CN107390140A - The method of testing and equipment of power supply - Google Patents
The method of testing and equipment of power supply Download PDFInfo
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- CN107390140A CN107390140A CN201710602132.5A CN201710602132A CN107390140A CN 107390140 A CN107390140 A CN 107390140A CN 201710602132 A CN201710602132 A CN 201710602132A CN 107390140 A CN107390140 A CN 107390140A
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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 disclosure provides a kind of method of testing and equipment of power supply, and the method for testing of power supply includes：Power supply is connected by switching with tunable load；The resistance of tunable load is set according to the resistance of actual loading, the resistance of tunable load is no more than the resistance of actual loading；The output voltage for measuring power supply closes instantaneous minimum value in switch；When the magnitude of voltage measured is not less than actual loading normal work during required magnitude of voltage, configured information that out-put supply passes through test.The moment that the scheme that the disclosure is provided is changed by simulating actual loading working condition, the transient voltage of power supply output is tested, whether can quickly and easily determine the transient voltage of power supply output can ensure actual loading normal work.
Description
Technical field
This disclosure relates to electronic technology field, more particularly to the method for testing and equipment of power supply.
Background technology
Need to test alternative multiple power sources during power supply type selecting.Such as WIFI, LED driving are such loads, due to
Load may be frequently mutated, it is therefore desirable to more harsh test is done to power supply.
The content of the invention
The embodiment of the present disclosure provides the method for testing and equipment of power supply, and technical scheme is as follows：
According to the first aspect of the embodiment of the present disclosure, there is provided the method for testing of power supply, including：
Power supply is connected by switching with tunable load；
The resistance of tunable load is set according to the resistance of actual loading, the resistance of tunable load is no more than the resistance of actual loading
Value；
The output voltage for measuring power supply closes instantaneous minimum value in switch；
When the magnitude of voltage measured is not less than actual loading normal work during required magnitude of voltage, out-put supply passes through test
Configured information.
The program closes instantaneous power using the actual loading of tunable load simulation WIFI, LED driving etc. in switch
Connected with tunable load, power supply is transformed into heavy condition by Light Condition moment, occurs in working condition mutation immediate current
Very big spike, while the output voltage of power supply can be pulled low.
After the output voltage of power supply is pulled low, if output voltage is less than voltage required during actual loading normal work
Value, then it represents that the power supply can not drive actual loading normal work by unloaded or underloading mutation to heavily loaded moment, i.e., the power supply is not
Pass through test.If output voltage is not less than magnitude of voltage required during actual loading normal work, then it represents that the power supply can drive
Actual loading normal work, the i.e. power supply pass through test.
The moment that the scheme that the disclosure is provided is changed by simulating actual loading working condition, to the transient state of power supply output
Voltage is tested, and can quickly and easily be determined the transient voltage of power supply output and whether can be ensured actual loading normal work.
In one embodiment, after the configured information that out-put supply passes through test, in addition to：
When the magnitude of voltage measured belongs to the first interval, out-put supply closes instantaneous power output in switch；
Wherein, the minimum value of the first interval is not less than magnitude of voltage required during actual loading normal work, and first takes
The length for being worth section is the first preset value.
Under conditions of power supply is by test, if the magnitude of voltage measured belongs to the first interval, power supply output is represented
Transient voltage be equal to or more than and the power output of magnitude of voltage, now power supply required during close to actual loading normal work
As on the premise of actual loading normal work is ensured, the maximum transient power that can export, the transient power value represents
The maximum transient state load capacity of power supply.
In one embodiment, in addition to：When the magnitude of voltage measured is more than the maximum of the first interval, reduction can
The output voltage adjusted the resistance of load and remeasure power supply closes instantaneous minimum value until the magnitude of voltage measured falls in switch
Enter the first interval.
The magnitude of voltage measured is more than the maximum of the first interval, represents that the transient voltage of power supply output meets actual negative
Required magnitude of voltage and certain nargin be present when carrying normal work.Now reduce the resistance of tunable load, the wink of power supply output
State voltage is further dragged down until falling into the first interval, the transient power of now power supply output, is as ensureing reality
On the premise of loading normal work, the maximum transient power that can export, the transient power value represents the wink of power supply maximum
State load capacity.
In one embodiment, after switch closes, reduce the resistance of tunable load and measure the output voltage of power supply；
When the magnitude of voltage measured belongs to the second interval, the current power output of out-put supply；Wherein, the second value
The minimum value in section is not less than magnitude of voltage required during actual loading normal work, and the length of the second interval is default for second
Value.
After switch closure, load stabilization, the output voltage and electric current of power supply enter stable state.Now reduce the resistance of tunable load
Value causes the output voltage of power supply to be pulled low, and when output voltage belongs to the second interval, represents the stable state electricity of power supply output
Pressure is equal to or more than and required magnitude of voltage during close to actual loading normal work, and now the power output of power supply is and protected
On the premise of demonstrate,proving actual loading normal work, the maximum steady state power that can export, the steady state power value represents power supply most
Big stable state load capacity.
In one embodiment, power supply is included by the configured information of test：
The magnitude of voltage currently measured, the setting value of tunable load and the resistance of actual loading.
The magnitude of voltage currently measured is bigger, represents that the transient state load capacity of power supply is stronger.The setting value and reality of tunable load
The resistance difference of border load is bigger, represents that the transient state load capacity of power supply is stronger.Output above parameter is easy to tester to understand
The transient state load capacity of power supply.
According to the second aspect of the embodiment of the present disclosure, there is provided the test equipment of power supply, including：Link block, tunable load,
Switch, load regulation module, oscillograph, control module and output module；
Link block, for power supply to be connected by switching with tunable load；
Load regulation module, for setting the resistance of tunable load, the resistance of tunable load according to the resistance of actual loading
No more than the resistance of actual loading；
Oscillograph, the output voltage for measuring power supply close instantaneous minimum value in switch；
The required magnitude of voltage when control module determines that the magnitude of voltage that oscillograph measures is not less than actual loading normal work
When, configured information that test is passed through by output module out-put supply.
In one embodiment, when control module determines that the magnitude of voltage that oscillograph measures belongs to the first interval, lead to
Cross output module out-put supply and instantaneous power output is closed in switch；
Wherein, the minimum value of the first interval is not less than magnitude of voltage required during actual loading normal work, and first takes
The length for being worth section is the first preset value.
In one embodiment, when control module determines that the magnitude of voltage that oscillograph measures is more than the maximum of the first interval
During value,
Load regulation module reduces the resistance of tunable load, and the output voltage that oscillograph remeasures power supply closes in switch
Instantaneous minimum value determines that the magnitude of voltage that oscillograph measures falls into the first interval until control module.
In one embodiment, load regulation module, for after switch closes, reducing the resistance of tunable load；
Oscillograph, for after switch closes, measuring the output voltage of power supply；
When control module determines that the magnitude of voltage that oscillograph measures belongs to the second interval, electricity is exported by output module
The current power output in source；Wherein, the minimum value of the second interval is not less than voltage required during actual loading normal work
Value, the length of the second interval is the second preset value.
In one embodiment, control module is included by output module out-put supply by the configured information of test：When
Before the magnitude of voltage that measures, the setting value of tunable load and the resistance of actual loading.
It should be appreciated that the general description and following detailed description of the above are only exemplary and explanatory, not
The disclosure can be limited.
Brief description of the drawings
Accompanying drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the disclosure
Example, and be used to together with specification to explain the principle of the disclosure.
Fig. 1 is that the test philosophy according to an exemplary application scene illustrates schematic diagram.
Fig. 2 is the flow chart of the method for testing of the power supply according to an exemplary embodiment.
Fig. 3 is the block diagram of the electronic equipment according to an exemplary embodiment.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the disclosure.On the contrary, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects be described in detail in claims, the disclosure.
WIFI or LED driving even loads, working condition are the electricity in mutation periodically by unloaded or underloading mutation to heavy duty
Very big spike occurs in stream, therefore the transient state load capacity test to power supply is very harsh, it is desirable to has very fast
Dynamic response capability.The output of power supply when being supported on periodic breaks can be quickly assessed it would therefore be desirable to have a kind of method of testing
Voltage pulsation situation.Required voltage when if normal work is also higher than loaded after Voltage Drop, that can illustrate that power supply exports
Transient voltage being capable of proof load normal work.
Fig. 1 is the explanation schematic diagram of test philosophy, and the positive pole of power supply 101 passes through switch 102 and the positive pole of adjustable electronic load 103
Connection, the negative pole of power supply 101 are connected with the negative pole of adjustable electronic load 103, and Fig. 1 show the situation of negative pole ground connection.The closure of switch 102
Moment adjustable electronic load 103 is connected with power supply 101, and spike, while power supply occurs in the electric current between power supply 101 and electronic load
101 output voltages are pulled low.Set test point to connect the probe positive pole of oscillograph 104 between power supply 101 and switch 102, show
The probe negative pole of ripple device 104 is connected with the negative pole of power supply 101, and the output voltage of power supply 101 is obtained by the measurement of oscillograph 104.
Fig. 2 is the flow chart of the method for testing of the power supply according to an exemplary embodiment, and this method is applied to power supply
Test equipment, including step 201-206：
In step 201, power supply is connected by switching with tunable load.
Power supply is DC output power, such as AC-DC power module or DC-DC power module.Tunable load can be
Variable resistance, switch can be the mechanical switch of relay etc., or the electronic switch of MOS switch etc..One
In individual embodiment, switch as the time relay.After the on-off cycle of setting time relay, the access of tunable load quilt periodicity,
Disconnect the process constantly changed with simulation no-load and heavy condition.
In step 202, the resistance of tunable load is set according to the resistance of actual loading, the resistance of tunable load is no more than
The resistance of actual loading.
Actual loading refers to the load that may undergo mutation of WIFI, LED driving constant power, the resistance of actual loading can by with
Family is manually entered the test equipment of power supply, and then the test equipment of power supply sets the resistance of tunable load according to input value, makes it
Resistance is no more than the resistance of actual loading, such as is set to the 100% of actual loading resistance, 95% etc..
The resistance of tunable load is reset in subsequent step if desired, can further reduce it according to default step-length
Resistance, for example resistance reduces 5% during every last reset.
In step 203, the output voltage for measuring power supply closes instantaneous minimum value in switch.
In one embodiment, test point is set between power supply and switch, connects the probe positive pole of oscillograph, oscillograph
Probe negative pole be connected with power cathode.The triggering level of the trailing edge of oscillograph is set, when the output voltage of power supply is pulled low
When below to the triggering level, oscillograph captures power supply transient voltage waveform, and the waveform minimum point voltage is the defeated of power supply
Go out the minimum value that voltage closes instantaneous minimum value, i.e. transient voltage in switch, with VmRepresent.
In step 204, during the magnitude of voltage required when the magnitude of voltage measured is not less than actual loading normal work, output
The configured information that power supply passes through test.
Magnitude of voltage required during normal work is loaded with VeRepresent, Vm≥VeRepresent power supply output voltage be pulled low after its
Output voltage remains able to ensure actual loading normal work, the configured information that now out-put supply passes through test.
If Vm＜ Ve, then it represents that the output voltage of power supply cannot be guaranteed actual loading normal work after being pulled low, in other words
Power supply can not drive actual loading normal work by unloaded or underloading mutation to heavily loaded moment, illustrate the power supply not by testing,
Now exportable power supply does not pass through the configured information of test.
In one embodiment, the V that power supply includes currently measuring by the configured information of testmValue, tunable load are set
Definite value and the resistance of actual loading.
VmValue is bigger, represents that the transient state load capacity of power supply is stronger.The setting value of tunable load and the resistance of actual loading
Difference is bigger, represents that the transient state load capacity of power supply is stronger.Output above parameter is easy to the transient state band of tester's understanding power supply
Loading capability.Power supply not may also comprise above-mentioned parameter by the configured information of test.
The method of testing for the power supply that embodiment of the disclosure provides, utilize tunable load simulation WIFI, LED driving etc.
Actual loading, switch closure instantaneous power connected with tunable load, power supply is transformed into heavy condition by Light Condition moment.
The transient voltage minimum value of power supply, the transient state load capacity of power supply is represented, the value is bigger to represent that transient state load capacity is stronger.Should
Value is not less than magnitude of voltage required during actual loading normal work, represents that the output voltage of power supply is pulled low its rear output voltage still
Actual loading normal work can so be ensured, i.e., the power supply passes through test.The scheme that the disclosure is provided is by simulating actual negative
The moment of working condition change is carried, the transient voltage of power supply output is tested, can quickly and easily determine the wink of power supply output
Whether state voltage can ensure actual loading normal work.
It is determined that power supply by test after, follow-up optional step, including step 205 and step 206 can be continued executing with.
In step 205, the maximum transient power of measurement and out-put supply output.
The maximum transient power of power supply output, refer to ensureing Vm≥VeOn the premise of, switch closure instantaneous power institute energy
The maximum instantaneous power of output.
In one embodiment, an interval is set, referred to as the first interval, is denoted as [a, b].First value area
Between minimum value be not less than magnitude of voltage required during actual loading normal work, i.e. a >=Ve.Length (the b- of first interval
A) it is the first preset value.
If Vm∈ [a, b], then it represents that VmIt is equal to or more than and close to Ve, degree of closeness is depending on siding-to-siding block length (b-a)
Value, the value is smaller, Vm∈ [a, b] represents VmMore approach Ve。
VmThe power output V of power supply during ∈ [a, b]m 2/ R (R is the resistance of tunable load), it is to ensure that actual loading is normal
Work (Vm≥Ve) on the premise of, maximum transient power that power supply can export, it is maximum that the transient power value represents power supply
Transient state load capacity.VmThe test equipment output V of power supply during ∈ [a, b]m 2/ R value, it is easy to tester to understand the transient state of power supply
Load capacity.
After step 204, ifAnd Vm＞ b, represent VmMeet electricity required during actual loading normal work
Pressure value and certain nargin be present.The resistance of tunable load is now gradually reduced according to the step-length of preset value, then VmValue gradually
Gradually drag down.The resistance of each tunable load remeasures V when reducingmUntil VmValue when falling into [a, b], the test of power supply is set
Standby output Vm 2/ R value is the maximum transient power of power supply output.
In step 206, the maximum steady state power of measurement and out-put supply output.
After switch closure, power supply transient response process terminates, into stable state output procedure, the output voltage of power supply and negative
Carry power and keep stable.If constantly reducing the resistance of tunable load, the power output of power supply constantly increases, the stable state electricity of power supply
Pressure may be pulled low.
The steady state voltage of power supply is denoted as Vs, the maximum steady state power of power supply output refers to, is ensureing Vs≥VePremise
Under, switch the peak power that power supply can be output in stable state output procedure after closing.
In one embodiment, an interval is set, referred to as the second interval, is denoted as [c, d].Second value area
Between minimum value be not less than magnitude of voltage required during actual loading normal work, i.e. c >=Ve.Length (the d- of second interval
C) it is the second preset value.
Second interval and the first interval can be same sections, naturally it is also possible to it is two different sections,
The terminal in two sections does not associate independently each with siding-to-siding block length.
If Vs∈ [c, d], then it represents that VmIt is equal to or more than and close to Ve, degree of closeness is depending on siding-to-siding block length (d-c)
Value, the value is smaller, Vs∈ [c, d] represents VsMore approach Ve。
VsThe power output V of power supply during ∈ [c, d]s 2/ R (R is the resistance of tunable load), it is to ensure that actual loading is normal
Work (Vs≥Ve) on the premise of, maximum steady state power that power supply can export, it is maximum that the steady state power value represents power supply
Stable state load capacity.VsThe test equipment output V of power supply during ∈ [c, d]s 2/ R value, it is easy to tester to understand the stable state of power supply
Load capacity.
After switch closure power supply enters stable state output procedure, ifAnd Vs＞ d, represent VsMeet actual loading
Required magnitude of voltage and certain nargin be present during normal work.Now tunable load is gradually reduced according to the step-length of preset value
Resistance, then VsValue drag down gradually.The resistance of each tunable load remeasures V when reducingsUntil VsValue fall into [c,
D] when, the test equipment output V of power supplys 2/ R value is the maximum steady state power of power supply output.
The method of testing for the power supply that embodiment of the disclosure provides, the transient voltage of switch connection instantaneous power is tested, when
Transient voltage, which is not less than, then determines that power supply passes through test during voltage needed for actual loading normal work.In the bar that power supply passes through test
Further test obtains the maximum transient power of power supply output, maximum steady state power under part, is easy to tester quickly and easily
Transient state load capacity, stable state load capacity to power supply are assessed.
Following is disclosure apparatus embodiments, can be used for performing embodiments of the present disclosure.
Fig. 3 is the block diagram of the electronic equipment according to an exemplary embodiment, the equipment can by software, hardware or
Both persons' is implemented in combination with its some or all of function, for performing the survey of the power supply described in embodiment corresponding to Fig. 2
Method for testing.As shown in figure 3, electronic equipment 30 includes：
Link block 301, tunable load 302, switch 303, load regulation module 304, oscillograph 305, control module 306
And output module 307；
Link block 301, for power supply to be connected by switch 303 with tunable load 302；
Load regulation module 304, for setting the resistance of tunable load 302, tunable load according to the resistance of actual loading
302 resistance is no more than the resistance of actual loading；
Oscillograph 305, for measuring the output voltage of power supply in the instantaneous minimum value of the closure of switch 303；
It is required when control module 306 determines that the magnitude of voltage that oscillograph 305 measures is not less than actual loading normal work
During magnitude of voltage, configured information that test is passed through by the out-put supply of output module 307.
In one embodiment, when control module 306 determines that the magnitude of voltage that oscillograph 305 measures belongs to the first interval
When, by the out-put supply of output module 307 in the instantaneous power output of the closure of switch 303；
Wherein, the minimum value of the first interval is not less than magnitude of voltage required during actual loading normal work, and first takes
The length for being worth section is the first preset value.
In one embodiment, when control module 306 determines that the magnitude of voltage that oscillograph 305 measures is more than the first interval
Maximum when,
Load regulation module 304 reduces the resistance of tunable load 302, and oscillograph 305 remeasures the output voltage of power supply
In the instantaneous minimum value of the closure of switch 303 until control module 306 determines that the magnitude of voltage that oscillograph 305 measures falls into the first value
Section.
In one embodiment, load regulation module 304, for after the closure of switch 303, reducing tunable load 302
Resistance；
Oscillograph 305, for after the closure of switch 303, measuring the output voltage of power supply；
When control module 306 determines that the magnitude of voltage that oscillograph 305 measures belongs to the second interval, pass through output module
The current power output of 307 out-put supplies.
In one embodiment, the configured information bag that control module 306 passes through test by the out-put supply of output module 307
Include：The magnitude of voltage currently measured, the setting value of tunable load 302 and the resistance of actual loading.
The method of testing for the power supply that embodiment of the disclosure provides, the transient voltage of switch connection instantaneous power is tested, when
Transient voltage, which is not less than, then determines that power supply passes through test during voltage needed for actual loading normal work.In the bar that power supply passes through test
Further test obtains the maximum transient power of power supply output, maximum steady state power under part, is easy to tester quickly and easily
Transient state load capacity, stable state load capacity to power supply are assessed.
Those skilled in the art will readily occur to the disclosure its after considering specification and putting into practice disclosure disclosed herein
Its embodiment.The application is intended to any modification, purposes or the adaptations of the disclosure, these modifications, purposes or
Person's adaptations follow the general principle of the disclosure and including the undocumented common knowledges in the art of the disclosure
Or conventional techniques.Description and embodiments are considered only as exemplary, and the true scope of the disclosure and spirit are by following
Claim is pointed out.
It should be appreciated that the precision architecture that the disclosure is not limited to be described above and is shown in the drawings, and
And various modifications and changes can be being carried out without departing from the scope.The scope of the present disclosure is only limited by appended claim.
Claims (10)
- A kind of 1. method of testing of power supply, it is characterised in that including：Power supply is connected by switching with tunable load；The resistance of the tunable load is set according to the resistance of actual loading, the resistance of the tunable load is no more than the reality The resistance of load；The output voltage for measuring the power supply closes instantaneous minimum value in the switch；When the magnitude of voltage measured is not less than the actual loading normal work during required magnitude of voltage, exports the power supply and pass through The configured information of test.
- 2. according to the method for claim 1, it is characterised in that the output power supply by the configured information of test it Afterwards, in addition to：When the magnitude of voltage measured belongs to the first interval, export the power supply and close instantaneous output work in the switch Rate；Wherein, the minimum value of first interval is not less than magnitude of voltage required during the actual loading normal work, institute The length for stating the first interval is the first preset value.
- 3. according to the method for claim 2, it is characterised in that also include：When the magnitude of voltage measured is more than the maximum of first interval, reduce the resistance and again of the tunable load The output voltage for measuring the power supply closes instantaneous minimum value until the magnitude of voltage measured falls into described first in the switch Interval.
- 4. according to the method for claim 1, it is characterised in that also include：After the switch closure, reduce the resistance of the tunable load and measure the output voltage of the power supply；When the magnitude of voltage measured belongs to the second interval, the current power output of the power supply is exported；Wherein, described second The minimum value of interval is not less than magnitude of voltage required during the actual loading normal work, the length of second interval Spend for the second preset value.
- 5. according to the method for claim 1, it is characterised in that the power supply is included by the configured information of test：The resistance of the magnitude of voltage currently measured, the setting value of the tunable load and the actual loading.
- A kind of 6. test equipment of power supply, it is characterised in that including：Link block, tunable load, switch, load regulation module, Oscillograph, control module and output module；The link block, for power supply to be connected by the switch with the tunable load；The load regulation module, for setting the resistance of the tunable load, the adjustable negative according to the resistance of actual loading The resistance of load is no more than the resistance of the actual loading；The oscillograph, the output voltage for measuring the power supply close instantaneous minimum value in the switch；It is required when the control module determines that the magnitude of voltage that the oscillograph measures is not less than the actual loading normal work Magnitude of voltage when, the configured information that the power supply passes through test is exported by the output module.
- 7. equipment according to claim 6, it is characterised in thatWhen the control module determines that the magnitude of voltage that the oscillograph measures belongs to the first interval, pass through the output mould Block exports the power supply and closes instantaneous power output in the switch；Wherein, the minimum value of first interval is not less than magnitude of voltage required during the actual loading normal work, institute The length for stating the first interval is the first preset value.
- 8. equipment according to claim 7, it is characterised in thatWhen the control module determines that the magnitude of voltage that the oscillograph measures is more than the maximum of first interval,The load regulation module reduces the resistance of the tunable load, and the oscillograph remeasures the output electricity of the power supply It is pressed in the switch and closes instantaneous minimum value until the control module determines that the magnitude of voltage that the oscillograph measures falls into institute State the first interval.
- 9. equipment according to claim 6, it is characterised in thatThe load regulation module, for after the switch closure, reducing the resistance of the tunable load；The oscillograph, for after the switch closure, measuring the output voltage of the power supply；When the control module determines that the magnitude of voltage that the oscillograph measures belongs to the second interval, pass through the output mould Block exports the current power output of the power supply；Wherein, the minimum value of second interval is not less than magnitude of voltage required during the actual loading normal work, institute The length for stating the second interval is the second preset value.
- 10. equipment according to claim 6, it is characterised in thatThe control module exports the power supply by the output module to be included by the configured information of test：Currently measure The resistance of magnitude of voltage, the setting value of the tunable load and the actual loading.
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| CN110412484A (en) * | 2019-07-31 | 2019-11-05 | 昆山联滔电子有限公司 | Equipment power supply monitoring method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110412484A (en) * | 2019-07-31 | 2019-11-05 | 昆山联滔电子有限公司 | Equipment power supply monitoring method |
| CN112763787A (en) * | 2021-01-19 | 2021-05-07 | 天津市中环电子计算机有限公司 | Industrial computer voltage stability testing method |
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