CN103915051B - Method for controlling display of nixie tube - Google Patents
Method for controlling display of nixie tube Download PDFInfo
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- CN103915051B CN103915051B CN201210592302.3A CN201210592302A CN103915051B CN 103915051 B CN103915051 B CN 103915051B CN 201210592302 A CN201210592302 A CN 201210592302A CN 103915051 B CN103915051 B CN 103915051B
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Abstract
The invention discloses a method for controlling the display of a nixie tube. The display of the nixie tube is controlled through precise signal acquisition, acquired signal filtering and special signal processing in display. The implementation process is simple, the stability of the display of the nixie tube is improved, and the generation of error messages is minimized.
Description
Technical field
The present invention relates to numeral method technical field, more particularly to a kind of method for controlling numeral method.
Background technology
Charactron is widely used in various fields, such as automobile, household electrical appliances, instrument as the component with information prompting function
Instruments and meters etc..The display of charactron is divided into static state display and dynamic scanning displaying, and display information comes from various sensor collections
Signal.Because static state display can take more processor I/O mouth lines, normally only suitable for applied field that figure place showing is less
Close.When charactron is worked in dynamic scanning displaying mode, driving chip is when the data of sensor collection are received, it is necessary to stop number
Code pipe scanning, due to the various interference sources of sensor, charactron can be caused to occur, and display brightness is unstable and display mistake is believed
The phenomenon of breath.
Regarding to the issue above, the present invention proposes a kind of method for controlling numeral method, to solve to be driven due to charactron
Attribute feature causes charactron the problem of display brightness stability difference and display error message occur to chip in itself.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of method for controlling numeral method, is adopted by accurate signal
The display of the mode logarithmic code pipe that specially treated is carried out to signal when collection, collection signal filtering, display is controlled, and improves number
The stability that code pipe shows, reduces the generation of error message to greatest extent, and the method is realized simple.
To reach above-mentioned purpose, the present invention is achieved through the following technical solutions：
A kind of method for controlling numeral method, including,
Obtain sampled signal；
Treatment is filtered to the sampled signal for obtaining using recurrence average filtering algorithm；
By the signal write driver chip after the filtering process, charactron is driven to be shown.
It is described acquisition sampled signal the step of include,
The data-signal that sensor is gathered is sampled using A/D modular converters；
When A/D sample complete when, sampled signal is obtained by filtering process, using recursion mode by the sampled signal according to
It is secondary to be put into the first queue with predetermined amount of storage；
When A/D samplings are not completed, the sampled signal in the first queue with predetermined amount of storage keeps constant.
Wherein, a kind of recurrence average filtering algorithm of implementation method includes,
Every the time of the first filtering process time threshold, sampled signal in the first queue is found by sort algorithm
Minimum and maximum value, and be respectively placed in the head of the queue and tail of the queue of first queue；
The minimum and maximum value in first queue is excluded, other sampled signals in queue are carried out being averaging computing, will
The result that computing acquisition is averaging to first queue is used as the signal after filtering process.
The recurrence average filtering algorithm of another embodiment includes,
Every the time of the first filtering process time threshold, sampled signal in the first queue is found by sort algorithm
Minimum and maximum value, and be respectively placed in the head of the queue and tail of the queue of first queue；
The minimum and maximum value in first queue is excluded, other sampled signals in the queue is carried out being averaging computing,
The result that computing acquisition is averaging to first queue is put into the second queue with predetermined amount of storage in recursion mode；
Every the time of the second filtering process time threshold, sampled signal in the second queue is found by sort algorithm
Maximum and minimum value, and be respectively placed in the head of the queue and tail of the queue of second queue；
The minimum and maximum value in second queue is excluded, other sampled signals in the second queue are averaging
Computing, using the result that computing acquisition is averaging to second queue as the signal after filtering process.
Technical scheme, signal is carried out during by accurate signal acquisition, collection signal filtering, display special
The display of the mode logarithmic code pipe for the treatment of is controlled, and the method implementation process is simple, it is not necessary to complicated Mathematical Modeling, improves
The stability of numeral method, reduces the generation of error message to greatest extent.
Brief description of the drawings
Fig. 1 is the method flow diagram of the control numeral method of first embodiment of the invention；
Fig. 2 is the method flow diagram of the control numeral method of second embodiment of the invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
In technical solution of the present invention, charactron is worked in dynamic scanning displaying mode, for driving chip attribute in itself
Feature（When the data of sensor collection are received, it is necessary to stop charactron scanning）, using targetedly algorithm to write driver
Data in chip are processed, and make up the interference that the various interference sources of sensor are caused, and solve numeral method brightness unstable
Fixed and display error message problem.The process of present invention control numeral method is divided into three steps：
1）Obtain sampled signal；
2）Treatment is filtered to the sampled signal using recurrence average filtering algorithm；
3）Signal after the filtering process drives numeral method.
Fig. 1 is the method flow diagram of the control numeral method of first embodiment of the invention.As shown in figure 1, the method bag
Include following steps：
Step 101：The data-signal that sensor is gathered is sampled using A/D modular converters；
In the present embodiment, A/D modular converters are deposited using 12 A/D converters inside singlechip chip by clock
Device overflows the mode of triggering, and A/D collection translation functions are started in timer interrupt service program, and 12 A/D converters can
Reach accurately sampling rate：
Wherein, sampling rate needs to consider the display speed of charactron, in addition it is also necessary to consider the frequency of noise, theory sampling speed
Rate needs to reach more than the twice of numeral method frequency, just can guarantee that distortionless recovering signal.
Step 102：Judge whether A/D samplings complete；When A/D samples to be completed, sampled signal is obtained by filtering process,
The sampled signal is sequentially placed into the first queue of default predetermined amount of storage using recursion mode, performs step 103；When
When A/D samplings are not completed, the sampled signal in the first queue with predetermined amount of storage keeps constant, performs step 103；
In the present embodiment, judge that A/D changes success or not in main program, the whole main program cycle time is more than sampling week
Phase.
After the completion of A/D samplings, preliminary sampling value filtering is carried out by simple limit filtration mode, removal pulse is done
Disturb, then filtering numerical value storage to numerical value buffering area.
A first queue for predetermined amount of storage is pre-defined, the queue is empty queue, by the sampled signal successively
Be put into queue, after first sampled signal is put into, sampled data be located at queue afterbody, queue due to not being occupied full,
Subsequent step is not carried out, and is to continue with being put into sampled signal toward queue the inside, after being put into second sampled signal, first
The sampled signal being put into can move one to Head-of-line, be always ensured that the last data being put into are located at the afterbody of queue, according to
Above-mentioned recursion mode takes in placing data into the queue up to queue is sampled signal.
Step 103：Judge whether timer timing statisticses and the first filtering process time threshold meet predetermined condition；As completely
Foot, performs step 104；Such as it is unsatisfactory for, jumps out this and perform flow；
The timer is single-chip microcomputer internal timing/counter, can program when performing clock keep synchronous.
The predetermined condition can be configured according to actual conditions, and in the present embodiment, predetermined condition is counted for timer
Time is 0 with filtering process time threshold remainder result（Timer timing statisticses % filtering process time threshold==0）, according to sentencing
Disconnected result performs corresponding step.
Step 104：The minimum and maximum value of sampled signal in the queue is found by sort algorithm, and is respectively placed in team
The head of the queue and tail of the queue of row；
Strict limitation is not done to the sort algorithm, can be using Bubble Sort Algorithm, quick sorting algorithm etc..This
Bubble Sort Algorithm is used in embodiment, adjacent two sampled signals in queue are compared successively, small sampled signal is placed on
Head of the queue, big sampled signal is put behind, and the step is repeated, until can not again exchange.
Step 105：The minimum and maximum value in queue is excluded, other sampled signals in queue are carried out being averaging fortune
Calculate, the result of computing acquisition will be averaging to the first queue as the signal after filtering process；
Step 106：Numeral method is carried out to the signal after the filtering process.
Because the attribute feature of driving chip itself, it is necessary to when digital die is driven, reduce and number as far as possible
The call duration time of pipe driving chip.Therefore, when the sampled signal average value after by filtration treatment writes to driving chip, open
The register protection mechanism of digital pipe driving chip, the sampled signal average value such as after filtration treatment is protected in scheduled time threshold value
Hold constant, then not to writing data in driving chip；When keeping constant state to exceed predetermined such as the signal after filtration treatment
Between threshold value, then driving chip is refreshed, re-write data.So be prevented from write error in register data and
Cause to show mistake.
Fig. 2 is the method flow diagram of the control numeral method of second embodiment of the invention.As shown in Fig. 2 methods described
Comprise the following steps：
Step 201：The data-signal that sensor is gathered is sampled using A/D modular converters；
In the present embodiment, A/D modular converters are deposited using 12 A/D converters inside singlechip chip by clock
Device overflows the mode of triggering, and A/D collection translation functions are started in timer interrupt service program, and 12 A/D converters can
Reach accurately sampling rate：
Wherein, sampling rate needs to consider the display speed of charactron, in addition it is also necessary to consider the frequency of noise, theory sampling speed
Rate needs to reach more than the twice of numeral method frequency, just can guarantee that distortionless recovering signal.
Step 202：Judge whether A/D samplings complete；When A/D samples to be completed, sampled signal is obtained by filtering process,
The sampled signal is sequentially placed into the first queue of default predetermined amount of storage using recursion mode, performs step 203；When
When A/D samplings are not completed, the sampled signal in the first queue with predetermined amount of storage keeps constant, performs step 203；
In the present embodiment, judge that A/D changes success or not in main program, the whole main program cycle time is more than sampling week
Phase.
After the completion of A/D samplings, preliminary sampling value filtering is carried out by simple limit filtration mode, removal pulse is done
Disturb, then filtering numerical value storage to numerical value buffering area.
A first queue for predetermined amount of storage is pre-defined, the queue is empty queue, by the sampled signal successively
Be put into queue, after first sampled signal is put into, sampled data be located at queue afterbody, queue due to not being occupied full,
Subsequent step is not carried out, and is to continue with being put into sampled signal toward queue the inside, after being put into second sampled signal, first
The sampled signal being put into can move one to Head-of-line, be always ensured that the last data being put into are located at the afterbody of queue, according to
Above-mentioned recursion mode takes in placing data into the queue up to queue is sampled signal.
Step 203：Judge whether first timer timing statisticses and the first filtering process time threshold meet predetermined condition；
As met, treatment is filtered to the first queue, recursion side will be used to the signal after the first queue filtering process
Formula is put into the second queue with predetermined amount of storage, performs step 204；Such as it is unsatisfactory for, described with predetermined amount of storage
Signal in two queues keeps constant, performs step 204；
The predetermined condition can be configured according to actual conditions, and in the present embodiment, predetermined condition is first timer
Timing statisticses and the first filtering process time threshold remainder result are 0（First timer timing statisticses % the first filtering process times
Threshold value==0）, corresponding step is performed according to judged result.
Treatment is filtered to the first queue to be included finding sampled signal in the first queue by sort algorithm
Minimum and maximum value, and be respectively placed in the head of the queue and tail of the queue of first queue；The minimum and maximum value in first queue is excluded, it is right
Other sampled signals in queue carry out being averaging computing；To be filtered what treatment was tried to achieve to first queue using recursion mode
Result is sequentially placed into the second queue of default predetermined amount of storage.
Strict limitation is not done to the sort algorithm, can be using Bubble Sort Algorithm, quick sorting algorithm etc..This
Bubble Sort Algorithm is used in embodiment, adjacent two sampled signals in queue are compared successively, small sampled signal is placed on
Head of the queue, big sampled signal is put behind, and the step is repeated, until can not again exchange.
A pre-defined queue for predetermined amount of storage is second queue, and the queue is empty queue, by described to first
Queue is filtered the result tried to achieve for the treatment of and is sequentially placed into second queue, and first is put into second queue to described first
Queue is filtered the signal tried to achieve for the treatment of, and the signal is located at the afterbody of second queue, second queue due to not being occupied full, no
Subsequent step can be performed, and is to continue with being put into sampled signal toward queue the inside, be put into second and the first queue is filtered
After the ripple signal tried to achieve for the treatment of, first signal being put into can move one to Head-of-line, be always ensured that last being put into
Data are located at the afterbody of second queue, are placed data into the queue according to above-mentioned recursion mode until queue is sampled signal
Take.
Step 204：Judge whether second timer timing statisticses and the second filtering process time threshold meet predetermined condition；
As met, treatment is filtered to the second queue；Such as it is unsatisfactory for, jumps out this and perform flow；
The predetermined condition can be configured according to actual conditions, and in the present embodiment, predetermined condition is second timer
Timing statisticses and the second filtering process time threshold remainder result are 0（Second timer timing statisticses % the second filtering process times
Threshold value==0）, corresponding step is performed according to judged result.
Being filtered treatment to the second queue includes, sampled signal in the second queue is found by sort algorithm
The minimum and maximum value of average value, and it is respectively placed in the head of the queue and tail of the queue of second queue；Exclude minimum in second queue and most
Other sampled signal average values in queue are carried out being averaging computing by big value；By to the result after second queue filtering process
Carry out numeral method.
Strict limitation is not done to the sort algorithm, can be using Bubble Sort Algorithm, quick sorting algorithm etc..This
Bubble Sort Algorithm is used in embodiment, adjacent two sampled signals in queue are compared successively, small sampled signal is placed on
Head of the queue, big sampled signal is put behind, and the step is repeated, until can not again exchange.
Wherein, the first filtering process time threshold and the second filtering process time threshold can be carried out according to actual conditions
Set.If the first filtering process time threshold and the second filtering process time threshold are identical, in first timer and first
When filtering process time threshold meets predetermined condition, recurrence average filtering process is carried out to first queue, at first queue filtering
After reason terminates, when second timer and the second filtering process time threshold meet predetermined condition, recursion is carried out to second queue and is put down
Equal filtering process, the result to second queue recurrence average filtering process is used as the signal write driver core after filtering process
Piece, drives numeral method, i.e. first queue and second queue are filtered according to identical frequency.
Because the attribute feature of driving chip itself, it is necessary to when digital die is driven, reduce and number as far as possible
The call duration time of pipe driving chip.Therefore, when the sampled signal average value after by filtration treatment writes to driving chip, open
The register protection mechanism of digital pipe driving chip, the sampled signal average value such as after filtration treatment is protected in scheduled time threshold value
Hold constant, then not to writing data in driving chip；When keeping constant state to exceed predetermined such as the signal after filtration treatment
Between threshold value, then driving chip is refreshed, re-write data.So be prevented from write error in register data and
Cause to show mistake.
Technical scheme, when carrying out second-order filter treatment by accurate signal acquisition, to gathering signal, showing
The display that the mode logarithmic code pipe of specially treated is carried out to signal is controlled, and the method is realized simply, at second-order filter
Reason, further increases the stability of numeral method, and the generation of error message is reduced to greatest extent.
One of ordinary skill in the art will appreciate that all or part of step in realizing above-described embodiment method can be
The hardware of correlation is instructed to complete by program, described program can be stored in a computer read/write memory medium,
Described storage medium, such as：ROM/RAM, magnetic disc, CD.
Above are only presently preferred embodiments of the present invention and institute's application technology principle, any technology people for being familiar with the art
In the technical scope of present disclosure, the change or replacement that can be readily occurred in should all be covered in protection scope of the present invention member
It is interior.
Claims (8)
1. it is a kind of control numeral method method, it is characterised in that including,
Obtain sampled signal；
Treatment is filtered to the sampled signal for obtaining using recurrence average filtering algorithm；
By the signal write driver chip after the filtering process, charactron is driven to be shown；
When wherein, by the signal write driver chip after the filtering process, such as the signal after filtering process is in scheduled time threshold
Keep constant in value, then not to writing data in driving chip；As the signal after filtering process keeps constant state to exceed in advance
Fixed time threshold, then refresh to driving chip, re-writes data.
2. it is according to claim 1 control numeral method method, it is characterised in that the step of the acquisition sampled signal
Suddenly include,
The data-signal that sensor is gathered is sampled using A/D modular converters；
When A/D samples to be completed, sampled signal is obtained by filtering process, put the sampled signal successively using recursion mode
In entering the first queue with predetermined amount of storage；
When A/D samplings are not completed, the sampled signal in the first queue with predetermined amount of storage keeps constant.
3. it is according to claim 2 control numeral method method, it is characterised in that the recurrence average filtering algorithm
Including,
Every the time of the first filtering process time threshold, in finding the first queue by sort algorithm, sampled signal is most
Small and maximum, and it is respectively placed in the head of the queue and tail of the queue of first queue；
The minimum and maximum value in first queue is excluded, other sampled signals in queue are carried out to be averaging computing, will be described
The result of computing acquisition is averaging to first queue as the signal after filtering process.
4. it is according to claim 3 control numeral method method, it is characterised in that the realization every first filtering
The time of process time threshold value includes that it is whole that timer timing statisticses carry out remainder result with the first filtering process time threshold
Number.
5. it is according to claim 2 control numeral method method, it is characterised in that the recurrence average filtering algorithm
Including,
Every the time of the first filtering process time threshold, in finding the first queue by sort algorithm, sampled signal is most
Small and maximum, and it is respectively placed in the head of the queue and tail of the queue of first queue；
The minimum and maximum value in first queue is excluded, other sampled signals in the queue is carried out being averaging computing, by institute
State first queue is averaging computing acquisition result be put into the second queue with predetermined amount of storage in recursion mode；
Every the time of the second filtering process time threshold, in finding the second queue by sort algorithm, sampled signal is most
Big and minimum value, and it is respectively placed in the head of the queue and tail of the queue of second queue；
The minimum and maximum value in second queue is excluded, other sampled signals in the second queue are carried out being averaging fortune
Calculate, using the result that computing acquisition is averaging to second queue as the signal after filtering process.
6. it is according to claim 5 control numeral method method, it is characterised in that the realization every first filtering
The time of process time threshold value includes that first timer timing statisticses carry out remainder result and are with the first filtering process time threshold
Integer；The realization includes that second timer timing statisticses and second are filtered every the time of the second filtering process time threshold
Process time threshold value carries out remainder result for integer.
7. it is according to claim 6 control numeral method method, it is characterised in that the first filtering process time
Threshold value is identical with the second filtering process time threshold.
8. the method for control numeral method according to claim 2, it is characterised in that the A/D modular converters are used
The A/D converter of 12.
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| CN2800231Y (en) * | 2005-04-29 | 2006-07-26 | 上海海事大学 | Circuit structure of intelligent meter with digital display |
| CN102305659B (en) * | 2011-07-28 | 2016-10-05 | 鲁东大学 | Continuous weight metering instrument and weight continuous metering method thereof |
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