CN103472292A - Electrical equipment load terminal voltage monitoring and collecting technology - Google Patents
Electrical equipment load terminal voltage monitoring and collecting technology Download PDFInfo
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- CN103472292A CN103472292A CN201310402191XA CN201310402191A CN103472292A CN 103472292 A CN103472292 A CN 103472292A CN 201310402191X A CN201310402191X A CN 201310402191XA CN 201310402191 A CN201310402191 A CN 201310402191A CN 103472292 A CN103472292 A CN 103472292A
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Abstract
The invention relates to an electrical equipment load terminal voltage monitoring and collecting technology. The electrical equipment load terminal voltage monitoring and collecting technology is characterized in that two current transformation resistors are connected with the input terminal of a VSM025A voltage sensor, namely the load terminal voltage side led into an electrical equipment load; the output terminals of the VSM025A voltage sensor are connected with voltage transformation resistors, wherein the voltage transformation resistors are provided with ground terminals; the voltage transformation resistors are connected with the input terminals of an amplifier circuit; the output terminals of the amplifier circuit are subjected to precise rectification sequentially. According to the electrical equipment load terminal voltage monitoring and collecting technology, an electronic circuit development technology is used for processing a feedback signal through a circuit comprising the current transformation resistors, a VSM 25A voltage sensor, the voltage transformation resistors, the amplifier circuit, a precise rectification circuit and a voltage distribution amplitude limiting circuit, the feedback signal is converted into a digital signal from an analog signal and becomes the digital signal which can be recognized and analyzed by a single-chip microcomputer, and therefore the technical problem that the load terminal voltage of equipment which is electrically driven can not be restored constantly and accurately is solved.
Description
Technical field
The present invention relates to a kind of power equipment load terminal voltage monitoring acquisition technique, belong to the power equipment monitoring technical field.
Background technology
In the industrial and agricultural production process, electric power is power producer, and a lot of equipment is by obtaining power by electric power energy to the source of mechanical energy conversion, and the stability of the conversion of this energy is determining to arrive produce stable.Because the line voltage high frequency is harassed, the factors such as peak surge of surge and wave form distortion, formation Microsecond grade, can feed back the electric wire conduction and give off the undesired signal of high frequency by networking while causing some jumbo contactor work.On networking, the peak value of this interference can reach KV level, frequency up to tens to the hundreds of kilohertz.Simultaneously, surge and wave form distortion high-power thyristor often produce wave form distortion when non-zero triggers, and in addition, also may on networking, produce the peak surge of duration at Microsecond grade.When above-mentioned interference occurs, often make the potential jump of networking feeder line and the earth or cabinet.This interference enters system by power supply, causes control system or the computer working confusion of consumer.Cause heavy economic losses.
Summary of the invention
The purpose of this invention is to provide a kind of power equipment load terminal voltage monitoring acquisition technique, it uses the electronic circuit development technique that the feedback signal process is comprised to the circuit of unsteady flow resistance, VSM25 voltage sensor, transformation resistance, amplifier circuit, precise rectification circuit, dividing potential drop amplitude limiter circuit is processed, and carry out the conversion of simulating signal to digital signal, becoming to be single-chip microcomputer identification and the digital signal of analyzing, and has solved and has adopted power-actuated apparatus of load terminal voltage can not form constantly the accurately technical barrier of reduction.
Technical scheme of the present invention is achieved in that power equipment load terminal voltage monitoring acquisition technique, by electronic circuit, feedback signal is processed, electronic circuit is by unsteady flow resistance, VSM025A type voltage sensor, transformation resistance, amplifier circuit, precise rectification circuit, the dividing potential drop amplitude limiter circuit forms, it is characterized in that: two unsteady flow resistance are connected with the load terminal voltage end of introducing in the namely power equipment load of VSM025A type voltage sensor input end, VSM025A type voltage sensor output terminal is connected with transformation resistance, transformation resistance has earth terminal, transformation resistance is connected with the amplifier circuit incoming end again, the amplifier circuit output terminal passes through precise rectification circuit more successively, the dividing potential drop amplitude limiter circuit is connected to the A/D conversion port, the dividing potential drop amplitude limiter circuit is that two resistance in seriess form.
Its concrete signal acquisition step is as follows:
The collection of power equipment load terminal voltage is with larger undesired signal, so will be first after unsteady flow resistance unsteady flow, isolate its impact by VSM025A type voltage sensor, direct current, ac voltage signal can be monitored, be monitored to VSM025A type voltage sensor under electrically isolated condition, the voltage Vp that enters into the former limit of VSM025A type voltage sensor is converted to primary current Ip by former limit resistance R 1, the magnetic flux that the magnetic flux that Ip produces and the Hall voltage secondary current Is through amplifying generation produces by secondary coil balances each other, signal response time approximately only needs 1 μ s, use VSM025A type voltage sensor, at first the load terminal voltage termination of introducing in the namely power equipment load of its input end enters two resistance, to become current signal by measuring the 1.5-4V voltage signal obtained, output terminal ground connection after a resistance, current signal is converted into the 0-4V analog quantity voltage signal of standard, draw signal and amplify from the resistance other end, pass through again precise rectification circuit, the dividing potential drop of two resistance in seriess and limited amplitude, finally entering the A/D end of convert is digital signal by analog-signal transitions, carry out data acquisition and analysis for the measurement of correlation instrument.
Good effect of the present invention is its accurately sensing lead terminal voltage, can be used as that the line voltage high frequency is harassed, the information acquisition of the factors such as peak surge of surge and wave form distortion, formation Microsecond grade, solved because the load end electric current by the time high-intensity magnetic field, induced potential is attached on voltage, affect voltage real measure cause can't precision measurement power equipment load terminal voltage problem, the high-precision rapid survey that is widely used in the electric power feedback voltage, produced good economic and social benefit.
The accompanying drawing explanation
Fig. 1 is that electric circuit construction of the present invention concerns block diagram.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention will be further described: as shown in Figure 1, power equipment load terminal voltage monitoring acquisition technique, by electronic circuit, feedback signal is processed, electronic circuit is by unsteady flow resistance, the VSM025A voltage sensor, transformation resistance, amplifier circuit, precise rectification circuit, the dividing potential drop amplitude limiter circuit forms, it is characterized in that: two unsteady flow resistance are connected with the load terminal voltage end of introducing in the namely power equipment load of VSM025A voltage sensor input end, VSM025A voltage sensor output terminal is connected with transformation resistance, transformation resistance has earth terminal, transformation resistance is connected with the amplifier circuit incoming end again, the amplifier circuit output terminal passes through precise rectification circuit more successively, the dividing potential drop amplitude limiter circuit is connected to the A/D conversion port, the dividing potential drop amplitude limiter circuit is that two resistance in seriess form.
Its concrete signal acquisition step is such:
The collection of power equipment load terminal voltage is with larger undesired signal, so will be first after unsteady flow resistance unsteady flow, isolate its impact by VSM025A type voltage sensor, direct current, ac voltage signal can be monitored, be monitored to VSM025A type voltage sensor under electrically isolated condition, the voltage Vp that enters into the former limit of VSM025A type voltage sensor is converted to primary current Ip by former limit resistance R 1, the magnetic flux that the magnetic flux that Ip produces and the Hall voltage secondary current Is through amplifying generation produces by secondary coil balances each other, signal response time approximately only needs 1 μ s, use VSM025A type voltage sensor, at first the load terminal voltage termination of introducing in the namely power equipment load of its input end enters two resistance, to become current signal by measuring the 1.5-4V voltage signal obtained, output terminal ground connection after a resistance, current signal is converted into the 0-4V analog quantity voltage signal of standard, draw signal and amplify from the resistance other end, pass through again precise rectification circuit, the dividing potential drop of two resistance in seriess and limited amplitude, finally entering the A/D end of convert is digital signal by analog-signal transitions, carry out data acquisition and analysis for the measurement of correlation instrument.
The collection of power equipment load terminal voltage is with larger undesired signal, so will first through VSM025A type voltage sensor, isolate its impact.Direct current, ac voltage signal can be monitored, be monitored to VSM025A type voltage sensor under electrically isolated condition.The voltage Vp that enters into the former limit of voltage sensor is converted to primary current Ip by former limit resistance R 1, and the magnetic flux that the magnetic flux that Ip produces and the Hall voltage secondary current Is through amplifying generation produces by secondary coil balances each other, and realizes signal measurement.Use VSM025A type voltage sensor, at first the load terminal voltage termination of introducing in the namely power equipment load of its input end enters two resistance, voltage signal be become to current signal, output terminal ground connection after a resistance, current signal becomes voltage signal.Draw signal and amplify from the resistance other end, then passing through precise rectification circuit, the dividing potential drop of two resistance in seriess and limited amplitude, finally entering the A/D end of convert is digital signal by analog-signal transitions, for the measurement of correlation instrument, carries out data acquisition and analysis.
The application case of this patent in resistance spot welding welding process feedback voltage signal gatherer process: the collection of spot welding secondary voltage: secondary voltage is less, generally is no more than 10 volts, and with larger undesired signal.Present technique is by adopting VSM025A type voltage sensor.VSM025A type voltage sensor is the voltage sensor of new generation of application Hall effect and the development of magnetic balance principle, can under electrically isolated condition, monitor, monitor direct current, ac voltage signal.The original edge voltage Vp that enters into the Hall voltage sensor is converted to primary current Ip by former limit resistance R 1, and the magnetic flux that the magnetic flux that Ip produces and the Hall voltage secondary current Is through amplifying generation produces by secondary coil balances each other.Use VSM025A type voltage sensor.At first the secondary voltage termination of namely introducing from electrode cap at its input end enters two resistance, voltage signal be become to current signal, and output terminal ground connection after a resistance, current signal becomes voltage signal.Draw signal and amplify from the resistance other end, then passing through precise rectification circuit, the dividing potential drop of two resistance in seriess, the ADC that finally enters CPU holds.
Embodiment 2
The application case of this patent in the motor start-up operational process feedback mains voltage signal gatherer process of Electric Traction mechanism: the principle of work of the power source motor of Electric Traction mechanism is that electric power is converted into to mechanical force, and know that according to electromagnetic principle at first the phasing degree that the variation of load often causes motor current and voltage changes, the synchronism that now gathers the instantaneous value of voltage, electric current is the key that obtains accurate computing, so present technique is by adopting VSM025A type voltage sensor.VSM025A type voltage sensor is the voltage sensor of new generation of application Hall effect and the development of magnetic balance principle, can under electrically isolated condition, monitor, monitor direct current, ac voltage signal.The original edge voltage Vp that enters into the Hall voltage sensor is converted to primary current Ip by former limit resistance R 1, and the magnetic flux that the magnetic flux that Ip produces and the Hall voltage secondary current Is through amplifying generation produces by secondary coil balances each other.Use VSM025A type voltage sensor.At first the secondary voltage termination of namely introducing from electrode cap at its input end enters two resistance, voltage signal be become to current signal, and output terminal ground connection after a resistance, current signal becomes voltage signal.Draw signal and amplify from the resistance other end, then passing through precise rectification circuit, the dividing potential drop of two resistance in seriess, the ADC that finally enters CPU holds.
Claims (1)
1. the power equipment load terminal voltage is monitored acquisition technique, by electronic circuit, feedback signal is processed, electronic circuit is by unsteady flow resistance, VSM025A type voltage sensor, transformation resistance, amplifier circuit, precise rectification circuit, the dividing potential drop amplitude limiter circuit forms, it is characterized in that: two unsteady flow resistance are connected with the load terminal voltage end of introducing in the namely power equipment load of VSM025A type voltage sensor input end, VSM025A type voltage sensor output terminal is connected with transformation resistance, transformation resistance has earth terminal, transformation resistance is connected with the amplifier circuit incoming end again, the amplifier circuit output terminal passes through precise rectification circuit more successively, the dividing potential drop amplitude limiter circuit is connected to the A/D conversion port, the dividing potential drop amplitude limiter circuit is that two resistance in seriess form,
Its concrete signal acquisition step is as follows:
The collection of power equipment load terminal voltage is with larger undesired signal, so will be first after unsteady flow resistance unsteady flow, isolate its impact by VSM025A type voltage sensor, direct current, ac voltage signal can be monitored, be monitored to VSM025A type voltage sensor under electrically isolated condition, the voltage Vp that enters into the former limit of VSM025A type voltage sensor is converted to primary current Ip by former limit resistance R 1, the magnetic flux that the magnetic flux that Ip produces and the Hall voltage secondary current Is through amplifying generation produces by secondary coil balances each other, signal response time approximately only needs 1 μ s, use VSM025A type voltage sensor, at first the load terminal voltage termination of introducing in the namely power equipment load of its input end enters two resistance, to become current signal by measuring the 1.5-4V voltage signal obtained, output terminal ground connection after a resistance, current signal is converted into the 0-4V analog quantity voltage signal of standard, draw signal and amplify from the resistance other end, pass through again precise rectification circuit, the dividing potential drop of two resistance in seriess and limited amplitude, finally entering the A/D end of convert is digital signal by analog-signal transitions, carry out data acquisition and analysis for the measurement of correlation instrument.
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| CN201310402191XA CN103472292A (en) | 2013-09-06 | 2013-09-06 | Electrical equipment load terminal voltage monitoring and collecting technology |
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| CN201310402191XA CN103472292A (en) | 2013-09-06 | 2013-09-06 | Electrical equipment load terminal voltage monitoring and collecting technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110007162A (en) * | 2017-11-29 | 2019-07-12 | 台湾积体电路制造股份有限公司 | For monitoring the circuit of the transient time in simulation system and digital display circuit |
| CN111044825A (en) * | 2019-12-28 | 2020-04-21 | 广东盈科电子有限公司 | Tester for testing 220V load and direct-current voltage |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426285A (en) * | 2011-09-14 | 2012-04-25 | 深圳航天科技创新研究院 | Current sensor used for bidirectional current sampling |
| CN202975143U (en) * | 2012-12-21 | 2013-06-05 | 常熟开关制造有限公司(原常熟开关厂） | Detection circuit of automatic change-over switch electric appliance |
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2013
- 2013-09-06 CN CN201310402191XA patent/CN103472292A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426285A (en) * | 2011-09-14 | 2012-04-25 | 深圳航天科技创新研究院 | Current sensor used for bidirectional current sampling |
| CN202975143U (en) * | 2012-12-21 | 2013-06-05 | 常熟开关制造有限公司(原常熟开关厂） | Detection circuit of automatic change-over switch electric appliance |
Non-Patent Citations (1)
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| 常迎春: "基于LabVIEW的数字化电阻点焊过程信息监测系统", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110007162A (en) * | 2017-11-29 | 2019-07-12 | 台湾积体电路制造股份有限公司 | For monitoring the circuit of the transient time in simulation system and digital display circuit |
| CN110007162B (en) * | 2017-11-29 | 2023-01-13 | 台湾积体电路制造股份有限公司 | Circuits, methods, and systems for monitoring transient time |
| CN111044825A (en) * | 2019-12-28 | 2020-04-21 | 广东盈科电子有限公司 | Tester for testing 220V load and direct-current voltage |
| CN111044825B (en) * | 2019-12-28 | 2022-05-17 | 广东盈科电子有限公司 | Tester for testing 220V load and direct-current voltage |
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Application publication date: 20131225 |