CN104215818A - Acquisition circuit for output current of high-frequency dust collection power source - Google Patents
Acquisition circuit for output current of high-frequency dust collection power source Download PDFInfo
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- CN104215818A CN104215818A CN201410461724.6A CN201410461724A CN104215818A CN 104215818 A CN104215818 A CN 104215818A CN 201410461724 A CN201410461724 A CN 201410461724A CN 104215818 A CN104215818 A CN 104215818A
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Abstract
The invention discloses an acquisition circuit for the output current of a high-frequency dust collection power source. The acquisition circuit comprises a voltage dividing circuit, a current sampling circuit, a suppression filter circuit, a proportional amplifying circuit and a clamping filter circuit, all of which are connected together orderly; the voltage dividing circuit is used for dividing the output high voltage of the power source; the output current is acquired and converted into a voltage signal by the current sampling circuit, and the voltage signal is input into the proportional amplifying circuit after being processed by the suppression filter circuit, and then the signal is input into the digital signal processing unit by use of the clamping filter circuit after voltage tracking. The acquisition circuit for the output current of the high-frequency dust collection power source is simplified because few elements are adopted, and real-time detection of the acquisition circuit on the output current of the power source is guaranteed. Multiple filter circuits are adopted to guarantee the reliability of the signal; the output signal can be directly input into the digital signal processing unit.
Description
Technical field
The invention belongs to high frequency electric source field, relate in particular to a kind of Acquisition Circuit of the high-frequency dust removing electric power outputting current being formed by high-power precision resistance and proportional amplifier AD8034.
Background technology
Along with the development of modern industry, the progress of Power Electronic Technique, traditional power frequency dedusting power source cannot reach present dedusting requirement.High-frequency dust removing power supply is high with its output efficiency, and output ripple is little, the advantage of raising efficiency of dust collection that can be by a relatively large margin is replacing the market position of power frequency dedusting power source.But high frequency power supply mode also increases with respect to the system complexity of power frequency power supply mode thereupon.Along with the frequency of power supply increases, electromagnetic interference signal when system operation also increases accordingly, thereby makes the degree of difficulty of the signals collecting to system also in continuous increase.
Summary of the invention
The object of the present invention is to provide a kind of Acquisition Circuit of high-frequency dust removing electric power outputting current, the components and parts that this circuit uses are few, simplified circuit, ensured the real-time detection to electric power outputting current.
Object of the present invention is achieved through the following technical solutions:
A kind of Acquisition Circuit of high-frequency dust removing electric power outputting current, it is characterized in that: this circuit comprises that the bleeder circuit, current sampling circuit, the filtering that connect successively suppress circuit, ratio amplifying circuit and clamper filtering circuit, bleeder circuit carries out dividing potential drop to power supply output high pressure, output current is voltage signal via current sampling circuit Collect conversion, suppress to be input to ratio amplifying circuit after processing of circuit by crossing filtering, after voltage follow, be input to digital signal processing unit by clamper filtering circuit.
Bleeder circuit comprises the first resistance, and this resistance is the high-power divider resistance of 150 megaohms, is connected between the output terminal and current sampling resistor of transformer.
Current sampling circuit comprises the second resistance R 2, the 3rd resistance R 3, and the second resistance R 2 and the 3rd resistance R 3 parallel connections are connected across between the first resistance R 1 and ground.The second resistance, the 3rd resistance used are powerful precision resistance.
Described filtering suppresses circuit and comprises the first voltage stabilizing diode, the first electric capacity, and the first electric capacity is in parallel with the first voltage stabilizing diode to be connected across between the first resistance R 1 and ground.
Ratio amplifying circuit comprises the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the second stabilivolt and proportion operational amplifier, and the second stabilivolt and the second Capacitance parallel connection are connected between six pin and ground of proportional amplifier; The 4th resistance is connected between six pin of current output terminal and proportional amplifier, the 5th resistance, the 6th resistance parallel connection be connected across and five pin of proportional amplifier between, after the 3rd electric capacity and the 7th resistance parallel connection, be connected across between six pin and seven pin of proportional amplifier, the 4th electric capacity be connected to and proportional amplifier octal between, the 5th electric capacity be connected to and proportional amplifier four pin between, the power supply of connect+12V of the octal of proportional amplifier, the power supply of connect-12V of four pin.
Clamper filtering circuit comprises the 8th resistance, the 3rd stabilivolt, the 6th electric capacity, wherein the 8th resistance is connected between voltage follower circuit output terminal and the anode of the 3rd stabilivolt, the 3rd stabilivolt and the 6th Capacitance parallel connection be connected to and the 8th resistance between, in circuit, diode adopts small-signal germanium type diode, its conduction voltage drop is 0.2-0.3v, and this clamping circuit ensures that input voltage is in digital signal processing unit reliable operation condition.
In the present invention, bleeder circuit is shared power supply output high pressure, after bleeder circuit, warp converts current signal to voltage signal by current sampling circuit, the voltage signal generating entered filtering to be suppressed after processing of circuit, signal to be amplified in ratio amplifying circuit, amplifying signal is carrying out carrying out filtering and voltage clamping by clamper filtering circuit after voltage follow, finally output.
The present invention has following beneficial effect: the first, circuit structure is simply easy to realize.The second, take into full account the electromagnetic interference problem under high frequency environment, signal is carried out to repeatedly filtering and guarantee that signal is accurate.Three, can realize accurately measuring of output current under large voltage conditions.
Brief description of the drawings
Fig. 1 is schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing 1, the present invention is described in detail:
As shown in the figure, a kind of Acquisition Circuit of high-frequency dust removing electric power outputting current, this circuit comprises that the bleeder circuit 1, current sampling circuit 2, the filtering that connect successively suppress circuit 3, ratio amplifying circuit 4 and clamper filtering circuit 5, bleeder circuit is connected with power supply output, power supply output high pressure is carried out to dividing potential drop, output current is voltage signal via current sampling circuit Collect conversion, suppress to be input to ratio amplifying circuit after processing of circuit by crossing filtering, after voltage follow, be input to digital signal processing unit by clamper filtering circuit.
Bleeder circuit comprises the first resistance R 1, and this resistance is the high-power divider resistance of 150 megaohms, is connected between the output terminal and current sampling resistor of transformer, and electric power output voltage is carried out to dividing potential drop.
In current sampling circuit, the second resistance R 2 and the 3rd resistance R 3 parallel connections are connected across between dividing potential drop the first resistance R 1 and ground, what adopt is that two resistances are the accurate high-power resistance parallel connection of 0.5 ohm, converts current signal to measurable voltage signal by sample circuit.
Filtering inhibition circuit comprises the first voltage stabilizing diode D1, the first capacitor C 1, the first electric capacity is in parallel with the first voltage stabilizing diode is connected across between the first resistance R 1 and ground.In order to ensure the accuracy of signal, the value of choosing filter capacitor is 10nf-20nf.In order to ensure that the safety of late-class circuit selects the stabilivolt of 5V herein, prevent superpotential.
Ratio amplifying circuit comprises the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, the 5th capacitor C 5, the second stabilivolt D2 and proportion operational amplifier B, and the second stabilivolt and the second Capacitance parallel connection are connected between six pin and ground of proportional amplifier; The 4th resistance is connected between six pin of current output terminal and proportional amplifier, the 5th resistance, the 6th resistance parallel connection be connected across and five pin of proportional amplifier between, after the 3rd electric capacity and the 7th resistance parallel connection, be connected across between six pin and seven pin of proportional amplifier, the 4th electric capacity be connected to and proportional amplifier octal between, the 5th electric capacity be connected to and proportional amplifier four pin between, the power supply of connect+12V of the octal of proportional amplifier, the power supply of connect-12V of four pin.The 4th resistance and the second electric capacity form low-pass filter signal are carried out to filtering, by the adjusting of the 4th resistance and the 7th resistance being realized to the adjustment of enlargement factor.
Clamper filtering circuit comprises the 8th resistance R 8, the 3rd stabilivolt D3, the 6th capacitor C 6, wherein the 8th resistance is connected between voltage follower circuit output terminal and the anode of the 3rd stabilivolt, the 3rd stabilivolt and the 6th Capacitance parallel connection be connected to and the 8th resistance between, in circuit, diode adopts small-signal germanium type diode, its conduction voltage drop is 0.2-0.3v, and this clamping circuit ensures that input voltage is in digital signal processing unit reliable operation condition.The 8th resistance and the 6th electric capacity form low-pass filter and carry out filtering to amplifying output signal, and the 3rd stabilivolt selects the stabilivolt of 10V to ensure that output voltage can not produce and destroy late-class circuit.
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Claims (6)
1. the Acquisition Circuit of a high-frequency dust removing electric power outputting current, it is characterized in that: this circuit comprises the bleeder circuit (1) connecting successively, current sampling circuit (2), filtering suppresses circuit (3), ratio amplifying circuit (4) and clamper filtering circuit (5), bleeder circuit (1) carries out dividing potential drop to power supply output high pressure, output current is voltage signal via current sampling circuit (2) Collect conversion, suppress after circuit (3) is processed to be input to ratio amplifying circuit (4) by crossing filtering, after voltage follow, be input to digital signal processing unit by clamper filtering circuit (5).
2. the Acquisition Circuit of high-frequency dust removing electric power outputting current according to claim 1, is characterized in that: described bleeder circuit (1) is made up of the first resistance R 1, and the first resistance R 1 is high-power divider resistance, and resistance is 50M Ω.
3. according to the Acquisition Circuit of the high-frequency dust removing electric power outputting current described in claims 1, it is characterized in that: described current sampling circuit (2) comprises the second resistance R 2, the 3rd resistance R 3, and the second resistance R 2 and the 3rd resistance R 3 parallel connections are connected across between the first resistance R 1 and ground.
4. according to the Acquisition Circuit of the high-frequency dust removing electric power outputting current described in claims 1, it is characterized in that: described filtering suppresses circuit (3) and comprises the first voltage stabilizing diode, the first electric capacity, and the first electric capacity is in parallel with the first voltage stabilizing diode to be connected across between the first resistance R 1 and ground.
5. according to the Acquisition Circuit of the high-frequency dust removing electric power outputting current described in claims 1, it is characterized in that: ratio amplifying circuit (4) comprises the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the second stabilivolt and proportion operational amplifier, the second stabilivolt and the second Capacitance parallel connection are connected between six pin and ground of proportional amplifier; The 4th resistance is connected between six pin of current output terminal and proportional amplifier, the 5th resistance, the 6th resistance parallel connection be connected across and five pin of proportional amplifier between, after the 3rd electric capacity and the 7th resistance parallel connection, be connected across between six pin and seven pin of proportional amplifier, the 4th electric capacity be connected to and proportional amplifier octal between, the 5th electric capacity be connected to and proportional amplifier four pin between, the power supply of connect+12V of the octal of proportional amplifier, the power supply of connect-12V of four pin.
6. according to the Acquisition Circuit of the high-frequency dust removing electric power outputting current described in claims 1, it is characterized in that: clamper filtering circuit (5) comprises the 8th resistance, the 3rd stabilivolt, the 6th electric capacity, wherein the 8th resistance is connected between voltage follower circuit output terminal and the anode of the 3rd stabilivolt, the 3rd stabilivolt and the 6th Capacitance parallel connection be connected to and the 8th resistance between, in circuit, diode adopts small-signal germanium type diode, its conduction voltage drop is 0.2-0.3v, and this clamping circuit ensures that input voltage is in digital signal processing unit reliable operation condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410461724.6A CN104215818A (en) | 2014-09-12 | 2014-09-12 | Acquisition circuit for output current of high-frequency dust collection power source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410461724.6A CN104215818A (en) | 2014-09-12 | 2014-09-12 | Acquisition circuit for output current of high-frequency dust collection power source |
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| CN104215818A true CN104215818A (en) | 2014-12-17 |
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| CN201410461724.6A Pending CN104215818A (en) | 2014-09-12 | 2014-09-12 | Acquisition circuit for output current of high-frequency dust collection power source |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548904A (en) * | 2016-01-11 | 2016-05-04 | 致导科技（北京）有限公司 | Unmanned aerial vehicle intelligent battery circuit, unmanned aerial vehicle circuit system and unmanned aerial vehicle |
| CN107703409A (en) * | 2017-10-23 | 2018-02-16 | 华中科技大学 | A kind of current measurement circuit for insulating core transformer typ high voltage power supply |
| CN111830318A (en) * | 2020-07-13 | 2020-10-27 | 哈尔滨工业大学 | Wireless charging high-frequency current sampling system and sampling method thereof |
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| US20130154674A1 (en) * | 2011-12-19 | 2013-06-20 | Anil Nagpal | Method of high voltage detection and accurate phase angle measurement in cordless phasing meters |
| CN103743940A (en) * | 2014-01-24 | 2014-04-23 | 镇江天力变压器有限公司 | Precise zero cross detection circuit for resonance current of high-frequency dedusting power supply |
| CN103743946A (en) * | 2014-01-24 | 2014-04-23 | 镇江天力变压器有限公司 | Integrating circuit for resonance current of high-frequency precipitation power supply |
| CN103760403A (en) * | 2014-01-24 | 2014-04-30 | 镇江天力变压器有限公司 | Bus voltage detection circuit of high-frequency precipitator power supply |
| CN203825078U (en) * | 2014-02-19 | 2014-09-10 | 江苏省扬州技师学院 | FPGA-based electric dust remover high frequency power source collector |
| CN204101618U (en) * | 2014-09-12 | 2015-01-14 | 江苏容天机电科技有限公司 | A kind of Acquisition Circuit of high-frequency dust removing electric power outputting current |
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2014
- 2014-09-12 CN CN201410461724.6A patent/CN104215818A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130154674A1 (en) * | 2011-12-19 | 2013-06-20 | Anil Nagpal | Method of high voltage detection and accurate phase angle measurement in cordless phasing meters |
| CN103743940A (en) * | 2014-01-24 | 2014-04-23 | 镇江天力变压器有限公司 | Precise zero cross detection circuit for resonance current of high-frequency dedusting power supply |
| CN103743946A (en) * | 2014-01-24 | 2014-04-23 | 镇江天力变压器有限公司 | Integrating circuit for resonance current of high-frequency precipitation power supply |
| CN103760403A (en) * | 2014-01-24 | 2014-04-30 | 镇江天力变压器有限公司 | Bus voltage detection circuit of high-frequency precipitator power supply |
| CN203825078U (en) * | 2014-02-19 | 2014-09-10 | 江苏省扬州技师学院 | FPGA-based electric dust remover high frequency power source collector |
| CN204101618U (en) * | 2014-09-12 | 2015-01-14 | 江苏容天机电科技有限公司 | A kind of Acquisition Circuit of high-frequency dust removing electric power outputting current |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548904A (en) * | 2016-01-11 | 2016-05-04 | 致导科技（北京）有限公司 | Unmanned aerial vehicle intelligent battery circuit, unmanned aerial vehicle circuit system and unmanned aerial vehicle |
| CN107703409A (en) * | 2017-10-23 | 2018-02-16 | 华中科技大学 | A kind of current measurement circuit for insulating core transformer typ high voltage power supply |
| CN107703409B (en) * | 2017-10-23 | 2024-02-09 | 华中科技大学 | Current measurement circuit for insulating core transformer type high-voltage power supply |
| CN111830318A (en) * | 2020-07-13 | 2020-10-27 | 哈尔滨工业大学 | Wireless charging high-frequency current sampling system and sampling method thereof |
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Application publication date: 20141217 |