CN103346548B - Electric discharge monitoring and protecting circuit in a kind of high-voltage ion purifier - Google Patents

Electric discharge monitoring and protecting circuit in a kind of high-voltage ion purifier Download PDF

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Publication number
CN103346548B
CN103346548B CN201310281809.1A CN201310281809A CN103346548B CN 103346548 B CN103346548 B CN 103346548B CN 201310281809 A CN201310281809 A CN 201310281809A CN 103346548 B CN103346548 B CN 103346548B
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China
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module
sampling
electric
signal
voltage ion
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CN201310281809.1A
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Chinese (zh)
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CN103346548A (en
Inventor
刘义刚
章燕
冉宏宇
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苏州贝昂科技有限公司
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Priority to CN201310281809.1A priority Critical patent/CN103346548B/en
Publication of CN103346548A publication Critical patent/CN103346548A/en
Priority claimed from US14/895,243 external-priority patent/US9735568B2/en
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Publication of CN103346548B publication Critical patent/CN103346548B/en

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Abstract

The invention provides the electric discharge monitoring and protecting circuit in a kind of high-voltage ion purifier, comprising: sampling module is articulated in the positive and negative two ends of high-voltage ion purifier load plasma electric field, the discharge signal of sampling plasma electric field; Sampling protection module is connected on the two ends of sampling module; Output protection module is in parallel with sampling module carries out pressure limiting to sampling module; Shaping Module flows to the first input end comparing amplification module after being used for that the discharge signal that sampling module is sampled is carried out rectification; Relatively the second input of amplification module connects reference signal, compares amplification module and electric discharge is carried out comparing with reference signal, export to controller after being amplified by comparative result; Controller controls the size of plasma electric field by comparative result.Can the more small discharge signal in monitoring load two ends.Duplicate protection is carried out for sampling module, avoids discharge signal for the impact of sampling module.The discharge signal that Real-Time Monitoring is faint, avoids the lasting generation of electric discharge and exception occurs.

Description

Electric discharge monitoring and protecting circuit in a kind of high-voltage ion purifier
Technical field
The present invention relates to electronic circuit technology field, the electric discharge monitoring and protecting circuit particularly in a kind of high-voltage ion purifier.
Background technology
At present, general clarifier adopts high efficiency particle air filter (HEPA, HighEfficiencyParticulateAirFilter) or the physical technique such as washing carry out air cleaning, very limited to the removal efficiency of pellet like this, and its adsorption effect of HEPA screen pack changes in time, after dust accretions, decay very serious.Therefore, in order to solve the deficiency of above clarifier, present high pressure plasma or high-voltage electrostatic dust separator are subject to client and pay close attention to more.
But electrion phenomenon easily appears in high-voltage ion purifier, so in use, be necessary carry out monitoring to electrion phenomenon and protect in real time.
Clarifier discharges: when high-voltage ion purifier work, there is a space high-voltage, in time flying into the particle such as dust, soft flocks of larger particles in high voltage electric field, changes the characteristic of moment electric field, will produce crack crack discharging sound, claims clarifier electric discharge.
During clarifier electric discharge, generation noise effect is subject to the use sense of consumer, continuous discharge simultaneously also causes safe hidden danger, so will carry out detecting when slight electric discharge and do process in time, as adjusted electric field level in time according to discharge scenario, continuous discharge can be avoided to occur.
Now, the monitoring for electrion phenomenon mainly contains two kinds of modes.
First kind of way: directly install earth leakage protective device.This earth leakage protective device can detect extreme case, namely just can detect close to during short-circuit condition when discharge sustain deteriorates into, be equivalent to do short-circuit detecting.
Obviously, this discharge examination does not have good protective effect, when electrion is not continuation, but during discontinuity, cannot detect electric discharge and then cannot protect in time.
The second way: only directly detect discharge signal, when discharge signal is higher than certain reference signal, just implements discharge prevention.But general discharge signal is fainter, this protected mode only when generation is acutely discharged, just can effectively can be protected.
In sum, how to provide a kind of electric discharge monitoring and protecting circuit for high-voltage ion purifier, can carry out monitoring and protecting to electric discharge effectively is in time those skilled in the art's technical issues that need to address.
Summary of the invention
The embodiment of the present invention provides the circuit of the electric discharge monitoring and protecting in a kind of high-voltage ion purifier, can carry out monitoring and protecting effectively in time to electric discharge.
The embodiment of the present invention provides the circuit of the electric discharge monitoring and protecting in a kind of high-voltage ion purifier, comprising: sampling module, sampling protection module, output protection module, Shaping Module, compare amplification module and controller;
Described sampling module is articulated in the positive and negative two ends of high-voltage ion purifier load plasma electric field, for the discharge signal of plasma electric field of sampling;
Described sampling protection module is connected on the two ends of described sampling module;
Described output protection module is in parallel with described sampling module, for carrying out pressure limiting to described sampling module;
Described Shaping Module, flows to the described first input end comparing amplification module after the discharge signal for being sampled by described sampling module carries out rectification;
Described the second input comparing amplification module connects reference signal, and described electric discharge is carried out comparing with reference signal by the described amplification module that compares, and exports to controller after being amplified by comparative result;
Described controller, for being controlled the size of described plasma electric field by described comparative result.
Preferably, the decay interceptor being connected to described Shaping Module output is also comprised;
Described decay interceptor, oppositely reveals for stoping the comparative result flowing to described controller.
Preferably, also comprise the pulsewidth be connected between described decay interceptor and described controller and expand module;
Described pulsewidth expands module, after described comparative result is carried out pulse expansion, send to described controller.
Preferably, described pulsewidth expands the first resistance and the first electric capacity that module comprises parallel connection;
The output that described pulsewidth expands module connects one end of the first resistance and one end of the first electric capacity, the other end of described first resistance and the equal ground connection of the other end of the first electric capacity;
The output that described pulsewidth expands module connects described controller.
Preferably, described Shaping Module is diode or rectifier bridge.
Preferably, described reference signal is carried out logical calculated acquisition by hardware or is provided by described controller.
Preferably, described sampling protection module is protection clamp element.
Preferably, described output protection module comprises two resistance, is the second resistance and the 3rd resistance respectively,
Described second resistance is connected between the anode of described plasma electric field and described sampling module;
Described 3rd resistance is connected between the negative terminal of described plasma electric field and described sampling module.
Preferably, described sampling module is the resistance of default precision.
Preferably, described decay interceptor is diode.
Above technical scheme; the electric discharge monitoring and protecting circuit that the present embodiment provides, is directly articulated in load two ends by sampling module, the discharge signal at direct test load two ends; and carry out zero-decremently comparing and amplifying to discharge signal, like this can the more small discharge signal in monitoring load two ends.Unlike prior art, violent electric discharge or short circuit dischange can only be monitored.Further, circuit provided by the invention has carried out duplicate protection for sampling module, avoids discharge signal for the impact of sampling module.Therefore, circuit provided by the invention can the faint discharge signal of Real-Time Monitoring, avoids the lasting generation of discharging and exception occurs.
Accompanying drawing explanation
Fig. 1 is electric discharge monitoring and protecting circuit embodiments one schematic diagram in high-voltage ion purifier provided by the invention;
Fig. 2 is electric discharge monitoring and protecting circuit embodiments two schematic diagram in high-voltage ion purifier provided by the invention;
Fig. 3 is that pulsewidth provided by the invention expands module diagram.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
See Fig. 1, this figure is electric discharge monitoring and protecting circuit embodiments one schematic diagram in high-voltage ion purifier provided by the invention.
Electric discharge monitoring and protecting circuit in the high-voltage ion purifier that the present embodiment provides, comprising: sampling module 300, sampling protection module 300a, output protection module 302, Shaping Module 305, compare amplification module 307 and controller 100;
Described sampling module 300 is articulated in the positive and negative two ends of high-voltage ion purifier load plasma electric field 200, for the discharge signal of plasma electric field 200 of sampling;
The direct carry of described sampling module 300 is at the two ends of plasma electric field 200, compared with general sample mode, improve sensitivity and the real-time of sampling, the generation that plasma electric field 200 discharges can be monitored so more in time, and make quick response in the moment of electric discharge, avoid producing crack discharging sound and situation of causing danger.
Described sampling protection module 300a is connected on the two ends of described sampling module 300;
It should be noted that, described sampling protection module 300a can be realized by a quick voltage-stabiliser tube, and this voltage-stabiliser tube fast response time, instantaneous power is large.
When electric discharge unusual condition occurs plasma electric field 200, high voltage electric field has very large fluctuation, utilizes sampling protection module 300a that the surge current of high pressure fluctuations can be prevented the direct impact of sampling module 300.
Described output protection module 302 is in parallel with described sampling module 300, for carrying out pressure limiting to described sampling module 300; Sampling module 300 is avoided to be subject to the coup injury of high voltage electric field.
Described Shaping Module 305, flows to the described first input end comparing amplification module 307 after the discharge signal for being sampled by described sampling module 300 carries out rectification;
Because discharge signal is alternating signal, therefore alternating signal is carried out shaping upset by described Shaping Module 305, and alternating signal is shaped as direct current signal, to prevent the soft water station to front and back device; Because alternating signal is just sometimes, be negative sometimes, comparatively large to the impulse ratio of electric component like this, the time has grown the life-span of easy lesion element.Also effectively utilize the output efficiency of the discharge signal of sampling simultaneously; Because if do not carry out shaping, negative pulse signal just can not be identified, and can only identify positive signal.Extract the flash-over characteristic of plasma electric field 200 to greatest extent.
Described the second input comparing amplification module 307 connects reference signal, and described electric discharge is carried out comparing with reference signal by the described amplification module 307 that compares, and exports to controller 100 after being amplified by comparative result;
Comparison amplification module 307 in the present embodiment has the function comparing and amplify concurrently, the two is combined, and decreases the decay of signal.Traditional approach often by amplify and compare be positioned over two or more integrated circuit in, so very large decay is produced to signal.Adopt the independent sub-function module of an integrated circuit in the present embodiment, decrease the decay of signal, thus more small discharge signal can be detected.
Described controller 100, for being controlled the size of described plasma electric field 200 by described comparative result.
The electric discharge monitoring and protecting circuit that the present embodiment provides; sampling module is directly articulated in load two ends; the discharge signal at direct test load two ends, and carry out zero-decremently comparing and amplifying to discharge signal, like this can the more small discharge signal in monitoring load two ends.Unlike prior art, violent electric discharge or short circuit dischange can only be monitored.Further, circuit provided by the invention has carried out duplicate protection for sampling module, avoids discharge signal for the impact of sampling module.Therefore, circuit provided by the invention can the faint discharge signal of Real-Time Monitoring, avoids the lasting generation of discharging and exception occurs.
See Fig. 2, this figure is electric discharge monitoring and protecting circuit embodiments two schematic diagram in high-voltage ion purifier provided by the invention.
Electric discharge monitoring and protecting circuit in the high-voltage ion purifier that the present embodiment provides, also comprises the decay interceptor 308 being connected to described Shaping Module output;
Described decay interceptor 308, oppositely reveals for stoping the comparative result flowing to described controller.
Preferably, described decay interceptor 308 can adopt diode.
Decay interceptor 308 can stop the reverse leakage of the signal 310 exporting to controller 100, can reduce the interference attenuation effect of other peripheral devices to signal 310 simultaneously.Meanwhile, decay interceptor 308 pairs of pulse width signals keep, and read discharge signal leave time enough space to controller.
The circuit that the present embodiment provides, can also comprise the pulsewidth be connected between described decay interceptor 308 and described controller 100 and expand module 309;
Described pulsewidth expands module 309, after described comparative result is carried out pulse expansion, send to described controller 100.
First introduce pulsewidth to expand, because electrion is instantaneous, therefore the signal that sample circuit obtains is the pulse signal of a time width in microsecond (us) rank, the pulse width signal of microsecond (us) rank is not easy to information gathering and the reading of controller, therefore take pulsewidth width to carry out temporal amplification, the hardware handles process becoming millisecond (ms) rank from microsecond (us) rank is called pulsewidth expansion.
Pulsewidth is expanded module 309 and the fine discharge signal monitored is carried out pulse-width modulation, controller can be made to detect and recognize faint discharge signal.If because tiny signal does not carry out pulse-width modulation, controller will be difficult to identify, this is also the another one reason that discharge detection circuit of the prior art can not detect weak discharge signal.
It is the circuit being equal to resistance-capacitance device that described pulsewidth expands module 309, utilizes the lag characteristic of discharge and recharge time, reaches modulation impulse-width effect, the signal 310 after output pulse width expansion.
In the present embodiment, described output protection module comprises two resistance, is the second resistance 301 and the 3rd resistance 303 respectively,
Between the anode that described second resistance 301 is connected to described plasma electric field 200 and described sampling module 300;
Between the negative terminal that described 3rd resistance 303 is connected to described plasma electric field 200 and described sampling module 300.
It should be noted that, described output protection module also can comprise the resistance of multiple series connection, also can be a resistance.A kind of pulsewidth that introducing the embodiment of the present invention below provides expands the specific implementation of module.
See Fig. 3, this figure is that pulsewidth provided by the invention expands module diagram.
The described pulsewidth that the present embodiment provides is expanded module and is comprised the first resistance R1 in parallel and the first electric capacity C1;
The output that described pulsewidth expands module 309 connects one end of the first resistance R1 and one end of the first electric capacity C1, the other end of described first resistance R1 and the equal ground connection of the other end of the first electric capacity C1;
It should be noted that, the output that pulsewidth expands module 309 had not only connected the decay output of interceptor 308 but also the input of connection control device 100.
The output that described pulsewidth expands module connects described controller.
Shaping Module described in the embodiment of the present invention can prioritizing selection be diode or rectifier bridge.
It should be noted that, described reference signal is carried out logical calculated acquisition by hardware or is provided by described controller.
It should be noted that, described sampling protection module is protection clamp element.
It should be noted that, described sampling module is the resistance of default precision.This sampling module general can adopt precision to be greater than the noninductive resistance of 5%.
It should be noted that, the comparison amplification module 307 that the embodiment of the present invention provides is quick comparator device of high accuracy, such as input pulse peak value is 0.8 volt, reference signal is 0.7 volt, so comparing amplification module 307 output will be a high level, carry out pull-up current potential such as 5V, just directly can reach 5V by output HIGH voltage peak value of pulse at output, then expand through 309 pulsewidths, the 5V signal of a ms rank time span can be obtained.
The above is only preferred embodiment of the present invention, not does any pro forma restriction to the present invention.Although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention.Any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solution of the present invention protection.

Claims (10)

1. the electric discharge monitoring and protecting circuit in high-voltage ion purifier, is characterized in that, comprising: sampling module, sampling protection module, output protection module, Shaping Module, compare amplification module and controller;
Described sampling module is articulated in the positive and negative two ends of high-voltage ion purifier load plasma electric field, for the discharge signal of plasma electric field of sampling;
Described sampling protection module is connected on the two ends of described sampling module;
Described output protection module is in parallel with described sampling module, for carrying out pressure limiting to described sampling module;
Described Shaping Module, flows to the described first input end comparing amplification module after the discharge signal for being sampled by described sampling module carries out rectification;
Described the second input comparing amplification module connects reference signal, and described discharge signal and reference signal compare by the described amplification module that compares, and export to controller after being amplified by comparative result;
Described controller, for being controlled the size of described plasma electric field by described comparative result.
2. the electric discharge monitoring and protecting circuit in high-voltage ion purifier according to claim 1, is characterized in that, also comprises and is connected to the described decay interceptor comparing amplification module output;
Described decay interceptor, oppositely reveals for stoping the comparative result flowing to described controller.
3. the electric discharge monitoring and protecting circuit in high-voltage ion purifier according to claim 2, is characterized in that, also comprises the pulsewidth be connected between described decay interceptor and described controller and expands module;
Described pulsewidth expands module, after described comparative result is carried out pulse expansion, send to described controller.
4. the electric discharge monitoring and protecting circuit in high-voltage ion purifier according to claim 3, is characterized in that, described pulsewidth is expanded module and comprised the first resistance in parallel and the first electric capacity;
The output that described pulsewidth expands module connects one end of the first resistance and one end of the first electric capacity, the other end of described first resistance and the equal ground connection of the other end of the first electric capacity;
The output that described pulsewidth expands module connects described controller.
5. the electric discharge monitoring and protecting circuit in high-voltage ion purifier according to claim 1, is characterized in that, described Shaping Module is diode or rectifier bridge.
6. the electric discharge monitoring and protecting circuit in high-voltage ion purifier according to claim 1, is characterized in that, described reference signal is carried out logical calculated acquisition by hardware or provided by described controller.
7. the electric discharge monitoring and protecting circuit in high-voltage ion purifier according to claim 1, is characterized in that, described sampling protection module is protection clamp element.
8. the electric discharge monitoring and protecting circuit in high-voltage ion purifier according to claim 1, is characterized in that, described sampling protection module comprises two resistance, is the second resistance and the 3rd resistance respectively,
Described second resistance is connected between the anode of described plasma electric field and described sampling module;
Described 3rd resistance is connected between the negative terminal of described plasma electric field and described sampling module.
9. the electric discharge monitoring and protecting circuit in high-voltage ion purifier according to claim 8, is characterized in that, described sampling module is the resistance of default precision.
10. the electric discharge monitoring and protecting circuit in high-voltage ion purifier according to claim 2, is characterized in that, described decay interceptor is diode.
CN201310281809.1A 2013-07-05 2013-07-05 Electric discharge monitoring and protecting circuit in a kind of high-voltage ion purifier CN103346548B (en)

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CN201310281809.1A CN103346548B (en) 2013-07-05 2013-07-05 Electric discharge monitoring and protecting circuit in a kind of high-voltage ion purifier

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CN201310281809.1A CN103346548B (en) 2013-07-05 2013-07-05 Electric discharge monitoring and protecting circuit in a kind of high-voltage ion purifier
US14/895,243 US9735568B2 (en) 2013-06-04 2014-06-03 Ionic wind purifier and discharge monitoring and protective circuit of high-voltage ion purifier
PCT/CN2014/079113 WO2014194813A1 (en) 2013-06-04 2014-06-03 Ion air purifier and discharge monitoring and protective circuit of high-voltage ion purifier

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CN103346548B true CN103346548B (en) 2015-11-25

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014194813A1 (en) * 2013-06-04 2014-12-11 苏州贝昂科技有限公司 Ion air purifier and discharge monitoring and protective circuit of high-voltage ion purifier

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CN102013660A (en) * 2010-09-30 2011-04-13 上海良信电器股份有限公司 Quadrupole overvoltage-undervoltage protection circuit and method
CN102243279A (en) * 2010-04-30 2011-11-16 Ls产电株式会社 Apparatus for monitoring fault current in power system
CN103166194A (en) * 2011-12-17 2013-06-19 西安恒飞电子科技有限公司 Input overvoltage and under-voltage protection circuit of communication power supply module

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5192894A (en) * 1991-08-20 1993-03-09 Leybold Aktiengesellschaft Device for the suppression of arcs
CN1573243A (en) * 2003-06-12 2005-02-02 高超明智公司 Electro-kinetic air transporter and conditioner devices with enhanced arching detection and suppression features
CN101217320A (en) * 2008-01-21 2008-07-09 清华大学 A percutaneous biphasic radio communication device based on PPM type of modulation
CN102243279A (en) * 2010-04-30 2011-11-16 Ls产电株式会社 Apparatus for monitoring fault current in power system
CN101954313A (en) * 2010-09-08 2011-01-26 上海理工大学 High-frequency high-voltage switching power supply for electric precipitation
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CN103166194A (en) * 2011-12-17 2013-06-19 西安恒飞电子科技有限公司 Input overvoltage and under-voltage protection circuit of communication power supply module

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Denomination of invention: Discharging monitoring and protecting circuit on high-voltage ion purifier

Effective date of registration: 20180117

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