CN110050197B - Power supply evaluation apparatus - Google Patents
Power supply evaluation apparatus Download PDFInfo
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- CN110050197B CN110050197B CN201780075782.7A CN201780075782A CN110050197B CN 110050197 B CN110050197 B CN 110050197B CN 201780075782 A CN201780075782 A CN 201780075782A CN 110050197 B CN110050197 B CN 110050197B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
- G01R31/42—AC power supplies
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- Secondary Cells (AREA)
- Power Sources (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
According to various embodiments, a power source evaluation device is provided. The power supply evaluation apparatus according to an embodiment of the present invention includes: an input terminal unit electrically connected to a power supply to be evaluated; a voltage determination unit electrically connected to the input terminal unit, for determining whether a voltage of the power supply to be evaluated satisfies a predetermined condition, and when the voltage satisfies the predetermined condition, the voltage determination unit outputs a first signal corresponding to satisfaction of the predetermined condition; a state holding unit electrically connected to the voltage determining unit, for holding a state corresponding to the first signal and outputting a second signal corresponding to the state; and a power supply holding unit electrically connected to the input terminal unit and the state holding unit, charged by the power supply to be evaluated, and supplying power to the state holding unit.
Description
Technical Field
The present disclosure relates to a power supply evaluation apparatus.
Background
In a power supply including a battery, voltage holding performance for maintaining a constant output voltage is important. In order to verify the voltage holding performance, in the related art, a measuring device such as an oscilloscope is connected to a power source such as a battery through a wire to evaluate whether or not a constant output voltage is held.
However, in such an evaluation method, the connection of the wire may be disconnected during evaluation to fail to complete the evaluation, or noise may be generated and thus accurate evaluation may not be performed. Further, since a general-purpose measuring device is used, evaluation cannot be performed quickly for a large number of power supplies.
Disclosure of Invention
Technical problem
A power supply evaluation device is provided that can more easily determine whether a power supply maintains a constant output voltage.
Further, a power supply evaluation device usable for various power supplies by using a simple configuration is provided.
Further, a power supply evaluation apparatus that can perform power supply evaluation without separately supplying electric power is provided.
Further, a power supply evaluation apparatus that can perform more accurate power supply evaluation is provided.
Technical scheme
According to an aspect of the present disclosure, a power evaluation apparatus includes: an input terminal unit electrically connected to a power supply to be evaluated; a voltage determination unit electrically connected to the input terminal unit and configured to determine whether the voltage of the power supply to be evaluated satisfies a predetermined condition, and when the voltage of the power supply to be evaluated satisfies the predetermined condition, the voltage determination unit outputs a first signal corresponding to satisfaction of the predetermined condition; a state holding unit electrically connected to the voltage determining unit and configured to hold a state corresponding to the first signal and output a second signal corresponding to the state; and a power supply holding unit electrically connected to the input terminal unit and the state holding unit, and configured to be charged by a power supply to be evaluated and supply power to the state holding unit.
The predetermined condition may be that the voltage of the power supply to be evaluated is equal to or less than a predetermined threshold voltage, and the first signal may be a signal corresponding to a condition that the voltage of the power supply to be evaluated is equal to or less than the predetermined threshold voltage is satisfied.
The state holding unit may be configured to change the state to a first state based on the first signal and hold the first state and output a second signal corresponding to the first state, and the first state may be a state representing that a condition that the voltage of the power supply to be evaluated is equal to or less than a preset threshold voltage is satisfied.
The state holding unit may be configured to hold the second state before the first signal is input and to hold the first state after the first signal is input, and the second state may be a state indicating that a condition that the voltage of the power supply to be evaluated exceeds a preset threshold voltage is satisfied.
The power supply evaluation device may further include: and a state initializing unit electrically connected to the state holding unit and the input terminal unit, and configured to change the state of the state holding unit to and maintain the second state based on an input of a user.
The power supply holding unit may be configured to supply power to the state holding unit when the state holding unit is in the first state and may be charged by the power supply to be evaluated when the state holding unit is in the second state.
The power supply evaluation device may further include: and a state display unit electrically connected to the input terminal unit and the state holding unit, and configured to display an evaluation result of the power supply to be evaluated based on the second signal.
The state display unit may include an illumination unit that blinks based On the second signal, and the illumination unit may be turned Off (Off) when the state maintaining unit is in the first state and may be turned On (On) when the state maintaining unit is in the second state.
The power source to be evaluated may be a Direct Current (DC) power source, and the input terminal unit may include two input terminals electrically connected to the DC power source.
The predetermined condition may be a condition that the voltage of the power supply to be evaluated is equal to or greater than a predetermined threshold voltage, and the first signal may be a signal corresponding to a condition that the voltage of the power supply to be evaluated is equal to or greater than the predetermined threshold voltage is satisfied.
Technical effects
According to various embodiments, a power supply evaluation device may be provided that may determine whether a power supply maintains a constant output voltage.
Further, it is possible to provide a power supply evaluation device that can be used for various power supplies by using a simple structure.
Further, it is possible to provide a power supply evaluation apparatus that can perform power supply evaluation without separately supplying power.
Further, a power supply evaluation apparatus that can perform more accurate power supply evaluation can be provided.
Drawings
Fig. 1 shows a configuration of a power source evaluation device according to an embodiment.
Fig. 2 shows an example of a circuit configuration of a power supply evaluation device according to an embodiment.
Fig. 3 is a diagram showing the state of each node and LED to explain the operation of the example circuit shown in fig. 2.
Best mode for carrying out the invention
A power supply evaluation apparatus includes: an input terminal unit electrically connected to a power supply to be evaluated; a voltage determination unit electrically connected to the input terminal unit and configured to determine whether the voltage of the power supply to be evaluated satisfies a predetermined condition, and when the voltage of the power supply to be evaluated satisfies the predetermined condition, the voltage determination unit outputs a first signal corresponding to satisfaction of the predetermined condition; a state holding unit electrically connected to the voltage determining unit and configured to hold a state corresponding to the first signal and output a second signal corresponding to the state; and a power supply holding unit electrically connected to the input terminal unit and the state holding unit, and configured to charge by a power supply to be evaluated and supply power to the state holding unit.
Detailed Description
These and/or other aspects will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings. However, the present disclosure is not limited to the embodiments set forth herein, but may be embodied in many different forms and it should be understood that the present disclosure includes all changes, equivalents, and substitutions without departing from the spirit and technical scope of the disclosure. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the disclosure to those skilled in the art. In the description of the present disclosure, some detailed descriptions of the prior art are omitted when it is considered that the essence of the present disclosure may be unnecessarily obscured.
For example, the particular shapes, structures and characteristics described in this specification may be changed from one embodiment to another and implemented without departing from the spirit and scope of the present disclosure. Further, it is to be understood that the location or arrangement of individual elements within each embodiment may be modified without departing from the spirit and scope of the disclosure. It is, therefore, to be understood that the following detailed description is not to be taken in a limiting sense, and that the scope of the present disclosure includes the scope of the appended claims and all equivalents thereof. In the drawings, like numerals refer to the same or similar elements in many respects. That is, the specific details described are simple examples. Particular embodiments may differ from example details and may still be considered within the spirit and scope of the present disclosure.
Although terms such as "first," "second," and the like may be used to describe various components, these components are not necessarily limited by the above terms. The above terms are only used to distinguish one component from another component.
The terminology used in the description is for the purpose of describing the exemplary embodiments only and is not intended to be limiting of the inventive concepts. Unless the context clearly dictates otherwise, expressions used in the singular include expressions in the plural. In this specification, it will be understood that terms such as "including", "having", and "comprising" are intended to indicate the presence of the features, numbers, steps, actions, components, parts, or combinations thereof disclosed in the specification, and are not intended to preclude the possibility that one or more other features, numbers, steps, actions, components, parts, or combinations thereof may be present or may be added. Although terms such as "first," "second," and the like may be used to describe various components, these components are not necessarily limited by the above terms. The above terms are only used to distinguish one component from another component.
The present disclosure now will be described more fully hereinafter with reference to the accompanying drawings, in which example embodiments of the disclosure are shown. When the description is made with reference to the drawings, the same reference numerals denote the same or corresponding elements in the drawings, and a repetitive description thereof will be omitted.
Fig. 1 shows a configuration of a power supply evaluation apparatus 1 according to an embodiment.
Referring to fig. 1, the power evaluation apparatus 1 may include an input terminal unit 20, a voltage determination unit 30, a state holding unit 40, a power holding unit 50, a state display unit 60, and a state initialization unit 70.
The input terminal unit 20 according to the embodiment may include one or more terminals 21 and 22 for electrically connecting the power supply 10 to be evaluated and the power supply evaluation apparatus 1 according to the embodiment.
In this case, the power supply 10 to be evaluated may be a direct current power supply, and may be an alternating current power supply.
Although it is shown in fig. 1 that the power supply 10 to be evaluated and the power supply evaluation apparatus 1 are connected by using the two terminals 21 and 22, this is provided as an example, and the present disclosure is not limited thereto. The number of terminals may vary depending on the type and/or standard of the power supply 10 to be evaluated.
In addition, each of the terminals 21 and 22 may include various devices that can electrically connect the power supply 10 to be evaluated and the power supply evaluation apparatus 1. For example, where the power source 10 to be evaluated is a battery, the terminals 21 and 22 may include physical contact points that may contact the poles of the battery and thus be electrically connected to the battery. Further, in the case where the power source 10 to be evaluated supplies power in the form of a connector, the terminals 21 and 22 may include one of a female connector, a male connector, a wire harness, and a port.
However, this is provided as an example, and the present disclosure is not limited thereto. Any means may be used without limitation as long as the terminals 21 and 22 can electrically connect the power supply 10 to be evaluated and the power supply evaluation apparatus 1.
The power supply 10 to be evaluated and the power supply evaluation device 1 are electrically connected to each other through the input terminal unit 20, and evaluation of the power supply 10 to be evaluated (which will be described in detail below) can be performed. Further, since the power supply 10 to be evaluated supplies power to the power supply evaluation device 1, the voltage determination unit 30, the state holding unit 40, the power supply holding unit 50, the state display unit 60, and the state initialization unit 70 may operate.
In other words, the power supply evaluation apparatus 1 according to the embodiment can be supplied with power from the power supply 10 to be evaluated, and at the same time can evaluate the power supply 10 to be evaluated. Therefore, the present disclosure can evaluate the power supply 10 to be evaluated without supplying separate power to the power supply evaluation apparatus 1.
The voltage determination unit 30 according to the embodiment may determine whether the voltage of the power supply 10 to be evaluated satisfies a predetermined condition, and when the voltage of the power supply 10 to be evaluated satisfies the predetermined condition, the voltage determination unit 30 may output a first signal corresponding to satisfaction of the predetermined condition. For this purpose, the voltage determination unit 30 and the input terminal unit 20 may be electrically connected to each other. The input terminal unit 20 may be electrically connected to the power supply 10 to be evaluated.
Further, the "predetermined condition" may include a condition that the voltage of the power supply 10 to be evaluated is a predetermined threshold voltage or less. The "predetermined condition" may include a condition that the voltage of the power supply 10 to be evaluated is a predetermined threshold voltage or more, and may include a condition that the voltage of the power supply 10 to be evaluated belongs within a predetermined voltage section.
Hereinafter, although the description is made assuming that the "predetermined condition" is a condition that the voltage of the power supply 10 to be evaluated is a predetermined threshold voltage or less, the present disclosure is not limited thereto.
Further, when the voltage of the power supply 10 to be evaluated satisfies a predetermined condition, the voltage determining unit 30 may output a first signal corresponding to the predetermined condition being satisfied.
For example, taking as an example the case: the "predetermined condition" is a condition that the voltage of the power supply 10 to be evaluated exceeds a predetermined threshold voltage before the time point t3, is equal to or less than the predetermined threshold voltage from the time point t3 to the time point t4 (later than the time point t3), and exceeds the predetermined threshold voltage again from the time point t 4.
In this case, from the time point t3 to the time point t4, the voltage determination unit 30 may output a first signal indicating that a condition that the voltage of the power supply 10 to be evaluated is a preset threshold voltage or less is satisfied. In this case, more specifically, the first signal may be 5[ V ] (logic 1 or high) or 0[ V ] (logic 0 or low). In other words, the voltage determining unit 30 may output 0(1) before the time point t3, output 1 (or 0) from the time point t3 to the time point t4, and output 0(1) again from the time point t 4.
The threshold voltage, which is a reference value for determining whether the predetermined condition has been satisfied, may be set by a user. For example, when a battery output of 2.5[ V ] or less is to be detected relative to a battery output that normally requires a voltage output of 5[ V ], the threshold voltage may be set to 2.5[ V ].
Further, the voltage determining unit 30 may be implemented in various methods. For example, although the Voltage determining unit 30 may be implemented as an IC such as a Voltage monitor (Voltage super), this is provided as an example, and the present disclosure is not limited thereto.
The state holding unit 40 according to the embodiment may hold a state corresponding to the first signal output from the voltage determining unit 30, and in this case, the state holding unit 40 may output a second signal corresponding to the relevant state.
In more detail, when the voltage of the power supply 10 to be evaluated satisfies the predetermined condition and the voltage determination unit 30 thus outputs the first signal, the state maintaining unit 40 may change the state to a first state based on the first signal and maintain the first state, which is a state indicating that the voltage of the power supply 10 to be evaluated satisfies the predetermined condition. In this case, the state holding unit 40 may output the second signal corresponding to the first state.
Further, the state holding unit 40 may hold the second state before the first signal is input, and may hold the first state after the first signal is input. In this case, the second state may include a state indicating that a condition that the voltage of the power supply 10 to be evaluated exceeds a preset threshold voltage is satisfied.
Accordingly, the state holding unit 40 holds the second state as the base state, and may hold the first state after a point of time at which the voltage of the power supply 10 to be evaluated satisfies a predetermined condition.
For example, assume that as described in the example above: the "predetermined condition" is a condition that the voltage of the power supply 10 to be evaluated is a predetermined threshold voltage or less, the voltage of the power supply 10 to be evaluated exceeds the predetermined threshold voltage before the time point t3, is equal to or less than the predetermined threshold voltage from the time point t3 to the time point t4 (later than the time point t3), and exceeds the predetermined threshold voltage again from the time point t4, and accordingly, the voltage determining unit 30 outputs 0(1) before the time point t3, outputs 1 (or 0) from the time point t3 to the time point t4, and outputs 0(1) again from the time point t 4.
In this case, the state maintaining unit 40 may maintain the second state before the time point t3 and maintain the first state after the time point t 3. Accordingly, if the state of the state retaining unit 40 is changed to the first state due to the initial first signal, the state retaining unit 40 may retain the first state regardless of whether the voltage of the power supply 10 to be evaluated satisfies the predetermined condition.
Further, in embodiments, the "state" may be, in particular, 5[ V ] (logic 1 or high) or 0[ V ] (logic 0 or low). Further, the "hold" state may indicate that the state holding unit 40 holds a state of 5[ V ] (logic 1 or high) or 0[ V ] (logic 0 or low).
The state holding unit 40 may be implemented by various memory devices. For example, the state retaining unit 40 may be implemented by a storage device such as a flip-flop, a latch, or a memory. However, these are provided as examples, and the present disclosure is not limited thereto.
The power holding unit 50 may supply power to the state holding unit 40 when the state holding unit 40 is in the first state, and may be charged by the power supply 10 to be evaluated when the state holding unit 40 is in the second state.
For example, as in the above-described example, in such a case ("predetermined condition" is that the voltage of the power supply 10 to be evaluated is the preset threshold voltage or less, the voltage of the power supply 10 to be evaluated exceeds the preset threshold voltage before the time point t3, is equal to or less than the preset threshold voltage from the time point t3 to the time point t4, and exceeds the preset threshold voltage again from the time point t 4), since the power supply evaluation apparatus 1 is supplied with the electric power from the power supply 10 to be evaluated, the power supply evaluation apparatus 1 may not be supplied with the electric power from the time point t3 to the time point t 4.
In this case, the power holding unit 50 may be charged by the power source 10 to be evaluated before the time point t3, may supply power to the state holding unit 40 from the time point t3 to the time point t4, and may be charged again by the power source 10 to be evaluated after the time point t 4.
Accordingly, the power holding unit 50 may cause the state holding unit 40 to hold the current state (specifically, the first state indicating that the voltage of the power supply 10 to be evaluated satisfies the predetermined condition) without an error.
In addition, the power maintaining unit 50 may be implemented by various energy storage devices. For example, the power supply holding unit 50 may be implemented by a device (such as one or more capacitors, one or more inductors, or a battery) that can temporarily store electric energy and discharge the electric energy. However, these are provided as examples, and the present disclosure is not limited thereto.
The state initializing unit 70 according to the embodiment may change the state of the state holding unit 40 from the first state to the second state based on the input of the user and hold the state holding unit 40 in the second state.
As described above, if the state of the state retaining unit 40 has changed to the first state due to the initial first signal, the state of the state retaining unit 40 should be initialized to the second state to reuse the power supply evaluation apparatus 1 since the state retaining unit 40 retains the first state regardless of whether the voltage of the power supply 10 to be evaluated satisfies the predetermined condition.
The state initializing unit 70 may change the state of the state holding unit 40 to a second state (indicating that the voltage of the power supply 10 to be evaluated satisfies a predetermined condition) and hold the second state by applying an input to the state holding unit 40.
The input applied to the state maintaining unit 40 by the state initializing unit 70 to change the state maintaining unit 40 to the second state may be different according to the implementation method of the state maintaining unit 40. For example, in case the state retaining unit 40 comprises a flip-flop with an initialization port CLR, the retaining unit 40 may be changed to the second state by applying 5[ V ] (logic 1 or high) to the relevant port.
Further, although the state initialization unit 70 may include a device (such as a switch) receiving an input of a user, this is provided as an example, and the present disclosure is not limited thereto.
The state display unit 60 may display the evaluation result of the power supply 10 to be evaluated based on the second signal of the state holding unit 40.
In more detail, the state display unit 60 may include an illumination unit that blinks based on the second signal. In this case, the illumination unit may be turned off when the state maintaining unit 40 is in the first state, and may be turned on when the state maintaining unit 40 is in the second state.
In other words, the state display unit 60 causes the lighting unit to be turned on before the voltage of the power supply 10 to be evaluated satisfies the predetermined condition, and causes the lighting unit to be turned off after the voltage of the power supply 10 to be evaluated satisfies the predetermined condition, thereby allowing the user to more intuitively recognize whether the power supply 10 to be evaluated is normal.
However, this is provided as an example, the illumination unit may be turned on when the state retaining unit 40 is in the first state, and turned off when the state retaining unit 40 is in the second state.
Therefore, the present disclosure can more intuitively recognize whether the voltage of the power supply 10 to be evaluated satisfies the predetermined condition.
Fig. 2 is an example of a circuit configuration of a power source evaluation device according to an embodiment.
Referring to fig. 2, the power evaluation apparatus 1A may include input terminals 21A and 22A, a voltage determination unit 30A, a state holding unit 40A, a power holding unit 50A, a state display unit 60A, and a state initialization unit 70A.
The power supply 10A to be evaluated may comprise a dc power supply. The power supply 10A to be evaluated and the input terminals 21A and 22A may be electrically connected to each other for evaluating the power supply 10A to be evaluated.
The voltage determination unit 30A may be electrically connected to the input terminals 21A and 22A, and may determine whether the voltage of the power supply 10A to be evaluated satisfies a predetermined condition, and when the voltage of the power supply 10A to be evaluated satisfies the predetermined condition, the voltage determination unit 30A may output a first signal corresponding to satisfaction of the predetermined condition. In this case, more specifically, the first signal may include 5[ V ] (logic 1 or high) or 0[ V ] (logic 0 or low).
Further, as shown, the voltage determination unit 30A may be implemented as an IC such as a voltage monitor.
The state holding unit 40A may hold a state corresponding to the first signal output from the voltage determination unit 30A, and in this case, the state holding unit 40A may output a second signal corresponding to the relevant state. The state holding unit 40A may hold the second state before the first signal is input, and may hold the first state after the first signal is input. In this case, the second state may include a state indicating that a condition that the voltage of the power supply 10A to be evaluated exceeds a preset threshold voltage is satisfied. Therefore, the state holding unit 40A holds the second state as the base state, and may hold the first state after a point in time at which the voltage of the power supply 10A to be evaluated satisfies a predetermined condition.
Further, as shown, the state holding unit 40A may be implemented as a D flip-flop.
The power supply holding unit 50A may supply power to the state holding unit 40A when the state holding unit 40A is in the first state, and may be charged by the power supply 10A to be evaluated when the state holding unit 40A is in the second state.
The power supply holding unit 50A may cause the state holding unit 40A to hold the current state (specifically, the first state indicating that the voltage of the power supply 10A to be evaluated satisfies a predetermined condition).
The power holding unit 50A may be implemented by using an energy storage device such as a capacitor 52A and a diode 51A that prevents reverse current.
The state initializing unit 70A may change the state of the state holding unit 40A from the first state to the second state based on an input of the user and hold the state holding unit 40A in the second state.
As described above, if the state of the state retaining unit 40A has changed to the first state due to the initial first signal, the state of the state retaining unit 40A should be initialized to the second state to reuse the power supply evaluation device 1A since the state retaining unit 40A retains the first state regardless of whether the voltage of the power supply 10A to be evaluated satisfies the predetermined condition.
Accordingly, the state initializing unit 70A may change the state of the state holding unit 40A to the second state (indicating that the voltage of the power supply 10A to be evaluated satisfies the predetermined condition) and hold the second state by applying an input to the state holding unit 40A.
Further, the input applied to the state maintaining unit 40A by the state initializing unit 70A to change the state maintaining unit 40A to the second state may be different according to the implementation method of the state maintaining unit 40A. For example, in the case where the state retaining cell 40A includes a flip-flop having the initialization port n5, as in the present example, the state retaining cell 40A may be changed to the second state by applying 5[ V ] (logic 1 or high) to the relevant port n 5.
Further, although the state initialization unit 70A may include a device (such as a switch) that receives an input of a user, this is provided as an example, and the present disclosure is not limited thereto.
The state display unit 60A may display the evaluation result of the power supply 10A to be evaluated based on the second signal of the state holding unit 40A.
In more detail, the state display unit 60A may include an LED 61A that blinks based on the second signal. In this case, the illumination unit may be turned off when the state retaining unit 40A is in the first state, and may be turned on when the state retaining unit 40A is in the second state.
In other words, the state display unit 60A causes the illumination unit to be turned on before the voltage of the power supply 10A to be evaluated satisfies the predetermined condition, and causes the illumination unit to be turned off after the voltage of the power supply 10A to be evaluated satisfies the predetermined condition, thereby allowing the user to more intuitively recognize whether the power supply 10A to be evaluated is normal.
For the blinking of the LED 61A, the state display unit 60A may include an electronic switch 62A in addition to the LED 61A.
Fig. 3 is a view showing the state of each node n1 to n5 and an LED to explain the operation of the example circuit shown in fig. 2.
Referring to fig. 3, assume that: the voltage of the power supply 10A to be evaluated is dropped during the period from the time point t1 to the time point t2 and during the period from the time point t3 to the time point t4, and the voltage during the period from the time point t3 to the time point t4 is the threshold voltage or less.
Referring first to the voltage at the node n2, the voltage determination unit 30A may output a first signal indicating that a condition that the voltage of the power supply 10A to be evaluated is the threshold voltage or less is satisfied. In this case, the first signal may be 5[ V ] (logic 1 or high) as described above. In other words, the voltage determining unit 30A may output 0 before the time point t3, output 1 from the time point t3 to the time point t4, and output 0 again from the time point t 4.
Referring to the voltage at the node n3, the power supply holding unit 50A can hold a constant voltage although the voltage of the power supply 10A to be evaluated changes (see the voltage at the node n 1).
Then, referring to the voltage at the node n4 and the state of the LED 61A, the state holding unit 40A outputs a first signal (see the voltage at the node n 4) from the time when the voltage drops at the time point t3, and the LED 61A is turned off to display a condition that the voltage of the power supply 10A to be evaluated is the preset threshold voltage or less, wherein the first signal represents a condition that the voltage of the power supply 10A to be evaluated is the preset threshold voltage or less.
However, it is revealed that: in the case where the user changes the state of the state retaining unit 40A to the second state with reference to the voltage at the node n5, the voltage at the node n4 and the state of the LED 61A are initialized again.
The preferred embodiments have been described so far. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the essential characteristics of the present disclosure. The exemplary embodiments should be considered in descriptive sense only and not for purposes of limitation. Therefore, the scope of the present disclosure is defined not by the detailed description of the present disclosure but by the appended claims, and all differences within the scope of the present disclosure will be construed as being included in the present disclosure.
Claims (9)
1. A power supply evaluation apparatus for evaluating whether a power supply is normal, comprising:
an input terminal unit for electrically connecting with the power supply to be evaluated;
a voltage determination unit electrically connected to the input terminal unit and configured to determine whether a voltage of the power supply to be evaluated satisfies a predetermined condition, and output a first signal corresponding to satisfaction of the predetermined condition when the voltage satisfies the predetermined condition;
a state holding unit electrically connected to the voltage determination unit and configured to change a state to a first state corresponding to the first signal and output a second signal corresponding to the first state based on the first signal received from the voltage determination unit;
a power supply holding unit electrically connected to the input terminal unit and the state holding unit and configured to be charged by the power supply to be evaluated through the input terminal unit and supply power to the state holding unit, wherein the power supply holding unit includes a capacitor or an inductor; and
a state display unit electrically connected to the input terminal unit and the state holding unit, and configured to display an evaluation result of the power supply to be evaluated based on the second signal received from the state holding unit.
2. The power supply evaluation apparatus according to claim 1, wherein the predetermined condition is a condition that a voltage of the power supply to be evaluated is equal to or less than a preset threshold voltage, and
the first signal is a signal corresponding to a condition that the voltage is equal to or less than the threshold voltage set in advance is satisfied.
3. The power supply evaluation apparatus according to claim 2, wherein the first state is a state representing that a condition that the voltage is equal to or less than the threshold voltage set in advance is satisfied.
4. The power supply evaluation device according to claim 3, wherein the state holding unit is configured to hold a second state before the first signal is input and hold the first state after the first signal is input, and
the second state is a state indicating that a condition that the voltage exceeds the threshold voltage set in advance is satisfied.
5. The power source evaluation device of claim 4, further comprising:
a state initializing unit electrically connected to the state holding unit and the input terminal unit, and configured to change the state of the state holding unit to the second state and hold the second state based on an input of a user.
6. The power supply evaluation device according to claim 4, wherein the power supply holding unit is configured to supply power to the state holding unit when the state holding unit is in the first state and to be charged by the power supply to be evaluated when the state holding unit is in the second state.
7. The power supply evaluation device according to claim 4, wherein the status display unit includes an illumination unit that blinks based on the second signal, and
the illumination unit is turned Off (Off) when the state maintaining unit is in the first state, and is turned On (On) when the state maintaining unit is in the second state.
8. The power supply evaluation device of claim 1, wherein the power supply to be evaluated is a Direct Current (DC) power supply, and
the input terminal unit includes two input terminals electrically connected to the direct current power source.
9. The power supply evaluation apparatus according to claim 1, wherein the predetermined condition is a condition that a voltage of the power supply to be evaluated is equal to or greater than a preset threshold voltage, and
the first signal is a signal corresponding to a condition that the voltage is equal to or greater than the threshold voltage set in advance is satisfied.
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|---|---|---|---|
| KR10-2016-0167804 | 2016-12-09 | ||
| KR1020160167804A KR102257672B1 (en) | 2016-12-09 | 2016-12-09 | Power evaluating apparatus |
| PCT/KR2017/012580 WO2018105902A1 (en) | 2016-12-09 | 2017-11-08 | Power supply evaluation apparatus |
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| CN110050197A CN110050197A (en) | 2019-07-23 |
| CN110050197B true CN110050197B (en) | 2022-06-17 |
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| KR (1) | KR102257672B1 (en) |
| CN (1) | CN110050197B (en) |
| WO (1) | WO2018105902A1 (en) |
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| CN110488205B (en) | 2018-10-24 | 2021-02-26 | 新华三技术有限公司 | Fault recognition device |
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| Publication number | Publication date |
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| WO2018105902A1 (en) | 2018-06-14 |
| KR20180066684A (en) | 2018-06-19 |
| CN110050197A (en) | 2019-07-23 |
| KR102257672B1 (en) | 2021-05-28 |
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