test site, comprises shield shell, illuminant module, amplification module;
Described shield shell, can shield electromagnetic wave, and be provided with lightlng hole, and light can enter into inside of shield casings from this lightlng hole;
Described illuminant module, is arranged on described inside of shield casings, for light signal is converted into electric signal;
Described amplification module, is arranged on described inside of shield casings, amplifies, output to described shield shell outside for the electric signal exported by described illuminant module;
Described voltage measuring apparatus, is placed on outside electromagnetic compatibility immunity test site, for measuring the magnitude of voltage of the electric signal that described illuminant module exports.
Preferably, described intensity monitor device, adopts powered battery;
Described amplification module, can carry out gain amplifier adjustment;
Described voltage measuring apparatus is digital multimeter;
Described shield shell is 60dB to 10kHz-18GHz shield effectiveness representative value.
Preferably, described EMC test intensity monitor system, also comprises Phototube Coupling transmitter, Phototube Coupling receiver;
Described Phototube Coupling transmitter, is placed in electromagnetic compatibility immunity test site, and is arranged on outside the shield shell of described intensity monitor device, for being light signal by transform electrical signals;
Described Phototube Coupling transmitter, its input end is connected by the electrical signal of coaxial shielding high resistant line with the amplification module of described intensity monitor device, and its output terminal is connected by the input end of optical fiber with Phototube Coupling receiver;
Described Phototube Coupling receiver, is placed on outside electromagnetic compatibility immunity test site, changes electric signal into for the light signal produced by Phototube Coupling transmitter;
Described voltage measuring apparatus, is placed on outside electromagnetic compatibility immunity test site, for measuring the magnitude of voltage of the electric signal that described Phototube Coupling receiver exports.
Preferably, the electrical signal of described amplification module, is connected with coaxial shielding high resistant line by coaxial adapter;
Described coaxial adapter, be BNC coaxial interface, its shell and described shield shell are electrically connected.
Preferably, described illuminant module, adopts photodiode.
Preferably, described photodiode, working range covering visible light wavelength 390nm to 780nm.
Preferably, described EMC test intensity monitor system, also comprises computer for controlling;
Described computer for controlling, is placed on outside electromagnetic compatibility immunity test site, is communicated by control bus with described voltage measuring apparatus;
Described computer for controlling, is provided with electromagnetic compatibility test module;
Described electromagnetic compatibility test module, for recording and storing the detection data that described voltage measuring apparatus sends, and controls the work of electromagnetic compatibility test equipment.
Preferably, described control bus is USB, LAN, GPIB or RS232 data bus.。
EMC test intensity monitor system of the present utility model, light signal is converted into the electric signal being easy to measure by the intensity monitor device be placed in electromagnetic compatibility immunity test site, and detected by the voltage measuring apparatus be placed on outside electromagnetic compatibility immunity test site, avoid the problem that testing crew with the naked eye monitors poor accuracy that light intensity brings and deteriorated vision.And because the strong monitoring device be placed in electromagnetic compatibility immunity test site adopts shielding construction, and by powered battery, have stronger anti-electromagnetic interference capability, normally work under the interference field strength of 200V/m, light-intensity test accuracy is high.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical solution of the utility model, below the accompanying drawing used required for the utility model is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is EMC test intensity monitor system one embodiment schematic diagram of the present utility model;
Fig. 2 is the intensity monitor device schematic diagram of EMC test intensity monitor system one embodiment of the present utility model;
Fig. 3 is that EMC test intensity monitor system of the present utility model is for monitoring the schematic diagram of light intensity;
Fig. 4 is that EMC test intensity monitor system of the present utility model is for monitoring the schematic diagram of wheel speed;
Fig. 5 is the schematic diagram of EMC test intensity monitor system of the present utility model for monitors block movement rate.
Embodiment
Below in conjunction with accompanying drawing, carry out clear, complete description to the technical scheme in the utility model, obviously, described embodiment is a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belong to the scope of the utility model protection.
Embodiment one
EMC test intensity monitor system, as shown in Figure 1, comprises intensity monitor device, voltage measuring apparatus 10;
Described intensity monitor device, is placed in electromagnetic compatibility immunity test site, comprises shield shell 1, illuminant module 2, amplification module 3;
Described shield shell 1, can shield electromagnetic wave, and is provided with lightlng hole 11, and it is inner that light can enter into shield shell 1 from this lightlng hole 11;
Described illuminant module 2, is arranged on described shield shell 1 inner, for light signal is converted into electric signal;
Described amplification module 3, is arranged on described shield shell 1 inner, amplifies, output to described shield shell 1 outside for the electric signal exported by described illuminant module 2;
Described voltage measuring apparatus 10, is placed on outside electromagnetic compatibility immunity test site, for measuring the magnitude of voltage of the electric signal that described illuminant module 2 exports.
Preferably, described intensity monitor device, adopts powered battery.
Preferably, described amplification module 3, can carry out gain amplifier adjustment.
Preferably, described voltage measuring apparatus 10, is digital multimeter (such as, 6 half or more digital multimeter).
Preferably, described shield shell 1 pair of 10kHz-18GHz shield effectiveness representative value is 60dB.
The EMC test intensity monitor system of embodiment one, light signal is converted into the electric signal being easy to measure by the intensity monitor device be placed in electromagnetic compatibility immunity test site, and detected by the voltage measuring apparatus be placed on outside electromagnetic compatibility immunity test site, avoid the problem that testing crew with the naked eye monitors poor accuracy that light intensity brings and deteriorated vision.And because the strong monitoring device be placed in electromagnetic compatibility immunity test site adopts shielding construction, and by powered battery, have stronger anti-electromagnetic interference capability, normally work under the interference field strength of 200V/m, light-intensity test accuracy is high.
Embodiment two
Based on embodiment one, EMC test intensity monitor system also comprises Phototube Coupling transmitter 7, Phototube Coupling receiver 8;
Described Phototube Coupling transmitter 7, is placed in electromagnetic compatibility immunity test site, and is arranged on outside the shield shell 1 of described intensity monitor device, for being light signal by transform electrical signals;
Described Phototube Coupling transmitter 7, its input end is connected by the electrical signal of coaxial shielding high resistant line with the amplification module 3 of described intensity monitor device, and its output terminal is connected by the input end of optical fiber with Phototube Coupling receiver 8;
Described Phototube Coupling receiver 8, is placed on outside electromagnetic compatibility immunity test site, changes electric signal into for the light signal produced by Phototube Coupling transmitter 7;
Described voltage measuring apparatus 10, is placed on outside electromagnetic compatibility immunity test site, for measuring the magnitude of voltage of the electric signal that described Phototube Coupling receiver 8 exports.
Preferably, the electrical signal of described amplification module 3, is connected with coaxial shielding high resistant line by coaxial adapter 4;
Described coaxial adapter 4, be BNC coaxial interface or other coaxial interfaces, coaxial adapter 4 shell and shield shell 1 have good electrical connection, can improve the anti-electromagnetic interference capability of EMC test intensity monitor device further.
The EMC test intensity monitor system of embodiment two, be light signal by being placed on Phototube Coupling transmitter 7 in electromagnetic compatibility immunity test site by the transform electrical signals that intensity monitor device exports, beyond Optical Fiber Transmission to pilot region, Phototube Coupling receiver 8 changes the light signal that Phototube Coupling transmitter sends into electric signal, measure being arranged on the control area outside electromagnetic compatibility immunity test site, light-intensity test can be realized away from electromagnetic compatibility immunity test site, reduce the somatic damage to testing crew.
Embodiment three
Based on embodiment one, two or three EMC test intensity monitor system, as shown in Figure 2, the illuminant module 2 of described intensity monitor device, adopts photodiode D; Preferably, working range covering visible light wavelength 390nm to the 780nm of described photodiode D.
The amplification module 3 of intensity monitor device, comprises the first resistance R1, the second resistance R2, the 3rd resistance R3, variable resistor Rf, operational amplifier;
Described photodiode D, negative terminal connects cell voltage, one end of positive termination first resistance R1 and the second resistance R2;
Described first resistance R1, other end ground connection;
Described second resistance R2, the positive input terminal of operational amplifier described in another termination;
Described 3rd resistance R3, is connected on the negative input end of described operational amplifier with between ground;
Described variable resistor Rf, is connected on the negative input end of described operational amplifier with between output terminal.
When light intensity is 0, photodiode D ends, and the positive terminal voltage Vs of photodiode D is 0; After photodiode D receives light intensity, inverse current increases, and the positive terminal voltage Vs of photodiode D increases with the enhancing of light intensity, and the positive terminal voltage Vs of photodiode D, through amplification module 3, obtains output voltage V
0
The output voltage V of amplification module 3
0with the conversion relation of the positive terminal voltage Vs of photodiode D be:
by regulating variable resistor R
f, namely to the output voltage V of amplification module 3
0regulate.
The EMC test intensity monitor system of embodiment three, the measuring accuracy of intensity monitor device determines primarily of the photovoltaic property of the photodiode D being built in shield shell, controllability is comparatively strong, by rational type selecting and circuit design, measuring error can be controlled
+within 5%.
Embodiment four
Based on embodiment one, two or three, EMC test intensity monitor system also comprises computer for controlling 12;
Described computer for controlling 12, is placed on outside electromagnetic compatibility immunity test site, is communicated with described voltage measuring apparatus 10 by control bus.
Described computer for controlling 12, is provided with electromagnetic compatibility test module;
Described electromagnetic compatibility test module, for recording and storing the detection data that described voltage measuring apparatus 10 sends, and controls the work of electromagnetic compatibility test equipment.
Preferably, described control bus is USB, LAN, GPIB, RS232 or other data buss.
The EMC test intensity monitor system of embodiment four, voltage measuring apparatus 10 by the data that record by bus transfer to computer for controlling 12, computer for controlling 12 records and stores and detects data, and control the work of electromagnetic compatibility test equipment, test macro and supervisory system interlock, realize the automatic capturing of electromagnetic susceptibility.The EMC test intensity monitor system of embodiment three, light intensity parameter is converted into the voltage signal being easy to measure, and carry out record by digital multimeter and computer for controlling, the quantitative record analysis of optical parameter can be carried out in the test of electromagnetic compatibility RF protected ratio, and avoid the problem that testing crew with the naked eye monitors poor accuracy and the deteriorated vision brought.
EMC test intensity monitor system of the present utility model, application extension is stronger, except monitoring light intensity, directional light sources (laser) can also be coordinated to realize wheel speed, move back and forth the monitorings of physical quantity in EMC test such as thing block movement rate.
Carry out the method for near-end intensity monitor, as shown in Figure 3, directly intensity monitor device is positioned in EMC test region, the light intensity of measured light is converted into voltage signal by intensity monitor device, by high resistant line and photoisolator, be connected to beyond electromagnetic compatibility immunity test site, after two times transfer, undertaken measuring and record by voltage measuring apparatus (such as, digital oscilloscope).The method is comparatively applicable to the monitoring of single light source.
Carry out the method for wheel speed monitoring, as shown in Figure 4, adopt generating laser vertically according to rotate impeller, wheel another measuring put intensity monitor device, and with generating laser horizontal alignment.Because laser can periodically be blocked by rotary blade, record voltage by voltage measuring apparatus (such as, digital oscilloscope) and also can be rendered as the square wave that low and high level replaces, logical thus output side wave frequency F can be recorded.The rotating speed V of impeller can be extrapolated by F:
V＝60*F/N
V: wheel speed
F: export square wave frequency
N: the blade quantity of impeller
Carry out the method moving back and forth the monitoring of thing block movement rate, as shown in Figure 5, adopt generating laser vertically according to the thing block moved back and forth, intensity monitor device is put in another measuring of thing block, and with generating laser horizontal alignment, laser blocks owing to periodically can be reciprocated thing block, when being blocked by voltage measuring apparatus (such as, digital oscilloscope) to record voltage jump be low level, when thing block leaves laser range of exposures, it is high level that voltage measuring apparatus records voltage jump, the low level duration T d that voltage can record output is recorded by voltage measuring apparatus, the movement rate V moving back and forth thing block can be extrapolated by Td:
V=D/Td, D are the biggest size of element that thing block is parallel to direction of motion, and Td is the output voltage low level duration.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacements, improvement etc., all should be included within scope that the utility model protects.
Claims (8)
1. an EMC test intensity monitor system, is characterized in that, comprises intensity monitor device, voltage measuring apparatus;
Described intensity monitor device, is placed in electromagnetic compatibility immunity test site, comprises shield shell, illuminant module, amplification module;
Described shield shell, can shield electromagnetic wave, and be provided with lightlng hole, and light can enter into inside of shield casings from this lightlng hole;
Described illuminant module, is arranged on described inside of shield casings, for light signal is converted into electric signal;
Described amplification module, is arranged on described inside of shield casings, amplifies, output to described shield shell outside for the electric signal exported by described illuminant module;
Described voltage measuring apparatus, is placed on outside electromagnetic compatibility immunity test site, for measuring the magnitude of voltage of the electric signal that described illuminant module exports.
2. EMC test intensity monitor system according to claim 1, is characterized in that,
Described intensity monitor device, adopts powered battery;
Described amplification module, can carry out gain amplifier adjustment;
Described voltage measuring apparatus is digital multimeter;
Described shield shell is 60dB to 10kHz-18GHz shield effectiveness representative value.
3. EMC test intensity monitor system according to claim 1, is characterized in that,
Described EMC test intensity monitor system, also comprises Phototube Coupling transmitter, Phototube Coupling receiver;
Described Phototube Coupling transmitter, is placed in electromagnetic compatibility immunity test site, and is arranged on outside the shield shell of described intensity monitor device, for being light signal by transform electrical signals;
Described Phototube Coupling transmitter, its input end is connected by the electrical signal of coaxial shielding high resistant line with the amplification module of described intensity monitor device, and its output terminal is connected by the input end of optical fiber with Phototube Coupling receiver;
Described Phototube Coupling receiver, is placed on outside electromagnetic compatibility immunity test site, changes electric signal into for the light signal produced by Phototube Coupling transmitter;
Described voltage measuring apparatus, is placed on outside electromagnetic compatibility immunity test site, for measuring the magnitude of voltage of the electric signal that described Phototube Coupling receiver exports.
4. EMC test intensity monitor system according to claim 3, is characterized in that,
The electrical signal of described amplification module, is connected with coaxial shielding high resistant line by coaxial adapter;
Described coaxial adapter, be BNC coaxial interface, its shell and described shield shell are electrically connected.
5. EMC test intensity monitor system according to claim 1, is characterized in that,
Described illuminant module, adopts photodiode.
6. EMC test intensity monitor system according to claim 5, is characterized in that,
Described photodiode, working range covering visible light wavelength 390nm to 780nm.
7. the EMC test intensity monitor system according to any one of claim 1 to 6, is characterized in that,
Described EMC test intensity monitor system, also comprises computer for controlling;
Described computer for controlling, is placed on outside electromagnetic compatibility immunity test site, is communicated by control bus with described voltage measuring apparatus;
Described computer for controlling, is provided with electromagnetic compatibility test module;
Described electromagnetic compatibility test module, for recording and storing the detection data that described voltage measuring apparatus sends, and controls the work of electromagnetic compatibility test equipment.
8. EMC test intensity monitor system according to claim 7, is characterized in that,
Described control bus is USB, LAN, GPIB or RS232 data bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420796175.3U CN204389022U (en) | 2014-12-15 | 2014-12-15 | EMC test intensity monitor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420796175.3U CN204389022U (en) | 2014-12-15 | 2014-12-15 | EMC test intensity monitor system |
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| Publication Number | Publication Date |
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| CN204389022U true CN204389022U (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420796175.3U Expired - Fee Related CN204389022U (en) | 2014-12-15 | 2014-12-15 | EMC test intensity monitor system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675961A (en) * | 2016-02-19 | 2016-06-15 | 广州市诚臻电子科技有限公司 | Voltage testing device and system capable of bearing high electromagnetic radiation field, and application |
| CN105758519A (en) * | 2016-02-19 | 2016-07-13 | 广州市诚臻电子科技有限公司 | Light intensity test device and light intensity test system capable of bearing high electromagnetic radiation field and applications thereof |
| CN107807284A (en) * | 2017-12-01 | 2018-03-16 | 广州市诚臻电子科技有限公司 | A kind of full Chassis dynamometer device for automotive EMC detection |
| CN112737701A (en) * | 2020-12-30 | 2021-04-30 | 石家庄科林电气股份有限公司 | Equipment for filtering interference in communication line in electromagnetic compatibility test |
-
2014
- 2014-12-15 CN CN201420796175.3U patent/CN204389022U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675961A (en) * | 2016-02-19 | 2016-06-15 | 广州市诚臻电子科技有限公司 | Voltage testing device and system capable of bearing high electromagnetic radiation field, and application |
| CN105758519A (en) * | 2016-02-19 | 2016-07-13 | 广州市诚臻电子科技有限公司 | Light intensity test device and light intensity test system capable of bearing high electromagnetic radiation field and applications thereof |
| CN105758519B (en) * | 2016-02-19 | 2019-03-08 | 广州市诚臻电子科技有限公司 | A kind of light intensity test device, system and its application for bearing high electromagnetic radiation field |
| CN107807284A (en) * | 2017-12-01 | 2018-03-16 | 广州市诚臻电子科技有限公司 | A kind of full Chassis dynamometer device for automotive EMC detection |
| CN107807284B (en) * | 2017-12-01 | 2023-09-29 | 广州市诚臻电子科技有限公司 | Full chassis dynamometer for automobile electromagnetic compatibility detection |
| CN112737701A (en) * | 2020-12-30 | 2021-04-30 | 石家庄科林电气股份有限公司 | Equipment for filtering interference in communication line in electromagnetic compatibility test |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20191215 |