CN102456308A - Driving circuit of optoelectronic equipment and driving method thereof - Google Patents
Driving circuit of optoelectronic equipment and driving method thereof Download PDFInfo
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- CN102456308A CN102456308A CN2010105306284A CN201010530628A CN102456308A CN 102456308 A CN102456308 A CN 102456308A CN 2010105306284 A CN2010105306284 A CN 2010105306284A CN 201010530628 A CN201010530628 A CN 201010530628A CN 102456308 A CN102456308 A CN 102456308A
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Abstract
The invention is suitable for the technical field of electronics and provides a driving circuit of optoelectronic equipment and a driving method thereof. The driving circuit comprises a first series-to-parallel conversion chip and a second series-to-parallel conversion chip, wherein the first series-to-parallel conversion chip is connected with a singlechip through a three-wire bus and is used for converting serial data output by the singlechip into parallel data and outputting the parallel data to the section control end of the optoelectronic equipment; and the second series-to-parallel conversion chip is used for converting the serial data spilled by the first series-to-parallel conversion chip into the parallel data and outputting the parallel data after the conversion to the position gate end of the optoelectronic equipment to control the data of the display section of the optoelectronic equipment. According to the invention, multiple series-to-parallel conversion chips are connected between the singlechip and a digital tube, and the serial-in-parallel-out conversion of data is completed through the series-to-parallel conversion chips, thereby achieving the control of the driving optoelectronic equipment by only using the three-end bus, reducing the occupancy rate of the I/O (input/output) port of the singlechip so that more control tasks can be completed at the limited I/O port of the singlechip, simplifying a circuit and improving the reliability of the circuit.
Description
Technical field
The invention belongs to electronic technology field, relate in particular to a kind of driving circuit and drive controlling method thereof of optoelectronic device.
Background technology
At present, according to the difference of the connected mode of optoelectronic devices such as LED lamp, charactron, the optoelectronic device type of drive is divided into two kinds of static drive and dynamic driving; So-called static drive is meant that each segment encode of each optoelectronic device is all driven by the I/O port of a single-chip microcomputer; It is very many that this kind mode takies the single-chip processor i/o port, and hardware circuit is realized complicated, therefore many at present with optoelectronic devices such as dynamic driving mode driving LED lamp, charactrons; So-called dynamic driving mode is meant selects end of the same name to connect together the section of all optoelectronic devices; And be that the public pole COM of each optoelectronic device increases a position gate control circuit, the position gating is by I/O line traffic control independently separately, when single-chip microcomputer deferent segment signal; All optoelectronic devices all receive identical segment signal, but the optoelectronic device that has only Single-chip Controlling position gating end COM to open can show.COM through each charactron of time sharing wheel current control holds again; Just make each charactron take turns controlled demonstration; The time of lighting of bits per inch sign indicating number pipe is 1～2ms; Because people's the persistence of vision phenomenon and the afterglow effect of light emitting diode, what people saw still is one group of stable video data, and power consumption is lower.
Fig. 1 shows the dynamic driver circuit of existing optoelectronic device; Wherein connect eight of the same name section control end A to DP that show stroke of six charactrons respectively through eight bit data bus P2.0 to P2.7, and connect the position gating end 1 to 6 of six charactrons respectively through six bit data bus P3.0 to P3.5 by single-chip microcomputer.When the data bus deferent segment signal of single-chip microcomputer, all charactrons all receive identical segment signal, but the charactron that has only Single-chip Controlling position gating end COM to open can show font.
Though the relative static drive mode of this dynamic driving mode takies less single-chip processor i/o port; But when driving more optoelectronic device; Still can't reduce the taking of single-chip processor i/o port, make the limited I/O port of single-chip microcomputer can't accomplish the more control task.
Summary of the invention
The object of the present invention is to provide a kind of driving circuit of optoelectronic device, be intended to solve the occupancy of reduction, simplify circuit, improve the reliability of circuit the single-chip processor i/o port.
The present invention is achieved in that a kind of driving circuit of optoelectronic device, and said driving circuit comprises:
First string and the conversion chip; Said first string and conversion chip are connected with single-chip microcomputer with control line through clock line, data line; Serial data DIN with said single-chip microcomputer output; When clock signal clk is effective, convert parallel data into, and when said control line receives control signal OE, the parallel section control end that outputs to optoelectronic device; And
Second string and the conversion chip; Said second string and conversion chip are connected with said single-chip microcomputer with control line through clock line, and through data line and said first string overflowing to hold and be connected of conversion chip also, go here and there the serial data DIN that conversion chip also overflows with said first; When clock signal clk is effective, convert parallel data into; And when said control line receives control signal OE, the parallel position gating end that outputs to optoelectronic device, control optoelectronic device display segment data.
Another object of the present invention is to provide a kind of driving governor of optoelectronic device, the driving governor of said optoelectronic device comprises the driving circuit of single-chip microcomputer and described optoelectronic device.
Another object of the present invention is to provide a kind of drive controlling method of optoelectronic device; Said optoelectronic device comprises a plurality of photovoltaic elements; Said method comprises the step of a plurality of photovoltaic elements of the said optoelectronic device of drive controlling successively, and the step of a photovoltaic element of the said optoelectronic device of drive controlling is specific as follows:
Single-chip microcomputer sends serial data to first string and the conversion chip;
The serial data that first string and conversion chip will overflow sends to second string and the conversion chip;
Single-chip microcomputer tranmitting data register signal and control signal are to first string and the conversion chip and second string and the conversion chip;
First string and conversion chip and second string and conversion chip convert serial data into parallel data when receiving the efficient clock signal;
First string and conversion chip send to parallel data the section control end of a photovoltaic element of optoelectronic device when receiving effective control signal;
Second string and conversion chip send to parallel data at the position gating end of a photovoltaic element of optoelectronic device when receiving effective control signal.
The present invention increases by two strings and conversion chip between single-chip microcomputer and charactron; Wherein first string and conversion chip serial data that single-chip microcomputer is sent convert the segment data of parallel data as charactron into; Second string and conversion chip are used for controlling the position gating end of charactron, show its segment data.The serial data that the present invention utilizes two strings and conversion chip that single-chip microcomputer is exported converts parallel data into; Only utilize three end buses to realize the driving of optoelectronic device; Reduced the occupancy of single-chip processor i/o port; Make the limited I/O port of single-chip microcomputer can accomplish the more control task, and simplified circuit, improved the reliability of circuit.
Description of drawings
Fig. 1 is the driving circuit figure of the charactron that provides of prior art;
Fig. 2 is the driving circuit figure of six charactrons providing of first embodiment of the invention;
Fig. 3 is the driving circuit figure of 12 charactrons providing of second embodiment of the invention;
Fig. 4 is the drive controlling method flow diagram of the charactron that provides of third embodiment of the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The present invention is connected a plurality of strings and conversion chip between single-chip microcomputer and the charactron, accomplishes the conversion that data are sealed in and go out through string and conversion chip, has realized only using three end bus controlling and driving optoelectronic devices.
The driving circuit figure of six charactrons that Fig. 2 provides for first embodiment of the invention for the ease of explanation, only shows the part relevant with the present invention.
In the present embodiment; The driving circuit of optoelectronic device comprises: first string and the conversion chip (being U1), and said U1 can adopt 8 bit shift register 74LS595 or the 74HC595 that deposit function with lock, and the shift register clock input end SH_CP of U1 is connected with single-chip microcomputer through clock line; Input clock signal CLK; The storage register input end of clock ST_CP of U1 is connected with single-chip microcomputer through control line, input control signal OE, and the serial data input end DS of U1 is connected with single-chip microcomputer through data line; Serial data DIN with single-chip microcomputer output; When the clock pulse signal rising edge, convert parallel data into, and when control signal OE imports, export eight section control end B0 to B7 of six charactrons respectively to by the eight bit parallel output terminal Q0 to Q7 of U1; And
Second string and the conversion chip (being U2); Said U2 also can adopt 8 bit shift register 74LS595 or the 74HC595 that deposit function with lock, and the shift register clock input end SH_CP of U2 is connected input clock signal CLK through clock line with single-chip microcomputer; The storage register input end of clock ST_CP of U2 is connected with single-chip microcomputer through control line; Input control signal OE, the serial data input end DS of U2 is connected through the end Q7 ' that overflows of data line and U1, the serial data that U1 is overflowed; When clock pulse signal CLK rising edge is effective, convert parallel data into; And when receiving control signal OE, the position gating end A0 to A5 by the six bit parallel output terminal Q0 to Q5 of U2 output to six charactrons controls charactron and shows font.
In embodiments of the present invention; Single-chip microcomputer is through total line traffic control first string of three ends and conversion chip and second is gone here and there and conversion chip is converted into parallel data with serial data; The controlling and driving charactron shows; And, realize the dynamic driving of logarithmic code pipe by second string and the COM end of conversion chip through each charactron of time sharing wheel current control.
As one embodiment of the present of invention, can also be through increasing the quantity that the 3rd string and conversion chip (being U3) come optoelectronic devices such as external drive charactron.
The driving circuit figure of 12 charactrons that Fig. 3 provides for second embodiment of the invention is elaborated to realization of the present invention below in conjunction with specific embodiment.
In embodiments of the present invention, adopt three strings and conversion chip to drive 12 charactrons, wherein the connected mode of U1 repeats no more; The eight bit parallel output terminal Q0 to Q7 of U2 output to the position gating end A0 to A7 of eight charactrons; The shift register clock input end SH_CP of U3 is connected with single-chip microcomputer through clock line, input clock signal CLK, and the storage register input end of clock ST_CP of U3 is connected with single-chip microcomputer through control line; Input control signal OE; The serial data input end DS of U3 is connected with the end Q7 ' that overflows of U2 through data line, and the serial data with U2 overflows converts parallel data into when clock pulse signal CLK rising edge is effective; And when receiving control signal OE; As the position gating end of expansion, the position gating end A8 to A11 by the parallel output terminal H0 to H3 of U3 outputs to charactron selects charactron to show font by U1 and U2 control.
As one embodiment of the present invention; U3 also can adopt 8 bit shift register 74LS595 or the 74HC595 that deposit function with lock; Can also increase some the 3rd string and conversion chips; And then the quantity of external drive optoelectronic device, one the 3rd string of every increase and conversion chip can increase by eight charactrons of driving.
Fig. 4 shows the realization flow of the drive controlling method of the charactron that third embodiment of the invention provides; This method comprises the step of a plurality of photovoltaic elements of the said optoelectronic device of drive controlling successively, and the step of a photovoltaic element of the said optoelectronic device of drive controlling is specific as follows:
In step S401, single-chip microcomputer sends serial data to first string and the conversion chip;
In step S402, the serial data that first string and conversion chip will overflow sends to second string and the conversion chip;
In step S403, single-chip microcomputer tranmitting data register signal and control signal are to first string and the conversion chip and second string and the conversion chip;
In step S404, first string and conversion chip and second string and conversion chip convert serial data into parallel data when receiving the efficient clock signal;
In step S405, first string and conversion chip send to parallel data the section control end of a photovoltaic element of optoelectronic device when receiving effective control signal;
In step S406, second string and conversion chip send to parallel data at the position gating end of a photovoltaic element of optoelectronic device when receiving effective control signal.
As one embodiment of the present invention, this method also comprises the steps: second string and the conversion chip serial data of overflowing are sent to the 3rd string and conversion chip behind step S402;
Comprise the steps: also that behind step S403 single-chip microcomputer tranmitting data register signal and control signal are to the 3rd string and conversion chip; The 3rd string and conversion chip convert serial data into parallel data when receiving the efficient clock signal;
Behind step S406, also comprise the steps: the 3rd string and conversion chip when receiving effective control signal, parallel data is sent to the position gating end of optoelectronic device.
As a preferred embodiment of the present invention, first string and conversion chip, second string and conversion chip and the 3rd string and conversion chip all can adopt 8 bit shift register 74LS595 or 74HC595.
The present invention utilizes string and conversion chip to convert the serial data of single-chip microcomputer output into parallel data, only utilizes three end buses to realize the driving of optoelectronic device, has reduced the occupancy of single-chip processor i/o port, has simplified circuit, has improved the reliability of circuit.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the driving circuit of an optoelectronic device is characterized in that, said driving circuit comprises:
First string and the conversion chip; Said first string and conversion chip are connected with single-chip microcomputer with control line through clock line, data line; Serial data DIN with said single-chip microcomputer output; When clock signal clk is effective, convert parallel data into, and when said control line receives control signal OE, the parallel section control end that outputs to optoelectronic device; And
Second string and the conversion chip; Said second string and conversion chip are connected with said single-chip microcomputer with control line through clock line, and through data line and said first string overflowing to hold and be connected of conversion chip also, go here and there the serial data DIN that conversion chip also overflows with said first; When clock signal clk is effective, convert parallel data into; And when said control line receives control signal OE, the parallel position gating end that outputs to optoelectronic device, control optoelectronic device display segment data.
2. driving circuit as claimed in claim 1 is characterized in that, said driving circuit also comprises:
The 3rd string and conversion chip; Said the 3rd string and conversion chip are connected with said single-chip microcomputer with control line through clock line, and the data line of said the 3rd string and conversion chip and said second string be the overflowing to hold and be connected of conversion chip also, go here and there the serial data that conversion chip also overflows with said second; When clock signal is effective, convert parallel data into; And when said control line receives control signal, the parallel position gating end that outputs to optoelectronic device, control optoelectronic device display segment data.
3. driving circuit as claimed in claim 1 is characterized in that, said first string and conversion chip and second string and conversion chip are 8 bit shift register with latch function.
4. driving circuit as claimed in claim 1 is characterized in that, said first string and conversion chip and second string and conversion chip are 74LS595 chip or 74HC595 chip.
5. driving circuit as claimed in claim 2 is characterized in that, said the 3rd string and conversion chip are 8 bit shift register with latch function.
6. the driving governor of an optoelectronic device is characterized in that, the driving governor of said optoelectronic device comprises single-chip microcomputer and like the driving circuit of each described optoelectronic device of claim 1 to 5.
7. the drive controlling method of an optoelectronic device; Said optoelectronic device comprises a plurality of photovoltaic elements; It is characterized in that said method comprises the step of a plurality of photovoltaic elements of the said optoelectronic device of drive controlling successively, the step of a photovoltaic element of the said optoelectronic device of drive controlling is specific as follows:
Single-chip microcomputer sends serial data to first string and the conversion chip;
The serial data that first string and conversion chip will overflow sends to second string and the conversion chip;
Single-chip microcomputer tranmitting data register signal and control signal are to first string and the conversion chip and second string and the conversion chip;
First string and conversion chip and second string and conversion chip convert serial data into parallel data when receiving the efficient clock signal;
First string and conversion chip send to parallel data the section control end of a photovoltaic element of optoelectronic device when receiving effective control signal;
Second string and conversion chip send to parallel data at the position gating end of a photovoltaic element of optoelectronic device when receiving effective control signal.
8. method as claimed in claim 7; It is characterized in that said first string and the serial data that will overflow of conversion chip send to the serial data that also comprises the steps: after the step of second string and conversion chip second string and conversion chip overflow and send to the 3rd string and conversion chip;
Said single-chip microcomputer tranmitting data register signal and control signal are gone here and there to first and the step of conversion chip and second string and conversion chip also comprises the steps: that single-chip microcomputer tranmitting data register signal and control signal are to the 3rd string and conversion chip afterwards; The 3rd string and conversion chip convert serial data into parallel data when receiving the efficient clock signal;
Said second string and conversion chip are when receiving effective control signal; Also comprise the steps: the 3rd string and conversion chip when receiving effective control signal after parallel data being sent to the step of position gating end of a photovoltaic element of optoelectronic device, parallel data is sent to the position gating end of optoelectronic device.
9. method as claimed in claim 7 is characterized in that, said first string and conversion chip and second string and conversion chip are 8 bit shift register with latch function.
10. method as claimed in claim 8 is characterized in that, said the 3rd string and conversion chip are 8 bit shift register with latch function.
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| CN2010105306284A CN102456308A (en) | 2010-11-03 | 2010-11-03 | Driving circuit of optoelectronic equipment and driving method thereof |
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| CN2010105306284A CN102456308A (en) | 2010-11-03 | 2010-11-03 | Driving circuit of optoelectronic equipment and driving method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102800271A (en) * | 2012-08-15 | 2012-11-28 | 无锡华润矽科微电子有限公司 | Control method for multi-digit LED nixie tubes |
| CN103531141A (en) * | 2013-10-16 | 2014-01-22 | 华为技术有限公司 | Digital tube driving circuit and control method of digital tube driving circuit |
| CN104156337A (en) * | 2014-08-20 | 2014-11-19 | 中国科学院上海高等研究院 | Selection circuit for peripheral elements |
| CN104461319A (en) * | 2014-11-28 | 2015-03-25 | 卧龙电气集团股份有限公司 | Extendable minimum connection wire scanning type interactive system for dehumidifier |
| CN105161041A (en) * | 2015-08-28 | 2015-12-16 | 深圳市汇星数字技术有限公司 | Bit-expandable *-shaped nixie tube driving system and digital video parsing system |
| CN105597124A (en) * | 2015-12-29 | 2016-05-25 | 杨旭平 | Infection prevention purification type breath intelligent nursing device |
| CN106297618A (en) * | 2015-06-08 | 2017-01-04 | 无锡晶哲科技有限公司 | A kind of algorithm reducing seven segment digital tubes operating power consumption |
| CN110444137A (en) * | 2019-08-15 | 2019-11-12 | 重庆川仪速达机电有限公司 | A kind of multidigit nixie tube display driver circuit and its control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102800271A (en) * | 2012-08-15 | 2012-11-28 | 无锡华润矽科微电子有限公司 | Control method for multi-digit LED nixie tubes |
| CN102800271B (en) * | 2012-08-15 | 2015-07-01 | 无锡华润矽科微电子有限公司 | Control method for multi-digit LED nixie tubes |
| CN103531141B (en) * | 2013-10-16 | 2017-03-15 | 华为技术有限公司 | A kind of Nixie tube drive circuit and its control method |
| CN103531141A (en) * | 2013-10-16 | 2014-01-22 | 华为技术有限公司 | Digital tube driving circuit and control method of digital tube driving circuit |
| WO2015055009A1 (en) * | 2013-10-16 | 2015-04-23 | 华为技术有限公司 | Digital tube driving circuit and control method thereof |
| CN104156337A (en) * | 2014-08-20 | 2014-11-19 | 中国科学院上海高等研究院 | Selection circuit for peripheral elements |
| CN104156337B (en) * | 2014-08-20 | 2017-08-15 | 中国科学院上海高等研究院 | A kind of selection circuit of peripheral cell |
| CN104461319A (en) * | 2014-11-28 | 2015-03-25 | 卧龙电气集团股份有限公司 | Extendable minimum connection wire scanning type interactive system for dehumidifier |
| CN104461319B (en) * | 2014-11-28 | 2018-05-22 | 卧龙电气集团股份有限公司 | A kind of expansible minimum line scan-type interactive system of dehumidifier |
| CN106297618A (en) * | 2015-06-08 | 2017-01-04 | 无锡晶哲科技有限公司 | A kind of algorithm reducing seven segment digital tubes operating power consumption |
| CN105161041A (en) * | 2015-08-28 | 2015-12-16 | 深圳市汇星数字技术有限公司 | Bit-expandable *-shaped nixie tube driving system and digital video parsing system |
| CN105597124A (en) * | 2015-12-29 | 2016-05-25 | 杨旭平 | Infection prevention purification type breath intelligent nursing device |
| CN110444137A (en) * | 2019-08-15 | 2019-11-12 | 重庆川仪速达机电有限公司 | A kind of multidigit nixie tube display driver circuit and its control method |
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Application publication date: 20120516 |