CN104157126B - A kind of method for gathering signal and the device with multi-channel signal acquiring - Google Patents
A kind of method for gathering signal and the device with multi-channel signal acquiring Download PDFInfo
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- CN104157126B CN104157126B CN201410424501.2A CN201410424501A CN104157126B CN 104157126 B CN104157126 B CN 104157126B CN 201410424501 A CN201410424501 A CN 201410424501A CN 104157126 B CN104157126 B CN 104157126B
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Abstract
The present invention provides a kind of method for gathering signal and the device with multi-channel signal acquiring, wherein, MCU module first passes through the analog signal after the amplification module amplification of collection signal, the data signal after comparison is obtained by signal comparison module again, the acquisition mode that the data signal and analog signal being achieved in that are combined, avoid and only gather the single of data signal, the semaphore of simulation can not be learnt.The Quick Acquisition of digital circuit has been played, the complete collection of analog signal, the two has fully been combined together, and has been applied to infrared touch, the sweep speed of infrared touch has been improved, the convenience of production is greatly improved.
Description
Technical field
The present invention relates to data collecting field, more particularly to a kind of method for being capable of high speed acquisition signal and there is multichannel
The device of signal acquisition.
Background technology
In the prior art, before AD signals are gathered, first analog signal is amplified, then the analog signal after amplification is subjected to mould
Number conversion, and information processing is carried out to control unit by bus transfer.During this, the time length of sampling is received, not only
System resource is wasted, has an effect on the operational efficiency of whole system.
In the prior art, also a kind of mode of signal sampling is to pass through analog signal to pass through data signal comparator,
Compare and draw 0 or 1, be transmitted further to control unit and carry out information processing.This process, although shortening the time of signal sampling,
But because the result that data signal comparator is relatively drawn only has 0 or 1, control unit receives the letter that data signal comparator transmits
Number only 0 or 1, control unit can not receive actual signal value.When some analog signals are sufficiently close to the critical of datum
During point, data signal comparator erroneous judgement can be caused, carry out hidden danger to product quality detection band, be unfavorable for actual production and test is produced
The judgement of quality.
The content of the invention
In view of the above-mentioned technical problem present invention provides a kind of method for gathering signal, including：
Step 1：Initial signal is amplified by signal amplification module is amplified signal；
Step 2：MCU module passes through the first multichannel collecting amplified signal；
Step 3：MCU module passes through second according to the reference signal of the amplified signal setting signal comparison module of collection
Multichannel is by reference signal transmission to signal comparison module；
Step 4：Amplified signal is transferred to signal comparison module by signal amplification module；
Step 5：Signal comparison module is carried out according to the reference signal of the channel transmission of MCU module second with amplified signal
Compare, draw comparative result；
Step 6：The comparative result of 3rd multichannel reception signal comparison module of MCU module.
Preferably, also include before step 1 in methods described：
MCU module is initialized, removes acquired signal in MCU module internal memory.
Preferably, step 2 also includes in methods described：
The amplified signal of first multichannel collecting is stored into internal memory by MCU module.
Preferably, step 3 also includes in methods described：
MCU module is according to the amplified signal being stored into internal memory, the reference signal of setting signal comparison module.
Preferably, also include in methods described：
Signal amplification module can be provided with multichannel and is simultaneously amplified different initial signals by multichannel
Obtain different amplified signals；
First multichannel of MCU module is provided with multichannel and by multichannel while can gather the amplification of different numerical value
Signal；
MCU module sets the reference signal of corresponding signal comparison module according to the amplified signal of different numerical value, and passes through
Second channel transmission gives the signal comparison module with multichannel；
The amplified signal of different numerical value is transferred to the signal comparison module with multichannel by multi channel signals amplification module；
MCU module receives the comparative result of multi channel signals comparison module by the 3rd multichannel.
Preferably, the channel transmission of MCU module, the channel transmission of signal amplification module and signal comparison module is more
Passage can simultaneous transmission difference numerical value signal.
Preferably, the amplified signal of the first multichannel collecting of MCU module difference numerical value, and believed according to the amplification of different numerical value
The reference signal of number corresponding signal comparison module of setting；
MCU module gives the reference signal transmission to multi channel signals comparison module by the second multichannel；
Multi channel signals comparison module receives the amplified signal that multi channel signals amplification module sends different numerical value；
The corresponding amplification letter with reference to comparison signal from different numerical value that multi channel signals comparison module provides according to MCU module
Number corresponding comparison draws different comparative results；
MCU module receives the different comparative results of multi channel signals comparison module by the 3rd multichannel.
Preferably, methods described also includes：
When the initial signal that signal amplification module receives fluctuates, there is ripple simultaneously in the amplified signal of signal amplification module
Dynamic, MCU module is according to the first multichannel collecting to there is the amplified signal fluctuated, and adjustment signal comparison module is set accordingly
Surely comparison signal is referred to；
MCU module gives the setting of adjustment to signal comparison module with reference to comparison signal by the second channel transmission；
Signal comparison module refers to comparison signal compared with the amplified signal for occurring fluctuating according to the setting of adjustment.
A kind of device with multi-channel signal acquiring, including：Multi channel signals amplification module, multi channel signals compare mould
Block and MCU module；
The MCU module includes the first multichannel, the second multichannel and the 3rd multichannel；
The multi channel signals amplification module connects with the multi channel signals comparison module and first multichannel respectively
Connect, for the initial signal of different numerical value to be zoomed into the amplified signal of different numerical value, and be transferred to the multi channel signals ratio
Compared with module and first multichannel；
The multi channel signals comparison module respectively with the multi channel signals amplification module, second multichannel and institute
State the connection of the 3rd multichannel, for receive the MCU module according to the amplified signal of different numerical value set out it is corresponding with reference to than
The amplified signal of the different numerical value transmitted compared with signal and the multi channel signals amplification module, and the reference of different numerical value is compared
Signal is obtained a result from the corresponding comparison of the amplified signal of different numerical value, is transferred to the MCU module；
The MCU module is used for the amplification letter for gathering the different numerical value of the multi channel signals amplification module amplification in real time
Number, set out according to the amplified signal of collection and refer to comparison signal accordingly, be transferred to the multi channel signals comparison module and enter
Row compares, and when amplified signal fluctuates, the MCU module adjusts the transmission multi channel signals comparison module in real time
With reference to comparison signal, and receive the comparative result of the multi channel signals comparison module.
Preferably, the comparative result that the multi channel signals comparison module is drawn includes numeral 0 or numeral 1.
As can be seen from the above technical solutions, the present invention has advantages below：
In the present invention, MCU module first passes through the analog signal after the amplification module amplification of collection signal, then passes through signal ratio
The data signal after comparison is obtained compared with module, the acquisition mode that the data signal and analog signal being achieved in that are combined, is kept away
Exempt from only to gather the single of data signal, the semaphore of simulation can not be learnt.The Quick Acquisition of digital circuit, simulation letter are played
Number complete collection, the two is fully combined together, and be applied to infrared touch, improves the sweep speed of infrared touch,
The convenience of production is set to be greatly improved.
In the present invention, the reference value that data signal compares is to change adjustment in real time according to initial signal, because MCU moulds
Block is by gathering the reference fiducial value of the amplified signal setting signal comparison module of signal amplification module.When initial Fluctuation of analytical signal is adjusted
Whole, the amplified signal of signal amplification module also changes therewith, and MCU module adjusts signal ratio by gathering the variation of amplified signal
Compared with the reference fiducial value of module so that the comparative result of signal comparison module is more accurate.
Brief description of the drawings
In order to illustrate more clearly of technical scheme, the required accompanying drawing used in description will be made below simple
Ground introduction, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ordinary skill
For personnel, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the method overall flow figure of collection signal provided by the invention；
Fig. 2 is the overall schematic of the device provided by the invention with multi-channel signal acquiring.
Embodiment
To enable goal of the invention, feature, the advantage of the present invention more obvious and understandable, will use below specific
Embodiment and accompanying drawing, the technical scheme protected to the present invention are clearly and completely described, it is clear that implementation disclosed below
Example is only part of the embodiment of the present invention, and not all embodiment.Based on the embodiment in this patent, the common skill in this area
All other embodiment that art personnel are obtained under the premise of creative work is not made, belong to the model of this patent protection
Enclose.
In the present embodiment, there is provided a kind of method for gathering signal, refer to shown in Fig. 1,
S1：Initial signal is amplified by signal amplification module is amplified signal；
Specifically, initial signal here refers to primary simulation signal, signal amplification module enters primary simulation signal
Row amplification, so carries out anti-interference process equivalent to by analog signal, filters out interference ripple, play a part of filtering.
S2：MCU module passes through the first multichannel collecting amplified signal；
Here by the first multichannel collecting to the analog signal by amplification, avoiding MCU module can only lead to MCU module
Cross signal comparison module and receive 0 or 1, and actual analog signal values can not be obtained, further avoid analog signal and referring to
During the critical point of level, data signal comparator erroneous judgement can be caused, carry out hidden danger to product quality detection band.
S3：MCU module is and logical by more than second according to the reference signal of the amplified signal setting signal comparison module of collection
Road is by reference signal transmission to signal comparison module；
Specifically, reference signal of the MCU module by the second multichannel setting signal comparison module, reference signal here
For reference analog signal, that is, signal comparison module by analog signal to be measured compared with reference analog signal, can obtain
Go out 0 or 1 two result.
S4：Amplified signal is transferred to signal comparison module by signal amplification module；
Here signal amplification module gives the analog signal transmission after amplification to signal comparison module, makes signal comparison module
By analog signal to be measured compared with reference analog signal.
S5：Signal comparison module according to the reference signal of the channel transmission of MCU module second compared with amplified signal,
Draw comparative result；
It is understood that reference signal and amplified signal are analog signal, the object that signal comparison module compares is
Analog signal, and the result that signal comparison module is drawn is data signal, that is, 0 or 1 two result.
S6：The comparative result of 3rd multichannel reception signal comparison module of MCU module.
It is understood that MCU module passes through compared with the 3rd multichannel reception signal that is connected with signal comparison module
The result that module is drawn, that is, 0 or 1 two result.
In the present embodiment, also include before step S1：MCU module is initialized, removed in MCU module internal memory
Acquired signal.Exactly the information of memory storage in MCU module is purged, before signal acquisition is performed every time, MCU
The erasing of information of internal memory is avoided original informational influence to the result of this Signal acquiring and processing by module.
In the present embodiment, also include in step s 2：The amplified signal of first multichannel collecting is stored into by MCU module
In internal memory, so that follow-up work is extracted.
In the present embodiment, also include in step s3：MCU module is according to the amplified signal being stored into internal memory, setting
The reference signal of signal comparison module.
In the present embodiment, MCU module, signal amplification module and signal comparison module can take multichannel, and
Multichannel can simultaneous transmission difference numerical value signal.
Specifically, signal amplification module can be provided with multichannel and simultaneously be entered different initial signals by multichannel
Row amplification obtains different amplified signals；First multichannel of MCU module is provided with multichannel and can be by multichannel simultaneously
Gather different amplified signals；MCU module sets the reference signal of corresponding signal comparison module according to different amplified signals,
And give the signal comparison module with multichannel by the second channel transmission；Multi channel signals amplification module is by different amplifications
Signal is transferred to the signal comparison module with multichannel；MCU module receives multi channel signals by the 3rd multichannel and compares mould
The comparative result of block.So improve the whole efficiency of the efficiency, also lifting system of signal transmission.
In the present embodiment, the amplified signal of the first multichannel collecting of MCU module difference numerical value, and according to different numerical value
The reference signal of the signal comparison module of amplified signal setting respective value；MCU module is by the second multichannel by the reference
Signal is transferred to multi channel signals comparison module；Multi channel signals comparison module receives multi channel signals amplification module and sent not
With the amplified signal of numerical value；Multi channel signals comparison module accordingly refers to comparison signal and different numbers according to what MCU module provided
The corresponding comparison of amplified signal of value draws different comparative results；MCU module receives multi channel signals by the 3rd multichannel
The different comparative results of comparison module.
It follows that in the present invention, (Micro Control Unit, microcontroller or single-sheet miniature calculate MCU module
Machine or single-chip microcomputer) analog signal after the amplification module amplification of collection signal is first passed through, then compared by signal comparison module
Data signal afterwards, the acquisition mode that the data signal and analog signal being achieved in that are combined, avoid and only gather numeral
Signal it is single, the semaphore of simulation can not be learnt.Play the Quick Acquisition of digital circuit, the complete collection of analog signal,
The two is fully combined together, and is applied to infrared touch, improves the sweep speed of infrared touch, makes the convenience of production
It is greatly improved.
In the present invention, the reference value that data signal compares is to change adjustment in real time according to initial signal, because MCU moulds
Block is by gathering the reference fiducial value of the amplified signal setting signal comparison module of signal amplification module.When initial Fluctuation of analytical signal is adjusted
Whole, the amplified signal of signal amplification module also changes therewith, and MCU module adjusts signal ratio by gathering the variation of amplified signal
Compared with the reference fiducial value of module so that the comparative result of signal comparison module is more accurate.
In order to be better understood from technical scheme, below with a specific embodiment explanation：
Assuming that primary simulation signal is A by the value of signal amplification module, MCU module gathers amplified analog signal A, and root
Reference analog signal according to the amplified analog signal A setting signal comparison modules of collection is B, and is passed B by the second multichannel
Defeated to arrive signal comparison module, amplified analog signal A is transferred to signal comparison module by synchronous signal amplification module.
Reference analog signal B compared with amplified analog signal A, is worked as A by signal comparison module>B, it is judged as 1；Work as A<
B, it is judged as 0.Result is transferred to MCU module by signal comparison module.So MCU module can not only receive signal comparison module
Comparative result such as 0 or 1, moreover it is possible to receive the analog value from signal amplification module.If A and B analog quantity is very close, or
When person's amplified signal A is fluctuated, MCU module can be adjusted with reference to mould according to from the analog value A of signal amplification module
Intend signal B so that the comparison reference analog signal B of signal comparison module can be adjusted dynamically, not done by outside environmental elements
Disturb.
Here exemplified by being specifically numerical value, it is assumed that primary simulation signal is by the value of multi channel signals amplification module
5.001v, 4.995v, 5.1v, 4.95v.MCU module collection amplified signal value is 5.001v, 4.995v, 5.1v, 4.8v.MCU moulds
The reference value of block setting signal comparison module can set the comparison reference of this collection signal according to the weighted average method that counts
Value.Measuring and calculating of the reference value of this signal comparison module Jing Guo MCU module is set as 5.011v.I.e. numerical signal is more than 5.011v
Then it is judged as 1, is then judged as 0 less than 5.011v.
In this collection, 5.001v, 4.995v, 4.95v are respectively less than 5.011v and are then judged as 0, and 5.1v is more than
5.011v it is judged as 1.So MCU module has obtained the numerical value of analog quantity simultaneously, the numerical value of the digital quantity also obtained.
If in gatherer process, the signal of analog quantity changes, and MCU module, will according to the weighted average method that counts
Adjustment comparison reference in real time, ensure the accuracy and dynamic of comparative result.Certain MCU module setting signal comparison module
Reference value can also be set such as variance method, or standard deviation method, specific establishing method in other way and not done here
Limit.
In the present invention, there is provided a kind of device with multi-channel signal acquiring, refer to shown in Fig. 2, including：Multichannel
Signal amplification module 1, multi channel signals comparison module 2 and MCU module 3；
The MCU module 3 includes the first multichannel, the second multichannel and the 3rd multichannel；
The multi channel signals amplification module 1 respectively with the multi channel signals comparison module 2 and first multichannel
Connection, for the initial signal of different numerical value to be zoomed into the amplified signal of different numerical value, and is transferred to the multi channel signals
Comparison module 2 and first multichannel；
The multi channel signals comparison module 2 respectively with the multi channel signals amplification module 1, second multichannel and
The 3rd multichannel connection, corresponding reference is set out for receiving the MCU module 3 according to the amplified signal of different numerical value
The amplified signal of comparison signal and the different numerical value of the multi channel signals amplification module 1 transmission, and by the reference of different numerical value
Comparison signal is obtained a result from the corresponding comparison of the amplified signal of different numerical value, is transferred to the MCU module 3；
The MCU module 3 is used for the amplification letter for gathering the different numerical value that the multi channel signals amplification module 1 amplifies in real time
Number, set out according to the amplified signal of collection and refer to comparison signal accordingly, be transferred to the multi channel signals comparison module 2 and enter
Row compares, and when amplified signal fluctuates, the multi channel signals comparison module 2 is transmitted in adjustment to the MCU module 3 in real time
Reference comparison signal, and receive the comparative result of the multi channel signals comparison module 2.
Wherein, the comparative result that the multi channel signals comparison module 2 is drawn includes numeral 0 or numeral 1.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (8)
- A kind of 1. method for gathering signal, it is characterised in that including：Initial signal is amplified by signal amplification module is amplified signal；Signal amplification module can be provided with multichannel simultaneously Different initial signals is amplified simultaneously by multichannel to obtain different amplified signals；First multichannel of MCU module be provided with multichannel and can by multichannel and meanwhile gather different numerical value amplification believe Number；The amplified signal of different numerical value is transferred to the signal comparison module with multichannel by multi channel signals amplification module；MCU module will join according to the reference signal of the amplified signal setting signal comparison module of collection, and by the second multichannel Examine signal and be transferred to multi channel signals comparison module；Multi channel signals comparison module receives the amplified signal that multi channel signals amplification module sends different numerical value；The corresponding amplified signal phase with reference to comparison signal from different numerical value that multi channel signals comparison module provides according to MCU module It is corresponding relatively to draw different comparative results；Multi channel signals comparison module according to the reference signal of the channel transmission of MCU module second compared with amplified signal, Draw comparative result；MCU module receives the comparative result of multi channel signals comparison module by the 3rd multichannel.
- 2. the method for collection signal according to claim 1, it is characterised in thatMethod also includes：MCU module is initialized, removes acquired signal in MCU module internal memory.
- 3. the method for collection signal according to claim 1, it is characterised in thatMethod also includes：The amplified signal of first multichannel collecting is stored into internal memory by MCU module.
- 4. the method for collection signal according to claim 1, it is characterised in thatMethod also includes：MCU module is according to the amplified signal being stored into internal memory, the reference signal of setting signal comparison module.
- 5. the method for collection signal according to claim 1, it is characterised in thatThe multichannel of the channel transmission of MCU module, the channel transmission of signal amplification module and signal comparison module can The signal of simultaneous transmission difference numerical value.
- 6. the method for collection signal according to claim 1, it is characterised in thatMethod also includes：When the initial signal that signal amplification module receives fluctuates, the amplified signal of signal amplification module fluctuates simultaneously, MCU module to there is the amplified signal fluctuated, and adjusts the setting of signal comparison module accordingly according to the first multichannel collecting With reference to comparison signal；MCU module gives the setting of adjustment to signal comparison module with reference to comparison signal by the second channel transmission；Signal comparison module refers to comparison signal compared with the amplified signal for occurring fluctuating according to the setting of adjustment.
- A kind of 7. device with multi-channel signal acquiring, it is characterised in that including：Multi channel signals amplification module, multichannel Signal comparison module and MCU module；The MCU module includes the first multichannel, the second multichannel and the 3rd multichannel；The multi channel signals amplification module is connected with the multi channel signals comparison module and first multichannel respectively, is used In the initial signal of different numerical value to be zoomed into the amplified signal of different numerical value, and it is transferred to the multi channel signals comparison module With first multichannel；The multi channel signals comparison module respectively with the multi channel signals amplification module, second multichannel and described Three multichannels connect, and compare letter for receiving the MCU module and setting out to refer to accordingly according to the amplified signal of different numerical value Number and multi channel signals amplification module transmission different numerical value amplified signal, and by the reference comparison signal of different numerical value Obtained a result from the corresponding comparison of the amplified signal of different numerical value, be transferred to the MCU module；The MCU module is used for the amplified signal for gathering the different numerical value of the multi channel signals amplification module amplification in real time, root Set out according to the amplified signal of collection and refer to comparison signal accordingly, be transferred to the multi channel signals comparison module and compared Compared with, and when amplified signal fluctuates, the MCU module adjusts the reference for transmitting the multi channel signals comparison module in real time Comparison signal, and receive the comparative result of the multi channel signals comparison module.
- 8. the device of signal acquisition according to claim 7, it is characterised in thatThe comparative result that the multi channel signals comparison module is drawn includes numeral 0 or numeral 1.
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| CN101902223A (en) * | 2010-08-19 | 2010-12-01 | 河南科技大学 | Channel presetting method for analog-digital joint data acquisition device |
| CN102088292A (en) * | 2010-12-23 | 2011-06-08 | 东莞市创锐电子技术有限公司 | Multi-path gain adaptive matched signal acquisition method and device thereof |
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| KR20060117509A (en) * | 2005-05-11 | 2006-11-17 | 최태순 | Senser |
| CN100492912C (en) * | 2006-11-14 | 2009-05-27 | 北京中星微电子有限公司 | Signal processing method and device |
| CN201540469U (en) * | 2009-08-24 | 2010-08-04 | 北京阿尔泰科技发展有限公司 | Data acquiring device |
| CN202075717U (en) * | 2010-10-27 | 2011-12-14 | 硕擎科技股份有限公司 | Converting system for image sensor signal from analog signal to digital signal |
| CN103324363B (en) * | 2013-07-15 | 2016-08-10 | 广州视睿电子科技有限公司 | Photoelectric signal processing device and infrared touch screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101902223A (en) * | 2010-08-19 | 2010-12-01 | 河南科技大学 | Channel presetting method for analog-digital joint data acquisition device |
| CN102088292A (en) * | 2010-12-23 | 2011-06-08 | 东莞市创锐电子技术有限公司 | Multi-path gain adaptive matched signal acquisition method and device thereof |
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