CN106645903A - Detection method and system for multi-channel alternating current strong current signal - Google Patents
Detection method and system for multi-channel alternating current strong current signal Download PDFInfo
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- CN106645903A CN106645903A CN201710122630.XA CN201710122630A CN106645903A CN 106645903 A CN106645903 A CN 106645903A CN 201710122630 A CN201710122630 A CN 201710122630A CN 106645903 A CN106645903 A CN 106645903A
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- electric power
- forceful electric
- power signal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/22—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using conversion of ac into dc
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention provides a detection method for a multi-channel alternating current strong current signal. The method needs to provide a singlechip microcomputer and more than one alternating current strong current signal detection device. The alternating current strong current signal detection device comprises a voltage dividing circuit, a rectifying circuit and a filter circuit; the alternating current strong current signal passes through the voltage dividing circuit, so that the alternating current strong current signal is stepped down; the alternating current strong current signal which is stepped down is sent to the rectifying circuit to be converted into a direct current signal; the direct current signal is converted into a stable low voltage direct current signal through the filter circuit; the low voltage direct current signals of all the alternating current strong current signal detection devices are received by the singlechip microcomputer, and if the low voltage direct current signals are in low level, the alternating current strong current signals detected by the alternating current strong current signal detection devices are normal; otherwise, the corresponding tested alternating current strong current signals are abnormal. The invention further provides a multi-channel alternating current strong current signal detection system, the time consumed for test is shortened, and the testing efficiency is greatly improved.
Description
Technical field
The present invention relates to a kind of multichannel exchange forceful electric power signal detecting method and system.
Background technology
In the product of the multigroup high-voltage alternating output port of plant produced band, the high-voltage alternating output port to product is needed
Carry out electric performance test.The method of testing of High voltage output port is generally：It is artificial tested one by one using universal meter or
By external bulb even load by manually visually observing bulb brightness situation, and then judge whether port electrical performance is normal.
This kind of method testing efficiency when port is more is relatively low, be susceptible to test leakage and test result depends on artificial judgment, works as work
When person works' state is poor, the reliability of judgement also declines therewith.The mode for being measured using universal meter in addition is also present
Larger potential safety hazard, simultaneously touch zero live wire causes the hand-held test pencil of short circuit, operating personnel to imprudence when same test pencil is tested
When measuring tested high-voltage alternating terminal, if hand touches unintentionally high-voltage alternating lead-out terminal etc. and can all cause serious bad
Consequence.
Also it is talented at present to have exchange forceful electric power signal supervisory instrument, typically just there is transformer that alternating current is adjusted to into low pressure telecommunications
Number detected.Because volume of transformer is big, an exchange forceful electric power signal supervisory instrument can only detect exchange forceful electric power signal all the way.
When there is multichannel AC forceful electric power signal demand to detect in a Devices to test, just there is existing exchange forceful electric power signal supervisory instrument inspection
Survey inefficiency.
The content of the invention
The technical problem to be solved in the present invention, is to provide a kind of multichannel exchange forceful electric power signal detecting method and be
System, shortens the test cost time, substantially increases testing efficiency.
What one of present invention was realized in：A kind of multichannel exchanges forceful electric power signal detecting method, and methods described needs to provide
Single-chip microcomputer with all the way more than exchange forceful electric power signal supervisory instrument, the exchange forceful electric power signal supervisory instrument include bleeder circuit,
Rectification circuit and filter circuit；Specifically include following steps：
Step 1, exchange forceful electric power signal pass through bleeder circuit so that the signal step-down of exchange forceful electric power；
Step 2, the ac signal after step-down is sent to rectification circuit it is converted into direct current signal；
Step 3, direct current signal are converted into stable low-voltage dc signal by filter circuit；
Step 4, by single-chip microcomputer receive it is all exchange forceful electric power signal supervisory instruments in low-voltage dc signals, if low-pressure direct
Stream signal is low level, and the exchange forceful electric power signal of Ze Gai roads exchange forceful electric power signal supervisory instrument detection is normal；It is no, then correspond to quilt
The exchange forceful electric power signal of survey is abnormal.
Further, methods described also includes isolation circuit；The step 4 is further specially：The exchange forceful electric power letter
, by isolation circuit to the single-chip microcomputer, whether monolithic machine testing low-voltage dc signal for low-voltage dc signal in number detection means
Normally, if low-voltage dc signal is low level, the exchange forceful electric power signal of Ze Gai roads exchange forceful electric power signal supervisory instrument detection is for just
Often；It is no, then tested exchange forceful electric power signal is corresponded to for exception.
Further, the isolation circuit is optical coupling isolation circuit.
Further, the rectification circuit is whole bridge rectifier circuit.
Further, the bleeder circuit is safety electric capacity or metalfilmresistor.
What the two of the present invention were realized in：A kind of multichannel exchanges forceful electric power signal detection system, it include single-chip microcomputer and
Exchange forceful electric power signal supervisory instrument more than all the way, all of exchange forceful electric power signal supervisory instrument is installed in parallel in single-chip microcomputer
On, the exchange forceful electric power signal supervisory instrument includes bleeder circuit, rectification circuit and filter circuit；It is the bleeder circuit, whole
Current circuit, filter circuit are sequentially connected, and the filter circuit of each exchange forceful electric power signal supervisory instrument is connected respectively with single-chip microcomputer.
Further, the exchange forceful electric power signal supervisory instrument also includes isolation circuit；The isolation circuit is located at described
Between filter circuit and single-chip microcomputer.
Further, the isolation circuit is optical coupling isolation circuit.
Further, the rectification circuit is whole bridge rectifier circuit.
Further, the bleeder circuit is safety electric capacity or metalfilmresistor.
The invention has the advantages that：A kind of multichannel exchange forceful electric power signal detecting method of the present invention and system, due to
Multichannel AC forceful electric power signal can be simultaneously detected, the test cost time is shortened, testing efficiency is substantially increased, test leakage is reduced, is missed
Survey the occurrence of, while the security of operated by personnel is also greatly improved；Production cost is reduced, product is improved
The market competitiveness.
Description of the drawings
With reference to the accompanying drawings in conjunction with the embodiments the present invention is further illustrated.
Fig. 1 is the inventive method execution flow chart.
Fig. 2 is present system theory diagram.
Specific embodiment
As shown in figure 1, multichannel of the present invention exchanges forceful electric power signal detecting method, methods described need to provide single-chip microcomputer and all the way
Exchange forceful electric power signal supervisory instrument above, the exchange forceful electric power signal supervisory instrument includes bleeder circuit, rectification circuit, filtering
Circuit and isolation circuit；Specifically include following steps：
Step 1, exchange forceful electric power signal pass through bleeder circuit so that the signal step-down of exchange forceful electric power；
Step 2, the exchange forceful electric power signal after step-down is sent to rectification circuit it is converted into direct current signal；
Step 3, direct current signal are converted into stable low-voltage dc signal by filter circuit；
Low-voltage dc signal in step 4, the exchange forceful electric power signal supervisory instrument is by isolation circuit to the monolithic
Whether machine, monolithic machine testing low-voltage dc signal is normal, if low-voltage dc signal is low level, the exchange forceful electric power signal inspection of Ze Gai roads
The exchange forceful electric power signal for surveying device detection is normal；It is no, then tested exchange forceful electric power signal is corresponded to for exception.
The isolation circuit be optical coupling isolation circuit, the rectification circuit be whole bridge rectifier circuit, the bleeder circuit
For safety electric capacity or metalfilmresistor.
As shown in Fig. 2 a kind of multichannel exchanges forceful electric power signal detection system, including single-chip microcomputer and all the way the above exchanges strong
Electrical signal detection device, all of exchange forceful electric power signal supervisory instrument is installed in parallel on single-chip microcomputer, the exchange forceful electric power
Signal supervisory instrument includes bleeder circuit, rectification circuit, filter circuit and isolation circuit；The bleeder circuit, rectification circuit,
Filter circuit is sequentially connected, and the filter circuit of each exchange forceful electric power signal supervisory instrument is connected respectively with single-chip microcomputer, the isolation electricity
Road is located between the filter circuit and single-chip microcomputer.
The isolation circuit be optical coupling isolation circuit, the rectification circuit be whole bridge rectifier circuit, the bleeder circuit
For safety electric capacity or metalfilmresistor.
Detection interface corresponding with exchange forceful electric power signal supervisory instrument number is additionally provided with the single-chip microcomputer, detection interface is used
In the exchange forceful electric power signal that connection is tested.Isolation circuit and the I/O on single-chip microcomputer in the exchange forceful electric power signal supervisory instrument
Interface connects.Each exchange forceful electric power signal supervisory instrument connects respectively tested exchange forceful electric power, realizes the same of multichannel AC forceful electric power
When detect.
As depicted in figs. 1 and 2, a kind of specific embodiment of the invention：
1st, the exchange forceful electric power signal number of detection is needed according to equipment under test, it is determined that needing the exchange forceful electric power signal inspection of connection
Device number is surveyed, then connects the exchange forceful electric power signal of equipment under test with the detection interface for exchanging forceful electric power signal supervisory instrument respectively
Connect.
2nd, the safety electric capacity (high withstand voltage electric capacity) or metalfilmresistor (high pressure resistant electricity in forceful electric power signal supervisory instrument is exchanged
Resistance) pass through capacitive reactance (or impedance) so that forceful electric power AC signal voltage mainly to put on and reach step-down mesh on electric capacity (or resistance)
's.If only detecting, full sine wave signal can carry out partial pressure using capacitive way, because electric capacity only consumes reactive power, and
Can be to carry out partial pressure using electric resistance partial pressure mode, because there is higher hamonic wave can cause to hold if imperfect sine wave signal is detected
Resistance is little to be may result in circuit overvoltage below and disturbs effective value measurement.Low-voltage ac signal after partial pressure will through rectifier bridge
It is changed into low pressure pulsation direct current signal.In prior art, typically high-voltage signal is switched to by transformer and rectifier bridge mode low
Pressure pulsating direct current signal.Because volume of transformer Pang is necessarily large and bulky, when there is multiple High voltage output ports to need detection in product,
It is necessarily large and bulky can testing equipment Pang.Using said method of the present invention, it is depressured by high withstand voltage electric capacity or resistance, you can full
The purpose that foot is depressured high-voltage AC signal, can simplify testing equipment again, make testing equipment small volume.
3rd, low pressure pulsation direct current signal is converted into by stable low pressure by the big capacitance filter capacitor of the filter circuit
Direct current signal.
4th, because the signal is not isolated using transformer, it is larger to directly input single-chip microcomputer risk, therefore this is straight
Stream signal drives the transmitting terminal of optocoupler.The isolation of signal is realized with optocoupler guarantees the safety of single-chip microcomputer, turns so as to solve voltage
Change and do not isolated brought risk using transformer is not yet in effect.
5th, the optocoupler receiving terminal of single-chip microcomputer receives the level that the isolation circuit of all exchange forceful electric power signal supervisory instruments occurs
Signal, judges whether AC signal is normal according to the change of the level of optocoupler receiving terminal, and low level is normal, and high level is different
Often.
If system output ac high-voltage signal is incomplete sine wave signal (such as SCR-output pressure regulation signal), only need by
The resistance to voltage capacitance of step 1 is changed to resistance to piezoresistance, optocoupler receiving terminal pull-up resistor and is changed to suitable resistance, and single-chip microcomputer is sampled just by ADC
The sinusoidal chopping signal of different virtual values can be distinguished, the higher explanation sine wave signal of magnitude of voltage is more complete.
In the present invention, due to exchanging forceful electric power signal supervisory instrument small volume, multiple can be installed in parallel on single-chip microcomputer, specifically
Exchange forceful electric power signal supervisory instrument number can be arranged according to the demand of equipment under test, 12 tunnels, 24 tunnels, 36 tunnels etc. can be set
Deng.
Although the foregoing describing the specific embodiment of the present invention, those familiar with the art should manage
Solution, the specific embodiment described by us is merely exemplary, rather than for the restriction to the scope of the present invention, is familiar with this
The technical staff in field should be covered the present invention's in the equivalent modification and change made according to the spirit of the present invention
In scope of the claimed protection.
Claims (10)
1. a kind of multichannel exchanges forceful electric power signal detecting method, it is characterised in that：Methods described need to provide single-chip microcomputer and all the way with
On exchange forceful electric power signal supervisory instrument, the exchange forceful electric power signal supervisory instrument include bleeder circuit, rectification circuit and filter
Wave circuit；Specifically include following steps：
Step 1, exchange forceful electric power signal pass through bleeder circuit so that the signal step-down of exchange forceful electric power；
Step 2, the exchange forceful electric power signal after step-down is sent to rectification circuit it is converted into direct current signal；
Step 3, direct current signal are converted into stable low-voltage dc signal by filter circuit；
Step 4, by single-chip microcomputer receive it is all exchange forceful electric power signal supervisory instruments in low-voltage dc signals, if low-voltage direct letter
Number it is low level, the exchange forceful electric power signal of Ze Gai roads exchange forceful electric power signal supervisory instrument detection is normal；It is no, then correspond to tested
Exchange forceful electric power signal is abnormal.
2. a kind of multichannel according to claim 1 exchanges forceful electric power signal detecting method, it is characterised in that：Methods described is also
Including isolation circuit；The step 4 is further specially：Low-voltage dc signal in the exchange forceful electric power signal supervisory instrument leads to
Isolation circuit is crossed to the single-chip microcomputer, whether monolithic machine testing low-voltage dc signal is normal, if low-voltage dc signal is low level,
The exchange forceful electric power signal of Ze Gai roads exchange forceful electric power signal supervisory instrument detection is normal；It is no, then correspond to tested exchange forceful electric power letter
Number for abnormal.
3. a kind of multichannel as claimed in claim 2 exchanges forceful electric power signal detecting method, it is characterised in that：The isolation circuit
For optical coupling isolation circuit.
4. a kind of multichannel as claimed in claim 1 exchanges forceful electric power signal detecting method, it is characterised in that：The rectification circuit
For whole bridge rectifier circuit.
5. a kind of multichannel as claimed in claim 1 exchanges forceful electric power signal detecting method, it is characterised in that：The bleeder circuit
For safety electric capacity or metalfilmresistor.
6. a kind of multichannel exchanges forceful electric power signal detection system, it is characterised in that：It include single-chip microcomputer with all the way more than exchange
Forceful electric power signal supervisory instrument, all of exchange forceful electric power signal supervisory instrument is installed in parallel on single-chip microcomputer, and the exchange is strong
Electrical signal detection device includes bleeder circuit, rectification circuit and filter circuit；The bleeder circuit, rectification circuit, filtered electrical
Road is sequentially connected, and the filter circuit of each exchange forceful electric power signal supervisory instrument is connected respectively with single-chip microcomputer.
7. a kind of multichannel according to claim 6 exchanges forceful electric power signal detection system, it is characterised in that：The exchange is strong
Electrical signal detection device also includes isolation circuit；The isolation circuit is located between the filter circuit and single-chip microcomputer.
8. a kind of multichannel as claimed in claim 7 exchanges forceful electric power signal detection system, it is characterised in that：The isolation circuit
For optical coupling isolation circuit.
9. a kind of multichannel as claimed in claim 6 exchanges forceful electric power signal detection system, it is characterised in that：The rectification circuit
For whole bridge rectifier circuit.
10. a kind of multichannel as claimed in claim 6 exchanges forceful electric power signal detection system, it is characterised in that：The partial pressure electricity
Road is safety electric capacity or metalfilmresistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710122630.XA CN106645903A (en) | 2017-03-03 | 2017-03-03 | Detection method and system for multi-channel alternating current strong current signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710122630.XA CN106645903A (en) | 2017-03-03 | 2017-03-03 | Detection method and system for multi-channel alternating current strong current signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106645903A true CN106645903A (en) | 2017-05-10 |
Family
ID=58847055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710122630.XA Pending CN106645903A (en) | 2017-03-03 | 2017-03-03 | Detection method and system for multi-channel alternating current strong current signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106645903A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571981A (en) * | 2009-05-26 | 2009-11-04 | 广州市新宇电子科技有限公司 | All-function power line alarming method and device thereof |
| CN201417302Y (en) * | 2009-06-09 | 2010-03-03 | 陕西海博瑞德微电子有限公司 | Intelligent power supply monitoring module |
| CN201615923U (en) * | 2009-12-08 | 2010-10-27 | 苏州新大诚科技发展股份有限公司 | Alternating current voltage measuring circuit |
| CN201867443U (en) * | 2010-10-21 | 2011-06-15 | 深圳拓邦股份有限公司 | Home appliance and mains supply strong current signal detection circuit thereof |
| CN202034767U (en) * | 2010-12-29 | 2011-11-09 | 福建俊豪电子有限公司 | Three-phase electrical network over-current monitoring alarm circuit |
| CN202330543U (en) * | 2011-11-17 | 2012-07-11 | 成都可为科技发展有限公司 | Multipath voltage measuring system |
| CN203250382U (en) * | 2013-05-29 | 2013-10-23 | 吴端钦 | Protection system for power voltage detection |
| CN204631107U (en) * | 2015-05-29 | 2015-09-09 | 天津市鲲鹏电子有限公司 | The multiple-channel output voltage automatic detection device of electronic transformer |
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2017
- 2017-03-03 CN CN201710122630.XA patent/CN106645903A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571981A (en) * | 2009-05-26 | 2009-11-04 | 广州市新宇电子科技有限公司 | All-function power line alarming method and device thereof |
| CN201417302Y (en) * | 2009-06-09 | 2010-03-03 | 陕西海博瑞德微电子有限公司 | Intelligent power supply monitoring module |
| CN201615923U (en) * | 2009-12-08 | 2010-10-27 | 苏州新大诚科技发展股份有限公司 | Alternating current voltage measuring circuit |
| CN201867443U (en) * | 2010-10-21 | 2011-06-15 | 深圳拓邦股份有限公司 | Home appliance and mains supply strong current signal detection circuit thereof |
| CN202034767U (en) * | 2010-12-29 | 2011-11-09 | 福建俊豪电子有限公司 | Three-phase electrical network over-current monitoring alarm circuit |
| CN202330543U (en) * | 2011-11-17 | 2012-07-11 | 成都可为科技发展有限公司 | Multipath voltage measuring system |
| CN203250382U (en) * | 2013-05-29 | 2013-10-23 | 吴端钦 | Protection system for power voltage detection |
| CN204631107U (en) * | 2015-05-29 | 2015-09-09 | 天津市鲲鹏电子有限公司 | The multiple-channel output voltage automatic detection device of electronic transformer |
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