CN103151128A - Regulating rheostat circuit with precise figures - Google Patents
Regulating rheostat circuit with precise figures Download PDFInfo
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- CN103151128A CN103151128A CN2013100997326A CN201310099732A CN103151128A CN 103151128 A CN103151128 A CN 103151128A CN 2013100997326 A CN2013100997326 A CN 2013100997326A CN 201310099732 A CN201310099732 A CN 201310099732A CN 103151128 A CN103151128 A CN 103151128A
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Abstract
The invention discloses a regulating rheostat circuit with precise figures. In the prior art, continuous and variable resistance values can not be obtained, manual regulation is needed and resistance values which enter to circuits can not be precisely controlled. According to the regulating rheostat circuit disclosed by the invention, one end of a to-be-regulated resistor r is connected with a d pole of a power switch Q and an output port; the other end of the to-be-regulated resistor r is connected with an s pole of the power switch Q and the output port; an optical isolation unit transmits a trigger signal to the power switch Q; a singlechip control unit transmits a pulse-width modulation (PWM) signal to the optical isolation unit; the singlechip control unit transmits a display signal to a five-digit digital display unit; a keyboard input unit transmits an input signal to the singlechip control unit; the serial port input unit transmits an input signal to the singlechip control unit; and a power source input unit transmits power supply to the singlechip control unit. The regulating rheostat circuit disclosed by the invention not only can prolong the service life of rheostats, but also can improve the precision controllability of resistance which enters to circuits.
Description
Technical field
The invention belongs to automation, electrical control and field of electronic design, be specifically related to a kind of precise figures standardsizing rheostat circuit.
Background technology
Rheostat has very important effect as adjustable resistor in current automation, electrical control and field of electronic design.Usually rheostat can be divided into slide rheostat, resistance box and potentiometer.Slide rheostat is coiled into coil by resistance wire, changes by the slip slide plate resistance wire length that serial connection enters circuit, thereby changes resistance.Slide rheostat exists mechanical friction and contact resistance because the moving contact part is arranged, and this just causes slide resistor can not be applied to the occasion that frequently changes resistance and need to accurately know the access resistance.Resistance box be a kind of can regulating resistance size and can demonstrate the rheostat of resistance, it and slide rheostat comparison, slide rheostat can not be expressed the resistance of place in circuit, but it can continuously change the resistance in place in circuit.Resistance box can be expressed the resistance size that is connected in circuit, but change in resistance is discontinuous, and has equally the moving contact part with slide rheostat.Potentiometer normally is comprised of resistive element and rotation or sliding system, namely moves on resistive element by a moving contact, obtains part resistance.Potentiometer is similar to slide rheostat, also has same contact, and can't know the size of the resistance value of place in circuit.
In current automation, electric controller and field of electronic design, people usually need accurate adjustable resistance, yet there are several fatal shortcomings in current rheostat: 1) have moving contact, be difficult to meet the needs of the occasion of frequent regulating resistance, useful life is limited; 2) can't obtain the resistance value of continuous variable; 3) all need manual adjustments, be difficult to be adapted to the occasion that automatic resistance is regulated; 4) can't accurately control the resistance value of place in circuit; 5) must for the resistance of certain type, can't realize continuous adjusting for the resistance of a lot of other types.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, proposed a kind of precise figures standardsizing rheostat circuit.
A kind of precise figures standardsizing rheostat of the present invention circuit comprises that resistance r to be transferred, power switch device Q, light are every unit, Single-chip Controlling unit, power input unit, group of four figures display unit, keyboard input unit and serial ports input unit;
The end of described resistance r to be transferred is connected with the d utmost point of power switch device Q and connects output port, and the other end is connected with the s utmost point of power switch device Q and connects output port, and light is sent into triggering signal every the unit to power switch device Q spare; The Single-chip Controlling unit is sent into pwm signal to light every the unit; Display is sent into to five-digit number code display unit in the Single-chip Controlling unit; The keyboard input unit is sent into input signal to the Single-chip Controlling unit; The serial ports input unit is sent into input signal to the Single-chip Controlling unit; Power input unit is sent into power supply to the Single-chip Controlling unit;
Described Single-chip Controlling unit comprises single-chip microcomputer U1, switch S, the first resistance R 1, the first matching capacitance C1, the second matching capacitance C2, the 3rd matching capacitance C3 and crystal oscillator X1;
The end of 9 pin of described single-chip microcomputer U1 and the 3rd matching capacitance C3, an end of switch S and the end of resistance R 1 of being connected are connected, and the other end of the 3rd matching capacitance C3 is connected with the other end of switch S and meets VCC, the other end ground connection of the first resistance R 1; The 20 pin ground connection of single-chip microcomputer U1,18 pin are connected with the end of crystal oscillator X1, the end of the second matching capacitance C2,19 pin are connected with the other end of crystal oscillator X1, the end of the first matching capacitance C1, and the other end of the first matching capacitance C1 is connected with the other end of the second matching capacitance C2 and ground connection; 40 pin of single-chip microcomputer U1 meet VCC; Described single-chip microcomputer U1 model is AT89C51;
Described keyboard input unit comprises the 14 resistance R 14, the 15 resistance R 15, the 16 resistance R 16, the first K switch 1, second switch K2 and the 3rd K switch 3;
One end of described the 14 resistance R 14 is connected with an end of 32 pin of single-chip microcomputer U1, the 3rd K switch 3, one end of the 15 resistance R 15 is connected with the end of 33 pin of single-chip microcomputer U1, second switch K2, one end of the 16 resistance R 16 is connected with an end of 34 pin of single-chip microcomputer U1, the first K switch 1, another termination VCC of the 14 resistance R 14, the 15 resistance R 15 and the 16 resistance R 16, the other end ground connection of the first K switch 1, second switch K2 and the 3rd K switch 3;
Described group of four figures display unit comprises LED digital display tube U2, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R 10, the 11 resistance R 11, the 12 resistance R 12, the 13 resistance R 13, the first transistor Q1, transistor seconds Q2, the 3rd transistor Q3 and the 4th transistor Q4;
one end of described the second resistance R 2 is connected with 39 pin of single-chip microcomputer U1, the other end of the second resistance R 2 is connected with the base stage of the first transistor Q1, the collector electrode of the first transistor Q1 is connected with the S1 pin of LED digital display tube U2, one end of the 3rd resistance R 3 is connected with 38 pin of single-chip microcomputer U1, the other end of the 3rd resistance R 3 is connected with the base stage of transistor seconds Q2, the collector electrode of transistor seconds Q2 is connected with the S2 pin of LED digital display tube U2, one end of the 4th resistance R 4 is connected with 37 pin of single-chip microcomputer U1, the other end of the 4th resistance R 4 is connected with the base stage of the 3rd transistor Q3, the collector electrode of the 3rd transistor Q3 is connected with the S3 pin of LED digital display tube U2, one end of the 5th resistance R 5 is connected with 36 pin of single-chip microcomputer U1, the other end of the 5th resistance R 5 is connected with the base stage of the 4th transistor Q4, the collector electrode of the 4th transistor Q4 is connected with the S4 pin of LED digital display tube U2, the first transistor Q1, transistor seconds Q2, the emitter of the 3rd transistor Q3 and the 4th transistor Q4 meets VCC, LED digital display tube U2 a, b, c, d, e, f, g and DP pin and an end of the 6th resistance R 6, an end of the 7th resistance R 7, an end of the 8th resistance R 8, an end of the 9th resistance R 9, an end of the tenth resistance R 10, an end of the 11 resistance R 11, an end of the 12 resistance R 12 and an end of the 13 resistance R 13 connect one to one, the other end of the other end of the other end of the other end of the other end of the other end of the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R 10, the other end of the 11 resistance R 11, the 12 resistance R 12 and the other end of the 13 resistance R 13 connect one to one with 1,2,3,4,5,6,7,8 pin of single-chip microcomputer U1 respectively, 21,22,23,24,25,26,27,28 pin of single-chip microcomputer U1 and 1,2,3,4,5,6,7,8 pin of single-chip microcomputer U1 connect one to one,
Described light comprises the 14 resistance R 14, the 15 resistance R 15, the 4th matching capacitance C9, load capacitance CL and optocoupler components U4 every the unit; 1 pin of described optocoupler components U4 is connected with 4 pin, 2 pin are connected with an end of the 14 resistance R 14,3 pin ground connection, 5 pin are connected with the end of the 4th matching capacitance C9 and ground connection, one end of 6 pin and the 15 resistance R 15, the end of load capacitance CL also are connected with the g utmost point of power switch device Q, the other end of 7 pin, 8 pin and the 4th matching capacitance C9, the other end of the 15 resistance R 15 are connected and meet VCC, the other end of the 14 resistance R 14 is connected with 35 pin of single-chip microcomputer U1, and the other end of load capacitance CL is connected with the s utmost point of power switch device Q and ground connection;
Described serial ports input unit comprises the first polar capacitor C4, the second polar capacitor C5, the 3rd polar capacitor C6, quadripolarity capacitor C 7, the 5th polar capacitor C8, level transferring chip U3 and serial line interface J1;
1 pin of described level transferring chip U3 is connected with the positive pole of the first polar capacitor C4, 3 pin are connected with the negative pole of the first polar capacitor C4, 4 pin are connected with the positive pole of the second polar capacitor C5, 5 pin are connected with the negative pole of the second polar capacitor C5, 11 pin are connected with 11 pin of single-chip microcomputer U1, 7 pin, 8 pin, 9 pin, 10 foot rests are empty, 12 pin are connected with 10 pin of single-chip microcomputer U1, 2 pin are connected with the positive pole of the 3rd polar capacitor C6, the negative pole of 16 pin and the 3rd polar capacitor C6, the positive pole of the 5th polar capacitor C8 connects and connects+the 5V power supply, 6 pin are connected with the negative pole of quadripolarity capacitor C 7, 13 pin are connected with 3 pin of serial line interface J1, 14 pin are connected with 2 pin of serial line interface J1, 15 pin ground connection, the minus earth of the 5th polar capacitor C8, the plus earth of quadripolarity capacitor C 7, 1 pin of serial line interface J1, 4 pin, 5 pin, 6 pin, 7 pin, 8 pin, 9 pin, 10 pin and 11 foot rests are empty.
The relative prior art of this reality invention has the following advantages: saved rheostatic mechanical contact, can improve the life-span that rheostat uses, eliminated because long-term friction causes the variation of contact resistance.This method for designing can be carried out for all types of resistance accurately adjustablely in addition, has overcome the situation of current restriction adjustable resistance type fully.Because the method for single-chip microcomputer pulse-width modulation that adopts this rheostat realizes the adjusting of rheostat resistance, so this control method not only can improve rheostatic useful life, improves simultaneously the exact controllability of place in circuit resistance.The resistance value that the keyboard input unit set to need obtains, can obtain to be accurate to ten thousand within 0.00-100.0%/ precision.The set point of resistance can seal in by serial port input unit online modification the resistance of circuit simultaneously, and shows the resistance of current place in circuit by group of four figures display unit.
Description of drawings
Fig. 1 is system block diagram of the present invention;
Fig. 2 is Single-chip Controlling element circuit figure of the present invention;
Fig. 3 is keyboard input-cell circuitry figure of the present invention;
Fig. 4 is group of four figures display unit circuit figure of the present invention;
Fig. 5 is that light of the present invention is every element circuit figure;
Fig. 6 is serial ports input-cell circuitry figure of the present invention.
Embodiment
Further illustrate the present invention below in conjunction with accompanying drawing
As shown in Figure 1, a kind of precise figures standardsizing rheostat of the present invention circuit comprises that resistance r to be transferred, power switch device Q, light are every unit, Single-chip Controlling unit, power input unit, group of four figures display unit, keyboard input unit and serial ports input unit;
The end of described resistance r to be transferred is connected with the d utmost point of power switch device Q and connects output port, and the other end is connected with the s utmost point of power switch device Q and connects output port, and light is sent into triggering signal every the unit to power switch device Q; The Single-chip Controlling unit is sent into pwm signal to light every the unit; Display is sent into to five-digit number code display unit in the Single-chip Controlling unit; The keyboard input unit is sent into input signal to the Single-chip Controlling unit; The serial ports input unit is sent into input signal to the Single-chip Controlling unit; Power input unit is sent into power supply to the Single-chip Controlling unit;
As shown in Figure 2, described Single-chip Controlling unit comprises single-chip microcomputer U1, switch S, the first resistance R 1, the first matching capacitance C1, the second matching capacitance C2, the 3rd matching capacitance C3 and crystal oscillator X1;
The end of 9 pin of described single-chip microcomputer U1 and the 3rd matching capacitance C3, an end of switch S and the end of resistance R 1 of being connected are connected, and the other end of the 3rd matching capacitance C3 is connected with the other end of switch S and meets VCC, the other end ground connection of the first resistance R 1; The 20 pin ground connection of single-chip microcomputer U1,18 pin are connected with the end of crystal oscillator X1, the end of the second matching capacitance C2,19 pin are connected with the other end of crystal oscillator X1, the end of the first matching capacitance C1, and the other end of the first matching capacitance C1 is connected with the other end of the second matching capacitance C2 and ground connection; 40 pin of single-chip microcomputer U1 meet VCC; Described single-chip microcomputer U1 model is AT89C51;
As shown in Figure 3, described keyboard input unit comprises the 14 resistance R 14, the 15 resistance R 15, the 16 resistance R 16, the first K switch 1, second switch K2 and the 3rd K switch 3;
One end of described the 14 resistance R 14 is connected with an end of 32 pin of single-chip microcomputer U1, the 3rd K switch 3, one end of the 15 resistance R 15 is connected with the end of 33 pin of single-chip microcomputer U1, second switch K2, one end of the 16 resistance R 16 is connected with an end of 34 pin of single-chip microcomputer U1, the first K switch 1, another termination VCC of the 14 resistance R 14, the 15 resistance R 15 and the 16 resistance R 16, the other end ground connection of the first K switch 1, second switch K2 and the 3rd K switch 3;
As shown in Figure 4, described group of four figures display unit comprises LED digital display tube U2, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R 10, the 11 resistance R 11, the 12 resistance R 12, the 13 resistance R 13, the first transistor Q1, transistor seconds Q2, the 3rd transistor Q3 and the 4th transistor Q4;
one end of described the second resistance R 2 is connected with 39 pin of single-chip microcomputer U1, the other end of the second resistance R 2 is connected with the base stage of the first transistor Q1, the collector electrode of the first transistor Q1 is connected with the S1 pin of LED digital display tube U2, one end of the 3rd resistance R 3 is connected with 38 pin of single-chip microcomputer U1, the other end of the 3rd resistance R 3 is connected with the base stage of transistor seconds Q2, the collector electrode of transistor seconds Q2 is connected with the S2 pin of LED digital display tube U2, one end of the 4th resistance R 4 is connected with 37 pin of single-chip microcomputer U1, the other end of the 4th resistance R 4 is connected with the base stage of the 3rd transistor Q3, the collector electrode of the 3rd transistor Q3 is connected with the S3 pin of LED digital display tube U2, one end of the 5th resistance R 5 is connected with 36 pin of single-chip microcomputer U1, the other end of the 5th resistance R 5 is connected with the base stage of the 4th transistor Q4, the collector electrode of the 4th transistor Q4 is connected with the S4 pin of LED digital display tube U2, the first transistor Q1, transistor seconds Q2, the emitter of the 3rd transistor Q3 and the 4th transistor Q4 meets VCC, LED digital display tube U2 a, b, c, d, e, f, g and DP pin and an end of the 6th resistance R 6, an end of the 7th resistance R 7, an end of the 8th resistance R 8, an end of the 9th resistance R 9, an end of the tenth resistance R 10, an end of the 11 resistance R 11, an end of the 12 resistance R 12 and an end of the 13 resistance R 13 connect one to one, the other end of the other end of the other end of the other end of the other end of the other end of the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R 10, the other end of the 11 resistance R 11, the 12 resistance R 12 and the other end of the 13 resistance R 13 connect one to one with 1,2,3,4,5,6,7,8 pin of single-chip microcomputer U1 respectively, 21,22,23,24,25,26,27,28 pin of single-chip microcomputer U1 and 1,2,3,4,5,6,7,8 pin of single-chip microcomputer U1 connect one to one,
As shown in Figure 5, described light comprises the 14 resistance R 14, the 15 resistance R 15, the 4th matching capacitance C9, load capacitance CL and optocoupler components U4 every the unit; 1 pin of described optocoupler components U4 is connected with 4 pin, 2 pin are connected with an end of the 14 resistance R 14,3 pin ground connection, 5 pin are connected with the end of the 4th matching capacitance C9 and ground connection, one end of 6 pin and the 15 resistance R 15, the end of load capacitance CL also are connected with the g utmost point of power switch device Q, the other end of 7 pin, 8 pin and the 4th matching capacitance C9, the other end of the 15 resistance R 15 are connected and meet VCC, the other end of the 14 resistance R 14 is connected with 35 pin of single-chip microcomputer U1, and the other end of load capacitance CL is connected with the s utmost point of power switch device Q and ground connection;
As shown in Figure 6, described serial ports input unit comprises the first polar capacitor C4, the second polar capacitor C5, the 3rd polar capacitor C6, quadripolarity capacitor C 7, the 5th polar capacitor C8, level transferring chip U3 and serial line interface J1;
1 pin of described level transferring chip U3 is connected with the positive pole of the first polar capacitor C4, 3 pin are connected with the negative pole of the first polar capacitor C4, 4 pin are connected with the positive pole of the second polar capacitor C5, 5 pin are connected with the negative pole of the second polar capacitor C5, 11 pin are connected with 11 pin of single-chip microcomputer U1, 7 pin, 8 pin, 9 pin, 10 foot rests are empty, 12 pin are connected with 10 pin of single-chip microcomputer U1, 2 pin are connected with the positive pole of the 3rd polar capacitor C6, the negative pole of 16 pin and the 3rd polar capacitor C6, the positive pole of the 5th polar capacitor C8 connects and connects+the 5V power supply, 6 pin are connected with the negative pole of quadripolarity capacitor C 7, 13 pin are connected with 3 pin of serial line interface J1, 14 pin are connected with 2 pin of serial line interface J1, 15 pin ground connection, the minus earth of the 5th polar capacitor C8, the plus earth of quadripolarity capacitor C 7, 1 pin of serial line interface J1, 4 pin, 5 pin, 6 pin, 7 pin, 8 pin, 9 pin, 10 pin and 11 foot rests are empty.
Method of operation of the present invention is: the duty ratio that calculates the PWM waveform according to the size of required resistance.Regulate in Fig. 4 in digital display tube numerical value to obtain required duty ratio by the keyboard in Fig. 3, perhaps input required duty ratio numerical value by upper computer software, and importing signal into single-chip microcomputer by serial port circuit in Fig. 6, single-chip microcomputer is carried out the respective algorithms output pwm signal according to the dutyfactor value of input.Pwm signal carries out photoelectric coupling through the light of Fig. 5 every element, sends triggering signal to realize incorporating the control of circuit resistance to be transferred into finally for the power switch component MOSFET pipe in Fig. 1.
Claims (6)
1. precise figures standardsizing rheostat circuit comprises that resistance r to be transferred, power switch device Q, light are every unit, Single-chip Controlling unit, power input unit, group of four figures display unit, keyboard input unit and serial ports input unit;
It is characterized in that: the end of described resistance r to be transferred is connected with the d utmost point of power switch device Q and connects output port, and the other end is connected with the s utmost point of power switch device Q and connects output port, and light is sent into triggering signal every the unit to power switch device Q spare; The Single-chip Controlling unit is sent into pwm signal to light every the unit; Display is sent into to five-digit number code display unit in the Single-chip Controlling unit; The keyboard input unit is sent into input signal to the Single-chip Controlling unit; The serial ports input unit is sent into input signal to the Single-chip Controlling unit; Power input unit is sent into power supply to the Single-chip Controlling unit.
2. a kind of precise figures standardsizing rheostat circuit according to claim 1 is characterized in that: described Single-chip Controlling unit comprises single-chip microcomputer U1, switch S, the first resistance R 1, the first matching capacitance C1, the second matching capacitance C2, the 3rd matching capacitance C3 and crystal oscillator X1;
The end of 9 pin of described single-chip microcomputer U1 and the 3rd matching capacitance C3, an end of switch S and the end of resistance R 1 of being connected are connected, and the other end of the 3rd matching capacitance C3 is connected with the other end of switch S and meets VCC, the other end ground connection of the first resistance R 1; The 20 pin ground connection of single-chip microcomputer U1,18 pin are connected with the end of crystal oscillator X1, the end of the second matching capacitance C2,19 pin are connected with the other end of crystal oscillator X1, the end of the first matching capacitance C1, and the other end of the first matching capacitance C1 is connected with the other end of the second matching capacitance C2 and ground connection; 40 pin of single-chip microcomputer U1 meet VCC; Described single-chip microcomputer U1 model is AT89C51.
3. a kind of precise figures standardsizing rheostat circuit according to claim 1, it is characterized in that: described keyboard input unit comprises the 14 resistance R 14, the 15 resistance R 15, the 16 resistance R 16, the first K switch 1, second switch K2 and the 3rd K switch 3;
One end of described the 14 resistance R 14 is connected with an end of 32 pin of single-chip microcomputer U1, the 3rd K switch 3, one end of the 15 resistance R 15 is connected with the end of 33 pin of single-chip microcomputer U1, second switch K2, one end of the 16 resistance R 16 is connected with an end of 34 pin of single-chip microcomputer U1, the first K switch 1, another termination VCC of the 14 resistance R 14, the 15 resistance R 15 and the 16 resistance R 16, the other end ground connection of the first K switch 1, second switch K2 and the 3rd K switch 3.
4. a kind of precise figures standardsizing rheostat circuit according to claim 1, it is characterized in that: described group of four figures display unit comprises LED digital display tube U2, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R 10, the 11 resistance R 11, the 12 resistance R 12, the 13 resistance R 13, the first transistor Q1, transistor seconds Q2, the 3rd transistor Q3 and the 4th transistor Q4;
one end of described the second resistance R 2 is connected with 39 pin of single-chip microcomputer U1, the other end of the second resistance R 2 is connected with the base stage of the first transistor Q1, the collector electrode of the first transistor Q1 is connected with the S1 pin of LED digital display tube U2, one end of the 3rd resistance R 3 is connected with 38 pin of single-chip microcomputer U1, the other end of the 3rd resistance R 3 is connected with the base stage of transistor seconds Q2, the collector electrode of transistor seconds Q2 is connected with the S2 pin of LED digital display tube U2, one end of the 4th resistance R 4 is connected with 37 pin of single-chip microcomputer U1, the other end of the 4th resistance R 4 is connected with the base stage of the 3rd transistor Q3, the collector electrode of the 3rd transistor Q3 is connected with the S3 pin of LED digital display tube U2, one end of the 5th resistance R 5 is connected with 36 pin of single-chip microcomputer U1, the other end of the 5th resistance R 5 is connected with the base stage of the 4th transistor Q4, the collector electrode of the 4th transistor Q4 is connected with the S4 pin of LED digital display tube U2, the first transistor Q1, transistor seconds Q2, the emitter of the 3rd transistor Q3 and the 4th transistor Q4 meets VCC, LED digital display tube U2 a, b, c, d, e, f, g and DP pin and an end of the 6th resistance R 6, an end of the 7th resistance R 7, an end of the 8th resistance R 8, an end of the 9th resistance R 9, an end of the tenth resistance R 10, an end of the 11 resistance R 11, an end of the 12 resistance R 12 and an end of the 13 resistance R 13 connect one to one, the other end of the other end of the other end of the other end of the other end of the other end of the 6th resistance R 6, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R 10, the other end of the 11 resistance R 11, the 12 resistance R 12 and the other end of the 13 resistance R 13 connect one to one with 1,2,3,4,5,6,7,8 pin of single-chip microcomputer U1 respectively, 21,22,23,24,25,26,27,28 pin of single-chip microcomputer U1 and 1,2,3,4,5,6,7,8 pin of single-chip microcomputer U1 connect one to one.
5. a kind of precise figures standardsizing rheostat circuit according to claim 1, it is characterized in that: described light comprises the 14 resistance R 14, the 15 resistance R 15, the 4th matching capacitance C9, load capacitance CL and optocoupler components U4 every the unit; 1 pin of described optocoupler components U4 is connected with 4 pin, 2 pin are connected with an end of the 14 resistance R 14,3 pin ground connection, 5 pin are connected with the end of the 4th matching capacitance C9 and ground connection, one end of 6 pin and the 15 resistance R 15, the end of load capacitance CL also are connected with the g utmost point of power switch device Q, the other end of 7 pin, 8 pin and the 4th matching capacitance C9, the other end of the 15 resistance R 15 are connected and meet VCC, the other end of the 14 resistance R 14 is connected with 35 pin of single-chip microcomputer U1, and the other end of load capacitance CL is connected with the s utmost point of power switch device Q and ground connection.
6. a kind of precise figures standardsizing rheostat circuit according to claim 1, it is characterized in that: described serial ports input unit comprises the first polar capacitor C4, the second polar capacitor C5, the 3rd polar capacitor C6, quadripolarity capacitor C 7, the 5th polar capacitor C8, level transferring chip U3 and serial line interface J1;
1 pin of described level transferring chip U3 is connected with the positive pole of the first polar capacitor C4, 3 pin are connected with the negative pole of the first polar capacitor C4, 4 pin are connected with the positive pole of the second polar capacitor C5, 5 pin are connected with the negative pole of the second polar capacitor C5, 11 pin are connected with 11 pin of single-chip microcomputer U1, 7 pin, 8 pin, 9 pin, 10 foot rests are empty, 12 pin are connected with 10 pin of single-chip microcomputer U1, 2 pin are connected with the positive pole of the 3rd polar capacitor C6, the negative pole of 16 pin and the 3rd polar capacitor C6, the positive pole of the 5th polar capacitor C8 connects and connects+the 5V power supply, 6 pin are connected with the negative pole of quadripolarity capacitor C 7, 13 pin are connected with 3 pin of serial line interface J1, 14 pin are connected with 2 pin of serial line interface J1, 15 pin ground connection, the minus earth of the 5th polar capacitor C8, the plus earth of quadripolarity capacitor C 7, 1 pin of serial line interface J1, 4 pin, 5 pin, 6 pin, 7 pin, 8 pin, 9 pin, 10 pin and 11 foot rests are empty.
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| CN113456963A (en) * | 2021-07-28 | 2021-10-01 | 杭州电子科技大学 | Design method for expandable electronic circuit to simulate lung |
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| 林卫星: "激光电源的单片机控制软、硬件设计", 《工业控制计算机》, vol. 14, no. 8, 31 December 2001 (2001-12-31) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113456963A (en) * | 2021-07-28 | 2021-10-01 | 杭州电子科技大学 | Design method for expandable electronic circuit to simulate lung |
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