CN109765500A - A kind of power supply analog machine and power supply analogy method - Google Patents
A kind of power supply analog machine and power supply analogy method Download PDFInfo
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Abstract
The embodiment of the present invention provides a kind of power supply analog machine and power supply analogy method, and the test power supply branch in power supply analog machine includes converting unit and exception control unit, and converting unit one end is connect with power supply, and the receiving end of the other end and measurement equipment connects；The controlled end of converting unit is connect with exception control unit, and when receiving exception control unit output effectively test enable signal, the abnormal voltage to measurement equipment output different from voltage rating carries out abnormality test to measurement equipment.The power supply analog machine can replace the tested power supply of measurement equipment to be powered to measurement equipment, when needing to carry out abnormality test to measurement equipment, export the abnormal voltage different from tested source nominal voltage, to make measurement equipment expose the problem of will appear in abnormity of power supply, it enables the production designer of equipment that can propose corresponding solution ahead of time for these problems, and then allows equipment that can be subjected to the test of abnormity of power supply in user's service stage.
Description
Technical field
The present invention relates to electronic technology field more particularly to a kind of power supply analog machine and power supply analogy methods.
Background technique
It is rapid with ICT (Information Communications Technology, Information and Communication Technology) technology
Development, higher and higher to the performance requirement of communication network hardware device, this makes in electronic system design, the working frequency of system
Higher and higher, the density of the integrated device on PCB (Printed Circuit Board, printed circuit board) unit area is more next
It is bigger.Other than the processing capacity of high speed, in the electronic device, reliable and stable power supply is also equipment superperformance
A kind of guarantee.Design for pcb board level power supply, other than being required to correctly provide stable power supply, die terminals pair
The processing capacity of power supply also directly decides whether system can be stablized, reliably work.
Currently, the power supply design of plate grade chip is main or combines chip handbook, ideally gone in power supply output
Meet the job requirement of chip, less consideration power supply output abnormality situation.But in actual conditions, in a complicated hardware system
In, power supply is not completely preferably that the voltage provided can be with external environment, input signal or the variation for loading itself
And change, transient voltage is exactly one of common problem.When the abnormity of power supply situations such as transient voltage occur, electronic equipment
In chip be likely to the problem of can not work normally, can work normally be to influence very important one of its performance
Factor.For the electronic product of engineer application has been put into, when there is chance failure because of abnormity of power supply, because means are limited,
Positioning is more difficult, therefore, it is preferable to processing mode be that can be positioned in the design production phase of electronic equipment and solve electricity
The various problems that sub- equipment is likely to occur in abnormity of power supply.Accordingly, it is now desired to which providing a kind of scheme carrys out simulation electronic
The various abnormity of power supply scenes that equipment is faced in service stage, so that it is determined that electronic equipment is likely to occur under abnormity of power supply scene
The problem of, solution is provided to these problems convenient for subsequent.
Summary of the invention
Power supply analog machine provided in an embodiment of the present invention and power supply analogy method, mainly solving the technical problems that: it mentions
For a kind of power supply modeling scheme, to the various exceptions that analog power is likely to occur while to the offer power supply of measurement equipment
Situation solves to facilitate positioning measurement equipment possible problems faced in abnormity of power supply in the prior art in electronic equipment
Production phase is concerned only with its various problem occurred in power supply ideal, and ignores its work under the driving of non-ideal power supply
Situation, so that user experiences bad problem in actual use.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of power supply analog machine, including test power supply branch,
The test power supply branch includes converting unit and exception control unit；One end of the converting unit is connect with power supply,
Receive the power supply of the power supply, the receiving end connection of the other end and measurement equipment, the voltage for providing power supply
It is converted into measurement equipment after the voltage rating of tested power supply powering to the measurement equipment；The controlled end of the converting unit with
The exception control unit connection, when receiving the exception control unit output effectively test enable signal, Xiang Suoshu
Measurement equipment exports the abnormal voltage different from the voltage rating to measurement equipment progress abnormality test.
The embodiment of the present invention also provides a kind of power supply analogy method, comprising:
It controls the voltage that power supply analog machine as described above provides power supply and is converted into tested power supply in measurement equipment
Voltage rating after to the measurement equipment power；
When needing to carry out abnormality test to the measurement equipment, the power supply analog machine is controlled to the measurement equipment
Export the abnormal voltage different from the voltage rating.
The embodiment of the present invention also provides a kind of computer storage medium, and the computer-readable recording medium storage has one
Or multiple programs, one or more of programs can be executed by one or more processor, it is as described above to realize
The step of power supply analogy method.
The beneficial effects of the present invention are:
The power supply analog machine and power supply analogy method provided according to embodiments of the present invention includes surveying in power supply analog machine
Examination power supply branch, test power supply branch include converting unit and exception control unit, and one end of converting unit and power supply connect
It connects, receives the power supply of power supply, the receiving end connection of the other end and measurement equipment, the voltage for providing power supply turns
It changes into measurement equipment and powers after the voltage rating of tested power supply to measurement equipment；The controlled end and exception control list of converting unit
Member connection is exported to measurement equipment different from specified electricity when receiving exception control unit output effectively test enable signal
The abnormal voltage of pressure carries out abnormality test to measurement equipment.Power supply analog machine provided in this embodiment, instead of measurement equipment
Tested power supply is powered to measurement equipment, when needing to carry out abnormality test to measurement equipment, is exported different from tested electricity
The abnormal voltage of source voltage rating enables equipment so that measurement equipment be made to expose the problem of will appear in abnormity of power supply
Production designer can propose corresponding solution ahead of time for these problems, and then allow equipment in user's service stage energy
It is enough subjected to the test of abnormity of power supply, reliable and stable service is provided for user, promotes user experience.
Other features of the invention and corresponding beneficial effect are described in the aft section of specification, and should be managed
Solution, at least partly beneficial effect is apparent from from the record in description of the invention.
Detailed description of the invention
Fig. 1 is a kind of circuit diagram for power supply analog machine that the embodiment of the present invention one provides；
Fig. 2 is the circuit diagram for another power supply analog machine that the embodiment of the present invention one provides；
Fig. 3 is the circuit diagram for another power supply analog machine that the embodiment of the present invention one provides；
Fig. 4 is the connection schematic diagram in Fig. 3 between power supply analog machine and measurement equipment；
Fig. 5 is a kind of flow chart of power supply analogy method provided by Embodiment 2 of the present invention；
Fig. 6 is a kind of circuit diagram of power supply analog machine provided by Embodiment 2 of the present invention；
Fig. 7 is the circuit diagram of another power supply analog machine provided by Embodiment 2 of the present invention；
Fig. 8 is the circuit diagram of another power supply analog machine provided by Embodiment 2 of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below by specific embodiment knot
Attached drawing is closed to be described in further detail the embodiment of the present invention.It should be appreciated that specific embodiment described herein is only used to
It explains the present invention, is not intended to limit the present invention.
Embodiment one:
In order to simulate working situation of the measurement equipment in abnormity of power supply, the present embodiment provides a kind of simulations of power supply
Equipment, the circuit diagram of the power supply analog machine provided referring to Figure 1 below:
Power supply analog machine 1 includes test power supply branch, includes converting unit 11 and abnormal control in test power supply branch
Unit 12 processed, wherein 11 one end of converting unit is connect with power supply, the receiving end connection of the other end and measurement equipment, thus
The voltage that power supply is provided is converted into measurement equipment after the voltage rating of tested power supply powering to measurement equipment.In this reality
It applies in example, it is not required that a measurement equipment is a fully functional equipment, is also possible to constitute in a complete device
A part, such as in an example of the present embodiment, measurement equipment is one piece of veneer in the network equipment.
It should be understood that demand of the different components to operating voltage is different in measurement equipment, therefore, it is same by
May exist one or more power supply in measurement equipment, it is assumed that some measurement equipment includes that a voltage rating is 2.5V
The power supply that power supply and a voltage rating are 3.3V.It is respectively to correspond to by these power supplys then when the measurement equipment works normally
Device be powered, specifically, by 2.5V power supply to operating voltage requirements be 2.5V device power, be by voltage rating
The power supply of 3.3V is the device power supply that operating voltage requirements are 3.3V.Now, in order to test these devices in abnormal voltage
Under environment, if will appear problem, or determine which kind of problem these devices will appear, need to allow the operating voltages of these devices
Some variations different from ideal situation are presented.So if necessary to determine that requiring operating voltage is that the device of 3.3V goes out in voltage
Working condition under existing suddenly change or other abnormal conditions, then should provide such a power supply analog machine: this power supply
Analog machine can simulate the power supply that voltage rating is 3.3V and power to corresponding device, and on the other hand, the simulation of this power supply is set
The standby voltage that oneself can be made to provide to device according to demand again is abnormal variation, so that abnormality test is carried out to device,
Such as the voltage that power supply analog machine provides falls.In the present embodiment, if being to operating voltage in measurement equipment
The device of 3.3V carries out abnormality test, actually allows power supply analog machine to be simulated on the basis of 3.3V voltage abnormal, because
This, in the present embodiment when the corresponding device of some power supply on to measurement equipment carries out abnormality test, just by the power supply be known as by
Survey power supply.For example, the voltage of the 3.3V is just known as tested electricity when carrying out abnormality test to the corresponding device of 3.3V power supply
Source；When carrying out abnormality test to the corresponding device of 2.5V power supply, the power supply of the 2.5V is just known as tested power supply.
Exception control unit 12 is a very crucial part in power supply analog machine 1 in the present embodiment, because abnormal
It is different to the voltage rating of the corresponding tested power supply of measurement equipment output or output that control unit 12, which can control converting unit 11,
In the abnormal voltage of voltage rating.So exception control unit 12 is connect with the controlled end 111 of converting unit 11, and to controlled
111 output test enable signal of end.When the test that the controlled end 111 of converting unit 11 receives from exception control unit 112
When enable signal is invalid, converting unit 11 will export the voltage rating of tested power supply to measurement equipment；When the test received
When enable signal is effective, converting unit 11 will export the abnormal voltage for being different from voltage rating to measurement equipment, to realize
Abnormality test to measurement equipment.
In some examples of the present embodiment, converting unit includes conversion circuit and abnormal analog circuit, such as Fig. 2 institute
Show: the conversion circuit 211 of 2 converting unit 21 of power supply analog machine is connect with power supply, the other end and abnormal analog circuit 212
Connection, abnormal analog circuit 212 are powered using the voltage that conversion circuit 211 is converted to measurement equipment.Exception control unit
22 can connect with the first controlled end on abnormal analog circuit 212.The voltage that conversion circuit 211 can provide power supply turns
Change the voltage rating of tested power supply into, and abnormal analog circuit 212 then makes for receiving effective test in the first controlled end
To measurement equipment output different from the abnormal voltage of voltage rating when energy signal.In the present embodiment, abnormal voltage can be less than volume
Constant voltage, the abnormal simulation that this abnormal voltage is less than voltage rating is known as Voltage Drop exception by us.In addition to this, abnormal
Voltage can also be greater than voltage rating, and correspondingly, this abnormal simulation is known as voltage swells exception by us.
In a kind of example of the present embodiment, power supply analog machine is used for the power supply scene that analog voltage falls, and
It is directly to drop into 0V from the voltage rating of tested power supply that this, which falls,.In this example, converting unit is still responsible for will be for
The voltage that power supply provides is converted into the corresponding voltage rating of tested power supply, and exception control unit then can be to abnormal analog circuit
Carry out " shutdown formula " control: abnormal to simulate when the test enable signal that exception control unit is issued to the first controlled end is effective
Circuit directly turns off, so that the electrical connection between conversion circuit and measurement equipment receiving end disconnects, namely provides to receiving end
The abnormal voltage of 0V.Realize that the scheme of " shutdown formula " control, such as in some schemes, can be using including but not there are a variety of
It is limited to disconnect switch, metal-oxide-semiconductor as abnormal analogue unit.
It may be veneer by the measurement equipment that power supply analog machine in this present embodiment is directed to, and veneer device is powering on
When, exist to electrifying timing sequence and requires, and using metal-oxide-semiconductor as abnormal analogue unit, if by opening metal-oxide-semiconductor
Measurement equipment is powered on to realize, then because of the control of metal-oxide-semiconductor itself, there are time delays.Because can be sent when needing to power on
It controls signal to drain to metal-oxide-semiconductor, but receive control signal from MOS drain electrode to need a period of time to metal-oxide-semiconductor opening.This this
Section the time for being very important for the measurement equipment that electrifying timing sequence requires, so, show in one kind of the present embodiment
In example, power supply analog machine can improve such case by other control modes:
Hypothetical anomaly analog circuit 212 is the device there are delay of control, then abnormal before powering on to measurement equipment
Analog circuit 212 keeps connection, to guarantee electrical communication between conversion circuit 211 and measurement equipment.Meanwhile exception control list
Member 22 can also be connect with the second controlled end on conversion circuit 211, and show power supply enable signal to the second controlled end, work as power supply
When enable signal is invalid, conversion circuit 211 will not be to abnormal 212 output rated voltage of analog circuit, only when the second controlled end
When the power supply enable signal received is effective, conversion circuit 211 can just be exported the voltage rating converted out to abnormal simulation electricity
Road 212.Since abnormal analog circuit 212 is to maintain connection when powering on to measurement equipment, it is converted when receiving
After the voltage rating that circuit 211 exports, directly the device in measurement equipment can be powered on using the voltage rating.Show at this
In example, exception control unit 22 is connect with the first controlled end, the second controlled end simultaneously.It is as shown in Figure 2:
Conversion circuit 211 include level-one conversion circuit 211a and second level conversion circuit 211b, level-one conversion circuit 211a with
Power supply connection, the voltage that power supply is provided is converted into medium voltage, and second level conversion circuit 211b then turns with level-one
The other end connection for changing circuit 211a, for medium voltage to be converted into the corresponding voltage rating of tested power supply.Wherein, second level turns
It changes on circuit 211b and is provided with the second controlled end, have in exception control unit 22 to the power supply enable signal that the second controlled end exports
When effect, second level conversion circuit 211b successfully exports the corresponding voltage rating of tested power supply to abnormal analog circuit 212.In exception
When the power supply enable signal that control unit 22 is exported to the second controlled end is invalid, second level conversion circuit 211b is to abnormal analog circuit
The voltage of 212 outputs is 0.
To measurement equipment power on completion after, when need to measurement equipment carry out abnormality test when, exception control unit
22 the first controlled end on abnormal analog circuit 21 sends effective test enable signal, so that abnormal analog circuit 212 is disconnected
It opens, to realize that Voltage Drop is tested.
In a kind of example of the present embodiment, abnormal analog circuit is metal-oxide-semiconductor, and exception control unit is programmable logic
Device.It is as shown in Figure 3: power supply analog machine 3 include level-one conversion circuit 311a, second level conversion circuit 311b, metal-oxide-semiconductor 312 with
And programmable logic device 32.32 one side of programmable logic device exports power supply enable signal to second level conversion circuit 311b,
On the other hand to the drain electrode input test enable signal in the form of a pulse of metal-oxide-semiconductor 312.It should be understood that invalid power supply
Enable signal is substantially exactly to control second level conversion circuit 311b output 0V voltage, and enable signal of effectively powering is then control
Earphone conversion circuit 311b is to the normal output rated voltage of metal-oxide-semiconductor 312.In the present embodiment, programmable logic device 32 can be with
Abnormality test is realized by exporting test enable signal to metal-oxide-semiconductor 312, and therefore, metal-oxide-semiconductor 312 is set to tested in the present embodiment
Standby output voltage values only there are two types of, one is the voltage rating of tested power supply, another kind be size be 0 abnormal voltage.
In this example, Voltage Drop is to drop into 0V, but those skilled in the art from the voltage rating of tested power supply
Member is not it should be understood that the control carried out to abnormal analogue unit when exception control unit is " turning off formula ", then Voltage Drop
It can be and drop into any one abnormal voltage value including 0V from voltage rating.
Programmable logic device 32 controls second level conversion circuit 311b and metal-oxide-semiconductor 312 according to simulation test parameter,
Simulation test parameter can be every time in abnormality test, the number powered extremely, and abnormal validity test when powering every time
The duration of enable signal.Simulation test parameter in programmable logic device 32 can be got from the CPU of terminal.Example
Such as, programmable logic device 32 is connect with terminal CPU by serial line interface, and receives what terminal CPU was inputted by serial line interface
Simulation test parameter.So tester can now at the terminal complete simulation test parameter setting, then controlling terminal will
The simulation test parameter being provided with is input in programmable logic device 32.In primary abnormal power supply, enable signal is tested
Lasting minimum time unit is n, such as 2us, then time width c can be arranged in tester according to demand, for example, 500.Most
The product of small chronomere n and time width c is that the duration of enable signal is tested in primary abnormal power supply.In the example
In the middle, the duration for testing enable signal is 500*2us, i.e. 1ms.In addition, tester can also be according to abnormality test
It needs the number m to power extremely in an abnormality test, such as the number of Voltage Drop or voltage swells is arranged.It is assumed that test
The m value of personnel's setting is 2, then in a drop test, programmable logic device 32 will control second level conversion circuit 311b
Fallen twice with metal-oxide-semiconductor 312, the duration fallen every time is 1ms.
Although abnormality test is to control metal-oxide-semiconductor 312 by programmable logic device 32 to realize, programmable logic device
Part 32 controls metal-oxide-semiconductor 312 as to when to realize abnormality test, then two ways can carry out triggering control in this way:
The first is connected with case in programmable logic device 32 in a kind of example of the present embodiment, so, it can
With by tester by sending effective or invalid test enable signal by key control exception control unit.
For example, programmable logic device 32 is connect with charactron, key etc. is shown in Fig. 3.Display charactron can be shown
Show the simulation test parameter of current setting, and key issues to programmable logic device 32 for tester and makes to can control letter
Number, when make to can control signal it is effective when, programmable logic device 32 is according to simulation test state modulator second level conversion circuit 311b
With metal-oxide-semiconductor 312.
By tester by being known as " triggering test mode manually " by the abnormality test of key control in the present embodiment, in addition to
Manually other than triggering test mode, the present embodiment also provides another test triggering mode:
Second, " automatic trigger test mode ": tester can be by serial line interface to programmable logic device 32
Trigger command is inputted, after programmable logic device 32 receives trigger command by serial line interface, then according to current mould
Quasi- test parameter control metal-oxide-semiconductor 312 carries out abnormality test.
It should be understood that needing first to guarantee on power supply analog machine before the device to measurement equipment powers on
Electricity is completed, and therefore, in a kind of example of the present embodiment, after the completion of needing that power supply analog machine 3 is first allowed to power on, is passing through electricity
Source analog machine issues power supply enable signal to second level conversion circuit 311b.In some examples of the present embodiment, power supply simulation
It is provided with enabled controlled end on the exception control unit of equipment, this enables controlled end enabled control terminal corresponding with tested power supply and connects
It connects.The enabled control terminal is originally used for whether corresponding tested power supply in control measurement equipment is powered to corresponding device, example
Such as the power supply of 3.3V in measurement equipment, measurement equipment has an enabled control terminal, dedicated for controlling the power supply of the 3.3V
Whether power to corresponding device.But when carrying out abnormality test, this can be enabled control terminal and tested power supply enable it is controlled
Connection between end disconnects, while the signal that makes can control for enabling control terminal output is input to the enabled of exception control unit
Controlled end.
For example, showing the connection schematic diagram in Fig. 3 between power supply analog machine 3 and measurement equipment 4 in Fig. 4: tested to set
It include a tested power supply on standby 4, which is originally used for powering for device 41, but now as will be to measurement equipment 4
Abnormality test is carried out, therefore, the power supply of device 41 is realized by power supply analog machine 3.Tested power supply has corresponding enabled
Control terminal 42, enabled 42 script of control terminal are connect with the enabled controlled end of tested power supply, and output makes can control signal original
This is used to control whether tested power supply to power to device 41.But because present tested power supply 40 is no longer powered to device 42,
Connection between enabled control terminal 42 and the enabled controlled end of tested power supply does not need to keep again yet.It in the present embodiment, can be with
Using the output of enabled control terminal 42 make to can control signal the programmable logic device 32 in power supply analog machine 3 is controlled
System, so, the enabled controlled end 321 of programmable logic device 32 is connect with the enabled control terminal 42 of tested power supply 40.
It is worth noting that, before measurement equipment is connect completion according to mode shown in Fig. 4 with power supply analog machine,
Power supply voltage cannot be provided to measurement equipment and power supply analog machine, namely cannot be connected to power supply and measurement equipment or
Power supply analog machine.After connection is completed, connection power supply and power supply analog machine and tested supplies voltages, so that
Power supply provides power supply voltage to measurement equipment and power supply analog machine, for example, in a kind of example of the present embodiment,
Power supply voltage value is 48V.At this point, power supply analog machine 3 can be powered on directly using the completion of power supply voltage.It should manage
Solution, although power supply also provides the voltage of 48V to measurement equipment at this time because the voltage can not directly to by
Device power supply on measurement equipment, therefore measurement equipment does not start power up.Only after power supply analog machine 3 powers on completion,
The corresponding enabled control terminal of the tested power supply of measurement equipment be sent on power supply analog machine enable controlled end make can control signal
It is just really effective, that is to say, that after power supply analog machine 3 powers on completion, enabled controlled end could " real " receive by
What measurement equipment issued effectively makes can control signal, and internal programmable logic device 32 could be sent out to second level conversion circuit 311b
It powers out enable signal.
Power supply analog machine provided in this embodiment, the tested power supply that can replace measurement equipment are supplied to measurement equipment
Electricity exports the abnormal voltage different from tested source nominal voltage when needing to carry out abnormality test to measurement equipment, thus
Measurement equipment is set to expose the problem of will appear in abnormity of power supply, enabling the production designer of equipment can be ahead of time this
A little problems propose corresponding solution.
Embodiment two:
The present embodiment provides a kind of power supply analogy method first, incorporated by reference to the flow chart shown in Fig. 5:
The voltage that S502, control power supply analog machine provide power supply is converted into the volume of tested power supply in measurement equipment
It powers after constant voltage to measurement equipment；
S504, need to measurement equipment carry out abnormality test when, control power supply analog machine to measurement equipment export it is different
In the abnormal voltage of voltage rating.
In general, the voltage that power supply provides is substantially 48V in electronic communication field.This voltage be not appropriate for
All devices power supply in measurement equipment, so, the voltage of 48V can be converted into 0.5~5V by power supply analog machine.In this implementation
In example, it can control power supply analog machine and converted using voltage order one, can also be turned using voltage more than two-stage even two-stage
It changes.For example, being provided only with voltage order one conversion circuit in power supply analog machine, the electricity when directlying adopt voltage order one conversion
The voltage of 48V can be converted into the voltage rating of tested power supply in measurement equipment, such as 3.3V by voltage conversion circuit.Certainly,
It can control power supply analog machine to convert using two step voltages, even multilevel voltage is converted.Such as in a kind of example, power supply
Analog machine includes the conversion of two step voltages, wherein the voltage of 48V is converted into medium voltage 12V by level-one conversion circuit, and second level
The medium voltage of 12V can be then converted into the voltage rating 3.3V of tested power supply by conversion circuit.
Optionally, the structure of power supply analog machine used in power supply analogy method is referred to Jie of previous embodiment
It continues.In addition to this, power supply analog machine also can have other structures.For example, a kind of power supply simulation provided in this embodiment is set
It is standby:
In aforementioned exemplary, power supply analog machine only includes test power supply branch, and the present embodiment other
In some examples, power supply analog machine may include N number of test power supply branch, and wherein N is more than or equal to 2.Each test power supply branch
When the test enable signal received is invalid, the output voltage exported to corresponding measurement equipment can be equal on road, can also be with
There are the output voltage of at least two test power supply branches is unequal.For example, in an example of the present embodiment, power supply mould
Proposing standby includes 3 tests power supply branches, these three tests power branches when the test enable signal being respectively received is invalid,
The output voltage for exporting 2.5V is powered to corresponding measurement equipment.In this case, a power supply analog machine can
Abnormality test is carried out with tested power supply identical to multiple measurement equipments simultaneously, for example, allowing three of power supply analog machine to test
Power supply branch exports the output voltage of 2.5V, while testing on three pieces of veneers 2.5 tested power supply.
In other examples of the present embodiment, power supply analog machine has two or more tests power supply branch
When, wherein can be at least unequal there are two output voltage of the power supply branch when test enable signal is invalid is tested.Namely
It says, wherein at least two test power supply branch is directed to the different tested power supply of voltage rating.As shown in fig. 6, power supply mould
Proposing standby 6 includes that 3 tests are powered branches, be respectively the first test power supply branch 60a, the second test power branch 60b and
Third test power supply branch 60c.Wherein, when test enable signal is invalid, output voltage is the first test power supply branch 60a
0.5V；Second test power supply branch 60b is when test enable signal is invalid, output voltage 2.5V；And third test power supply branch
Output voltage of the road 60c in the case where testing enable signal invalid situation is but 3.3V.In this case, power supply analog machine 6 can
To replace multiple tested power supplys in measurement equipment to carry out abnormality test to device simultaneously, tested can also be set to multiple simultaneously
The standby different multiple tested power supplys of upper voltage rating are tested.
In above-mentioned example, respectively test power supply branch is testing the invalid feelings of enable signal in a power supply analog machine 6
Output voltage under condition is respectively 0.5V, 2.5V and 3.3V, but it will be appreciated by those skilled in the art that, in other examples or
Under other situations, power supply analog machine can export corresponding voltage according to testing requirement.In the present embodiment, power supply simulation is set
It include potential regulator in standby 6 converting unit, its adjustable place test power supply branch of potential regulator makes in test
Output voltage when energy invalidating signal.
It is noted that when including two or more tests power supply branch in power supply analog machine, each test power supply
Branch can be independent of one another, is independent of each other, can also be with common sparing device.For example, power supply analog machine 7 shown in Fig. 7 is worked as
In, same includes that 3 tests are powered branches, be respectively the first test power supply branch 70a, the second test power branch 70b and
Third test power supply branch 70c, these three share the same exception control unit for the two of them in electrical testing branch, are scheming
In 7, the first test power supply branch 70a, the second test power supply shared first exception control unit 72ab of branch 70b, and third
Test power supply branch then has individual third exception control unit 72c.In the example that Fig. 7 is provided, only there are two tests
Power supply branch shares identical exception control unit, but in other examples of the present embodiment, can allow in power supply analog machine
All test power supply branches share the same exception control unit.
Other than shared exception control unit, in some examples of the present embodiment, in each test power supply branch
At least two can also share the same level-one conversion circuit, refer to Fig. 8:
There are two test power supply branches for the tool of power supply analog machine 8, and specifically, power supply analog machine 8 includes level-one conversion electricity
Road 801, the first second level conversion circuit 802, the second second level conversion circuit 803, third second level conversion circuit 804, wherein level-one turns
The one end for changing circuit 801 is connect with power supply, receives the voltage of 48V.The other end of level-one conversion circuit 801 is respectively the same as first
Second level conversion circuit 802, the second second level conversion circuit 803 and third second level conversion circuit 804 connect, and convert to the first second level
Circuit 802, the second second level conversion circuit 803 and third second level conversion circuit 804 input the medium voltage of 12V.Wherein, first
Second level conversion circuit 802 and the second second level conversion circuit 803 have a paired potentiometer respectively, for the first second level
The output voltage of conversion circuit 802 and the second second level conversion circuit 803 is adjusted.First second level conversion circuit 802 is in correspondence
Under the conciliation of potentiometer, medium voltage 12V can be converted into 2V voltage input below to the first metal-oxide-semiconductor being attached thereto
805；Medium voltage 12V can be transformed between 2~5V by the second second level conversion circuit 803 under the conciliation of corresponding potentiometer,
And the voltage value is inputed to the second metal-oxide-semiconductor 806 being attached thereto.First second level conversion circuit 802 and the second second level conversion electricity
Road 803 is belonging respectively to the first test power supply branch and the second test power supply branch, but third second level conversion circuit 804 is the same as the one or two
Grade conversion circuit 802 and the second second level conversion circuit 803 are different, it is simultaneously not belonging to test power supply branch, also do not match therewith
Pair potentiometer.The effect of third second level conversion circuit 804 is for the medium voltage of 12V to be converted into be programmable logic
The voltage that device 807 and central processing unit 808 are powered, this voltage value can be 1.2V, be also possible to 3.3V.It should be understood that
, the operating voltage of programmable logic device 807 and central processing unit 808 can also provide by other means, and unlimited
In the scheme that Fig. 8 is provided.
In the power supply analog machine 8 shown in Fig. 8, central processing unit 808 and programmable logic device 807 pass through local
The simulation test parameter received by serial ports can be handed down to programmable logic by bus interface connection, central processing unit 808
Device 807.Programmable logic device 807 can be connect with the enabled control terminal of power supply tested in measurement equipment, receive enabled control
What end processed was sent makes to can control signal.After power supply analog machine 8 powers on completion, enabled control terminal is issued to enabled controlled end
Make can control signal and come into force, the programmable logic device 807 in power supply analog machine 8 will be to some or whole second level conversions
Circuit issues effective power supply enable signal, it is assumed that each test power supply branch can be same in power supply analog machine 8 in the present embodiment
When work, then since the original state of each metal-oxide-semiconductor is closure, so, when the corresponding second level conversion tested in power supply branch
After circuit receives power supply enable signal, it will the voltage rating of the corresponding tested power supply of output carries out the device in measurement equipment
It powers on.
After powering on completion, power supply analog machine supplies device corresponding in measurement equipment with corresponding voltage rating
Electricity, until programmable logic device 807 receives the trigger command of triggering abnormality test by local bus interface, or by pressing
After key 809 receives the triggering command that tester triggers manually, according to simulation test state modulator the first second level conversion circuit
802 and first metal-oxide-semiconductor 805 simulate load voltage value 2V tested power supply below Voltage Drop, or control the second second level
The Voltage Drop of the tested power supply of conversion circuit 803 and the second metal-oxide-semiconductor 806 simulation load voltage value between 2V~5V.It is another
Aspect, due to the also external digital display tube 810 of programmable logic device 807, programmable logic device 807 can control
Digital display tube 810 processed shows current simulation test parameter, facilitates tester to be determined according to display information current
The parameters of abnormality test.
Power supply analogy method provided in this embodiment, by control power supply analog machine in general to measurement equipment
The voltage rating of tested power supply is exported, and when needing to carry out abnormality test, control power supply analog machine carries out measurement equipment
Abnormal power supply is set to tested in time so as to understand situation of the measurement equipment work under abnormal voltage convenient for tester
The standby problem under abnormal power supply proposes solution, avoids these problems in the exposure of user's service stage, influences user experience
The problem of.It should be understood that above-mentioned power supply analogy method can be implemented by hardware, computer program reality can also be passed through
It is existing, so, the present embodiment also provides a kind of computer for being stored with and the computer program of above-mentioned power supply analogy method may be implemented
Readable storage medium storing program for executing.The power supply analogy method stored in the computer readable storage medium is for one or more processors reading
And it executes.
Meanwhile power supply analog machine provided in this embodiment, it may include two even more test power supply branches, it can
In order to which multiple tested power supplys that tester is directed to a measurement equipment simultaneously carry out abnormality test, or simultaneously for more
Multiple tested power supplys of a measurement equipment carry out abnormality test, promote the efficiency of abnormality test.
Obviously, those skilled in the art should be understood that each module of the embodiments of the present invention or each step can be used
General computing device realizes that they can be concentrated on a single computing device, or be distributed in multiple computing device institutes
On the network of composition, optionally, they can be realized with the program code that computing device can perform, it is thus possible to by them
It is stored in computer storage medium (ROM/RAM, magnetic disk, CD) and is performed by computing device, and in some cases, it can
With the steps shown or described are performed in an order that is different from the one herein, or they are fabricated to each integrated circuit dies
Block, or single integrated circuit module is maked multiple modules or steps in them to realize.So the present invention does not limit
It is combined in any specific hardware and software.
The above content is combining specific embodiment to be further described to made by the embodiment of the present invention, cannot recognize
Fixed specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs,
Without departing from the inventive concept of the premise, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the present invention
Protection scope.
Claims (10)
1. a kind of power supply analog machine, which is characterized in that including test power supply branch, the test power supply branch includes that conversion is single
Member and exception control unit；One end of the converting unit is connect with power supply, receives the power supply of the power supply, another
End is connect with the receiving end of measurement equipment, and the voltage for providing power supply is converted into the volume of tested power supply in measurement equipment
It powers after constant voltage to the measurement equipment；The controlled end of the converting unit is connect with the exception control unit, is being received
To the exception control unit export validity test enable signal when, Xiang Suoshu measurement equipment export different from the voltage rating
Abnormal voltage to the measurement equipment carry out abnormality test.
2. power supply analog machine as described in claim 1, which is characterized in that the power supply analog machine includes that N number of test supplies
Electric branch, the N are more than or equal to 2, and at least two in each test power supply branch are invalid in corresponding test enable signal
When output voltage it is unequal.
3. power supply analog machine as claimed in claim 2, which is characterized in that wherein, in each test power supply branch extremely
Few two tests power supply branch shares the same exception control unit.
4. power supply analog machine as described in claim 1, which is characterized in that the exception control unit includes with described tested
The enabled controlled end of the corresponding enabled control terminal connection of power supply, the exception control unit are used to receive in the enabled controlled end
Effectively make after can control signal to what the measurement equipment issued, it is corresponding to control the converting unit output tested power supply
Voltage rating is measurement equipment power supply.
5. power supply analog machine according to any one of claims 1-4, which is characterized in that the converting unit includes conversion electricity
Road and abnormal analog circuit, described conversion circuit one end are connect with the power supply, the other end and the abnormal analog circuit
The conversion of power supply voltage to the voltage rating is realized in connection；It is described exception analog circuit output end with it is described tested
The receiving end of equipment connects；The controlled end of the converting unit include be arranged on the abnormal analog circuit it is first controlled
End, the exception control unit connect with first controlled end and send test enable signal, control to first controlled end
The abnormal analogue unit is made when test enable signal is effective to the measurement equipment output abnormality voltage.
6. power supply analog machine as claimed in claim 5, which is characterized in that the conversion circuit include level-one conversion circuit and
The output of second level conversion circuit, the level-one conversion circuit is connect with the input of the second level conversion circuit, the level-one conversion
Circuit is used to for the voltage that the power supply provides being converted into medium voltage, and the second level conversion circuit is used for the centre
Voltage is converted into the voltage rating；The controlled end of the converting unit further includes be arranged on the second level conversion circuit
Two controlled ends, the exception control unit are connect with second controlled end, and are needing to power on the measurement equipment
When to the second level conversion circuit export the effective power supply enable signal of invalid output.
7. power supply analog machine as claimed in claim 6, which is characterized in that the power supply analog machine includes at least two surveys
When examination power supply branch, at least two test power supply branches in each test power supply branch share the same level-one conversion electricity
Road.
8. power supply analog machine as claimed in claim 5, which is characterized in that the exception analog circuit is metal-oxide-semiconductor, described different
Normal control unit connect with the two the first controlled end being arranged on the metal-oxide-semiconductor, and is exported effectively to the metal-oxide-semiconductor
Test enable signal when, metal-oxide-semiconductor shutdown is controlled, with the abnormal voltage for being 0 to the measurement equipment output size.
9. power supply analog machine as claimed in claim 8, which is characterized in that the exception control unit is programmable logic device
Part, the programmable logic device are used for defeated to the abnormal analog circuit according to the simulation test parameter received from terminal
Enable signal is tested out, the simulation test parameter is used to indicate in each abnormality test, the number powered extremely, and
The duration of validity test enable signal when exception is powered every time.
10. a kind of power supply analogy method, comprising:
The voltage that control power supply analog machine as described in claim any one of 1-9 provides power supply is converted into measurement equipment
In tested power supply voltage rating after to the measurement equipment power；
When needing to carry out abnormality test to the measurement equipment, controls the power supply analog machine and exported to the measurement equipment
Different from the abnormal voltage of the voltage rating.
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| CN201711093197.8A CN109765500A (en) | 2017-11-08 | 2017-11-08 | A kind of power supply analog machine and power supply analogy method |
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| CN201711093197.8A CN109765500A (en) | 2017-11-08 | 2017-11-08 | A kind of power supply analog machine and power supply analogy method |
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