CN108681275A - The compensation method of modulate circuit output voltage parameter and device is isolated in voltage linear - Google Patents
The compensation method of modulate circuit output voltage parameter and device is isolated in voltage linear Download PDFInfo
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- CN108681275A CN108681275A CN201810401205.9A CN201810401205A CN108681275A CN 108681275 A CN108681275 A CN 108681275A CN 201810401205 A CN201810401205 A CN 201810401205A CN 108681275 A CN108681275 A CN 108681275A
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- voltage
- modulate circuit
- compensation
- output voltage
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
- G05B19/0425—Safety, monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
- G05B2219/2612—Data acquisition interface
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Measurement Of Current Or Voltage (AREA)
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Abstract
The present invention relates to a kind of isolation modulate circuit output voltage parameter compensation method of voltage linear and devices, belong to voltage signal acquisition compensation field.Method includes：Obtain at least all the way voltage linear isolation modulate circuit output voltage；It is read from pre-stored output voltage compensation parameter and obtains that corresponding described at least the output voltage compensation parameter of modulate circuit is isolated in voltage linear all the way；Using the output voltage compensation parameter read respectively to acquire at least voltage linear is isolated the output voltage of modulate circuit and is compensated all the way, obtain at least voltage after the compensation of voltage linear isolation modulate circuit all the way.The present invention solves the problems, such as that existing compensation method and device process are complicated, stability is poor and needs periodic calibration.
Description
Technical field
The present invention relates to voltage signal processing technology field more particularly to a kind of voltage linear isolation modulate circuit output electricity
Pressure parametrization compensation method and device.
Background technology
In many commercial measurements such as automated detection system, computer data acquisition system, industrial control system, often
Needing will be in multichannel in-site modeling signal acquisition to microprocessor.During acquisition, various interference signals all can be with quilt
Measuring signal enters in microprocessor, these signal superpositions can make the accuracy of measurement in useful measured signal, be
Realize voltage linear conversion and the electrical noise interference at scene be not introduced into control system, it is necessary to by circuit-under-test with
Control circuit is isolated and then is improved electrically realizing.
At present using it is more be that modulate circuit is isolated in voltage based on linear optical coupling, which, which passes through, chooses similar resistance
Input resistance and output resistance keep output voltage equal with input voltage.However, due to electronic component parameter itself exist from
Dissipate property so that in high-accuracy voltage acquisition system, it is necessary to pick out two matched resistance of resistance value by debugging repeatedly, make up
The error that circuit components parameter is brought spends the time long, inefficiency, and success rate is low.
Invention content
In view of above-mentioned analysis, the present invention is intended to provide a kind of voltage linear isolation modulate circuit output voltage parameterization is mended
Compensation method and device solve the problems, such as inefficiency during the isolation conditioning of current collection voltages, low success rate of.
The purpose of the present invention is mainly achieved through the following technical solutions：
On the one hand, the embodiment provides the output electricity for obtaining at least voltage linear isolation modulate circuit all the way
Pressure；
It is read from pre-stored output voltage compensation parameter and obtains at least voltage linear isolation tune all the way
Manage the output voltage compensation parameter of circuit；
Utilize the output voltage compensation parameter read at least voltage linear isolation all the way to acquiring respectively
The output voltage of modulate circuit compensates, and obtains at least voltage after the compensation of voltage linear isolation modulate circuit all the way.
On the basis of said program, any road output voltage in the pre-stored output voltage compensation parameter is mended
Parameter is repaid to be determined according to the ratio of the road voltage linear isolation modulate circuit input terminal voltage and output end voltage.
On the basis of said program, by it is described at least all the way voltage linear isolation modulate circuit in per all the way output electricity
The roads Ya Yugai output voltage compensation parameters is multiplied, and obtains at least electricity after the compensation of voltage linear isolation modulate circuit all the way
Pressure.
Further include the voltage after the output voltage linear isolation modulate circuit compensation on the basis of said program.
On the basis of said program, the output voltage for obtaining at least voltage linear isolation modulate circuit includes：
On the basis of said program, the per output progress all the way of modulate circuit are isolated more to the voltage linear that needs obtain
Secondary acquisition obtains multi collect result；
On the basis of said program, the multi collect result for every road voltage linear being isolated modulate circuit carries out root mean square
Filtering obtains the output voltage of every road voltage linear isolation modulate circuit.
Second aspect provides a kind of voltage linear isolation modulate circuit output voltage parameter compensation device, including：
AD acquisition modules, for obtains at least all the way voltage linear be isolated modulate circuit output voltage；
Read module obtains at least electricity all the way for being read from pre-stored output voltage compensation parameter
The output voltage compensation parameter of crimping sexual isolation modulate circuit；
Voltage compensation module, for using the output voltage compensation parameter read respectively to it is acquired obtain to
The output voltage of the few isolation of voltage linear all the way modulate circuit compensates, and obtains at least voltage linear isolation conditioning all the way
Voltage after circuit compensation.
Further include memory on the basis of said program, for storing the output voltage compensation parameter；Any road institute
The ratio that output voltage compensation parameter is stated according to the road voltage linear isolation modulate circuit input terminal voltage and output end voltage is true
It is fixed.
On the basis of said program, the voltage compensation module, for electricity will to be exported per output voltage all the way and the road
It presses compensating parameter to be multiplied, obtains at least voltage after the compensation of voltage linear isolation modulate circuit all the way.
Further include communication module on the basis of said program, for compensating voltage linear isolation modulate circuit
Voltage output afterwards is to host computer.
On the basis of said program, the memory is FLASH chip；Compensating parameter is stored respectively by write operation
In different internal storage locations in FLASH chip；Phase is read from the internal storage location of FLASH chip by read operation in inquiry
The output voltage compensation parameter answered..
Said program has the beneficial effect that：
Using the compensation way of parametrization, the error generated due to electronic component parameter discrete, operation letter are compensated for
It is single easy, it solves the error generated due to the electronic components parameter discrete such as resistance or linear optical coupling in available circuit, keeps away
Exempt from by very long complicated calibration process needed for the matching of fixed resistance value in conventional method, and calibrated by adjustable resistance
Resistance value is unstable afterwards, needs the problem of periodic calibration during use.
Precisely compensated for the isolation modulate circuit per voltage linear all the way, can be achieved at the same time plurality of voltages linearly every
The acquisition of output voltage from modulate circuit, improves efficiency.
By the way that compensating parameter is disposably arranged, it is subsequently not necessarily to periodic adjustment, operating process is simple and practicable and reliability.Both
Voltage acquisition precision is improved, production efficiency is also improved.
Methods and apparatus of the present invention is based on identical principle, therefore can reach identical technique effect.
Other features and advantages of the present invention will illustrate in the following description, also, partial become from specification
It obtains it is clear that understand through the implementation of the invention.The purpose of the present invention and other advantages can be by the explanations write
Specifically noted structure is realized and is obtained in book, claims and attached drawing.
Description of the drawings
Attached drawing is only used for showing the purpose of specific embodiment, and is not considered as limitation of the present invention, in entire attached drawing
In, identical reference mark indicates identical component.
Fig. 1 is flow chart of the embodiment of the present invention；
Fig. 2 is structure drawing of device of the embodiment of the present invention.
Specific implementation mode
Specifically describing the preferred embodiment of the present invention below in conjunction with the accompanying drawings, wherein attached drawing constitutes the application part, and
It is used to illustrate the principle of the present invention together with embodiments of the present invention.
Embodiment of the method
As shown in Figure 1, the present embodiment is related to a kind of voltage linear isolation modulate circuit output voltage parameter compensation method,
Include the following steps：
Step S1, obtain at least all the way voltage linear isolation modulate circuit output voltage.
The output voltage for acquiring the roads M voltage linear isolation modulate circuit simultaneously, can be completed at the same time outside 1 tunnel or multiloop loop system
The acquisition of supply voltage, 1≤M≤N can at most arrive the roads N, improve collecting efficiency and adaptability.N is pre-stored output electricity
Compensating parameter number is pressed, is also the total quantity of corresponding voltage linear isolation modulate circuit.
The compensating parameter of all voltage linears isolation modulate circuit (being denoted as the roads N) is stored in advance, according to actually adopting
Collection needs that therein one or more is selected to carry out voltage acquisition, and compensates.
Optionally, by AD acquisition modules, corresponding acquisition obtains at least output of voltage linear isolation modulate circuit all the way respectively
Voltage obtains digital voltage, is convenient for subsequent compensation operation.
Single-point acquiring may cause result inaccurate due to interference or the presence of burr, in order to improve the standard of voltage acquisition
Exactness can select to carry out multi collect respectively to every road output voltage, carry out root mean square filtering to multi collect result, obtain
Reject the voltage value after interference effect, the output voltage as the road.
Specifically, being carried out to the output that modulate circuit is isolated per voltage linear all the way that needs compensate using AD acquisition modules
Multi collect obtains multi collect result；The multi collect result for every road voltage linear being isolated modulate circuit carries out root mean square
Filtering obtains the output voltage of every road voltage linear isolation modulate circuit, when being acquired using AD acquisition modules with eliminating, by
There is a problem of causing result inaccurate in interference or burr.
Step S2, read from pre-stored output voltage compensation parameter obtain it is corresponding described at least voltage linear all the way
The output voltage compensation parameter of modulate circuit is isolated.
It is follow-up without adjusting using disposable storage compensating parameter in advance, improve efficiency and reliability.
When it is implemented, being previously stored with the roads N output voltage compensation parameter, output voltage compensation parameter therein can be under
The mode of stating obtains：
Distinguish on-load voltage Vin1 to VinN in N number of voltage linear isolation modulate circuit (1) input terminal, Vin1 to VinN makees
The theoretical value of modulate circuit (1) output voltage is isolated for N number of voltage linear, can be provided by system external power；
Test obtains the voltage value of N number of voltage linear isolation modulate circuit (1) output port, is recorded as X1 to XN respectively,
The actual value of modulate circuit (1) output voltage is isolated as N number of voltage linear by X1 to XN；
By the ratio of every road output voltage theoretical value and actual value, obtain per the isolation modulate circuit of voltage linear all the way
(1) output voltage compensation parameter K1 to KN.
Specific formula for calculation is represented by：Ki=Vini/Xi, wherein i values are 1 to N.
Optionally, it obtains above-mentioned N number of voltage linear by multimeter or other voltage measuring apparatus that modulate circuit is isolated is defeated
Go out the theoretical value and actual value of voltage, those skilled in the art should be understood that any side that can obtain above-mentioned voltage value
Formula can apply to the present invention, and reach identical effect.
In order to improve the pre-stored accuracy per road output voltage compensation parameter, the above-mentioned roads N voltage linear is being obtained
When the output voltage compensation parameter of modulate circuit is isolated, the above-mentioned theoretical value per road voltage linear isolation modulate circuit output voltage
It is to be obtained after multi collect result is averaged with actual value.
The roads the N compensating parameter being calculated is stored.It, can be arbitrarily selected to ensure the non-loss of storage result
The component of function is preserved after power-off with data.
Illustratively, it may be selected outside piece or on-chip memory completed.Preferably FLASH chip passes through FLASH Read-write Catrols
Compensating parameter is written in FLASH chip module, and is preserved.FLASH chip is power down nonvolatile storage, ensure that number
According to sustainable utilization.
Optionally, the roads N compensating parameter can be stored by the form of table or data pair, any to clearly show often
Road voltage linear isolation modulate circuit and the storage mode of the road compensating parameter correspondence can be applied to the present invention.
It can search to obtain above-mentioned Multi-path electricity from the compensating parameter of the pre-stored roads N by way of addressing or retrieving
The corresponding compensating parameter of crimping sexual isolation modulate circuit, reading obtain, are used for subsequent compensation.
Preferably, the roads N compensating parameter is respectively stored in FLASH chip by write operation (or other power down is non-volatile deposits
Reservoir) in N number of different internal storage locations in (such as from No. 1 internal storage location in FLASH chip to N internal storage locations, it is each in
Memory cell stores a compensating parameter)；Corresponding road is obtained from the internal storage location of FLASH chip by read operation in inquiry
Compensating parameter is used for the output voltage compensation of corresponding acquisition channel.
Step S3, the output voltage compensation parameter read at least pressure-wire all the way to acquiring respectively is utilized
The output voltage of sexual isolation modulate circuit compensates, and obtains the electricity after at least voltage linear isolation modulate circuit compensates all the way
Pressure.
Specifically, output voltage compensation can be carried out by processor chips (3).The roads M voltage is read by AD acquisition modules (5)
The voltage value of the M port AD of linear isolation modulate circuit (1) output, while being read by FLASH in FLASH Read-write Catrols port
It writes control module (6) and reads the corresponding roads the M compensating parameter that FLASH chip (2) preserves, read respectively with AD acquisition modules (5)
M voltage value arriving, which corresponds to, to be multiplied, and the voltage acquisition result after being compensated is denoted as Vo1 to VoM, complete M road voltage compensations and
Gatherer process.
To meet the needs of commercial measurement, the voltage linear isolation conditioning of the roads M can also be exported on the basis of said program
Voltage after circuit compensation, output can realize that, according to the difference of communication mode, selection is specific by data communication module (7)
Data communication module (7), such as wireless communication module, bluetooth, wire communication module.
The present embodiment：
Using the compensation way of parametrization, the error generated due to electronic component parameter discrete, operation letter are compensated for
It is single easy, it solves the error generated due to the electronic components parameter discrete such as resistance or linear optical coupling in available circuit, keeps away
Exempt from by very long complicated calibration process needed for the matching of fixed resistance value in conventional method, and calibrated by adjustable resistance
Resistance value is unstable afterwards, needs the problem of periodic calibration during use.
Precisely compensated for the isolation modulate circuit per voltage linear all the way, can be achieved at the same time plurality of voltages linearly every
The acquisition of output voltage from modulate circuit, improves efficiency.
By the way that compensating parameter is disposably arranged, it is subsequently not necessarily to periodic adjustment, operating process is simple and practicable and reliability.Both
Voltage acquisition precision is improved, production efficiency is also improved.
Device embodiment
As shown in Fig. 2, present embodiments providing a kind of voltage linear isolation modulate circuit output voltage parameterization compensation dress
It sets, for implementing any compensation method in above method embodiment.
The compensation device includes AD acquisition modules, the output electricity for obtaining at least voltage linear isolation modulate circuit all the way
Pressure；Read module, for read from pre-stored output voltage compensation parameter obtain it is corresponding described at least pressure-wire all the way
The output voltage compensation parameter of sexual isolation modulate circuit；Voltage compensation module, for being mended using the output voltage read
Repay parameter respectively to it is acquired obtain at least all the way voltage linear be isolated modulate circuit output voltage compensate, obtain institute
State the voltage after at least voltage linear isolation modulate circuit compensates all the way.
AD acquisition modules are respectively used to obtain the output voltage of the roads M voltage linear isolation modulate circuit and through analog-to-digital conversion
Processing.1≤M≤N, N are the sum that modulate circuit is isolated in voltage linear.
Voltage compensation module realizes that read module is FLASH Read-write Catrol modules using processor chips.The roads N output electricity
Pressure compensating parameter is stored in advance in memory；Memory is preferably FLASH chip.
Those skilled in the art should be understood that, any processor for having AD pins or capableing of external A/D chip
Chip can be suitably used for the present invention, and optionally, the present embodiment uses DSP2812 chips, has 16 AD pins on chip, i.e., not
In the case that increase extends out A/D chip, the compensation to 16 tunnel collection voltages can be realized.But it according to actual needs, can be by outer
The mode for expanding A/D chip increases number of channels, and the compensation of modulate circuit voltage is isolated for realizing more multichannel voltage linear, only needs
The compensating parameter for extending out the corresponding voltage linear isolation modulate circuit voltage in channel storage is carried out in advance can be realized.
When it is implemented, while AD acquisition module collection voltages, processor chips are logical in FLASH Read-write Catrols port
It crosses FLASH Read-write Catrol modules and reads corresponding compensating parameter, carried out after being compensated after supplement operation via processor chips
Voltage.
The transmission of voltage and follow-up use after being compensated for realization, which further includes communication module, is used for the M
The voltage output after modulate circuit compensation is isolated to host computer in road voltage linear.Communication module will be after compensation by SCI interfaces
For voltage output to communication interface circuit (4), the voltage after being compensated the roads M by communication interface circuit is transmitted to host computer.
It should be noted that above method embodiment and device embodiment are based on identical principle, it is same or similar it
Place can mutually use for reference, and can reach identical technique effect.
It will be understood by those skilled in the art that realizing all or part of flow of above-described embodiment method, meter can be passed through
Calculation machine program is completed to instruct relevant hardware, and the program can be stored in computer readable storage medium.Wherein, institute
It is disk, CD, read-only memory or random access memory etc. to state computer readable storage medium.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.
Claims (10)
1. modulate circuit output voltage parameter compensation method is isolated in a kind of voltage linear, which is characterized in that include the following steps：
Obtain at least all the way voltage linear isolation modulate circuit output voltage；
It is read from pre-stored output voltage compensation parameter and obtains that corresponding described at least voltage linear isolation conditioning is electric all the way
The output voltage compensation parameter on road；
Modulate circuit is isolated to the every road voltage linear acquired respectively using the output voltage compensation parameter read
Output voltage compensate, obtain the voltage per road voltage linear after the compensation of isolation modulate circuit.
2. parametrization compensation method according to claim 1, it is characterised in that：The pre-stored output voltage compensation
Parameter includes multichannel, and any road output voltage compensation parameter therein is according to the road voltage linear isolation modulate circuit input terminal electricity
Pressure and the ratio of output end voltage determine.
3. parametrization compensation method according to claim 2, it is characterised in that：By the every road pressure-wire acquired
The output voltage of sexual isolation modulate circuit is multiplied with the road output voltage compensation parameter, obtains described per road voltage linear isolation tune
Manage the voltage after circuit compensation.
4. the parametrization compensation method according to one of claim 1-3, it is characterised in that：It further include the output pressure-wire
Voltage after the compensation of sexual isolation modulate circuit.
5. the parametrization compensation method according to one of claim 1-4, it is characterised in that：An acquisition at least pressure-wire
The output voltage of sexual isolation modulate circuit includes：
The every output all the way for the voltage linear that needs obtain being isolated modulate circuit carries out multi collect, obtains multi collect knot
Fruit；
To every road voltage linear be isolated modulate circuit multi collect result carry out root mean square filtering, obtain every road voltage linear every
Output voltage from modulate circuit.
6. modulate circuit output voltage parameter compensation device is isolated in a kind of voltage linear, which is characterized in that including：
AD acquisition modules, for obtains at least all the way voltage linear be isolated modulate circuit output voltage；
Read module, for read from pre-stored output voltage compensation parameter obtain it is corresponding described at least pressure-wire all the way
The output voltage compensation parameter of sexual isolation modulate circuit；
Voltage compensation module, for using the output voltage compensation parameter read respectively to acquired at least one obtained
The output voltage of road voltage linear isolation modulate circuit compensates, and obtains at least voltage linear isolation modulate circuit all the way
Voltage after compensation.
7. parametrization compensation device according to claim 6, it is characterised in that：Further include memory, it is described for storing
Output voltage compensation parameter；Modulate circuit input terminal is isolated according to the road voltage linear in output voltage compensation parameter described in any road
The ratio of voltage and output end voltage determines.
8. parametrization compensation device according to claim 6, it is characterised in that：The voltage compensation module, being used for will be every
Output voltage is multiplied with the road output voltage compensation parameter all the way, obtains that described at least voltage linear isolation modulate circuit is mended all the way
Voltage after repaying.
9. the parametrization compensation device according to one of claim 5-7, it is characterised in that：Further include communication module, is used for
By the voltage output after voltage linear isolation modulate circuit compensation to host computer.
10. the parametrization compensation device according to claim 6-7, it is characterised in that：The memory is FLASH chip；
The compensating parameter is respectively stored in by write operation in the different internal storage locations in FLASH chip；By read operation from
Corresponding output voltage compensation parameter is read in the internal storage location of FLASH chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810401205.9A CN108681275B (en) | 2018-04-28 | 2018-04-28 | Output voltage parametric compensation method and device for voltage linear isolation conditioning circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810401205.9A CN108681275B (en) | 2018-04-28 | 2018-04-28 | Output voltage parametric compensation method and device for voltage linear isolation conditioning circuit |
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| Publication Number | Publication Date |
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| CN108681275A true CN108681275A (en) | 2018-10-19 |
| CN108681275B CN108681275B (en) | 2020-03-17 |
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Citations (4)
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|---|---|---|---|---|
| CN2872495Y (en) * | 2005-12-27 | 2007-02-21 | 李斌 | Analog signal converting and isolating module |
| CN101076053A (en) * | 2007-06-21 | 2007-11-21 | 吴壬华 | Method and circuit for multi-channel photoelectric isolated voltage |
| CN103235202A (en) * | 2012-08-20 | 2013-08-07 | 苏州大学 | Multi-channel analog signal acquisition system with automatic compensation function |
| CN103596319A (en) * | 2012-08-14 | 2014-02-19 | 华润矽威科技（上海）有限公司 | A non-isolated LED driving system and a non-isolated LED driving constant-current control circuit |
-
2018
- 2018-04-28 CN CN201810401205.9A patent/CN108681275B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2872495Y (en) * | 2005-12-27 | 2007-02-21 | 李斌 | Analog signal converting and isolating module |
| CN101076053A (en) * | 2007-06-21 | 2007-11-21 | 吴壬华 | Method and circuit for multi-channel photoelectric isolated voltage |
| CN103596319A (en) * | 2012-08-14 | 2014-02-19 | 华润矽威科技（上海）有限公司 | A non-isolated LED driving system and a non-isolated LED driving constant-current control circuit |
| CN103235202A (en) * | 2012-08-20 | 2013-08-07 | 苏州大学 | Multi-channel analog signal acquisition system with automatic compensation function |
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