CN117375120A - Power supply and working method thereof - Google Patents
Power supply and working method thereof Download PDFInfo
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- CN117375120A CN117375120A CN202311665882.9A CN202311665882A CN117375120A CN 117375120 A CN117375120 A CN 117375120A CN 202311665882 A CN202311665882 A CN 202311665882A CN 117375120 A CN117375120 A CN 117375120A
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- 238000012360 testing method Methods 0.000 claims abstract description 60
- 230000008569 process Effects 0.000 claims abstract description 12
- 230000001360 synchronised effect Effects 0.000 claims description 14
- 230000003247 decreasing effect Effects 0.000 claims description 12
- 230000006870 function Effects 0.000 description 18
- 238000001514 detection method Methods 0.000 description 6
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J4/00—Circuit arrangements for mains or distribution networks not specified as ac or dc
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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
- G01R31/003—Environmental or reliability tests
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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
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2851—Testing of integrated circuits [IC]
- G01R31/2855—Environmental, reliability or burn-in testing
- G01R31/2872—Environmental, reliability or burn-in testing related to electrical or environmental aspects, e.g. temperature, humidity, vibration, nuclear radiation
- G01R31/2879—Environmental, reliability or burn-in testing related to electrical or environmental aspects, e.g. temperature, humidity, vibration, nuclear radiation related to electrical aspects, e.g. to voltage or current supply or stimuli or to electrical loads
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- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The application relates to a power supply and a working method of the power supply, wherein the power supply comprises: the input end receives external electric energy; the setting circuit is used for setting the working parameters of the power supply; the processing circuit is connected with the setting circuit, acquires electric energy from the input end, processes the acquired electric energy according to the working parameters of the power supply, and outputs a corresponding output quantity; the output end is connected with the processing circuit, acquires the output quantity from the processing circuit and outputs the output quantity to the device to be tested; the signal input end receives the working signal; outputting output quantity which accords with preset change rule information to a device to be tested through an output end; when the working signal received by the processing circuit through the signal input end is a trigger maintaining signal, the processing circuit maintains the current output quantity; the processing circuit stops outputting when the termination condition is reached. The method and the device solve the technical problem that in the test, the power input of the device to be tested needs to be switched on and off for many times or switched on and off for many times to realize providing various running environments for the device to be tested.
Description
Technical Field
The application relates to the technical field of chip and component testing, in particular to a power supply and a working method of the power supply.
Background
In the production test of chips or components, it is necessary to detect characteristics of a suitable special operation environment, such as a most suitable voltage (current) environment, a lowest operating voltage (current) environment, etc., of the chip and to continue the operation for a certain period of time under certain conditions.
The existing method for detecting the special operating environment mainly comprises the steps of detecting the working state of a chip or a component through multiple on-off or switching of stable output signals of a power supply, repeating the steps, finally determining the power supply environment of the special power supply at the moment, and then continuously operating.
In general, certain chips or components need special power supply environments, when the special power supply environments are tested, the mode of repeatedly manually switching on and off and switching the power supply environments is often adopted to detect the chips or the components to be detected, the efficiency of the mode is low, the time is long, and under the condition of the on and off power supply environments, the detection process of the chips or the components to be detected is often easy to break, so that the operation test result obtained according to the detection process is inaccurate, and further, the operation characteristic curve drawn based on the operation test result has larger deviation compared with the inherent characteristic curve of the chips or the components to be detected, and the production requirement is not met.
Disclosure of Invention
The method mainly solves the technical problem that in the production test of chips or components, repeated on-off or multiple switching is needed to be carried out on the power input of the to-be-tested device so as to provide various power supply environments for the to-be-tested device.
According to a first aspect, in one embodiment there is provided a power supply for use with a device to be tested, comprising:
an input for receiving external power;
the setting circuit is used for setting the working parameters of the power supply;
the processing circuit is connected with the setting circuit and is used for acquiring electric energy from the input end and outputting corresponding output quantity after processing the acquired electric energy according to the working parameters of the power supply;
the output end is connected with the processing circuit and is used for acquiring the output quantity from the processing circuit and outputting the output quantity to the device to be tested;
the signal input end is used for receiving the working signal;
wherein:
when the power supply working parameters set by the setting circuit are output quantities which output information conforming to a preset change rule, the processing circuit correspondingly processes the electric energy obtained from the input end according to the power supply working parameters which output the output quantities conforming to the preset change rule information so as to output the output quantities conforming to the preset change rule information to the device to be tested through the output end;
When the working signal received by the processing circuit through the signal input end is a trigger holding signal, the processing circuit holds the current output quantity;
the processing circuit stops outputting when a termination condition is reached.
In some embodiments, the power supply further comprises:
the synchronous timer is connected with the processing circuit and used for acquiring the power supply working parameters according to the setting circuit and providing time reference quantity conforming to the power supply working parameters for the processing circuit;
when the power supply working parameter set by the setting circuit is output quantity which accords with the preset change rule information and the preset change rule information contains time factors, the synchronous timer provides the time reference quantity corresponding to the time factors, and the processing circuit carries out corresponding processing on the electric energy acquired from the input end according to the time reference quantity and then outputs the output quantity which accords with the preset change rule information to the device to be tested through the output end.
In some embodiments, when the synchronization timer is started, the processing circuit outputs a preset initial value as an output quantity, and then outputs an output quantity conforming to preset change rule information once every a certain amount of time reference quantity;
Wherein:
when the processing circuit acquires electric energy through the input end, the processing circuit sends an opening signal to the synchronous timer so as to enable the synchronous timer to be started;
when the working signal received by the processing circuit through the signal input end is a trigger holding signal, the processing circuit sends a closing signal to the synchronous timer, the synchronous timer is closed, and the processing circuit holds the current output quantity.
In some embodiments, the termination condition comprises:
the output quantity reaches a preset value; and/or the number of the groups of groups,
the processing circuit receives the off-load signal; and/or the number of the groups of groups,
the processing circuit keeps the current output quantity for a preset duration;
wherein:
when the termination condition comprises that the output quantity reaches a preset value, the termination condition is reached when the output quantity reaches the preset value, and the processing circuit stops outputting; the preset value set by the setting circuit is a safety threshold value or a value of the corresponding maximum output amount in the preset change rule information;
when the termination condition comprises that the processing circuit receives a load-off signal, the processing circuit stops outputting when the processing circuit receives the load-off signal input from the outside, namely the termination condition is reached;
When the termination condition comprises that the processing circuit keeps the current output quantity to reach the preset time, the termination condition is reached when the processing circuit keeps the current output quantity to reach the preset time, and the processing circuit stops outputting; the preset duration is set by the setting circuit.
In some embodiments, the preset change rule information includes:
sequentially outputting a plurality of output quantities which linearly change with a certain slope at fixed time intervals from a preset initial value; or (b)
And outputting a plurality of output quantities with fixed values which are increased or decreased in sequence at fixed time intervals from a preset initial value.
According to a second aspect, in one embodiment, there is provided a method for operating a power supply, applied to a device to be tested, including:
acquiring preset change rule information about output quantity;
providing output quantity for the device to be tested according to the preset change rule information;
when a trigger hold signal is acquired, maintaining the current output quantity to be provided to the device to be tested;
when the termination condition is reached, the output is stopped.
In some embodiments, the termination condition comprises:
the output quantity reaches a preset value; and/or the number of the groups of groups,
The processing circuit receives the off-load signal; and/or the number of the groups of groups,
the processing circuit keeps the current output quantity for a preset duration;
wherein:
when the termination condition comprises that the output quantity reaches a preset value, the termination condition is reached when the output quantity reaches the preset value, and the processing circuit stops outputting; the preset value set by the setting circuit is a safety threshold value or a value of the corresponding maximum output amount in the preset change rule information;
when the termination condition comprises that the processing circuit receives the load-off signal, the processing circuit stops outputting when the processing circuit receives the load-off signal, namely the termination condition is reached;
when the termination condition comprises that the time for keeping the current output quantity by the processing circuit reaches a preset duration, the termination condition is reached when the time for keeping the current output quantity by the processing circuit reaches the preset duration, and the processing circuit stops outputting; the preset duration is set by the setting circuit.
In some embodiments, the termination condition is generated based on the power source or is externally input to the power source, and the operating method further comprises:
providing a preset value;
judging whether the output quantity provided for the device to be tested according to the preset change rule information reaches a preset value or not: if yes, stopping providing output quantity to the device to be tested; if not, continuing to provide output quantity for the device to be tested according to the preset change rule information; and/or the number of the groups of groups,
Providing a preset time period;
judging whether the time for keeping the current output quantity to the device to be tested reaches a preset duration or not: if yes, stopping providing output quantity to the device to be tested; if not, continuing to provide output quantity for the device to be tested according to the preset change rule information; and/or the number of the groups of groups,
providing a first interface for receiving an external input off-load signal;
judging whether an off-load signal is received by the first interface: if yes, stopping providing output quantity to the device to be tested; if not, continuing to provide output quantity for the device to be tested according to the preset change rule information; and/or the number of the groups of groups,
providing a first operation part for generating a load-off signal based on external operation;
judging whether the first operation part generates a load-off signal due to being operated or not: if yes, stopping providing output quantity to the device to be tested; if not, continuing to provide output quantity for the device to be tested according to the preset change rule information.
In some embodiments, the trigger hold signal is generated based on an operating state of the device to be tested, and the operating method further comprises:
continuously providing output quantity for the device to be tested according to the information of the preset change rule;
Generating a trigger maintaining signal when the working state of the device to be tested reaches a preset state, and maintaining the current output quantity to be provided for the device to be tested after the power supply receives the trigger maintaining signal;
and when the working state of the device to be tested does not reach the preset state, the power supply continuously provides output quantity for the device to be tested according to the information of the preset change rule.
In some embodiments, the preset change rule information includes:
sequentially outputting a plurality of output quantities which linearly change with a certain slope at fixed time intervals from a preset initial value; or (b)
And outputting a plurality of output quantities with fixed values which are increased or decreased in sequence at fixed time intervals from a preset initial value.
According to the power supply and the working method of the power supply, the output of the power supply accords with the output quantity of the preset change rule information, wherein the output according to the preset change rule information comprises a plurality of different power supply modes, so that the output of the power supply accords with the output quantity of a plurality of different running environments on the premise of not powering off or switching, the device to be tested acquires a plurality of different power supply test environments, and the device to be tested is tested and supplied with power on the premise of meeting the inherent characteristic curve of the device to be tested, so that the detection process of the device to be tested can be continuously carried out, the detection effect meeting the test condition is obtained, and the deviation between the running characteristic curve drawn based on the running detection result and the inherent characteristic curve is in a reasonable range, so as to meet the production requirement.
Drawings
Fig. 1 is a schematic structural diagram (a) of a power supply according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram (ii) of a power supply according to an embodiment of the present application;
fig. 3 is a schematic structural diagram (iii) of a power supply according to an embodiment of the present application;
FIG. 4 is a flowchart (I) of a method for operating a power supply according to an embodiment of the present disclosure;
FIG. 5 is a flowchart (II) of a working method of the power supply according to the embodiment of the present application;
fig. 6 is a flowchart (iii) of a working method of the power supply according to the embodiment of the present application.
In the figure: 10. an input end; 20. setting a circuit; 30. a processing circuit; 40. an output end; 50. a signal input terminal; 60. a device to be tested; 70. synchronizing the timer; 80. a first interface; 90. a first operation part.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings by way of specific embodiments. Wherein like elements in different embodiments are numbered alike in association. In the following embodiments, numerous specific details are set forth in order to provide a better understanding of the present application. However, one skilled in the art will readily recognize that some of the features may be omitted, or replaced by other elements, materials, or methods in different situations. In some instances, some operations associated with the present application have not been shown or described in the specification to avoid obscuring the core portions of the present application, and may not be necessary for a person skilled in the art to describe in detail the relevant operations based on the description herein and the general knowledge of one skilled in the art.
Furthermore, the described features, operations, or characteristics of the description may be combined in any suitable manner in various embodiments. Also, various steps or acts in the method descriptions may be interchanged or modified in a manner apparent to those of ordinary skill in the art. Thus, the various orders in the description and drawings are for clarity of description of only certain embodiments, and are not meant to be required orders unless otherwise indicated.
The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated.
In the embodiment of the application, the power supply receives external electric energy through the input end, the working parameters of the power supply are set through the setting circuit, and the processing circuit provides different output modes for the power supply according to the working parameters set by the setting circuit, namely, the power supply outputs output quantity which accords with preset change rule information to the device to be tested through the output end; meanwhile, the power supply is provided with a signal input end for receiving a working signal, when the working signal received by the processing circuit through the signal input end is a trigger maintaining signal, the processing circuit stops changing the output quantity according to a preset change rule, and keeps the current output quantity from providing output for the device to be tested.
In order to solve the technical problem that in the production test of chips or components, the power input of the to-be-tested device needs to be switched on and off or switched for multiple times, so that multiple operating environments are provided for the to-be-tested device, some embodiments provide a power supply which can be applied to the to-be-tested device. Referring to fig. 1, the power supply in some embodiments includes an input terminal 10, a setting circuit 20, a processing circuit 30, an output terminal 40, and a signal input terminal 50, which are described in detail below.
The input 10 is for receiving external power. For example, the input 10 is for connection to mains.
The setting circuit 20 is used to set the power supply operating parameters.
The processing circuit 30 is connected to the setting circuit 20, and is configured to obtain electric energy from the input terminal 10, process the obtained electric energy according to the power operating parameter, and output a corresponding output quantity. The processing circuit 30 can, for example, process the harvested electrical energy according to power supply operating parameters to output a desired voltage, current and/or power.
The output terminal 40 is connected to the processing circuit 30 for obtaining output from the processing circuit 30 and outputting the output to the device under test 60.
The signal input 50 is for receiving an operating signal.
In some embodiments, when the power operation parameter set by the setting circuit 20 is the output quantity which outputs the information according to the preset change rule, the processing circuit 30 processes the electric energy obtained from the input terminal 10 according to the power operation parameter which outputs the output quantity which corresponds to the information according to the preset change rule, so as to output the output quantity which corresponds to the information according to the preset change rule to the device to be tested 60 through the output terminal 40; when the working signal received by the processing circuit 30 through the signal input terminal 50 is the trigger hold signal, the processing circuit 30 holds the current output quantity; the processing circuit 30 stops outputting when the termination condition is reached.
It can be seen that in some embodiments, the power supply is provided with an input 10, and is connected to an external source of electrical energy, such as a mains supply line, etc., via the input 10 to provide electrical energy input to the power supply; the power supply sets working parameters through the setting circuit 20, so that the power supply can provide output quantity outwards according to the set working parameters according to a preset change rule, and the preset change rule of the provided output quantity corresponds to the set working parameters; after the power supply passes through an operating parameter set by the setting circuit 20, the processing circuit 30 determines a preset change rule corresponding to the operating parameter according to the operating parameter, and then provides an output quantity to the device 60 to be tested according to the preset change rule; the output end 40 is connected with the processing circuit 30, and when the processing circuit 30 determines a preset change rule, the processing circuit 30 receives electric energy through the input end 10 and provides an output quantity which changes according to the preset change rule outwards through the output end 40; the power supply outputs according to the preset change rule information, so that the power supply can output quantity conforming to various different running environments on the premise of not powering off or switching, and the device 60 to be tested can acquire various different power supply testing environments. The processing circuit 30 receives a working signal sent from the outside of the power supply through the signal input end 50, when the received signal is a trigger hold signal, the processing circuit 30 keeps the current output quantity, that is, the output quantity gradually changes along with the output quantity provided by the power supply output end 40 according to a preset change rule, when the signal input end 50 receives the trigger hold signal, the output quantity just changes to a certain fixed value according to the preset change rule, and then the output quantity of the output end 40 is kept unchanged at the fixed value and provided for the device 60 to be tested until the output is stopped; the output quantity is the current output quantity according to a certain fixed value which is just changed according to a preset change rule. The device 60 to be tested is provided with continuous and uninterrupted output quantity, so that the device 60 to be tested obtains various different and continuous power supply test environments, preset change rule information is set to be in accordance with the inherent characteristic curve of the device 60 to be tested, and the device 60 to be tested is tested and powered on the premise that the inherent characteristic curve of the device 60 to be tested is met, so that the testing process of the device 60 to be tested can be continuously carried out, and the testing effect meeting the testing condition is obtained; if the detection result is plotted as an operation characteristic curve, the deviation between the operation characteristic curve and the inherent characteristic curve can be made within a reasonable range, i.e., the deviation between the operation characteristic curve obtained by the test and the inherent characteristic curve of the device 60 to be tested can be reduced. The intrinsic characteristic curve of a device 60 to be tested is a characteristic curve of the device 60 to be tested, which is self-produced and is not representative of the real characteristic of the device 60 to be tested, but is representative of the overall characteristic of the same batch of products of the device 60 to be tested, that is, the intrinsic characteristic curve of the device 60 to be tested has a certain deviation from the real characteristic, the power supply of the present application provides the device 60 to be tested with an output quantity conforming to the information of the preset change rule, so that the real characteristic of the device 60 to be tested is expected to be obtained through testing, that is, the real characteristic is reflected by obtaining the operation characteristic curve. In the process of testing the device 60 to be tested to obtain the operation characteristic curve, by monitoring the state of the device 60 to be tested, when the device 60 to be tested reaches a certain state, a trigger hold signal is sent to the signal input end 50 of the power supply, so that the power supply keeps the current output quantity for output, and when the trigger hold signal of the current output quantity is generated, the power supply outputs the output quantity provided by the device 60 to be tested.
In some embodiments, the power operating parameter is an output quantity outputting information according to a predetermined change rule, that is, the operating parameter corresponds to a predetermined change rule, and the processing circuit 30 provides an output quantity changing according to the predetermined change rule through the output terminal 40, and then considers that the output quantity is an output quantity according to the predetermined change rule information.
In some embodiments, the preset change rule information is: sequentially outputting a plurality of output quantities which linearly change with a certain slope at fixed time intervals from a preset initial value; or sequentially outputting a plurality of output quantities with fixed values increasing or decreasing at fixed time intervals from a preset initial value.
In some embodiments, a plurality of output quantities linearly varying with a certain slope are sequentially output at fixed time intervals, that is, with time as the abscissa axis and the magnitude of the output quantity as the ordinate axis, then the line connecting a series of output quantities sequentially output is a straight line whose starting point coordinates are (T) 0 ，A 0 ) Wherein T is 0 For the initial time, A 0 The initial value is preset; as time goes on, the output value corresponding to the time is obtained from the straight line when the fixed time interval passes for the first time, and thus the processing circuit 30 provides the output of the output value to the device under test 60 through the output terminal 40 at the time. And then, after a fixed time interval, providing the output quantity with the corresponding output quantity value at the moment outwards.
The method is characterized in that a plurality of output quantities with a fixed value increasing or decreasing are sequentially output at fixed time intervals, and the output quantity obtaining mode is basically the same as the output quantity obtaining mode for sequentially outputting a plurality of output quantities with a certain slope at fixed time intervals, and the difference is that the corresponding relation between the output quantities and time is not necessarily a linear relation, all the output quantity values which are provided and are to be provided are sequentially arranged to form an output quantity value array or an output quantity value set, wherein the output quantity value array can be an equal difference increasing number array, an equal difference decreasing number array, an equal ratio increasing number array, an equal ratio decreasing number array and the like, or the output quantity value set can be a numerical value set with a parabolic function and a waveform function, and the waveform function can be a sine function, a cosine function, a square wave function and the like, or a complex waveform function formed by a plurality of waves.
Referring to fig. 2, in some embodiments, the power supply further includes a synchronization timer 70. The synchronization timer 70 is connected with the processing circuit 30, and is configured to obtain a power supply operation parameter according to the setting circuit 20, and provide a time reference amount according with the power supply operation parameter to the processing circuit 30; when the power operating parameter set by the setting circuit 20 is an output quantity which outputs information according to a preset change rule and the preset change rule information includes a time factor, the synchronization timer 70 provides a time reference corresponding to the time factor, and the processing circuit 30 processes the electric energy obtained from the input terminal 10 according to the time reference, and outputs the output quantity according to the preset change rule information to the device 60 to be tested through the output terminal 40.
When the synchronization timer 70 is started, the processing circuit 30 first outputs a preset initial value as an output quantity, and then outputs an output quantity conforming to the preset change rule information once every a certain amount of time reference quantity. When the processing circuit 30 obtains electric energy through the input terminal 10, the processing circuit 30 sends an opening signal to the synchronization timer 70 to enable the synchronization timer 70 to be opened; when the operation signal received by the processing circuit 30 through the signal input terminal 50 is a trigger hold signal, the processing circuit 30 sends a shut-down signal to the synchronization timer 70, the synchronization timer 70 is shut down, and the processing circuit 30 holds the current output quantity.
In some embodiments, the synchronization timer 70 provides a time reference to the processing circuit 30 that matches the operating parameter content of the power supply, based on the operating parameter content, after the operating parameter is set by the setting circuit 20. The content of the power operating parameters includes a command to output an output quantity corresponding to the preset change rule information to the device under test 60 via the output terminal 40, and the synchronization timer 70 provides a time reference for measuring the time factor when the preset change rule information includes the time factor.
In some embodiments, processing circuit 30 notifies synchronization timer 70 and causes synchronization timer 70 to begin operating while the power supply begins to provide output to device under test 60, processing circuit 30 provides a preset initial value to device under test 60 via output 40, and provides output to device under test 60 of a different magnitude than the maintained amount over time after a period of time. The time period provided by each output may or may not be equal, but the time period must include a certain number of time references, that is, the time period is an integer multiple of the time references, so that the time references may be set to a smaller time unit.
In some embodiments, during the period when the processing circuit 30 continuously provides the output quantity to the device under test 60 through the output terminal 40, if the device under test 60 reaches a certain desired state, a feedback signal is generated, the external device after receiving the feedback signal sends a trigger hold signal to the signal input terminal 50, or the feedback signal is directly used as the trigger hold signal to the signal input terminal 50, when the working signal received by the processing circuit 30 through the signal input terminal 50 is the trigger hold signal, the processing circuit 30 sends a shutdown signal to the synchronization timer 70, the synchronization timer 70 is closed, and the processing circuit 30 maintains the current output quantity. The feedback signal may be referred to as a working signal, whether it is directly sent to the signal input terminal 50 or processed by an external device and then sent to the signal input terminal 50, and the purpose of the feedback signal is to provide external feedback to the power supply.
For example, when testing a certain device 60 to be tested, the output quantity change rule is preset, that is, the output quantity which outputs the information according with the preset change rule is: sequentially providing values in a series set (A, B, C, D, E) as output values at specific times respectively, wherein the specific preset change rule is as follows:
The a output starts to be provided at time 0s and continues.
Changing to provide B output at 1 second time and continuing.
The change was to provide C output at 3 seconds and continued.
The change to provide D output was made at 6 seconds and continued.
Changing to provide E output at 10 seconds and continuing.
The threshold stop output is reached at 15 seconds.
In the above example, the 0s time, 1 second time, 3 seconds time, 6 seconds time, 10 seconds time and 15 seconds time are time factors, that is, the preset change rule information includes time factors; the above examples can also be expressed as:
the output A is 1 second later, the output B is 2 seconds later, the output C is 3 seconds later, the output D is 4 seconds later, the output E is 5 seconds later, and the stop is realized.
Thus, the above example can be expressed as if the time reference provided by the synchronization timer 70 is 1 second, with the time reference being denoted as T:
and outputting A-1T, B-2T, C-3T, D-4T, E-5T and stopping, namely outputting the output quantity according with the preset change rule information.
If the time reference provided by the synchronization timer 70 is 0.1 seconds, the above example can be expressed as:
the output A-10T, the output B-20T, the output C-30T, the output D-40T, the output E-50T and stopping, namely, the output quantity which accords with the preset change rule information is output.
For another example, assuming that after outputting the D output, the device under test 60 reaches the desired state, a feedback signal is generated, and the feedback signal is directly sent to the signal input terminal 50 or processed by an external device and then sent to the signal input terminal 50, where the signal input terminal 50 receives the working signal triggering the hold signal and forwards the working signal to the processing circuit 30, and the processing circuit 30 performs two operations: firstly, a closing signal is sent to the synchronous timer 70, and the synchronous timer 70 stops timing and does not work any more; and secondly, keeping the output quantity D unchanged and continuously providing output to the device to be tested.
The above describes that the processing circuit 30 performs corresponding processing on the electric energy obtained from the input terminal according to the power supply operation parameter outputting the output quantity according with the preset change rule information so as to output the output quantity according with the preset change rule information to the device 60 to be tested through the output terminal 40; in some embodiments, processing circuitry 30 stops outputting when a termination condition is reached. The termination conditions are described in detail below.
In some embodiments, processing circuit 30, and even the entire power supply, stops providing output out when a termination condition is reached, with two modes of achieving:
One of the modes is to automatically achieve the termination condition, and the automatic termination condition comprises at least two modes, namely: the processing circuit 30 receives the load-off signal generated from the outside of the power supply through the signal input terminal 50, and the termination condition is considered to be reached when the load-off signal is received; the processing circuit 30 determines whether the power supply operation should terminate the output, for example, whether the output quantity reaches the highest value or the safety threshold, etc., and whether the output duration reaches the time threshold, etc., and considers that the termination condition is reached when the output quantity reaches the highest value or the safety threshold, or the output duration reaches the time threshold.
The second mode is to manually achieve the termination condition, for example, a switch button is arranged on the power supply, and when the operator intends to turn off the power supply or stop outputting the power supply by operating the switch button, the termination condition is considered to be achieved.
Referring to fig. 3, in some embodiments, the termination condition includes three or any one or any two of the following schemes.
One is: the output reaches a preset value. When the termination condition includes that the output quantity reaches a preset value, the termination condition is reached when the output quantity reaches the preset value, and the processing circuit 30 stops outputting; the preset value set by the setting circuit 20 is a value of the maximum output amount corresponding to the safety threshold value or the preset change rule information.
In some embodiments, when the device 60 to be tested is tested by using the power supply, since a certain probability of defective products occurs in the device 60 to be tested, the device can be stopped in time to prevent the power supply from being damaged due to excessively high output in order to prevent the defective products from being tested, so that a preset value is set, when the preset value is reached, the termination condition is considered to be reached, and the processing circuit 30 stops outputting; the preset value set may be a safety threshold or a value of a maximum output amount corresponding to the preset change rule information: setting a safety threshold when no upper limit exists in the preset rule information, and forcing the processing circuit 30 to stop outputting when the output quantity of the safety threshold is reached; and when the upper limit is set in the preset rule information, the output is stopped when the upper limit is reached.
The second step is: the processing circuit 30 receives the off-load signal; when the termination condition includes the processing circuit 30 receiving the off-load signal, the processing circuit 30 stops outputting when the processing circuit 30 receives the off-load signal input from the outside, i.e., the termination condition is reached.
In some embodiments, the off-load signal may be generated by an external power source and by the power source itself. When the off-load signal is generated externally from the power supply, a first interface 80 may be provided on the power supply for receiving an external input off-load signal, and when the first interface 80 receives the external input off-load signal, the signal is transmitted to the processing circuit 30, and the processing circuit 30 operates by determining whether the off-load signal is received by the first interface 80: if yes, stopping providing the output quantity to the device 60 to be tested, and if not, continuing to provide the output quantity to the device 60 to be tested according to the preset change rule information. When the off-load signal is generated by the power supply itself, a first operation portion 90 for generating the off-load signal based on an external operation, such as a stop switch key, may be provided on the power supply; when the worker performs an operation by the first operation unit 90, the processing circuit 30 performs an operation by determining whether or not the first operation unit 90 has been operated to generate the load-off signal: if yes, stopping providing the output quantity to the device 60 to be tested, and if not, continuing to provide the output quantity to the device 60 to be tested according to the preset change rule information.
The third is: the processing circuit 30 maintains the current output for a preset period of time; when the termination condition includes that the processing circuit 30 keeps the current output quantity for a preset time period, the termination condition is reached when the processing circuit 30 keeps the current output quantity for the preset time period, and the processing circuit 30 stops outputting; the preset time period is set by the setting circuit 20.
In some embodiments, when the device under test 60 is tested using the power supply, a preset time period may be set, and when the preset time period is reached, the processing circuit 30 considers that the termination condition is reached, and the processing circuit 30 stops outputting, and the processing circuit 30 works by determining whether the time for maintaining the current output amount to the device under test 60 reaches the preset time period: if so, stopping providing output to the device under test 60; if not, the output is continuously provided to the device under test 60 according to the preset change rule information.
Some embodiments provide a method for operating a power supply applied to a device under test 60; the power source may be the power source described in any of the embodiments herein. Referring to fig. 4, the working method of the power supply includes the following steps:
step S401, obtaining preset change rule information about output quantity.
In some embodiments, the change rule information is preset: sequentially outputting a plurality of output quantities which linearly change with a certain slope at fixed time intervals from a preset initial value; or sequentially outputting a plurality of output quantities with fixed values increasing or decreasing at fixed time intervals from a preset initial value.
In some embodiments, a plurality of output quantities linearly varying with a certain slope are sequentially output at fixed time intervals, that is, with time as the abscissa axis and the magnitude of the output quantity as the ordinate axis, then the line connecting a series of output quantities sequentially output is a straight line whose starting point coordinates are (T) 0 ，A 0 ) Wherein T is 0 For the initial time, A 0 The initial value is preset; as time goes on, the output value corresponding to the time is obtained from the straight line when the fixed time interval passes for the first time, and thus the output of the output value is supplied to the device under test 60 through the output terminal 40 at the time. After that, each time interval is elapsed, the device under test 60 is provided with an output of the magnitude corresponding to the output value at the time.
The method is characterized in that a plurality of output quantities with a fixed value increasing or decreasing are sequentially output at fixed time intervals, and the output quantity obtaining mode is basically the same as the output quantity obtaining mode for sequentially outputting a plurality of output quantities with a certain slope at fixed time intervals, and the difference is that the corresponding relation between the output quantities and time is not necessarily a linear relation, all the output quantity values which are provided and are to be provided are sequentially arranged to form an output quantity value array or an output quantity value set, wherein the output quantity value array can be an equal difference increasing number array, an equal difference decreasing number array, an equal ratio increasing number array, an equal ratio decreasing number array and the like, or the output quantity value set can be a numerical value set with a parabolic function and a waveform function, and the waveform function can be a sine function, a cosine function, a square wave function and the like, or a complex waveform function formed by a plurality of waves.
Step S402, providing the output quantity to the device under test 60 according to the preset change rule information.
In some embodiments, after the predetermined change rule information is determined, the device under test 60 is connected through the circuit, and the device under test 60 starts to be provided with the output quantity that changes according to the predetermined change rule information.
Step S403, when the trigger hold signal is acquired, the hold current output is provided to the device under test 60.
In some embodiments, receiving in real time an operating signal from outside the power supply, and when the received operating signal is a trigger hold signal, maintaining the current output to be provided to the device under test 60; that is, as the output quantity provided by the power output terminal 40 gradually changes according to the preset change rule, when the trigger hold signal is received, the output quantity just changes to a certain fixed value according to the preset change rule, and then the output quantity of the output terminal 40 is kept at the fixed value and is provided to the device 60 to be tested until the output is stopped.
Step S404, stopping outputting when the termination condition is reached.
In some embodiments, the supply of output to the outside is stopped when a termination condition is reached, which has two modes of achievement:
One of the modes is to automatically achieve the termination condition, and the automatic termination condition comprises at least two modes, namely: firstly, receiving a load-off signal generated by the outside of the power supply, and considering that the load-off signal reaches a termination condition when the load-off signal is received; and secondly, judging whether the power supply working condition should terminate output, for example, whether the output quantity reaches the highest value or a safety threshold value, and the like, and further, judging whether the output time length reaches a time threshold value, and the like, and when the output quantity reaches the highest value or the safety threshold value, or the output time length reaches the time threshold value, judging that the termination condition is reached.
The second mode is to manually achieve the termination condition, for example, a switch button is arranged on the power supply, and when the operator intends to turn off the power supply or stop outputting the power supply by operating the switch button, the termination condition is considered to be achieved.
In some embodiments, the termination condition comprises: the output quantity reaches a preset value; and/or the processing circuit 30 receives the off-load signal; and/or the processing circuit 30 maintains the current output for a preset period of time.
When the termination condition includes that the output quantity reaches a preset value, the termination condition is reached when the output quantity reaches the preset value, and the processing circuit 30 stops outputting; the preset value set by the setting circuit 20 is a value of the maximum output amount corresponding to the safety threshold value or the preset change rule information.
When the termination condition includes the processing circuit 30 receiving the off-load signal, the processing circuit 30 stops outputting when the processing circuit 30 receives the off-load signal, i.e., the termination condition is reached.
When the termination condition includes that the time for which the processing circuit 30 keeps the current output amount reaches the preset time period, the termination condition is reached when the processing circuit 30 keeps the current output amount to reach the preset time period, and the processing circuit 30 stops outputting; the preset time period is set by the setting circuit 20.
The contents of the termination conditions are described above, and in order to achieve these termination conditions, the processing circuit needs to be preprocessed. The following describes in detail the pretreatment performed to achieve the termination condition.
In some embodiments, the termination condition is generated based on the power source or is externally input to the power source, and the method of operation further comprises:
providing a preset value. Determining whether the output amount provided to the device under test 60 according to the preset change rule information reaches a preset value: if so, stopping providing output to the device under test 60; if not, the output is continuously provided to the device under test 60 according to the preset change rule information.
And/or providing a preset time period. Determining whether the time to hold the current output to the device under test 60 is up to a preset duration: if so, stopping providing output to the device under test 60; if not, the output is continuously provided to the device under test 60 according to the preset change rule information.
And/or providing a first interface 80 for receiving an external input off-load signal. Determine whether an off-load signal is received by the first interface 80: if so, stopping providing output to the device under test 60; if not, the output is continuously provided to the device under test 60 according to the preset change rule information.
And/or, a first operation portion 90 for generating a load-off signal based on an external operation is provided. Judging whether the first operation section 90 generates an off-load signal due to being operated: if so, stopping providing output to the device under test 60; if not, the output is continuously provided to the device under test 60 according to the preset change rule information.
In some embodiments, when the device 60 to be tested is tested by using the power supply, since a certain probability of defective products occurs in the device 60 to be tested, the device can be stopped in time to prevent the power supply from being damaged due to excessively high output in order to prevent the defective products from being tested, so that a preset value is set, when the preset value is reached, the termination condition is considered to be reached, and the processing circuit 30 stops outputting; the preset value set may be a safety threshold or a value of a maximum output amount corresponding to the preset change rule information: setting a safety threshold when no upper limit exists in the preset rule information, and forcing the processing circuit 30 to stop outputting when the output quantity of the safety threshold is reached; and when the upper limit is set in the preset rule information, the output is stopped when the upper limit is reached. When the device 60 to be tested is tested using the power supply, a preset time period may be set, and when the preset time period is reached, the processing circuit 30 is considered to reach the termination condition, and the processing circuit 30 stops outputting, and operates by judging whether the time for maintaining the current output amount to the device 60 to be tested is up to the preset time period: if so, stopping providing output to the device under test 60; if not, the output is continuously provided to the device under test 60 according to the preset change rule information. The generation of the off-load signal is possible in two ways, namely, the off-load signal generated externally from the power supply and the off-load signal generated by the power supply itself. When the off-load signal is generated externally from the power supply, a first interface 80 may be provided on the power supply for receiving an external input off-load signal, and when the first interface 80 receives the external input off-load signal, the signal is transmitted to the processing circuit 30, and the processing circuit 30 operates by determining whether the off-load signal is received by the first interface 80: if yes, stopping providing the output quantity to the device 60 to be tested, and if not, continuing to provide the output quantity to the device 60 to be tested according to the preset change rule information. When the off-load signal is generated by the power supply itself, a first operation portion 90 for generating the off-load signal based on an external operation, such as a stop switch key, may be provided on the power supply; when the worker performs an operation by the first operation unit 90, the processing circuit 30 performs an operation by determining whether or not the first operation unit 90 has been operated to generate the load-off signal: if yes, stopping providing the output quantity to the device 60 to be tested, and if not, continuing to provide the output quantity to the device 60 to be tested according to the preset change rule information.
Referring to fig. 5, in some embodiments, the trigger hold signal is generated based on the operating state of the device under test 60, and the operating method further comprises the steps of:
step 501, continuously providing output to the device under test 60 according to the preset change rule information.
Step 502, generating a trigger hold signal when the working state of the device 60 to be tested reaches a preset state, and after the power supply receives the trigger hold signal, maintaining the current output quantity to be provided to the device 60 to be tested.
In step 503, when the working state of the device under test 60 does not reach the preset state, the power supply continues to provide the output quantity to the device under test 60 according to the preset change rule information.
In some embodiments, during the period when the processing circuit 30 continuously provides the output quantity to the device under test 60 through the output terminal 40, if the device under test 60 reaches a certain desired state, a feedback signal is generated, the external device after receiving the feedback signal sends a trigger hold signal to the signal input terminal 50, or the feedback signal is directly used as the trigger hold signal to the signal input terminal 50, when the working signal received by the processing circuit 30 through the signal input terminal 50 is the trigger hold signal, the processing circuit 30 sends a shutdown signal to the synchronization timer 70, the synchronization timer 70 is closed, and the processing circuit 30 maintains the current output quantity. The feedback signal may be referred to as a working signal, whether it is directly sent to the signal input terminal 50 or processed by an external device and then sent to the signal input terminal 50, and the purpose of the feedback signal is to provide external feedback to the power supply. When the device under test 60 does not reach the desired state, no feedback signal is generated and the power supply continues to provide output to the device under test 60 according to the preset change rule information.
Referring to fig. 6, in some embodiments, a method for operating a power supply is provided, including the following steps:
step a, setting a certain slope output mode for the power supply or starting any output sequence function of setting increment (or decrement) steps.
Step b, power on output, the synchronization timer 70 is turned on, and the increment (or decrement) of the output pattern set at step intervals of 1ms or 10ms is output.
And c, when an external trigger input is received, the timer is closed, and the power supply keeps the output of the timer unchanged until the power supply is manually turned off.
And d, if the preset protection condition is continuously increased, the external trigger input signal is not received, and the load is directly turned off (the external access loop is judged to be abnormal).
Those skilled in the art will appreciate that all or part of the functions of the various methods in the above embodiments may be implemented by hardware, or may be implemented by a computer program. When all or part of the functions in the above embodiments are implemented by means of a computer program, the program may be stored in a computer readable storage medium, and the storage medium may include: read-only memory, random access memory, magnetic disk, optical disk, hard disk, etc., and the program is executed by a computer to realize the above-mentioned functions. For example, the program is stored in the memory of the device, and when the program in the memory is executed by the processor, all or part of the functions described above can be realized. In addition, when all or part of the functions in the above embodiments are implemented by means of a computer program, the program may be stored in a storage medium such as a server, another computer, a magnetic disk, an optical disk, a flash disk, or a removable hard disk, and the program in the above embodiments may be implemented by downloading or copying the program into a memory of a local device or updating a version of a system of the local device, and when the program in the memory is executed by a processor.
The foregoing description of specific examples has been presented only to aid in the understanding of the present application and is not intended to limit the present application. Several simple deductions, modifications or substitutions may also be made by the person skilled in the art to which the present application pertains, according to the idea of the present application.
Claims (10)
1. A power supply for a device under test, comprising:
an input for receiving external power;
the setting circuit is used for setting the working parameters of the power supply;
the processing circuit is connected with the setting circuit and is used for acquiring electric energy from the input end and outputting corresponding output quantity after processing the acquired electric energy according to the working parameters of the power supply;
the output end is connected with the processing circuit and is used for acquiring the output quantity from the processing circuit and outputting the output quantity to the device to be tested;
the signal input end is used for receiving the working signal;
wherein:
when the power supply working parameters set by the setting circuit are output quantities which output information conforming to a preset change rule, the processing circuit correspondingly processes the electric energy obtained from the input end according to the power supply working parameters which output the output quantities conforming to the preset change rule information so as to output the output quantities conforming to the preset change rule information to the device to be tested through the output end;
When the working signal received by the processing circuit through the signal input end is a trigger holding signal, the processing circuit holds the current output quantity;
the processing circuit stops outputting when a termination condition is reached.
2. The power supply of claim 1, wherein the power supply further comprises:
the synchronous timer is connected with the processing circuit and used for acquiring the power supply working parameters according to the setting circuit and providing time reference quantity conforming to the power supply working parameters for the processing circuit;
when the power supply working parameter set by the setting circuit is output quantity which accords with the preset change rule information and the preset change rule information contains time factors, the synchronous timer provides the time reference quantity corresponding to the time factors, and the processing circuit carries out corresponding processing on the electric energy acquired from the input end according to the time reference quantity and then outputs the output quantity which accords with the preset change rule information to the device to be tested through the output end.
3. The power supply according to claim 2, wherein when the synchronization timer is turned on, the processing circuit outputs a preset initial value as an output quantity first, and then outputs an output quantity conforming to preset change rule information once every a certain number of time references;
Wherein:
when the processing circuit acquires electric energy through the input end, the processing circuit sends an opening signal to the synchronous timer so as to enable the synchronous timer to be started;
when the working signal received by the processing circuit through the signal input end is a trigger holding signal, the processing circuit sends a closing signal to the synchronous timer, the synchronous timer is closed, and the processing circuit holds the current output quantity.
4. The power supply of claim 1, wherein the termination condition comprises:
the output quantity reaches a preset value; and/or the number of the groups of groups,
the processing circuit receives the off-load signal; and/or the number of the groups of groups,
the processing circuit keeps the current output quantity for a preset duration;
wherein:
when the termination condition comprises that the output quantity reaches a preset value, the termination condition is reached when the output quantity reaches the preset value, and the processing circuit stops outputting; the preset value set by the setting circuit is a safety threshold value or a value of the corresponding maximum output amount in the preset change rule information;
when the termination condition comprises that the processing circuit receives a load-off signal, the processing circuit stops outputting when the processing circuit receives the load-off signal input from the outside, namely the termination condition is reached;
When the termination condition comprises that the processing circuit keeps the current output quantity to reach the preset time, the termination condition is reached when the processing circuit keeps the current output quantity to reach the preset time, and the processing circuit stops outputting; the preset duration is set by the setting circuit.
5. The power supply of any one of claims 1 to 4, wherein the preset change rule information includes:
sequentially outputting a plurality of output quantities which linearly change with a certain slope at fixed time intervals from a preset initial value; or (b)
And outputting a plurality of output quantities with fixed values which are increased or decreased in sequence at fixed time intervals from a preset initial value.
6. A method of operating a power supply for a device to be tested, the method comprising:
acquiring preset change rule information about output quantity;
providing output quantity for the device to be tested according to the preset change rule information;
when a trigger hold signal is acquired, maintaining the current output quantity to be provided to the device to be tested;
when the termination condition is reached, the output is stopped.
7. The method of operation of a power supply of claim 6, wherein the termination condition comprises:
The output quantity reaches a preset value; and/or the number of the groups of groups,
the processing circuit receives the off-load signal; and/or the number of the groups of groups,
the processing circuit keeps the current output quantity for a preset duration;
wherein:
when the termination condition comprises that the output quantity reaches a preset value, the termination condition is reached when the output quantity reaches the preset value, and the processing circuit stops outputting; the preset value set by the setting circuit is a safety threshold value or a value of the corresponding maximum output quantity in the preset change rule information;
when the termination condition comprises that the processing circuit receives the load-off signal, the processing circuit stops outputting when the processing circuit receives the load-off signal, namely the termination condition is reached;
when the termination condition comprises that the time for keeping the current output quantity by the processing circuit reaches a preset duration, the termination condition is reached when the time for keeping the current output quantity by the processing circuit reaches the preset duration, and the processing circuit stops outputting; the preset duration is set by a setting circuit.
8. The method of operation of a power supply of claim 7, wherein the termination condition is generated based on the power supply or externally input to the power supply, the method of operation further comprising:
Providing a preset value;
judging whether the output quantity provided for the device to be tested according to the preset change rule information reaches a preset value or not: if yes, stopping providing output quantity to the device to be tested; if not, continuing to provide output quantity for the device to be tested according to the preset change rule information; and/or the number of the groups of groups,
providing a preset time period;
judging whether the time for keeping the current output quantity to the device to be tested reaches a preset duration or not: if yes, stopping providing output quantity to the device to be tested; if not, continuing to provide output quantity for the device to be tested according to the preset change rule information; and/or the number of the groups of groups,
providing a first interface for receiving an external input off-load signal;
judging whether an off-load signal is received by the first interface: if yes, stopping providing output quantity to the device to be tested; if not, continuing to provide output quantity for the device to be tested according to the preset change rule information; and/or the number of the groups of groups,
providing a first operation part for generating a load-off signal based on external operation;
judging whether the first operation part generates a load-off signal due to being operated or not: if yes, stopping providing output quantity to the device to be tested; if not, continuing to provide output quantity for the device to be tested according to the preset change rule information.
9. The method of operation of a power supply of claim 6, wherein the trigger hold signal is generated based on an operational state of the device to be tested, the method of operation further comprising:
continuously providing output quantity for the device to be tested according to the information of the preset change rule;
generating a trigger maintaining signal when the working state of the device to be tested reaches a preset state, and maintaining the current output quantity to be provided for the device to be tested after the power supply receives the trigger maintaining signal;
and when the working state of the device to be tested does not reach the preset state, the power supply continuously provides output quantity for the device to be tested according to the information of the preset change rule.
10. The method for operating a power supply according to any one of claims 6 to 9, wherein the preset change rule information includes:
sequentially outputting a plurality of output quantities which linearly change with a certain slope at fixed time intervals from a preset initial value; or (b)
And outputting a plurality of output quantities with fixed values which are increased or decreased in sequence at fixed time intervals from a preset initial value.
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