CN204926765U - Automatic regulating electrical resistance's digital regulation resistance - Google Patents
Automatic regulating electrical resistance's digital regulation resistance Download PDFInfo
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- CN204926765U CN204926765U CN201520611934.9U CN201520611934U CN204926765U CN 204926765 U CN204926765 U CN 204926765U CN 201520611934 U CN201520611934 U CN 201520611934U CN 204926765 U CN204926765 U CN 204926765U
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- regulation resistance
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Abstract
The utility model discloses an automatic regulating electrical resistance's digital regulation resistance, it includes: singlechip, digital regulation resistance unit, press unit, reset unit and display element, wherein: the singlechip links to each other with digital regulation resistance, press unit, reset unit and display element respectively, furtherly, and reset circuit's output links to each other with the singlechip, press unit's output links to each other with the singlechip, display element's input links to each other with the singlechip, digital regulation resistance and singlechip both way junction. The utility model discloses an automatic regulating electrical resistance's digital regulation resistance can realize the automatically regulated to resistance, and convenient the regulation has reduced the error, has improved reliability of an item, has reduceed the cost.
Description
Technical field
The utility model relates to electronic technology field, particularly a kind of digital regulation resistance of self adjusting resistance.
Background technology
The increasing field of development along with China's science and technology needs to use potentiometer.Now a lot of industrial products or electronic product all can use potentiometer, and potentiometer is modal to be carried out trimming circuit and arrange voltage no more than being used for setting and adjusting resistance value and adjust gain etc.
Traditional potentiometer is mechanical potentiometer, carries out analog regulation resistance by screwdriver, and the mode regulated so easily exists error.Mechanical potentiometer volume is dumb greatly and cost is high, and this mode is eliminated gradually.
Utility model content
The utility model is for above-mentioned problems of the prior art, propose a kind of digital regulation resistance of self adjusting resistance, improve the reliability of product, reduce the cost, conveniently regulate and reduce error, solving traditional potentiometer volume large, regulate dumb, the problem that cost is high.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solution:
The utility model provides a kind of digital regulation resistance of self adjusting resistance, and it comprises: single-chip microcomputer, digital regulation resistance, push-button unit, reset unit and display unit; Wherein:
Described single-chip microcomputer is connected with described digital regulation resistance, push-button unit, reset unit and display unit respectively, further,
The output terminal of described reset circuit is connected with described single-chip microcomputer; The output terminal of described push-button unit is connected with described single-chip microcomputer; The input end of described display unit is connected with described single-chip microcomputer; Described digital regulation resistance and described single-chip microcomputer are bi-directionally connected.
Preferably, the model of described single-chip microcomputer is: STC89C51, it is a low-loss, high performance single-chip microcomputer, 8 dexterous bit CPUs and FLASH able to programme is had in chip, directly program is write in single-chip microcomputer by PC end, do not need to use extra programmable device to programme, faster and more convenient operation.
Preferably, described display unit is LED charactron, completing on the basis of Presentation Function, reduce further equipment cost.
Preferably, described display unit comprises: four common anode charactrons and Nixie tube drive circuit; Wherein: the input end of described four common anode charactrons is connected with described single-chip microcomputer respectively with the input end of described Nixie tube drive circuit, the output terminal of described Nixie tube drive circuit is connected with another input end of described four common anode pipe charactrons.
Preferably, also comprise crystal oscillator unit, the output terminal of described crystal oscillator unit is connected with described single-chip microcomputer.
Preferably, described push-button unit comprises the first button and the second button; Described first button is for increasing resistance value, and described second button is for reducing resistance value.
Whether preferably, also comprise check and correction unit, described check and correction unit is connected with described digital regulation resistance unit, consistent with the resistance that described display unit shows for the actual output resistance detecting digital regulation resistance unit; Like this can Timeliness coverage mistake, take appropriate measures.
Preferably, described check and correction unit is multimeter.
Compared to prior art, the utility model has the following advantages:
(1) digital regulation resistance of self adjusting resistance that provides of the utility model, can automatically adjust to the resistance value of digital regulation resistance, more flexibly, and regulating error is little;
(2) the utility model structure is simple, and cost is low.
Certainly, implement arbitrary product of the present utility model might not need to reach above-described all advantages simultaneously.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
Fig. 1 is the structural representation of the digital regulation resistance of the utility model embodiment 1;
Fig. 2 is the pinouts of the single-chip microcomputer of the utility model embodiment 1;
Fig. 3 is the pinouts of the digital regulation resistance unit of the utility model embodiment 1;
Fig. 4 is the circuit diagram of the digital regulation resistance unit of the utility model embodiment 1;
Fig. 5 is the structural representation of the digital regulation resistance of the utility model embodiment 2;
Fig. 6 is four common anode charactrons of the utility model embodiment 2 and the connecting circuit figure of Nixie tube drive circuit and single-chip microcomputer;
Fig. 7 is the circuit diagram of the reset unit of the utility model embodiment 2;
Fig. 8 is the circuit diagram of the crystal oscillator unit of the utility model embodiment 2;
Fig. 9 is the circuit diagram of the push-button unit of the digital regulation resistance of the utility model embodiment 2;
Figure 10 is the structural representation of the digital regulation resistance of the utility model embodiment 3.
Label declaration: 1-single-chip microcomputer, 2-digital regulation resistance unit, 3-push-button unit, 4-reset unit, 5-display unit, 6-crystal oscillator unit, 7-proofreads unit;
51-tetra-common anode charactrons, 52-Nixie tube drive circuit.
Embodiment
Below embodiment of the present utility model is elaborated; the present embodiment is implemented under premised on technical solutions of the utility model; give detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
embodiment 1:
Composition graphs 1, the present embodiment describes the digital regulation resistance of self adjusting resistance of the present utility model in detail, device comprises: single-chip microcomputer 1, digital regulation resistance unit 2, push-button unit 3, reset unit 4 and display unit 5, wherein: the output terminal of push-button unit 3 is connected with single-chip microcomputer 1, for arranging resistance, digital regulation resistance unit 2 and single-chip microcomputer 1 are bi-directionally connected, for receiving the resistance signal that single-chip microcomputer 1 sends, and it is processed, structural feedback will be processed to single-chip microcomputer 1, the input end of display unit 5 is connected with single-chip microcomputer 1, for receiving the resistance signal that single-chip microcomputer 1 sends, and it is shown, the output terminal of reset unit 4 is connected with single-chip microcomputer 1, for resetting to single-chip microcomputer 1, so that subsequent operation.
In the present embodiment, single-chip microcomputer adopts STC89C51 single-chip microcomputer, and its pinouts as shown in Figure 2.
As shown in Figure 3, its pin comprises the pinouts of numeral current potential unit 2:
(1) CS is that sheet selects input end, Low level effective;
(2) SCK is the synchronous clock of serial date transfer, and when DSR, the negative edge of SCK synchronously inputs data;
(3) SI is input serial data signal, and under the cooperation of SCK, SI inputs data to device;
(4) GND is with reference to ground;
(5) PAO is a stiff end of digital regulation resistance, sees PAO position in Fig. 3;
(6) PWO is the tap sliding end of digital regulation resistance, sees PWO position in Fig. 3;
(7) PBO is a stiff end of digital regulation resistance, PBO position in sketch 3;
(8) VCC is power input.
The P3.5 pin of single-chip microcomputer meets digital regulation resistance CS and holds, and SCK meets P3.6, and SI meets P3.7.When CS end is for low level, SCK is the synchronous clock of serial date transfer.When data are normal, carry out data input by the negative edge of SCK simultaneously.SI port and SCK synchronously carry out data input.Under the cooperation of SCK, SI inputs data to device.First write 16 bit data by single-chip microcomputer to digital regulation resistance, carry out resistance value by the control module of digital regulation resistance inside, 16 bit memories, slide switch and electric resistance array according to the corresponding tap of signal behavior of input again when digital regulation resistance receives these data.Data are all arranged to low level by CS and are then moved in 16 bit shift storeies, first 8 of this 16 bit data be moved into is command byte, latter 8 is data byte, data byte directly determines the tapped position of resistance array and namely determines output resistance, and digital regulation resistance always performs data byte after first fill order byte.Digital regulation resistance inside is latched containing 8 VR and is selected CS typing SPI serial-parallel shift register to upgrade by serial input data SI, clock SCK, sheet, and the circuit diagram of digital regulation resistance unit as shown in Figure 4.
embodiment 2:
The present embodiment is on the basis of embodiment 1, add crystal oscillator unit 6, simultaneously, the display unit 5 of the present embodiment adopts four common anode charactrons 51, the electric current produced due to single-chip microcomputer is less, enough electric currents cannot be provided to drive four common anode charactrons 51, therefore display unit 5 also comprises Nixie tube drive circuit 52, the structural representation of the digital regulation resistance of the present embodiment as shown in Figure 5, the input end of four common anode charactrons 51 is connected respectively at single-chip microcomputer 1 with the input end of Nixie tube drive circuit 52, the output terminal of Nixie tube drive circuit 52 is also connected with another input end of four common anode charactrons 51, show for driving four common anode charactrons 51.The connecting circuit figure of four common anode charactrons 51 and single-chip microcomputer 1 as shown in Figure 6.
In the present embodiment, Nixie tube drive circuit 52 adopts the normal form of triode and fixing electric series to be connected the display circuit of single-chip microcomputer 1 and four common anode charactrons 51, thus play the effect of Current amplifier, to make the brightness that charactron provides enough, its circuit diagram is as shown in Figure 7.
In the present embodiment, design crystal oscillator unit 6 is to provide basic clock signal to system, and this crystal oscillator unit 6 is the shared crystal oscillator of system, and ensure that each system can synchronously be carried out with this, the circuit diagram of crystal oscillator unit as shown in Figure 8.
Be illustrated in figure 9 total circuit diagram of the digital regulation resistance of the self adjusting resistance of the present embodiment, push-button unit 3 comprises two, be respectively the first button S1 and the second button S2, wherein: the first button S1 is for increasing the resistance value of setting, second button S2 is for reducing the resistance value set, first button S1 or the second button S2 often presses once, and display unit 5 all can show.
embodiment 3:
The present embodiment is on the basis of embodiment 2, add check and correction unit 7, it is connected with digital regulation resistance unit, for measuring the actual output resistance of digital regulation resistance unit, verify that whether it is consistent with the resistance shown by display unit 5, judge that whether the digital regulation resistance work of self adjusting resistance is normal, the structural representation of the present embodiment as shown in Figure 10.
In preferred embodiment, check and correction unit 7 can realize with multimeter.
Disclosed herein is only preferred embodiment of the present utility model, and this instructions is chosen and specifically described these embodiments, and being to explain principle of the present utility model and practical application better, is not to restriction of the present utility model.The modifications and variations that any those skilled in the art do within the scope of instructions, all should drop in scope that the utility model protects.
Claims (8)
1. a digital regulation resistance for self adjusting resistance, is characterized in that, comprising: single-chip microcomputer, digital regulation resistance unit, push-button unit, reset unit and display unit; Wherein:
Described single-chip microcomputer is connected with described digital regulation resistance unit, push-button unit, reset unit and display unit respectively, further;
The output terminal of described reset unit is connected with described single-chip microcomputer; The output terminal of described push-button unit is connected with described single-chip microcomputer; The input end of described display unit is connected with described single-chip microcomputer; Described digital regulation resistance unit and described single-chip microcomputer are bi-directionally connected.
2. digital regulation resistance according to claim 1, is characterized in that, the model of described single-chip microcomputer is: STC89C51.
3. digital regulation resistance according to claim 1, is characterized in that, described display unit is LED charactron.
4. digital regulation resistance according to claim 3, is characterized in that, described display unit comprises: four common anode charactrons and Nixie tube drive circuit; Wherein:
The input end of described four common anode charactrons is connected with described single-chip microcomputer respectively with the input end of described Nixie tube drive circuit, and the output terminal of described Nixie tube drive circuit is connected with another input end of described four common anode pipe charactrons.
5. digital regulation resistance according to claim 1, is characterized in that, also comprises crystal oscillator unit, and the output terminal of described crystal oscillator unit is connected with described single-chip microcomputer.
6. digital regulation resistance according to claim 1, is characterized in that, described push-button unit comprises the first button and the second button;
Described first button is for increasing resistance value, and described second button is for reducing resistance value.
7. digital regulation resistance according to claim 1, it is characterized in that, whether also comprise check and correction unit, described check and correction unit is connected with described digital regulation resistance unit, consistent with the resistance that described display unit shows for the actual output resistance detecting digital regulation resistance unit.
8. digital regulation resistance according to claim 7, is characterized in that, described check and correction unit is multimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520611934.9U CN204926765U (en) | 2015-08-14 | 2015-08-14 | Automatic regulating electrical resistance's digital regulation resistance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520611934.9U CN204926765U (en) | 2015-08-14 | 2015-08-14 | Automatic regulating electrical resistance's digital regulation resistance |
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| CN204926765U true CN204926765U (en) | 2015-12-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379528A (en) * | 2019-08-01 | 2019-10-25 | 岭澳核电有限公司 | Display and control device applied to nuclear power station dish platform system |
| CN115495298A (en) * | 2022-11-08 | 2022-12-20 | 北京紫光芯能科技有限公司 | Method and device for testing IO driving capability |
-
2015
- 2015-08-14 CN CN201520611934.9U patent/CN204926765U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379528A (en) * | 2019-08-01 | 2019-10-25 | 岭澳核电有限公司 | Display and control device applied to nuclear power station dish platform system |
| CN115495298A (en) * | 2022-11-08 | 2022-12-20 | 北京紫光芯能科技有限公司 | Method and device for testing IO driving capability |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160926 Address after: 201406 Shanghai city Fengxian District light industrial park along the road No. 415 A3 Building 1 room 1057 Patentee after: Shanghai Rui Rui Automation Technology Co., Ltd. Address before: 215009, No. 287, Xuefu Road, Suzhou, Jiangsu, Suzhou Patentee before: Suzhou Institute of Trade & Commerce |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20170814 |