CN107817376A - A kind of negative half period waveform blanking amplitude sampling apparatus - Google Patents
A kind of negative half period waveform blanking amplitude sampling apparatus Download PDFInfo
- Publication number
- CN107817376A CN107817376A CN201711128231.0A CN201711128231A CN107817376A CN 107817376 A CN107817376 A CN 107817376A CN 201711128231 A CN201711128231 A CN 201711128231A CN 107817376 A CN107817376 A CN 107817376A
- Authority
- CN
- China
- Prior art keywords
- circuit
- blanking
- half period
- negative half
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Amplifiers (AREA)
Abstract
The present invention relates to a kind of negative half period waveform blanking amplitude sampling apparatus, including：One signal conditioning circuit, one negative half period blanking circuit, one filtering and port protection circuit, one processor and a power supply circuit, the power supply circuit respectively with the signal conditioning circuit, the negative half period blanking circuit, the filtering and port protection circuit and the processor are electrically connected with, the signal conditioning circuit is electrically connected with the negative half period blanking circuit, the negative half period blanking circuit is electrically connected with the filtering and port protection circuit, the filtering and port protection circuit are electrically connected with the processor, the incoming end for accessing signal is drawn on the signal conditioning circuit.A kind of negative half period waveform blanking amplitude sampling apparatus of the present invention, realizes negative half period waveform blanking function, and higher sampling resolution is still kept being sampled in the case that value pressure difference is very big and sampling precision requirement is higher.
Description
Technical field
The present invention relates to electrical circuit to sample field, more particularly to a kind of negative half period waveform blanking amplitude sampling apparatus.
Background technology
At present, processor is all positive supply power supply in design of electronic circuits, and the waveform containing positive-negative half-cycle is adopted
During sample, processing scheme is typically all that DC offset voltage is provided on the basis of the mid-point voltage of processor supply voltage, is actually adopted
Sample voltage maximum amplitude only has the half of processor supply voltage.This design be sampled value pressure difference it is smaller, sampling essence
Spend it is less demanding in the case of be widely used.But will when value pressure difference is very big, sampling precision requirement is higher if be sampled
The low hidden danger of sampling resolution is exposed, actual samples precision is not reached design requirement.
The content of the invention
The purpose of the present invention is to be directed to above-mentioned present situation, there is provided a kind of negative half period waveform blanking amplitude sampling apparatus.
The technical solution adopted by the present invention is：A kind of negative half period waveform blanking amplitude sampling apparatus, including a signal condition
Circuit, a negative half period blanking circuit, a filtering and port protection circuit, a processor and a power supply circuit, the power supply circuit
Respectively with the signal conditioning circuit, the negative half period blanking circuit, it is described filtering and port protection circuit and the processor
It is electrically connected with, the signal conditioning circuit is electrically connected with the negative half period blanking circuit, the negative half period blanking circuit and institute
State filtering and port protection circuit is electrically connected with, the filtering and port protection circuit are electrically connected with the processor, described
The incoming end for accessing signal is drawn on signal conditioning circuit, the signal conditioning circuit is handled the signal of access,
And provide conditioned signal；The negative half period blanking circuit receive the conditioned signal and carrying out eliminate negative half period waveform and amplification or
Attenuation processing, finally provide blanking signal；The filtering and port protection circuit receive the blanking signal, are filtered and clamp
Adjustment blanking signal is provided behind position；The processor receives the adjustment blanking signal and carries out letter to the adjustment blanking signal
Number sampling；The power supply circuit is the signal conditioning circuit, the negative half period blanking circuit, the filtering and port protection electricity
Road and processor power supply.
The present invention effect be：A kind of negative half period waveform blanking amplitude sampling apparatus of the present invention, realize negative half
All waveform blanking functions, higher sampling is still kept being sampled in the case that value pressure difference is very big and sampling precision requirement is higher
Resolution ratio.
Brief description of the drawings
Fig. 1 show a kind of schematic diagram of negative half period waveform blanking amplitude sampling apparatus provided by the invention；
Fig. 2 show the circuit diagram of negative half period blanking circuit in Fig. 1；
Fig. 3 show the circuit diagram of filtering and port protection circuit in Fig. 1；
In figure：1-signal conditioning circuit, 2-negative half period blanking circuit, 3-filtering and port protection circuit, 4-processing
Device, 5-power supply circuit.
Embodiment
Negative half period waveform blanking amplitude sampling apparatus provided by the invention is introduced below in conjunction with the accompanying drawings：
Referring to Fig. 1, it is a kind of negative half period waveform blanking amplitude sampling apparatus provided by the invention, it includes：One signal
Modulate circuit 1, a negative half period blanking circuit 2, one filtering and port protection circuit 3, a processor 4 and a power supply circuit 5, it is described
Power supply circuit 5 respectively with the signal conditioning circuit 1, the negative half period blanking circuit 2, it is described filtering and port protection circuit 3
And the processor 4 is electrically connected with, the signal conditioning circuit 1 is electrically connected with the negative half period blanking circuit 2, described negative half
All blanking circuits 2 are electrically connected with the filtering and port protection circuit 3, the filtering and port protection circuit 3 and the place
Reason device 4 is electrically connected with, and the incoming end for accessing signal is drawn on the signal conditioning circuit 1.
The signal conditioning circuit 1 is handled the signal of access, and provides conditioned signal, makes its output voltage with after
Negative half period blanking circuit is held to share reference point.According to different design requirements, signal conditioning circuit can be completed a variety of
Processing, such as charge/voltage conversion, current/voltage-converted, frequency/voltage conversion, voltage/voltage conversion, impedance conversion, isolation
Conversion etc..
The negative half period blanking circuit 2 receives the conditioned signal and eliminate at negative half period waveform and amplification or decay
Reason, finally provides blanking signal, its positive half cycle waveform exported is met the voltage request of back-end processor.
The negative half period blanking circuit 2 includes two-way operational amplifier U1, first resistor R1, second resistance R2, the 3rd electricity
Hinder R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the first electric capacity C1, the 3rd electric capacity C3, the 4th electric capacity C4, the one or two
Pole pipe D1 and the second diode D2.Input and institute of the one end of the first resistor R1 as the negative half period blanking circuit 2
State signal conditioning circuit 1 to be electrically connected with, the other end of the first resistor R1 draws with the second of the two-way operational amplifier U1
Pin, the negative electrode of the first diode D1 and the 3rd resistor R3 one end connection, the anode of the first diode D1 with
The first pin connection of the two-way operational amplifier U1, the other end of the 3rd resistor R3 is with the second diode D2's
Anode and the 4th resistance R4 one end connect, the negative electrode of the second diode D2 and the first of the operational amplifier U1
Pin connects, the other end of the 4th resistance R4 and one end of the 5th resistance R5, the first electric capacity C1 one end and described
Two-way operational amplifier U1 the 6th pin connection, the other end of the 5th resistance R5 and the first electric capacity C1 other end and institute
Two-way operational amplifier U1 the 7th pin connection is stated, Single port is drawn at the 7th pin of the two-way operational amplifier U1 and makees
For negative half period blanking circuit output end, one end of the second resistance R2 and the 3rd pin of the two-way operational amplifier U1 connect
Connect, the other end of second resistance R2 ground connection, the of one end of the 6th resistance R6 and the two-way operational amplifier U1
Five pins connect, the other end ground connection of the 6th resistance R6, one end and the two-way operation amplifier of the 3rd electric capacity C3
Device U1 the 8th pin connection, the other end ground connection of the 3rd electric capacity C3, one end and the two-way of the 4th electric capacity C4
Operational amplifier U1 the 4th pin connection, the other end ground connection of the 4th electric capacity C4.
In the present embodiment, the two-way operational amplifier U1 concrete models are TL082.
In the present embodiment, the first diode D1 and the second diode D2 concrete models are ES1J.
In the present embodiment, the first resistor R1 and the 4th resistance R4 resistance value are 20K Ω, second electricity
It is 10K Ω to hinder R2, the 3rd resistor R3, the 5th resistance R5, the 6th resistance R6 resistance values.
In the present embodiment, the first electric capacity C1 capacitance is 100pF, and the 3rd electric capacity C3 capacitance is 100nF, the 4th
Electric capacity C4 capacitance is 100nF.
The operation principle of the negative half period blanking circuit 2 is described below：
When input signal Vi waveforms are in positive half cycle, the first diode D1 cut-offs, the 2nd D2 conductings, two-way operation amplifier
Path is formed between device U1, first resistor R1,3rd resistor R3, the second diode D2, now, two-way operational amplifier U1,
Four resistance R4, the 5th resistance R5 form path and form reverse proportion operational amplifier, therefore, when input waveform Vi is positive half cycle
When, the output voltage V of the circuit is as shown by the equation：
From formula it can be seen that when input signal is positive half cycle, output waveform is also positive half cycle, and simply amplitude is fitted
When the processing of multiple, multiplication factor can be adjusted by changing R1, R3, R4, R5 resistance, realize the amplification of waveform or decline
Subtract.
When input signal Vi waveforms are in negative half period, the first diode D1 conductings, the second diode D2 cut-offs, two-way fortune
Calculate and form path between amplifier U1, first resistor R1, the first diode D1, now, two-way operational amplifier U1, the 4th resistance
R4, the 5th resistance R5 form path and form reverse proportion operational amplifier, and its output voltage is 0V.Therefore, as input signal Vi
For negative half period when, output signal is always 0V.
The filtering and port protection circuit 3 receive the blanking signal, are filtered and adjustment blanking is provided after clamper
Signal.Mainly prime output waveform is filtered for filtering and processor port protection circuit 3 and the function such as clamper, protection processing
AD sample ports on device 4 are not damaged by prime output waveform.
The filtering and port protection circuit 3 include the 7th resistance R7, the second electric capacity C2 and clamp diode D3.Described
Seven resistance R7 one end connects as the input of the filtering and port protection circuit and the negative half period blanking circuit output end
Connect, the other end of the 7th resistance R7 connects with one end of the second electric capacity C2 and the 3rd pin of the clamp diode D3
Connect, the other end ground connection of the second electric capacity C2, the first pin ground connection of the clamp diode D3, the clamp diode D3
The 3rd pin draw Single port as it is described filtering and port protection circuit output end.
In the present embodiment, the clamp diode D3 concrete models are MMBD7000/SOT23.
In the present embodiment, the resistance of the 7th resistance R7 is 1K Ω.
In the present embodiment, the second electric capacity C2 capacitance is 1nF.
The processor 4 receives the adjustment blanking signal and carries out signal sampling to the adjustment blanking signal.
The processor 4 is connected with the output end of the filtering and port protection circuit.
The power supply circuit 5 is that the signal conditioning circuit 1, the negative half period blanking circuit 2, the filtering and port are protected
Protection circuit 3 and the processor 4 are powered.
When using negative half period waveform blanking amplitude sampling apparatus, signal is inputted from signal conditioning circuit 1, the signal
Modulate circuit 1 issues the negative half period blanking circuit 2 after signal is handled, the negative half period blanking circuit 2 enters to signal
Signal after processing is simultaneously sent to the filtering and port protection circuit 3, the filtering and port protection by the blanking of row negative half period
Signal is issued the processor 4 by circuit 3 again, and the processor 4 samples to signal.
A kind of negative half period waveform blanking amplitude sampling apparatus of the present invention, realizes negative half period waveform blanking function,
Higher sampling resolution is still kept being sampled in the case that value pressure difference is very big and sampling precision requirement is higher.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (6)
- A kind of 1. negative half period waveform blanking amplitude sampling apparatus, it is characterised in that including：One signal conditioning circuit, a negative half period Blanking circuit, one filtering and port protection circuit, a processor and a power supply circuit, the power supply circuit respectively with the signal Modulate circuit, the negative half period blanking circuit, the filtering and port protection circuit and the processor are electrically connected with, the letter Number modulate circuit is electrically connected with the negative half period blanking circuit, the negative half period blanking circuit and the filtering and port protection Circuit is electrically connected with, and the filtering and port protection circuit are electrically connected with the processor, are drawn on the signal conditioning circuit Go out the incoming end for accessing signal, the signal conditioning circuit is handled the signal of access, and provides conditioned signal；Institute State negative half period blanking circuit to receive the conditioned signal and carry out eliminating negative half period waveform and amplification or attenuation processing, there is provided blanking Signal；The filtering and port protection circuit receive the blanking signal, are filtered and adjustment blanking signal is provided after clamper； The processor receives the adjustment blanking signal and carries out signal sampling to the adjustment blanking signal；The power supply circuit is The signal conditioning circuit, the negative half period blanking circuit, the filtering and port protection circuit and processor power supply.
- 2. negative half period waveform blanking amplitude sampling apparatus as claimed in claim 1, it is characterised in that the negative half period blanking electricity Road includes two-way operational amplifier, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the One electric capacity, the 3rd electric capacity, the 4th electric capacity, the first diode and the second diode, one end of the first resistor is as described negative The input of half cycle blanking circuit is electrically connected with the signal conditioning circuit, the other end of the first resistor and the two-way One end connection of the second pin of operational amplifier, the negative electrode of first diode and the 3rd resistor, the described 1st The anode of pole pipe is connected with the first pin of the two-way operational amplifier, the other end of the 3rd resistor and the described 2nd 2 One end of the anode of pole pipe and the 4th resistance connects, the negative electrode of second diode and the first of the operational amplifier Pin is connected, and the other end of the 4th resistance is transported with one end of the 5th resistance, one end of the first electric capacity and the two-way The 6th pin connection of amplifier is calculated, the other end of the 5th resistance and the other end of the first electric capacity are put with the two-way computing 7th pin of big device is connected, and Single port is drawn at the 7th pin of the two-way operational amplifier as negative half period blanking circuit Output end, one end of the second resistance are connected with the 3rd pin of the two-way operational amplifier, the second resistance it is another One end is grounded, and one end of the 6th resistance is connected with the 5th pin of the two-way operational amplifier, the 6th resistance The other end is grounded, and one end of the 3rd electric capacity is connected with the 8th pin of the two-way operational amplifier, the 3rd electric capacity Other end ground connection, one end of the 4th electric capacity is connected with the 4th pin of the two-way operational amplifier, and the described 4th is electric The other end ground connection of appearance.
- 3. negative half period waveform blanking amplitude sampling apparatus as claimed in claim 2, it is characterised in that the filtering and port are protected Protection circuit includes the 7th resistance, the second electric capacity and clamp diode, and one end of the 7th resistance is as the filtering and port The input of protection circuit is connected with the negative half period blanking circuit output end, the other end and described second of the 7th resistance 3rd pin of one end of electric capacity and the clamp diode connects, the other end ground connection of second electric capacity, the clamper two The first pin ground connection of pole pipe, the 3rd pin of the clamp diode draw Single port as the filtering and port protection electricity The output end on road.
- 4. negative half period waveform blanking amplitude sampling apparatus as claimed in claim 3, it is characterised in that the processor with it is described The connection of the output end of filtering and port protection circuit.
- 5. negative half period waveform blanking amplitude sampling apparatus as claimed in claim 4, it is characterised in that the two-way operation amplifier Implement body model TL082, first diode and the second diode concrete model are ES1J.
- 6. negative half period waveform blanking amplitude sampling apparatus as claimed in claim 5, it is characterised in that the clamp diode tool Body model MMBD7000/SOT23.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711128231.0A CN107817376B (en) | 2017-11-15 | 2017-11-15 | Negative half-cycle waveform blanking amplitude sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711128231.0A CN107817376B (en) | 2017-11-15 | 2017-11-15 | Negative half-cycle waveform blanking amplitude sampling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107817376A true CN107817376A (en) | 2018-03-20 |
| CN107817376B CN107817376B (en) | 2023-09-05 |
Family
ID=61609146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711128231.0A Active CN107817376B (en) | 2017-11-15 | 2017-11-15 | Negative half-cycle waveform blanking amplitude sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107817376B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2620392A (en) * | 1948-12-17 | 1952-12-02 | Pye Ltd | Black level control in television transmission |
| GB2049363A (en) * | 1979-04-30 | 1980-12-17 | Motorola Ltd | RF signal detectors |
| JPH01100934A (en) * | 1987-10-14 | 1989-04-19 | Hitachi Ltd | Electron beam tester |
| TWM375184U (en) * | 2009-10-13 | 2010-03-01 | Foreshot Ind Corp | Control module for power conversion of lamp |
| CN101658711A (en) * | 2009-08-06 | 2010-03-03 | 朱贺明 | Frequency-controlled pulsating semi-wave non-contact human static eliminator |
| CN102005753A (en) * | 2010-11-22 | 2011-04-06 | 中国石油大学(北京) | Peak overvoltage eliminator |
| CN102364857A (en) * | 2011-02-01 | 2012-02-29 | 杭州士兰微电子股份有限公司 | Primary side constant current switching power controller and method |
| CN203761288U (en) * | 2014-03-31 | 2014-08-06 | 江西科技学院 | Precise rectifier with integral circuit |
| CN104883131A (en) * | 2015-04-23 | 2015-09-02 | 天津大学 | Single channel acquisition device of bioelectricity and orthogonal triangular wave modulation multichannel signals, and acquisition method |
| CN205656227U (en) * | 2016-03-08 | 2016-10-19 | 武汉合康智能电气有限公司 | On -vehicle motor output current sampling circuit that fills |
| CN107179432A (en) * | 2017-06-02 | 2017-09-19 | 深圳巴斯巴科技发展有限公司 | A kind of automobile charging box and its current effective value measuring method |
-
2017
- 2017-11-15 CN CN201711128231.0A patent/CN107817376B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2620392A (en) * | 1948-12-17 | 1952-12-02 | Pye Ltd | Black level control in television transmission |
| GB2049363A (en) * | 1979-04-30 | 1980-12-17 | Motorola Ltd | RF signal detectors |
| JPH01100934A (en) * | 1987-10-14 | 1989-04-19 | Hitachi Ltd | Electron beam tester |
| CN101658711A (en) * | 2009-08-06 | 2010-03-03 | 朱贺明 | Frequency-controlled pulsating semi-wave non-contact human static eliminator |
| TWM375184U (en) * | 2009-10-13 | 2010-03-01 | Foreshot Ind Corp | Control module for power conversion of lamp |
| CN102005753A (en) * | 2010-11-22 | 2011-04-06 | 中国石油大学(北京) | Peak overvoltage eliminator |
| CN102364857A (en) * | 2011-02-01 | 2012-02-29 | 杭州士兰微电子股份有限公司 | Primary side constant current switching power controller and method |
| CN203761288U (en) * | 2014-03-31 | 2014-08-06 | 江西科技学院 | Precise rectifier with integral circuit |
| CN104883131A (en) * | 2015-04-23 | 2015-09-02 | 天津大学 | Single channel acquisition device of bioelectricity and orthogonal triangular wave modulation multichannel signals, and acquisition method |
| CN205656227U (en) * | 2016-03-08 | 2016-10-19 | 武汉合康智能电气有限公司 | On -vehicle motor output current sampling circuit that fills |
| CN107179432A (en) * | 2017-06-02 | 2017-09-19 | 深圳巴斯巴科技发展有限公司 | A kind of automobile charging box and its current effective value measuring method |
Non-Patent Citations (1)
| Title |
|---|
| 胡斌\N\N\N,孙安龙: "彩色电视机电路识读常识连载(6) 亮度通道电路", no. 09 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107817376B (en) | 2023-09-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104426491B (en) | Operational amplification circuit, active electrode and electricity physiological signal acquisition system | |
| CN207380121U (en) | A kind of negative half period waveform blanking amplitude sampling apparatus | |
| CN107817376A (en) | A kind of negative half period waveform blanking amplitude sampling apparatus | |
| CN109581043A (en) | A kind of high direct voltage signal acquisition circuit | |
| CN104569610B (en) | A kind of tiny differential capacitance measuring circuit | |
| CN106989793A (en) | Sample circuit and detection means | |
| CN202794285U (en) | Isolation processing circuit for small analog alternating current (AC) or direct current (DC) signals | |
| CN206281870U (en) | Acceleration transducer | |
| CN206004646U (en) | Numeral input multiplex circuit | |
| CN104038161A (en) | Module for amplifying signals in gas concentration detection system of transformer substation | |
| CN211878070U (en) | Test module | |
| CN209043964U (en) | Current sensor | |
| CN203894320U (en) | Voltage measuring device | |
| CN203608158U (en) | Ultralow noise analog amplifier of three-dimensional resistivity acquiring system | |
| CN206490664U (en) | Analog quantity modulate circuit | |
| CN207732431U (en) | A kind of circuit filtering out differential mode and common mode interference | |
| CN206878783U (en) | A kind of signal amplification circuit for saliva onset of ovulation detection device | |
| CN207251584U (en) | Service transacting intelligent management system based on block chain technology | |
| CN206002585U (en) | Perception for electric fire disaster monitoring and resistive load share signal processor | |
| CN206178519U (en) | 0 10V voltage signal changes 10mA electric current signal circuit | |
| CN205352418U (en) | Signal isolation alternaties composite set | |
| CN211928867U (en) | Middle school magnetic bioelectricity physical experiment device | |
| CN103473029B (en) | A kind of multiplier | |
| CN207638637U (en) | A kind of Aviation Test data acquisition circuit isolation module | |
| CN106091909A (en) | A kind of inductive displacement transducer circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 430205 Floor 3, Multi storey Factory Building, Hekang Frequency Conversion (Wuhan) Industrial Park, No. 6, Fozuling Third Road, Donghu New Technology Development Zone, Wuhan, Hubei Province (Wuhan Area, Free Trade Zone) Applicant after: Wuhan Hezhi Digital Energy Technology Co.,Ltd. Address before: No.6, fozuling Third Road, Donghu Development Zone, Wuhan City, Hubei Province 430205 Applicant before: WUHAN HICONICS INTELLIGENT ELECTRIC CO.,LTD. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |