CN110208722A - Detect the device and method thereof of DC power supply stability - Google Patents
Detect the device and method thereof of DC power supply stability Download PDFInfo
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- CN110208722A CN110208722A CN201910636857.5A CN201910636857A CN110208722A CN 110208722 A CN110208722 A CN 110208722A CN 201910636857 A CN201910636857 A CN 201910636857A CN 110208722 A CN110208722 A CN 110208722A
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- 238000001914 filtration Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 3
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- 230000007423 decrease Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
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- 230000004048 modification Effects 0.000 description 1
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- 238000005070 sampling Methods 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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Abstract
The present invention provides a kind of device and method thereof for detecting DC power supply stability, and wherein the equipment includes: tunable load configuration circuit, detection circuit and control unit；Wherein, after the device power to the detection DC power supply stability, described control unit exports reference potential to the detection circuit being electrically connected with the control unit；The detection circuit feeds back electric signal to described control unit, wherein the electric signal is used to indicate whether to detect burr；The tunable load configuration circuit, for the load of the equipment to be arranged according to the running parameter of electronic equipment to be measured.Through the invention, it solves the problems, such as often to occur in the related technology to lead to be powered equipment operation irregularity or exceeded because power supply adaptor is unstable.
Description
Technical field
The present invention relates to circuit fields, in particular to a kind of device and method thereof for detecting DC power supply stability.
Background technique
The product of electronic market is numerous at present, but most of product is to need client voluntarily to purchase not equipped with power supply
Power supply adaptor is bought, but the broad categories of adapter on the market, standard is different, often occurs because power supply adaptor is unstable
Cause to be powered equipment operation irregularity calmly or EMC (Electro Magnetic Compatibility, battery compatibility) is super
Target phenomenon.
It in view of the above problems in the related art, is currently not yet the presence of effective solution.
Summary of the invention
The embodiment of the invention provides a kind of device and method thereof for detecting DC power supply stability, at least to solve correlation
Often occur to cause to be powered equipment operation irregularity or exceeded problem because power supply adaptor is unstable in technology.
According to one embodiment of present invention, a kind of equipment for detecting DC power supply stability is provided, comprising: adjustable negative
Carry configuration circuit, detection circuit and control unit；Wherein, after the device power to the detection DC power supply stability, institute
It states control unit and exports reference potential to the detection circuit being electrically connected with the control unit；The detection circuit is to the control
Unit feeds back electric signal, wherein the electric signal is used to indicate whether to detect burr；The tunable load configuration circuit is used
In the load that the equipment is arranged according to the running parameter of electronic equipment to be measured.
Optionally, the tunable load configuration circuit includes: multiple sub- load configuration circuits；Wherein, each height load
Configuration circuit includes a switch, a capacitor and a resistance；The both ends of the capacitor first end with the switch respectively
It is electrically connected with second end, described resistance one end is connect with the third end of the switch, other end ground connection, the 4th end of the switch
It connects to power supply.
Optionally, the detection circuit is made of two comparators.
Optionally, further includes: sample circuit；Wherein, the input terminal of the sample circuit and tunable load configuration electricity
Road electrical connection, the output end of the sample circuit is electrically connected with the detection circuit, for acquiring the high frequency of the detection circuit
Component of voltage.
Optionally, the sample circuit is by two concatenated resistance, two concatenated capacitors, two two poles of concatenated rectification
Pipe and a follower composition；Wherein, concatenated resistance, concatenated capacitor and concatenated rectifier diode respectively with it is described
Follower is in parallel.
Optionally, further includes: filter circuit and voltage regulator circuit；Described filter circuit one end connects to power supply, one end and institute
Voltage regulator circuit connection is stated, for being filtered to the voltage of input；Described voltage regulator circuit one end is connect with the filter circuit, and one
End is connect with described control unit, for exporting burning voltage to described control unit.
According to another embodiment of the invention, a kind of method for detecting DC power supply stability is provided, comprising: right
After the device power for detecting DC power supply stability, the control unit in the equipment of the detection DC power supply stability is to detection
Circuit output reference potential；The detection circuit feeds back electric signal to described control unit, wherein the electric signal is used to indicate
Whether burr is detected；Described control unit determines whether adjusting parameter by the electric signal to determine the peak value of burr.
Optionally, described control unit determines whether adjusting parameter by the electric signal to determine the peak value of burr, wraps
Include: in the case where the reference potential is upper limit reference current potential and detects burr, described control unit increases the upper limit
Reference potential, which is known, can't detect burr, to determine the upward peak of burr；Or, be upper limit reference current potential in the reference potential,
And in the case where burr is not detected, described control unit reduces the upper limit reference current potential until detecting burr, with determination
The upward peak of burr.
Optionally, described control unit determines whether adjusting parameter by the electric signal to determine the peak value of burr, wraps
Include: in the case where the reference potential is lower limit reference current potential and detects burr, described control unit reduces the lower limit
Reference potential, which is known, can't detect burr, to determine the lower peak value of burr；Or, be lower limit reference current potential in the reference potential,
And in the case where burr is not detected, described control unit increases the lower limit reference current potential until detecting burr, with determination
The lower peak value of burr.
Optionally, in control unit to before exporting reference potential with detection circuit, the method also includes: according to be measured
The load of the running parameter adjustment tunable load configuration circuit of electronic equipment is to be arranged present load.
Through the invention, to detection DC power supply stability device power after, control unit to control unit electricity
The detection circuit of connection exports reference potential；Detection circuit feeds back electric signal to control unit, wherein electric signal, which is used to indicate, is
It is no to detect burr；Tunable load configuration circuit, for the load of equipment to be arranged according to the running parameter of electronic equipment to be measured；It can
See, by configuration load circuit, the environment of analog power work can really detect the quality of power supply, and then by whether
It detects that the mode of burr improves the accuracy of detection, often occurs because of power adaptation in the related technology to solve
Device is unstable and causes to be powered equipment operation irregularity or exceeded problem.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the equipment of detection DC power supply stability according to an embodiment of the present invention；
Fig. 2 is the circuit diagram of tunable load configuration circuit according to an embodiment of the present invention；
Fig. 3 is the circuit diagram of detection circuit according to an embodiment of the present invention；
Fig. 4 is the optional structure diagram one of the equipment of detection DC power supply stability according to embodiments of the present invention；
Fig. 5 is the circuit diagram of sample circuit according to an embodiment of the present invention；
Fig. 6 is the optional structure diagram two of the equipment of detection DC power supply stability according to embodiments of the present invention；
Fig. 7 is the method flow diagram of detection DC power supply stability according to embodiments of the present invention.
Specific embodiment
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
Embodiments herein provides a kind of equipment for detecting DC power supply stability, and Fig. 1 is to implement according to the present invention
The structural schematic diagram of the equipment of the detection DC power supply stability of example, as shown in Figure 1, the equipment 11 includes: tunable load configuration
Circuit 12, detection circuit 13 and control unit 14；Wherein,
After the equipment 11 to detection DC power supply stability powers on, control unit 14 is to being electrically connected with control unit 14
Detection circuit 13 exports reference potential；
Detection circuit 13 feeds back electric signal to control unit 14, wherein electric signal is used to indicate whether to detect burr；
Tunable load configuration circuit 12, for the load of equipment to be arranged according to the running parameter of electronic equipment to be measured.
Optionally, tunable load configuration circuit 12 includes: multiple sub- load configuration circuits；Wherein, each height load is matched
Circuits include a switch, a capacitor and a resistance；The both ends of capacitor are electrically connected with switch first end and second end respectively
It connects, the third end connection of resistance one end and switch, other end ground connection, the 4th end of switch connects to power supply；Specifically component
Connection relationship is as shown in Figure 2.
Optionally, detection circuit 13 is made of two comparators, and specifically component linking relationship is as shown in Figure 3.
Optionally, the equipment 11 of the detection DC power supply stability in the application further include: sample circuit 15；Such as Fig. 4 institute
Show, the input terminal of sample circuit 15 is electrically connected with tunable load configuration circuit 12, the output end and detection circuit of sample circuit 15
13 electrical connections, the frequency voltage components for acquisition testing circuit.
Wherein, sample circuit is by two concatenated resistance, two concatenated capacitors, two concatenated rectifier diodes and
One follower composition；Wherein, concatenated resistance, concatenated capacitor and concatenated rectifier diode respectively with follower simultaneously
Connection；Wherein, specifically component connection relationship is as shown in Figure 5
Optionally, as shown in fig. 6, the equipment 11 of the detection DC power supply stability in the application further include: filter circuit
16 and voltage regulator circuit 17；Wherein,
16 one end of filter circuit connects to power supply, and one end is connect with voltage regulator circuit, for being filtered to the voltage of input；
17 one end of voltage regulator circuit is connect with filter circuit, and one end is connect with control unit, for exporting burning voltage to control unit.
Present invention also provides a kind of methods for detecting DC power supply stability, and Fig. 7 is inspection according to an embodiment of the present invention
The method flow diagram for surveying DC power supply stability, as shown in fig. 7, the step of this method includes:
Step S702, after the device power to detection DC power supply stability, the equipment of detection DC power supply stability
In control unit to detection circuit export reference potential；
Step S704, detection circuit feed back electric signal to control unit, wherein electric signal is used to indicate whether to detect hair
Thorn；
Step S706, control unit determine whether adjusting parameter by electric signal to determine the peak value of burr.
Wherein, determine whether adjusting parameter with true by electric signal the control unit being related in above-mentioned steps S706
The mode for determining the peak value of burr, specifically may is that
Step S706-11, in the case where reference potential is upper limit reference current potential and detects burr, control unit liter
High upper limit reference current potential, which is known, can't detect burr, to determine the upward peak of burr；Or, being upper limit reference electricity in reference potential
Position, and in the case where burr is not detected, control unit reduces upper limit reference current potential until detecting burr, to determine burr
Upward peak.
Step S706-12, in the case where reference potential is lower limit reference current potential and detects burr, control unit drop
Low limit reference potential, which is known, can't detect burr, to determine the lower peak value of burr；Or, being lower limit reference electricity in reference potential
Position, and in the case where burr is not detected, control unit increases lower limit reference current potential until detecting burr, to determine burr
Lower peak value.
It should be noted that the method for the present embodiment is also in control unit to before exporting reference potential with detection circuit
It include: that the load of tunable load configuration circuit is adjusted so that present load is arranged according to the running parameter of electronic equipment to be measured.
It is described in greater detail below with reference to the optional embodiment of the application；
This optional embodiment provides the DC power supply stability detector to electronic equipment, and the device is mainly by being used for
4 road tunable load configuration circuits of analog power working environment, are used for the voltage collection circuit that can acquire frequency voltage components
Detect burr dual threshold voltage detecting circuit, for system control and logical operation control unit and be used for outputting standard
The filter circuit and voltage regulator circuit of stabilized power supply are constituted.Based on this, it is as follows that Detection of Stability mode is carried out to DC power supply:
Firstly, plugging tested adapter, voltage regulator circuit has power supply output, and control unit powers on；
In turn, according to the parameter for wanting matched electronic equipment, such as maximum operating currenbt or maximum service rating etc. are adjusted
Circuit, the load circuit of configurations match, as shown in Fig. 2.Wherein, sample circuit is made of R5, R6, C5, C6, D1, D2, U1,
As shown in Fig. 4.R5, R6 can change the size of sampled voltage for dividing by adjusting dividing ratios；D1, D2 are prevented
Electric moment beats electrical injuries circuit and electrostatic is clamped；U1 is that a follower plays the role of matching impedance, when low frequency
Amplifier interpolar has very big impedance, but because of parasitic capacitance, when frequency rises, interpolar capacitive reactance decline will lead to input
Impedance decline, the effect of C5, C6 are exactly the capacitor value for increasing interelectrode capacity, increase input impedance, such sample circuit
Acquire high-frequency signal.
In addition, detection circuit is made of two-way comparator, as shown in figure 3, passing through the reference potential exported with control unit
It makes comparisons, detects the peak-to-peak value of power supply burr；
It should be noted that the process of detection is that the closed-loop system being made of control unit and detection circuit is controlling list
After member output upper limit reference current potential, whether detection circuit feedback detects burr, if detected, judges whether it is erroneous judgement, it
Adjusting parameter increases reference potential afterwards, continues to test, until reference potential is more than the upper limit value peak of setting or is detected not
To burr, so that it may obtain the upward peak of burr；If instead not detecting that burr just reduces reference potential, until reference electricity
Position is more than the upper limit value minimum of setting or detects that burr can be obtained by the upward peak of burr.
Lower limit reference voltage CL Compare Logic is similar therewith, i.e., after control unit bottoming reference potential, detection electricity
Whether road feedback detects burr, if detected, judges whether it is erroneous judgement, and adjusting parameter reduces reference potential later, continues
Detection, until reference potential is more than the lower limit value minimum of setting or can't detect burr, so that it may obtain the lower peak of burr
Value；If instead not detecting that burr just increases reference potential, until reference potential be more than setting lower limit value peak or
Person detects that burr can be obtained by the lower peak value of burr.
The quality that power supply can be represented based on this obtained peak-to-peak value, if not being powered in equipment power standard
It is exceeded or hot etc. because of operation irregularity caused by interfering to may cause EMC, serious can burn is powered equipment.
As it can be seen that, by configuration load circuit, the environment of analog power work can in the optional embodiment of the application
Really to detect the quality of power supply, to improve the accuracy of detection；In addition, the DAC offer one by control unit is high-precision
The dynamic reference current potential of degree carries out method detection by algorithm, increases the precision and stability of detection；And the sampling in the application
Circuit can detecte high fdrequency component, improve the range of detection.
Therefore, by the optional embodiment of the application, the range of detection is improved, can detecte the high frequency of MHz or more
Component interference；Due to the accurate of reference potential and stablize, the precision of detection can achieve mV grades and reliability is mentioned
It rises；And the environment that real work is simulated by increasing load configuration improves the practicability of detection；It is examined by control unit closed-loop control
Survey the efficiency and accuracy for improving detection.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.It is all within principle of the invention, it is made it is any modification, etc.
With replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of equipment for detecting DC power supply stability characterized by comprising tunable load configuration circuit, detection circuit
And control unit；Wherein,
After the device power to the detection DC power supply stability, described control unit is to being electrically connected with the control unit
Detection circuit export reference potential；
The detection circuit feeds back electric signal to described control unit, wherein the electric signal is used to indicate whether to detect hair
Thorn；
The tunable load configuration circuit, for the load of the equipment to be arranged according to the running parameter of electronic equipment to be measured.
2. the equipment of detection DC power supply stability according to claim 1, which is characterized in that the tunable load configuration
Circuit includes: multiple sub- load configuration circuits；Wherein, each sub- load configuration circuit includes a switch, a capacitor and
One resistance；The both ends of the capacitor are electrically connected with the first end and second end of the switch respectively, described resistance one end and institute
The third end connection of switch is stated, other end ground connection, the 4th end of the switch connects to power supply.
3. the equipment of detection DC power supply stability according to claim 1, which is characterized in that the detection circuit is by two
A comparator composition.
4. the equipment of detection DC power supply stability according to claim 1, which is characterized in that further include: sample circuit；
The input terminal of the sample circuit is electrically connected with the tunable load configuration circuit, the output end of the sample circuit and institute
Detection circuit electrical connection is stated, for acquiring the frequency voltage components of the detection circuit.
5. the equipment of detection DC power supply stability according to claim 4, which is characterized in that the sample circuit is by two
A concatenated resistance, two concatenated capacitors, two concatenated rectifier diodes and a follower composition；Wherein, it connects
Resistance, concatenated capacitor and concatenated rectifier diode are in parallel with the follower respectively.
6. the equipment of detection DC power supply stability according to claim 1, which is characterized in that further include: filter circuit
And voltage regulator circuit；
Described filter circuit one end connects to power supply, and one end is connect with the voltage regulator circuit, for filtering to the voltage of input
Wave；
Described voltage regulator circuit one end is connect with the filter circuit, and one end is connect with described control unit, stablizes electricity for exporting
It is pressed onto described control unit.
7. a kind of method for detecting DC power supply stability characterized by comprising
Control list after the device power to detection DC power supply stability, in the equipment of the detection DC power supply stability
Member exports reference potential to detection circuit；
The detection circuit feeds back electric signal to described control unit, wherein the electric signal is used to indicate whether to detect hair
Thorn；
Described control unit determines whether adjusting parameter by the electric signal to determine the peak value of burr.
8. the method according to the description of claim 7 is characterized in that described control unit determines whether to adjust by the electric signal
Whole parameter is to determine the peak value of burr, comprising:
In the case where the reference potential is upper limit reference current potential and detects burr, described control unit is increased on described
Limit reference potential, which is known, can't detect burr, to determine the upward peak of burr；Or,
In the case where the reference potential is upper limit reference current potential and burr is not detected, described in described control unit reduction
Upper limit reference current potential is until detecting burr, to determine the upward peak of burr.
9. the method according to the description of claim 7 is characterized in that described control unit determines whether to adjust by the electric signal
Whole parameter is to determine the peak value of burr, comprising:
In the case where the reference potential is lower limit reference current potential and detects burr, under described control unit reduction is described
Limit reference potential, which is known, can't detect burr, to determine the lower peak value of burr；Or,
In the case where the reference potential is lower limit reference current potential and burr is not detected, described in described control unit raising
Lower limit reference current potential is until detecting burr, to determine the lower peak value of burr.
10. the method according to the description of claim 7 is characterized in that exporting reference potential to detection circuit in control unit
Before, the method also includes:
The load of tunable load configuration circuit is adjusted according to the running parameter of electronic equipment to be measured present load is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910636857.5A CN110208722A (en) | 2019-07-15 | 2019-07-15 | Detect the device and method thereof of DC power supply stability |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910636857.5A CN110208722A (en) | 2019-07-15 | 2019-07-15 | Detect the device and method thereof of DC power supply stability |
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