CN1148630C - Control device capable of elastically acquiring voltage - Google Patents

Control device capable of elastically acquiring voltage Download PDF

Info

Publication number
CN1148630C
CN1148630C CNB981259324A CN98125932A CN1148630C CN 1148630 C CN1148630 C CN 1148630C CN B981259324 A CNB981259324 A CN B981259324A CN 98125932 A CN98125932 A CN 98125932A CN 1148630 C CN1148630 C CN 1148630C
Authority
CN
China
Prior art keywords
voltage
signal
pulse
width
input voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNB981259324A
Other languages
Chinese (zh)
Other versions
CN1261174A (en
Inventor
许世法
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitac International Corp
Original Assignee
Mitac International Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitac International Corp filed Critical Mitac International Corp
Priority to CNB981259324A priority Critical patent/CN1148630C/en
Publication of CN1261174A publication Critical patent/CN1261174A/en
Application granted granted Critical
Publication of CN1148630C publication Critical patent/CN1148630C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Feedback Control In General (AREA)

Abstract

The invention provides a control device capable of flexibly obtaining voltage, which comprises a triangular wave generating circuit for generating a triangular wave signal, a comparator for comparing the triangular wave signal with an input voltage to generate a pulse width modulation signal, a direct current level adjusting circuit for adjusting the direct current level of the pulse width modulation signal, and a direct current filter circuit for performing direct current filtering on the adjusted pulse width modulation signal to generate a direct current output voltage, wherein the output voltage is determined by the output of the direct current level adjusting circuit and the pulse width of the pulse width modulation signal. The wider the pulse width of the pwm signal, the higher the output voltage.

Description

可弹性获取电压的控制装置Control device for flexible voltage acquisition

本发明系提供一种电压控制装置，尤其指一种可弹性获取电压的控制装置。The invention provides a voltage control device, in particular to a control device that can obtain voltage flexibly.

一般电脑系统设有一个电压控制装置来调制微处理器的输出电压。由于微处理器的输出电压维持在0至5V之间，电压控制装置便将电压调制范围设定在5V之内，倘若电压控制装置包含有6个用来控制电压的位(bit)，则5V的电压可被分割为64阶，每一阶为5/64V，因此使用者可每次调升或调降5/64V来改变微处理器的输出电压，以达成不同的控制功能。A general computer system is provided with a voltage control device to modulate the output voltage of the microprocessor. Since the output voltage of the microprocessor is maintained between 0 and 5V, the voltage control device sets the voltage modulation range within 5V. The voltage can be divided into 64 steps, each step is 5/64V, so the user can increase or decrease the output voltage of the microprocessor by 5/64V each time to achieve different control functions.

虽然微处理器的输出电压可调制的范围介于0至5V之间，输出电压所欲控制的对象可能仅需使用到0至2V、3至4V或2至5V等区间的电压，而区间之外的电压则不会产生控制效果。以区间0至2V为例，当微处理器的输出电压是在区间之外也就是2至5V的时候，使用者就无法感受到控制的变化，因此对使用者而言，只有0至2V是有用的控制区间。由于使用者无法感受到某些部分输出电压的控制变化，因此输出电压的部分区间会被浪费掉。除此之外，由于64阶是将5V的整个区间平均分割，因此每一阶的电压差是固定的。在这种情形下，有用的控制区间所可以产生的控制变化就会显著的减少。Although the adjustable range of the output voltage of the microprocessor is between 0 and 5V, the object to be controlled by the output voltage may only need to use the voltage in the range of 0 to 2V, 3 to 4V or 2 to 5V, and the range between An external voltage will have no control effect. Take the range of 0 to 2V as an example, when the output voltage of the microprocessor is outside the range, that is, 2 to 5V, the user cannot feel the change of control, so for the user, only 0 to 2V is the Useful control interval. Since the user cannot feel the control change of some part of the output voltage, part of the range of the output voltage will be wasted. In addition, since the 64-level is to divide the entire range of 5V equally, the voltage difference of each level is fixed. In this case, the control variation that can be produced by the useful control interval is significantly reduced.

因此，本发明的主要目的在于提供一种可弹性获取电压的控制装置，其可将输出电压的范围限定于使用者接口可感受的区间内，同时使每一阶所代表的电压差随着控制区间缩小而缩小，所以使用者不仅可以避免在调制时进入没有意义的控制区间，也可以更精确地调制电压。Therefore, the main purpose of the present invention is to provide a control device that can obtain voltage flexibly, which can limit the range of output voltage to the range that can be felt by the user interface, and at the same time make the voltage difference represented by each step follow the control The interval is narrowed and narrowed, so the user can not only avoid entering the meaningless control interval when modulating, but also modulate the voltage more accurately.

本发明提供的一种电压控制装置，该电压控制装置包含：(1)一三角波产生电路，用来产生一三角波信号，包含有一方波产生器，用来产生一方波信号，以及一积分电路，用来将该方波信号予以积分以产生该三角波信号；(2)一比较器，用来将该三角波信号与一输入电压做比较以产生一脉宽调制信号；(3)一直流电平调整电路，用来调整该脉宽调制信号的直流电平；以及(4)一直流滤波电路，用来将该调整后的脉宽调制信号予以直流滤波产生一直流输出电压；其中，该输出电压系由该直流电平调整电路的输出以及该脉宽调制信号的脉冲宽度来决定，若该脉宽调制信号的脉冲宽度越宽，则该输出电压就越高。A voltage control device provided by the present invention, the voltage control device includes: (1) a triangular wave generating circuit, used to generate a triangular wave signal, including a square wave generator, used to generate a square wave signal, and an integrating circuit, Used to integrate the square wave signal to generate the triangular wave signal; (2) a comparator, used to compare the triangular wave signal with an input voltage to generate a pulse width modulation signal; (3) a DC level adjustment circuit , used to adjust the DC level of the pulse width modulation signal; and (4) a DC filter circuit, used to perform DC filtering on the adjusted pulse width modulation signal to generate a DC output voltage; wherein, the output voltage is determined by the It is determined by the output of the DC level adjustment circuit and the pulse width of the pulse width modulation signal. If the pulse width of the pulse width modulation signal is wider, the output voltage will be higher.

本发明的目的、特征、优点将参考附图结合实施例详述如下。The purpose, features and advantages of the present invention will be described in detail as follows with reference to the accompanying drawings and embodiments.

附图简要说明Brief description of the drawings

图1为本发明电压控制装置的电路图；Fig. 1 is the circuit diagram of voltage control device of the present invention;

图2为图1电压控制装置各电路节点的电压图；Fig. 2 is a voltage diagram of each circuit node of the voltage control device of Fig. 1;

图3显示图1直流输出电压相对于输入电压的变化；Figure 3 shows the variation of the DC output voltage of Figure 1 relative to the input voltage;

图4为图1比较电路的另一实施例；Fig. 4 is another embodiment of Fig. 1 comparison circuit;

图5为图4电路形成的直流输出电压Vo相对于输入电压Vc的变化。Fig. 5 is the change of the DC output voltage V o relative to the input voltage V c formed by the circuit of Fig. 4 .

请参阅图1及图2，图1为本发明电压控制装置10的电路图，图2为电压控制装置10的各个节点的电压图。电压控制装置10包含有一三角波产生电路12，用来于V2端产生一三角波信号32，一比较电路14，其包含有一比较器A3用来将三角波信号32与一来自微处理器(未显示)的输入电压Vc做比较以于V3端产生一脉宽调制(Pulse-Width-Modulation)信号34，一直流电平调整电路16，用来调整脉宽调制信号34的直流电平以于V4端产生一调整后的脉宽调制信号36，以及一直流滤波电路18，用来将调整后的脉宽调制信号36予以直流滤波以产生一直流输出电压Vo。三角波产生电路12包含有一方波产生器20，用来于V1端产生一方波信号30，以及一积分电路22，用来将方波信号30予以积分以产生三角波信号32。Please refer to FIG. 1 and FIG. 2 , FIG. 1 is a circuit diagram of the voltage control device 10 of the present invention, and FIG. 2 is a voltage diagram of each node of the voltage control device 10 . The voltage control device 10 includes a triangular wave generating circuit 12, which is used to generate a triangular wave signal 32 at the V2 terminal, and a comparison circuit 14, which includes a comparator A 3 for comparing the triangular wave signal 32 with a signal from a microprocessor (not shown). ) input voltage Vc for comparison to generate a pulse-width modulation (Pulse-Width-Modulation) signal 34 at the V3 terminal, a DC level adjustment circuit 16, used to adjust the DC level of the pulse-width modulation signal 34 to V4 An adjusted PWM signal 36 is generated at the end, and a DC filter circuit 18 is used for DC filtering the adjusted PWM signal 36 to generate a DC output voltage V o . The triangular wave generating circuit 12 includes a square wave generator 20 for generating a square wave signal 30 at the terminal V 1 , and an integrating circuit 22 for integrating the square wave signal 30 to generate a triangular wave signal 32 .

积分电路22包含有一电容Co及一可变电阻Ro，可变电阻Ro由一输出入端24连接于微处理器，用来调整三角波信号32的振幅。三角波信号32连接于比较器A3的负极，而输入电压Vc连接于比较器A3的正极，当三角波信号32小于输入电压Vc时，比较器A3会产生脉宽调制信号34，由于脉宽调制信号34的脉冲宽度与输入电压Vc成正比，因此当输入电压Vc逐渐上升时，直流输出电压Vo也会逐渐升高。The integrating circuit 22 includes a capacitor C o and a variable resistor R o . The variable resistor R o is connected to the microprocessor through an input-output terminal 24 for adjusting the amplitude of the triangular wave signal 32 . The triangular wave signal 32 is connected to the negative pole of the comparator A 3 , and the input voltage V c is connected to the positive pole of the comparator A 3. When the triangular wave signal 32 is less than the input voltage V c , the comparator A 3 will generate a pulse width modulation signal 34, because The pulse width of the PWM signal 34 is proportional to the input voltage V c , so when the input voltage V c increases gradually, the DC output voltage V o also increases gradually.

请参考图3，图3显示直流输出电压Vo相对于输入电压Vc的变化。输入电压Vc可变化的最大及最小电位分别为5V及0V，而一般三角波信号32的振幅大于输入电压Vc的最大电压值5V，举例来说，当微处理器允许使用者调制输入电压Vc的范围介于1至3V时，微处理器必需经由输出入端24改变可变电阻Ro的电阻值，以加大三角波信号32的振幅，使脉宽调制信号34的脉冲宽度相对的变窄，以将输入电压Vc的可变范围限定在2V之内。除此之外，电压控制装置的6个用来分割电压的位(bit)会将2V分割为64阶，因此每一阶的电压差成为1/32V。Please refer to FIG. 3, which shows the variation of the DC output voltage V o relative to the input voltage V c . The variable maximum and minimum potentials of the input voltage Vc are 5V and 0V respectively, and the amplitude of the general triangular wave signal 32 is greater than the maximum voltage value of the input voltage Vc by 5V. For example, when the microprocessor allows the user to modulate the input voltage V When the range of c is between 1 and 3V, the microprocessor must change the resistance value of the variable resistor R o through the input and output terminals 24 to increase the amplitude of the triangular wave signal 32 and make the pulse width of the pulse width modulation signal 34 relatively variable. Narrow to limit the variable range of the input voltage Vc within 2V. In addition, the 6 bits used to divide the voltage of the voltage control device will divide 2V into 64 steps, so the voltage difference of each step becomes 1/32V.

直流电平调整电路16包含有一电阻R1及一可变电阻R2，可变电阻R2由另一输入端26连接于微处理器，用来调整脉宽调制信号34的直流电平。以前例来说，由于微处理器允许使用者调制输入电压Vc的范围介于1至3V之间，微处理器会经由端26来改变可变电阻R2的电阻值，使脉宽调制信号34调至1至3V的脉宽调制信号36。而后直流滤波电路18会将脉宽调制信号36予以直流滤波以产生直流输出电压Vo。如图3所示，当输入电压Vc为0V时，直流输出电压Vo为1V；当输入电压Vc为5V时，直流输出电压Vc变为3V。The DC level adjustment circuit 16 includes a resistor R 1 and a variable resistor R 2 . The variable resistor R 2 is connected to the microprocessor through another input terminal 26 for adjusting the DC level of the PWM signal 34 . In the previous example, since the microprocessor allows the user to adjust the input voltage Vc within the range of 1 to 3V, the microprocessor will change the resistance value of the variable resistor R2 through the terminal 26, so that the pulse width modulation signal 34 tuned to a pulse width modulated signal 36 of 1 to 3V. Then the DC filter circuit 18 performs DC filtering on the PWM signal 36 to generate a DC output voltage V o . As shown in Figure 3, when the input voltage V c is 0V, the DC output voltage V o is 1V; when the input voltage V c is 5V, the DC output voltage V c becomes 3V.

请参阅图4，图4为比较电路的另一实施例40。在此实施例中，三角波信号32连接于比较器A3的正极，而输入电压Vc连接于比较器A3的负极。当三角波信号32大于输入电压Vc时，比较器A3会产生脉宽调制信号34，由于脉宽调制信号34的脉冲宽度与输入电压Vc成反比，因此当输入电压Vc逐渐上升时，直流输出电压Vo会逐渐下降。Please refer to FIG. 4 , which is another embodiment 40 of the comparison circuit. In this embodiment, the triangular wave signal 32 is connected to the positive terminal of the comparator A 3 , and the input voltage V c is connected to the negative terminal of the comparator A 3 . When the triangular wave signal 32 is greater than the input voltage Vc , the comparator A3 will generate a PWM signal 34. Since the pulse width of the PWM signal 34 is inversely proportional to the input voltage Vc , when the input voltage Vc gradually rises, The DC output voltage V o will drop gradually.

请参阅图5，图5为比较电路40形成的直流输出电压Vo相对于输入电压Vc的变化。由于输入电压Vc与输出电压Vo成反比，当输入电压Vc为0V时，直流输出电压Vo为3V；而当输入电压Vc为5V时，直流输出电压Vo变为1V。Please refer to FIG. 5 , which shows the variation of the DC output voltage V o formed by the comparison circuit 40 relative to the input voltage V c . Since the input voltage V c is inversely proportional to the output voltage V o , when the input voltage V c is 0V, the DC output voltage V o is 3V; and when the input voltage V c is 5V, the DC output voltage V o becomes 1V.

相较于习知电压控制装置，本发明的电压控制装置10将调制电压的范围限定在使用者接口可感受到的区间内，在此范围内将电压加以分割，以产生更小的电压差，所以使用者不仅可以避免在调制时进入没有意义的调制区域，也可以更精确地调制电压。Compared with the conventional voltage control device, the voltage control device 10 of the present invention limits the modulation voltage range to the range that can be sensed by the user interface, and divides the voltage within this range to generate a smaller voltage difference. So the user can not only avoid entering the meaningless modulation area during modulation, but also modulate the voltage more accurately.

以上所述仅为本发明的较佳实施例，凡依本发明权利要求范围所做的均等变化与修饰，皆应属本发明权利要求涵盖范围。The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.

Claims (6)

1. voltage-operated device is characterized in that this voltage-operated device includes:
(1) one circuit for generating triangular wave is used for producing a triangular signal, includes a squarer, is used for producing a square-wave signal, and an integrating circuit, is used for this square-wave signal is given integration to produce this triangular signal;
(2) one comparers are used for this triangular signal and an input voltage are compared to produce a pulse-width signal;
(3) one direct current level adjusting circuits are used for adjusting the DC level of this pulse-width signal; And
(4) one direct current filtering circuits are used for that this adjusted pulse-width signal is given DC filtering and produce a direct current output voltage;
Wherein, this output voltage system adjusts the output of circuit by this DC level and the pulse width of this pulse-width signal decides, if the pulse width of this pulse-width signal is wide more, then this output voltage is just high more.
2. voltage-operated device as claimed in claim 1, it is characterized in that transformable maximum of this input voltage and minimum level for fixing, the amplitude of the triangular signal that this circuit for generating triangular wave is exported then can be adjusted to determine the maximum pulse of this pulse-width signal.
3. voltage-operated device as claimed in claim 1 is characterized in that this integrating circuit includes a variable resistor, is used for adjusting the amplitude of this triangular signal.
4. voltage-operated device as claimed in claim 1 is characterized in that this DC level adjustment circuit includes a variable resistor, is used for adjusting the DC level of this pulse-width signal.
5. voltage-operated device as claimed in claim 1, when it is characterized in that this triangular signal less than this input voltage, this comparer can produce this pulse-width signal, the pulse width system of this pulse-width signal is directly proportional with this input voltage, therefore when this input voltage rose gradually, this output voltage also can progressively raise.
6. voltage-operated device as claimed in claim 1, when it is characterized in that this triangular signal greater than this input voltage, this comparer can produce this pulse-width signal, the pulse width system of this pulse-width signal is inversely proportional to this input voltage, therefore when this input voltage rose gradually, this output voltage can progressively descend.
CNB981259324A 1998-12-24 1998-12-24 Control device capable of elastically acquiring voltage Expired - Fee Related CN1148630C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB981259324A CN1148630C (en) 1998-12-24 1998-12-24 Control device capable of elastically acquiring voltage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB981259324A CN1148630C (en) 1998-12-24 1998-12-24 Control device capable of elastically acquiring voltage

Publications (2)

Publication Number Publication Date
CN1261174A CN1261174A (en) 2000-07-26
CN1148630C true CN1148630C (en) 2004-05-05

Family

ID=5229423

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB981259324A Expired - Fee Related CN1148630C (en) 1998-12-24 1998-12-24 Control device capable of elastically acquiring voltage

Country Status (1)

Country Link
CN (1) CN1148630C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100427364B1 (en) 2002-03-06 2004-04-14 현대자동차주식회사 Battery system current measuring system of electric vehicle
TWI396389B (en) 2007-06-04 2013-05-11 Quanta Comp Inc Complex switch control system
JP5644125B2 (en) * 2010-02-03 2014-12-24 富士電機株式会社 Starting method of DC-DC conversion circuit
WO2016077678A1 (en) * 2014-11-14 2016-05-19 Boston Scientific Scimed, Inc. Surgical laser systems and laser devices

Also Published As

Publication number Publication date
CN1261174A (en) 2000-07-26

Similar Documents

Publication Publication Date Title
CN1148630C (en) Control device capable of elastically acquiring voltage
KR20000075877A (en) Voltage divider providing switchable resolution
US5515723A (en) Humidity meter
CN112333894B (en) Dimming control circuit and method
CN102135869B (en) Hybrid Wide Range Divider and Method
CN112671233B (en) Compensation circuit and switching power supply
JPH0570962B2 (en)
JPH087462Y2 (en) Reference power circuit
JP4082238B2 (en) High pressure discharge lamp lighting device
JPS58121814A (en) Amplitude limit circuit
JPS5829376A (en) Phase control circuit with pulse width limiting circuit
JPH041524B2 (en)
JPH04219013A (en) Pulse width adjustment circuit
JP2000278097A5 (en)
CN118688496A (en) Regulator voltage detection circuit and semiconductor device
JPS5814095B2 (en) Waveform shaping circuit
JPH06260905A (en) Clamp circuit
CN100426643C (en) Switch regulator
SU763869A1 (en) Dc voltage pulse stabilizer
JPH087700Y2 (en) Offset adjustment circuit of comparison circuit with hysteresis
TW202127794A (en) Class d power amplifier
JPH07152990A (en) 2-wire transmission device
JPS60248060A (en) Tone generating circuit
JPS5833562B2 (en) rate of change limiter
JPS61258533A (en) Amplitude variable da conversion integrated circuit

Legal Events

Date Code Title Description
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C06 Publication
PB01 Publication
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20040505

Termination date: 20131224