CN106680737A - Positive and negative power supply voltage balance performance indicating device for experimental facility - Google Patents
Positive and negative power supply voltage balance performance indicating device for experimental facility Download PDFInfo
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- CN106680737A CN106680737A CN201710119248.3A CN201710119248A CN106680737A CN 106680737 A CN106680737 A CN 106680737A CN 201710119248 A CN201710119248 A CN 201710119248A CN 106680737 A CN106680737 A CN 106680737A
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- 238000012937 correction Methods 0.000 claims abstract description 22
- 239000000654 additive Substances 0.000 claims description 4
- 230000000996 additive effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 238000002474 experimental method Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007717 exclusion Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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- Measurement Of Current Or Voltage (AREA)
Abstract
The invention provides a positive and negative power supply voltage balance performance indicating device for an experimental facility. The device comprises a positive and negative power supply interface (1), a voltage arithmetic unit (2), an automatic polarity correction unit (3), an impedance conversion unit (4), a voltage reference unit (5), a voltage comparison unit (6) and an indicating unit (7). Through voltage signals, provided by the positive and negative power supply interface, of a positive and negative power supply, the difference value of the positive and negative power supply is operated through the voltage operation unit, according to the operation result, positive unbalance voltage is output by the automatic polarity correction unit, high-impedance voltage signals of the impedance conversion unit are converted into low-impedance voltage signals to be output, the low-impedance voltage signals are transmitted to the voltage comparison unit, after comparison with reference voltage signals, signals for driving light-emitting diodes to emit light are output, and then it is indicated that voltage of the positive and negative power supply is in an unbalance state or not.
Description
Technical field
The present invention relates to the performance monitoring of DC source, particularly experimental facilitiess are indicated with positive-negative power balance of voltage performance
Device, belongs to power detecting technical field.
Background technology
Some experimental facilitiess for doing sensor experiment at present adopt positive-negative power to the operational amplifier of device interior mostly
Power supply, in experimentation, is frequently found student's wiring and correctly cannot get correct experimental result, wherein some reason
It is exactly that positive-negative power is out of joint.
For the impact that the imbalance for reducing positive-negative power voltage is brought to experiment, the equilibrium for aligning negative supply voltage is needed
Performance carries out real-time monitoring, so as to the poised state for timely and conveniently observing power supply.
The content of the invention
It is an object of the invention to provide experimental facilitiess positive-negative power balance of voltage performance instruction device, reduces positive-negative power
The impact that the imbalance of voltage is brought to experiment, by aligning the equalization performance of negative supply voltage real-time monitoring is carried out, and is given in real time
Go out indication signal, so as to the poised state for observing power supply in time, be easy to the exclusion to power failure.
The object of the present invention is achieved like this：Experimental facilitiess positive-negative power balance of voltage performance instruction device, including：
Positive-negative power interface（1）, voltage operational unit（2）, polarity is from dynamic(al) correction unit（3）, impedance converter unit（4）, voltage reference
Unit（5）, voltage comparison unit（6）, indicating member（7）；Wherein：
Positive-negative power interface（1）：It is connected with positive-negative power, and each unit for device is powered, and is constituted with correlation unit and is electrically connected
Connect；
Voltage operational unit（2）：Heteropolarity additive operation is carried out to the voltage of positive-negative power, with positive-negative power interface（1）And pole
Property is from dynamic(al) correction unit（3）Constitute electrical connection；
Polarity is from dynamic(al) correction unit（3）：To voltage operational unit（2）The uneven reverse voltage of output is corrected to automatically
Positive polarity voltage, with positive-negative power interface（1）With voltage operational unit（2）, impedance converter unit（4）Constitute electrical connection；
Impedance converter unit（4）：By polarity from dynamic(al) correction unit（3）It is defeated that the high impedance signal of output is converted to low-resistance antinoise signal
Go out, with polarity from dynamic(al) correction unit（3）And voltage comparison unit（6）Constitute electrical connection；
Voltage reference cell（5）：Reference voltage is provided for voltage comparison unit, with positive-negative power interface（1）It is more single with voltage ratio
Unit（6）Constitute electrical connection；
Voltage comparison unit（6）：According to the uneven degree output signal of positive-negative power voltage, with positive-negative power interface（1）, resistance
Anti- converter unit（4）, voltage reference cell（5）, indicating member（7）Constitute electrical connection；
Indicating member（7）：According to voltage comparison unit（6）Outputs level signals, align the uneven degree of negative supply voltage
Indicated, with positive-negative power interface（1）And voltage comparison unit（6）Constitute electrical connection.
The present invention is formed according to above-mentioned design using above-mentioned formant organic assembling, and its operation principle is：Pass through
The voltage signal of the positive-negative power that positive-negative power interface is provided, Jing voltage operationals unit carries out computing to the difference of positive-negative power,
Operation result Jing polarity exports positive unbalance voltage from dynamic(al) correction unit, by impedance converter unit by high impedance voltage signal
Voltage signal in low impedance output is converted to, voltage comparison unit is then sent through, Jing after comparing with reference voltage signal, output driving is sent out
The luminous signal of optical diode, to indicate the voltage of positive-negative power whether in unbalanced state.
Advantages of the present invention and effect are that the voltage to positive-negative power carries out real-time detection, indicate positive-negative power voltage not
Poised state, is easy to the exclusion to power failure.
Description of the drawings
With reference to the accompanying drawings and examples the present invention is further described.
Fig. 1 is the circuit block diagram of the present invention.
Fig. 2 is the circuit catenation principle figure of embodiment.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is right below in conjunction with drawings and Examples
The present invention is described in further detail, and specific embodiment described herein only to explain the present invention, is not used to limit
The fixed present invention.
Refer to Fig. 1, experimental facilitiess positive-negative power balance of voltage performance instruction device, including：Positive-negative power interface
（1）, voltage operational unit（2）, polarity is from dynamic(al) correction unit（3）, impedance converter unit（4）, voltage reference cell（5）, voltage
Comparing unit（6）, indicating member（7）；Wherein positive-negative power interface（1）It is connected with positive-negative power, and each unit for device is supplied
Electricity, constitutes with correlation unit and is electrically connected；Voltage operational unit（2）Heteropolarity additive operation is carried out to the voltage of positive-negative power,
With positive-negative power interface（1）With polarity from dynamic(al) correction unit（3）Constitute electrical connection；Polarity is from dynamic(al) correction unit（3）To voltage
Arithmetic element（2）The uneven reverse voltage of output is corrected to positive polarity voltage automatically, with positive-negative power interface（1）With
Voltage operational unit（2）, impedance converter unit（4）Constitute electrical connection；Impedance converter unit（4）By polarity from dynamic(al) correction unit
（3）The high impedance signal of output is converted to Low ESR signal output, with polarity from dynamic(al) correction unit（3）And voltage comparison unit
（6）Constitute electrical connection；Voltage reference cell（5）Reference voltage is provided for voltage comparison unit, with positive-negative power interface（1）With
Voltage comparison unit（6）Constitute electrical connection；Voltage comparison unit（6）Believed according to the output of the uneven degree of positive-negative power voltage
Number, with positive-negative power interface（1）, impedance converter unit（4）, voltage reference cell（5）, indicating member（7）Constitute electrical connection；
Indicating member（7）According to voltage comparison unit（6）Outputs level signals, the uneven degree for aligning negative supply voltage referred to
Show, with positive-negative power interface（1）And voltage comparison unit（6）Constitute electrical connection.
Please referring further to Fig. 2, socket CZ1 is positive-negative power interface, and the 1st pin is connected to positive power source terminal V+, the 2nd pin
It is connected to experimental facilitiess publicly, the 3rd pin is connected to negative power end V-.
U1 adopts integrated four high guaily unit, model LM324, including tetra- operational amplifier lists of U1A, U1B, U1C, U1D
Unit.
Voltage operational unit is made up of resistance R1~R3 and operational amplifier U1A.One end of resistance R1 is connected to positive supply
End, the other end is connected to the 2nd pin of operational amplifier U1A；One end of resistance R2 is connected to negative power end, and the other end is connected to
2nd pin of operational amplifier U1A；The two ends of resistance R3 are connected respectively to the 2nd pin and the 1st pin of operational amplifier U1A；
3rd pin of operational amplifier U1A is connected to ground；4th pin of operational amplifier U1A is connected to positive power source terminal；Operation amplifier
11st pin of device U1A is connected to negative power end.Electric capacity C1, C2 are filter capacitors.The effect of voltage operational unit is to positive and negative
The voltage of power supply carries out heteropolarity additive operation, can be carried out unbalance voltage with the ratio of R1, R2 by changing resistance R3
Appropriate amplification.
Polarity is made up of from dynamic(al) correction unit resistance R4~R6, diode D1, D2 and operational amplifier U1B；Impedance is converted
Unit is made up of operational amplifier U1C.Resistance R4, R5, R6 form T-type structure, respectively have one end to be connected together, and resistance R4's is another
One end is connected to the 1st pin of operational amplifier U1A, and the other end of resistance R5 is connected to the 6th pin of operational amplifier U1B,
The other end of resistance R6 is connected to the 10th pin of operational amplifier U1C；The anode of diode D1 is connected to operational amplifier U1B
The 6th pin, negative electrode is connected to the 7th pin of operational amplifier U1B；The anode of diode D2 is connected to operational amplifier U1B
The 7th pin, negative electrode is connected to the 10th pin of operational amplifier U1C；5th pin of operational amplifier U1B is connected to ground；Fortune
The 9th pin for calculating amplifier U1C is connected with the 8th pin of U1C.
Voltage reference cell is made up of resistance R9~R11, electric capacity C3 and voltage-stabilizing device D3, by D3 voltage stabilizings, resistance R10 with
R11 partial pressures, for voltage comparison unit suitable reference voltage is provided.
Voltage comparison unit is served as by operational amplifier U1D, and comparison voltage is provided by resistance R7 and R8 partial pressure, with resistance
Voltage on R11 is compared, and when the voltage on resistance R8 is higher than the voltage on resistance R11, the 14th pin output of U1D is low
Level signal.
Indicating member is made up of resistance R12, light emitting diode D4, when voltage comparison unit exports low level signal, is sent out
Optical diode is lighted, so as to the unbalanced state for aligning negative supply voltage is indicated.
To make the present invention reach purpose of design and play good performance, component parameters should be as follows matched：
The configuration method of component parameters of voltage operational unit is：Resistance R1 is equal with the resistance of resistance R2, and resistance R3 is used to adjust
Amplification, embodiment is from R1=R2=R3=10k Ω.
Polarity is from the configuration method of component parameters of dynamic(al) correction unit：Resistance R4 is equal with the resistance of resistance R5, resistance R6
Resistance be resistance R4 half, embodiment is from R4=R5=20k Ω, R6=10k Ω.
Claims (5)
1. experimental facilitiess positive-negative power balance of voltage performance instruction device, it is characterised in that include：Positive-negative power interface（1）、
Voltage operational unit（2）, polarity is from dynamic(al) correction unit（3）, impedance converter unit（4）, voltage reference cell（5）, voltage ratio compared with
Unit（6）, indicating member（7）；Wherein：
Positive-negative power interface（1）：It is connected with positive-negative power, and each unit for device is powered, and is constituted with correlation unit and is electrically connected
Connect；
Voltage operational unit（2）：Heteropolarity additive operation is carried out to the voltage of positive-negative power, with positive-negative power interface（1）And pole
Property is from dynamic(al) correction unit（3）Constitute electrical connection；
Polarity is from dynamic(al) correction unit（3）：To voltage operational unit（2）The uneven reverse voltage of output is corrected to automatically
Positive polarity voltage, with positive-negative power interface（1）With voltage operational unit（2）, impedance converter unit（4）Constitute electrical connection；
Impedance converter unit（4）：By polarity from dynamic(al) correction unit（3）It is defeated that the high impedance signal of output is converted to low-resistance antinoise signal
Go out, with polarity from dynamic(al) correction unit（3）And voltage comparison unit（6）Constitute electrical connection；
Voltage reference cell（5）：Reference voltage is provided for voltage comparison unit, with positive-negative power interface（1）It is more single with voltage ratio
Unit（6）Constitute electrical connection；
Voltage comparison unit（6）：According to the uneven degree output signal of positive-negative power voltage, with positive-negative power interface（1）, resistance
Anti- converter unit（4）, voltage reference cell（5）, indicating member（7）Constitute electrical connection；
Indicating member（7）：According to voltage comparison unit（6）Outputs level signals, align the uneven degree of negative supply voltage
Indicated, with positive-negative power interface（1）And voltage comparison unit（6）Constitute electrical connection.
2. experimental facilitiess according to claim 1 positive-negative power balance of voltage performance instruction device, it is characterised in that institute
The voltage operational unit stated is made up of resistance R1~R3 and operational amplifier U1A；One end of resistance R1 is connected to positive power source terminal, separately
One end is connected to the 2nd pin of operational amplifier U1A；One end of resistance R2 is connected to negative power end, and the other end is connected to computing
2nd pin of amplifier U1A；The two ends of resistance R3 are connected respectively to the 2nd pin and the 1st pin of operational amplifier U1A；Computing
3rd pin of amplifier U1A is connected to ground；4th pin of operational amplifier U1A is connected to positive power source terminal；Operational amplifier U1A
The 11st pin be connected to negative power end.
3. experimental facilitiess according to claim 1 positive-negative power balance of voltage performance instruction device, it is characterised in that institute
The polarity stated is made up of from dynamic(al) correction unit resistance R4~R6, diode D1, D2 and operational amplifier U1B；Impedance converter unit
It is made up of operational amplifier U1C；Resistance R4, R5, R6 form T-type structure, respectively have one end to be connected together, the other end of resistance R4
The 1st pin of operational amplifier U1A is connected to, the other end of resistance R5 is connected to the 6th pin of operational amplifier U1B, resistance
The other end of R6 is connected to the 10th pin of operational amplifier U1C；The anode of diode D1 is connected to the of operational amplifier U1B
6 pins, negative electrode is connected to the 7th pin of operational amplifier U1B；The anode of diode D2 is connected to the 7th of operational amplifier U1B
Pin, negative electrode is connected to the 10th pin of operational amplifier U1C；5th pin of operational amplifier U1B is connected to ground；Computing is put
9th pin of big device U1C is connected with the 8th pin of U1C.
4. experimental facilitiess according to claim 1 positive-negative power balance of voltage performance instruction device, it is characterised in that institute
The configuration method of component parameters of the voltage operational unit stated is：Resistance R1 is equal with the resistance of resistance R2, and resistance R3 is used to adjust
Amplification, embodiment is from R1=R2=R3=10k Ω.
5. experimental facilitiess according to claim 1 positive-negative power balance of voltage performance instruction device, it is characterised in that institute
The polarity stated is from the configuration method of component parameters of dynamic(al) correction unit：Resistance R4 is equal with the resistance of resistance R5, the resistance of resistance R6
Value is the half of resistance R4, and embodiment is from R4=R5=20k Ω, R6=10k Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710119248.3A CN106680737B (en) | 2017-03-02 | 2017-03-02 | Positive and negative power supply voltage balance performance indicating device for experimental equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710119248.3A CN106680737B (en) | 2017-03-02 | 2017-03-02 | Positive and negative power supply voltage balance performance indicating device for experimental equipment |
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| CN106680737A true CN106680737A (en) | 2017-05-17 |
| CN106680737B CN106680737B (en) | 2023-10-31 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1139318A (en) * | 1995-04-27 | 1997-01-01 | 三星电子株式会社 | Voltage balancing circuit |
| CN1707903A (en) * | 2004-06-05 | 2005-12-14 | 摩托罗拉公司 | Cell balancing circuit |
| CN201174408Y (en) * | 2004-10-04 | 2008-12-31 | 布莱克和戴克公司 | Apparatus for monitoring cell of cell pack and apparatus for balancing cell voltage during charging |
| CN205232007U (en) * | 2015-12-09 | 2016-05-11 | 河北世纪恒兴电子技术有限公司 | On -vehicle switching power supply operating condition indicating circuit |
| CN206671512U (en) * | 2017-03-02 | 2017-11-24 | 南京交通职业技术学院 | Experimental facilities positive-negative power balance of voltage performance instruction device |
-
2017
- 2017-03-02 CN CN201710119248.3A patent/CN106680737B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1139318A (en) * | 1995-04-27 | 1997-01-01 | 三星电子株式会社 | Voltage balancing circuit |
| CN1707903A (en) * | 2004-06-05 | 2005-12-14 | 摩托罗拉公司 | Cell balancing circuit |
| CN201174408Y (en) * | 2004-10-04 | 2008-12-31 | 布莱克和戴克公司 | Apparatus for monitoring cell of cell pack and apparatus for balancing cell voltage during charging |
| CN205232007U (en) * | 2015-12-09 | 2016-05-11 | 河北世纪恒兴电子技术有限公司 | On -vehicle switching power supply operating condition indicating circuit |
| CN206671512U (en) * | 2017-03-02 | 2017-11-24 | 南京交通职业技术学院 | Experimental facilities positive-negative power balance of voltage performance instruction device |
Non-Patent Citations (2)
| Title |
|---|
| AMIN GHAZANFARI 等: "A Hierarchical Permutation Cyclic Coding Strategy for Sensorless Capacitor Voltage Balancing in Modular Multilevel Converters" * |
| 袁志昌等: "改善动态相位跟踪和不平衡电压检测性能的改进软锁相环算法" * |
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