CN104638906A - Electromagnetic compatible device of continuous-wave instrumentation radar - Google Patents
Electromagnetic compatible device of continuous-wave instrumentation radar Download PDFInfo
- Publication number
- CN104638906A CN104638906A CN201510051530.3A CN201510051530A CN104638906A CN 104638906 A CN104638906 A CN 104638906A CN 201510051530 A CN201510051530 A CN 201510051530A CN 104638906 A CN104638906 A CN 104638906A
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- module
- common mode
- inductance
- electromagnetic compatibility
- continuous wave
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
Abstract
The invention relates to an electromagnetic compatible device of continuous-wave instrumentation radar. The input end of the electromagnetic compatible device is connected with a power module, and the output end of the electromagnetic compatible device is connected with a transmitting module. The electromagnetic compatible device comprises an anti-interference module, a stray eliminating module and a diode. The anti-interference module is used for suppressing the common mode interference produced by the power supply module; the stray eliminating module is used for eliminating the influence on the transmitting spectrum of the transmitting module, caused by the anti-interference module, and eliminating the stays near the switching frequency in the transmitting spectrum of the transmitting module; and the diode is used for protecting the transmitting module. By rationally designing the parameters of common mode inductance, filter inductance and filter capacitance, the electromagnetic compatible device of the continuous-wave instrumentation radar effectively suppresses the common mode interference and differential mode interference produced by the switching power supply, and solves the problems of spurious spectrum of the radar transmitting module caused by EMI (Electro-Magnetic Interference) of the switching power supply and the problem that the sensitivity of a receiver is reduced.
Description
Technical field
The present invention relates to a kind of electromagnetic compatibility device of continuous wave instrumentation radar, belong to Radar Technology field.
Background technology
Have benefited from the development of power technology, radar power supply also changes the Switching Power Supply generally adopted now into from very heavy linear power supply, it is even less that shared volume also reduces to linear power supply 1/10, but due to a large amount of employings of Switching Power Supply, also bring the problem of Electro Magnetic Compatibility (EMC) aspect to radar.
According to continuous wave measuring principle, in Doppler frequency range, should not there is interference signal, radar can be caused the erroneous judgement of target if there is interference signal, radar power declines to a great extent and even can not work.Because switching device is operated in high frequency on off operating mode, high speed instantaneous course inherently electromagnetic interference (EMI) source of high frequency, the EMI signal that it produces has very wide frequency range, if EMI signal drops in Doppler frequency range, then may affect the normal work of radar.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of Switching Power Supply that adopts and powers, and suppresses to reach the electromagnetic compatibility device of the continuous wave instrumentation radar of the object reducing or eliminate EMI interference signal by the common mode disturbances that produces Switching Power Supply and differential mode interference simultaneously.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of electromagnetic compatibility device of continuous wave instrumentation radar, and described electromagnetic compatibility device input is connected with power module, and output is connected with transmitter module; Comprise connect successively immunity module, eliminate spuious module and diode;
The common mode disturbances of described immunity module for suppressing power module to produce;
The spuious module of described elimination is for eliminating because immunity module is on the impact of transmitter module emission spectrum, and spuious near the emission spectrum breaker in middle frequency eliminating transmitter module;
Described diode user protects transmitter module.
The invention has the beneficial effects as follows: the present invention is by the parameter of appropriate design common mode inductance, filter inductance and filter capacitor, the common mode disturbances that can effectively suppress Switching Power Supply to produce and differential mode interference, and can reduce because switch power supply EMI disturbs the problem of the sensitivity decrease of the spuious problem of radar emission module frequency spectrum and the receiver caused, simultaneously the method adds transient voltage suppression diode at transmitter module end and carries when transmitter module loads suddenly and cuts the due to voltage spikes that moment produces by filter inductance L3 and stray inductance for suppressing, and ensures transmitter module use safety.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described immunity module comprises the first common mode inductance, Switching Power Supply and the second common mode inductance that are electrically connected successively.
Further, the spuious module of described elimination comprises filter inductance and filter capacitor;
Described filter inductance one end is connected with the output of the second common mode inductance, and the other end is connected with filter capacitor;
Described filter capacitor is connected with filter inductance with diode rear one end parallel with one another, other end ground connection.
Further, described first common mode inductance is that 300V inputs common mode inductance, for receiving the 300V voltage of power module input.
Further, the 300V voltage transitions of input is that 12V voltage outputs to the second common mode inductance by described Switching Power Supply.
Further, described second common mode inductance is that 12V inputs common mode inductance.
Further, described diode adopts transient voltage suppressor diode.
Further, described transient voltage suppressor diode is for suppressing when transmitter module loads suddenly or cut the due to voltage spikes that the moment of carrying produces by filter inductance and stray inductance, and then protection transmitter module.
Accompanying drawing explanation
Fig. 1 is the electromagnetic compatibility device electrical schematic diagram of a kind of continuous wave instrumentation radar described in the specific embodiment of the invention.
In accompanying drawing, the list of parts representated by each label is as follows:
1, immunity module, 2, eliminate spuious module, 3, Switching Power Supply, V1, diode, L1, the first common mode inductance, L2, the second common mode inductance, L3, filter inductance, C1, filter capacitor.
Embodiment
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, be the electromagnetic compatibility device of a kind of continuous wave instrumentation radar described in the specific embodiment of the invention, described electromagnetic compatibility device input is connected with power module, and output is connected with transmitter module; Comprise connect successively immunity module 1, eliminate spuious module 2 and diode V1;
The common mode disturbances of described immunity module 1 for suppressing power module to produce;
The spuious module 2 of described elimination is for eliminating because immunity module is on the impact of transmitter module emission spectrum, and spuious near the emission spectrum breaker in middle frequency eliminating transmitter module;
Described diode V1 user protects transmitter module.
Described immunity module 1 comprises the first common mode inductance L1, Switching Power Supply 3 and the second common mode inductance L2 that are electrically connected successively.
The spuious module 2 of described elimination comprises filter inductance L3 and filter capacitor C1;
Described filter inductance L3 one end is connected with the output of the second common mode inductance, and the other end is connected with filter capacitor C1;
Described filter capacitor C1 is connected with filter inductance with diode rear one end parallel with one another, other end ground connection.
Specific embodiment comprises 300V and inputs common mode inductance L1,12V output common mode inductance L 2, filter inductance L3, filter capacitor C1 and transient voltage suppression diode V1.
Described 300V inputs common mode inductance L1 and is connected with power module 300V input, 12V output common mode inductance L 2 is connected with power module 12V output, filter inductance L3 one end is connected with L2 positive output end, one end is connected with the anode of filter capacitor C1, output filter capacitor C1 negative terminal is connected to the ground, and transient voltage suppression diode V1 inputs in parallel with output filter capacitor C1 and transmitter module.
Described 300V inputs common mode inductance L1 for suppressing the common mode disturbances produced from power module 300V input.
Described 12V output common mode inductance L 2 is for suppressing the common mode disturbances produced from power module 12V output.
Described filter inductance L3 and filter capacitor C1 eliminates because Switching Power Supply ripple is on the impact of transmitter module emission spectrum jointly, eliminate transmitter module emission spectrum breaker in middle frequency near spuious.
Described transient voltage suppression diode V1 is used for when transmitter module loads suddenly and cut the due to voltage spikes carrying and produced by filter inductance L3 and stray inductance instantaneously, protection transmitter module.
For a kind of continuous wave instrumentation radar electric capacity compatibling problem solution of the present embodiment.This method inputs common mode inductance L1 by 300V, and 12V output common mode inductance L 2, filter inductance L3, filter capacitor C1 and transient voltage suppression diode V1 form.Wherein 300V input common mode inductance L1 is connected with power module 300V input, 12V output common mode inductance L 2 is connected with power module 12V output, filter inductance L3 one end is connected with L2 positive output end, one end is connected with the anode of filter capacitor C1, output filter capacitor C1 negative terminal is connected to the ground, and transient voltage suppression diode V1 inputs in parallel with output filter capacitor C1 and transmitter module.300V inputs common mode inductance L1 and adopts a model to be the ultracrystalline magnetic core of DWUL2815, is enclosed in the same way and around 5 form by 300V+ and 300V-two wires; 12V output common mode inductance L 2 adopts four models to be the ultracrystalline magnetic core of DWUL6420, after four magnetic core parallel connections by+12V and GND two wires in the same way and form around 10 circles; Filter inductance L3 adopts two models to be that the inductance in parallel of DCI 260uH/50AC/T3004J forms; The electrochemical capacitor that filter capacitor C1 is JCD293H-25V-22000UF-M by 10 models is formed in parallel; The model of transient voltage suppression diode V1 is GS 1.5KE15A.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. an electromagnetic compatibility device for continuous wave instrumentation radar, is characterized in that, described electromagnetic compatibility device input is connected with power module, and output is connected with transmitter module; Comprise connect successively immunity module, eliminate spuious module and diode;
The common mode disturbances of described immunity module for suppressing power module to produce;
The spuious module of described elimination is for eliminating because immunity module is on the impact of transmitter module emission spectrum, and spuious near the emission spectrum breaker in middle frequency eliminating transmitter module;
Described diode user protects transmitter module.
2. the electromagnetic compatibility device of a kind of continuous wave instrumentation radar according to claim 1, is characterized in that, described immunity module comprises the first common mode inductance, Switching Power Supply and the second common mode inductance that are electrically connected successively.
3. the electromagnetic compatibility device of a kind of continuous wave instrumentation radar according to claim 1, is characterized in that, the spuious module of described elimination comprises filter inductance and filter capacitor;
Described filter inductance one end is connected with the output of the second common mode inductance, and the other end is connected with filter capacitor;
Described filter capacitor is connected with filter inductance with diode rear one end parallel with one another, other end ground connection.
4. the electromagnetic compatibility device of a kind of continuous wave instrumentation radar according to claim 2, is characterized in that, described first common mode inductance is that 300V inputs common mode inductance, for receiving the 300V voltage of power module input.
5. the electromagnetic compatibility device of a kind of continuous wave instrumentation radar according to claim 2, is characterized in that, the 300V voltage transitions of input is that 12V voltage outputs to the second common mode inductance by described Switching Power Supply.
6. the electromagnetic compatibility device of a kind of continuous wave instrumentation radar according to claim 2, is characterized in that, described second common mode inductance is that 12V inputs common mode inductance.
7. the electromagnetic compatibility device of a kind of continuous wave instrumentation radar according to any one of claim 1-6, is characterized in that, described diode adopts transient voltage suppressor diode.
8. the electromagnetic compatibility device of a kind of continuous wave instrumentation radar according to claim 7; it is characterized in that; described transient voltage suppressor diode is for suppressing when transmitter module loads suddenly or cut the due to voltage spikes that the moment of carrying produces by filter inductance and stray inductance, and then protection transmitter module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510051530.3A CN104638906A (en) | 2015-01-30 | 2015-01-30 | Electromagnetic compatible device of continuous-wave instrumentation radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510051530.3A CN104638906A (en) | 2015-01-30 | 2015-01-30 | Electromagnetic compatible device of continuous-wave instrumentation radar |
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| CN104638906A true CN104638906A (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510051530.3A Pending CN104638906A (en) | 2015-01-30 | 2015-01-30 | Electromagnetic compatible device of continuous-wave instrumentation radar |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2541705A (en) * | 2015-08-27 | 2017-03-01 | Htip Ltd | Filter for a power network |
| US10298113B2 (en) | 2017-02-24 | 2019-05-21 | Htip Limited | Filter for a power network |
| CN110808680A (en) * | 2019-11-11 | 2020-02-18 | 南京宏泰半导体科技有限公司 | Direct current EMI filter structure for power adapter |
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| US7872527B2 (en) * | 2009-03-31 | 2011-01-18 | Qualcomm, Incorporated | Power supply control system and method with variable post-regulation |
| CN101924461A (en) * | 2009-06-16 | 2010-12-22 | 池万义 | Direct connection preventing voltage converter of electromobile |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2541705A (en) * | 2015-08-27 | 2017-03-01 | Htip Ltd | Filter for a power network |
| GB2541705B (en) * | 2015-08-27 | 2018-02-14 | Htip Ltd | Filter for a power network |
| US10298113B2 (en) | 2017-02-24 | 2019-05-21 | Htip Limited | Filter for a power network |
| CN110808680A (en) * | 2019-11-11 | 2020-02-18 | 南京宏泰半导体科技有限公司 | Direct current EMI filter structure for power adapter |
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Application publication date: 20150520 |