CN111521952A - Synchronous rectification circuit, charger and synchronous rectification circuit control method and system - Google Patents
Synchronous rectification circuit, charger and synchronous rectification circuit control method and system Download PDFInfo
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- CN111521952A CN111521952A CN202010380604.9A CN202010380604A CN111521952A CN 111521952 A CN111521952 A CN 111521952A CN 202010380604 A CN202010380604 A CN 202010380604A CN 111521952 A CN111521952 A CN 111521952A
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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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
- G01R31/2832—Specific tests of electronic circuits not provided for elsewhere
- G01R31/2836—Fault-finding or characterising
- G01R31/2839—Fault-finding or characterising using signal generators, power supplies or circuit analysers
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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
- G01R31/2832—Specific tests of electronic circuits not provided for elsewhere
- G01R31/2836—Fault-finding or characterising
- G01R31/2843—In-circuit-testing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/44—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the rate of change of electrical quantities
Abstract
The invention belongs to the technical field of synchronous rectification circuits, and discloses a synchronous rectification circuit, a charger and a synchronous rectification circuit control method and system, wherein the synchronous rectification circuit, the charger and the synchronous rectification circuit control system comprise: the device comprises a current detection module, a voltage detection module, a temperature detection module, a main control module, a voltage regulation module, a circuit fault diagnosis module, a circuit test module, a synchronous rectification protection module, a data storage module, a power supply module and a display module. According to the invention, the circuit fault diagnosis module is used for projecting the defect point on the circuit board in a projection mode, so that maintenance personnel can conveniently position and maintain the defect of the circuit board; meanwhile, measuring a plurality of signal pins of the element to be tested by the test module under the condition that all elements in the element to be tested are not started; and accurately judging whether the element to be tested has leakage current according to the measurement result.
Description
Technical Field
The invention belongs to the technical field of synchronous rectification circuits, and particularly relates to a synchronous rectification circuit, a charger and a synchronous rectification circuit control method and system.
Background
The circuit refers to a conductive loop consisting of a metal wire and electric and electronic components, and is called a circuit. The power supply is added to the input end of the circuit to enable the input end to generate potential difference, and the circuit can work when being communicated. The presence of current can be measured by some instruments, such as voltmeter or ammeter deflection, bulb lighting, etc.; it is generally divided into two categories according to the nature of the current flowing through it: a circuit through which direct current passes is called a "direct current circuit", and a circuit through which alternating current passes is called an "alternating current circuit". However, the existing synchronous rectification circuit, charger and control method of the synchronous rectification circuit are not visual in circuit fault detection, which leads to the problems of complex maintenance process and low maintenance efficiency of maintenance personnel; meanwhile, it is not possible to accurately test whether the circuit leaks electricity.
In summary, the problems of the prior art are as follows: the existing synchronous rectification circuit, charger and synchronous rectification circuit control method are not visual in circuit fault detection, which leads to the problems of complex maintenance process and low maintenance efficiency of maintenance personnel; meanwhile, the overcurrent protection circuit in the prior art cannot accurately and quickly respond to sudden overcurrent and cannot accurately test whether the circuit leaks electricity.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a synchronous rectification circuit, a charger and a synchronous rectification circuit control method and system.
The invention is realized in such a way, a synchronous rectification circuit, a charger and a synchronous rectification circuit control method, comprising the following steps:
step one, controlling a voltage regulator to regulate the voltage of a synchronous rectification circuit through a single chip microcomputer: receiving, at a voltage regulator, an activity adjustment signal from a digital circuit; the activity adjustment signal indicates a predicted increase in current demand of the digital circuit, the output voltage increasing;
controlling one or more variable impedance elements of the voltage regulator to modify an output voltage provided to the digital circuit, wherein the output voltage is based at least in part on the activity adjustment signal;
step three, receiving a clock signal at the voltage regulator, wherein the clock signal is a phase-shifted version of a digital circuit clock signal, and the digital circuit is responsive to the digital circuit clock signal;
step four, after the voltage of the synchronous rectification circuit is adjusted based on the step one to the step three, a fault diagnosis circuit diagnoses fault signals of the synchronous rectification circuit by using a fault diagnosis program, and fault data of the circuit board is obtained by the diagnosis circuit;
step five, generating a fault diagram corresponding to the circuit board according to the fault data; wherein the fault map comprises: marking information for marking defective points on the circuit board;
step six, projecting the fault map to a target area through projection equipment; wherein the target area is used for placing the circuit board;
step seven, testing the leakage condition of the synchronous rectification circuit in the step one to the step three through the test equipment, and coupling a plurality of power supply pins in the element to be tested to a ground through the test equipment; the element to be tested is a packaged integrated circuit;
step eight, applying a test voltage on a first signal pin in a plurality of signal pins of the element to be tested; the test voltage is less than a preset value;
step nine, measuring the current on a second signal pin in the signal pins of the element to be tested, and judging whether the element to be tested has leakage current or not according to the current; during the process of measuring the element to be measured, all elements in the element to be measured are not started;
step ten, the synchronous rectification circuit in the step one to the step three is protected again through a synchronous rectification protection device, and a first current change rate of the protected circuit is obtained;
step eleven, judging whether the first current change rate exceeds a first preset current threshold value;
step twelve, when the first current change rate exceeds a first preset current threshold, calculating a second current change rate according to the current signal and a delayed current signal obtained by delaying the current signal;
step thirteen, judging whether the second current change rate exceeds a second preset current threshold value;
and step fourteen, when the second current change rate exceeds a second preset current threshold value, executing a protection action.
Further, before the step one, the following steps are required: step I, detecting current data of the synchronous rectification circuit through a current detector;
step II, detecting voltage data of the synchronous rectification circuit through a voltage detector;
and III, detecting the temperature data of the synchronous rectification circuit through a temperature sensor.
Further, in step one, the activity adjustment signal indicates a number of threads running on the digital circuit, a number of instructions to be executed during one or more subsequent clock cycles, a type of instruction to be executed during one or more subsequent clock cycles, an interrupt signal associated with transitioning the digital circuit from a sleep state to an awake state, a cache miss read event, or a combination thereof.
Further, in the fourth step, the acquiring fault data of the circuit board by the diagnosis circuit includes:
acquiring a board card identifier of the circuit board;
and searching the fault data of the circuit board from automatic optical detection equipment according to the board card identification of the circuit board.
Further, the fault data of the circuit board at least comprises: generating a fault map corresponding to the circuit board according to the fault data at the position of the defect point of the circuit board and the size of each defect point, wherein the fault map comprises the following steps:
determining the size of the background image according to the size of the circuit board;
marking the defect points in the background map according to the positions of the defect points and the sizes of the defect points;
filling the background map with a first color;
and filling the defect points with a second color to obtain the fault map, wherein the first color is different from the second color.
Further, in step six, after the fault map is projected to the target area by the projection device, the method further includes:
receiving an adjusting instruction;
and according to the adjustment instruction, performing one or more of the following adjustments on a projection diagram obtained by projecting the fault diagram:
adjusting the size of the projection drawing according to the size of the circuit board;
performing trapezoidal correction on the projection drawing;
and adjusting the projection position of the projection diagram according to the position of the circuit board.
Further, in step ten, the method for protecting the synchronous rectification circuit by the synchronous rectification protection device further includes:
when the first current change rate does not exceed a first preset current threshold value, calculating the current power of the protected circuit;
judging whether the current power exceeds a preset power threshold value;
when the current power exceeds a preset power threshold value, executing a protection action;
the step of calculating the second current change rate according to the current signal and the delayed current signal obtained by delaying the current signal includes:
calculating a current difference value of the current signal and the delayed current signal;
differentiating the current difference value with the time delay to obtain the second current change rate;
after the fourteenth step, the following steps are required:
step 1, storing the detected current, voltage, fault diagnosis result and real-time data of the test result of the synchronous rectification circuit through a memory;
and 3, displaying the detected current, voltage, fault diagnosis result and real-time data of the test result of the synchronous rectification circuit through a display.
Another object of the present invention is to provide a synchronous rectification circuit, a charger, and a synchronous rectification circuit control system using the synchronous rectification circuit, the charger, and the synchronous rectification circuit control method, wherein the synchronous rectification circuit, the charger, and the synchronous rectification circuit control system include:
the device comprises a current detection module, a voltage detection module, a temperature detection module, a main control module, a voltage regulation module, a circuit fault diagnosis module, a circuit test module, a synchronous rectification protection module, a data storage module, a power supply module and a display module.
The current detection module is connected with the main control module and used for detecting current data of the synchronous rectification circuit through the current detector;
the voltage detection module is connected with the main control module and used for detecting voltage data of the synchronous rectification circuit through the voltage detector;
the temperature detection module is connected with the main control module and used for detecting the temperature data of the synchronous rectification circuit through a temperature sensor;
the main control module is connected with the current detection module, the voltage detection module, the temperature detection module, the voltage regulation module, the circuit fault diagnosis module, the circuit test module, the synchronous rectification protection module, the data storage module, the power supply module and the display module and is used for controlling each module to normally work through the single chip microcomputer;
the voltage regulating module is connected with the main control module and used for regulating the voltage of the synchronous rectification circuit through the voltage regulator;
the circuit fault diagnosis module is connected with the main control module and used for diagnosing a fault signal of the synchronous rectification circuit by utilizing a fault diagnosis program through the fault diagnosis circuit;
the circuit testing module is connected with the main control module and used for testing the electric leakage condition of the synchronous rectification circuit through testing equipment;
the synchronous rectification protection module is connected with the main control module and used for protecting the synchronous rectification circuit through the synchronous rectification protection device;
the data storage module is connected with the main control module and used for storing the detected current, voltage, fault diagnosis result and real-time data of the test result of the synchronous rectification circuit through the memory;
the power supply module is connected with the main control module and used for providing electric energy for the synchronous rectification circuit and the charger through the solar cell panel;
and the display module is connected with the main control module and used for displaying the detected current, voltage, fault diagnosis result and real-time data of the test result of the synchronous rectification circuit through the display.
Another object of the present invention is to provide a computer program product stored on a computer readable medium, which includes a computer readable program for providing a user input interface to implement the synchronous rectification circuit, the charger and the synchronous rectification circuit control method when the computer program product is executed on an electronic device.
Another object of the present invention is to provide a computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to execute the synchronous rectification circuit, the charger, and the synchronous rectification circuit control method.
The invention has the advantages and positive effects that: the method comprises the steps of obtaining fault data of a circuit board through a circuit fault diagnosis module, generating a fault diagram corresponding to the circuit board according to the fault data, and projecting the fault diagram to a target area through projection equipment, wherein the target area is used for placing the circuit board; the defect points are projected on the circuit board in a projection mode without an unavailable mechanical structure, so that maintenance personnel can conveniently position and maintain the defects of the circuit board; meanwhile, measuring a plurality of signal pins of the element to be tested by the test module under the condition that all elements in the element to be tested are not started; and accurately judging whether the element to be tested has leakage current according to the measurement result.
The synchronous rectification protection module provided by the invention detects the current change rate of the protected circuit in real time, if the current change rate is greater than the first preset current change rate, the sudden overcurrent possibly occurs in the protected circuit, calculates the second current change rate in a time delay mode, and performs protection action on the protected circuit according to the value of the second current change rate, so that the defect that the overcurrent protection circuit in the prior art cannot accurately and quickly respond to the sudden overcurrent is overcome, and the damage of the sudden overcurrent to the protected circuit is avoided.
Drawings
Fig. 1 is a flowchart of a synchronous rectification circuit, a charger, and a control method of the synchronous rectification circuit according to an embodiment of the present invention.
Fig. 2 is a block diagram of a synchronous rectification circuit, a charger, and a synchronous rectification circuit control system according to an embodiment of the present invention;
in the figure: 1. a current detection module; 2. a voltage detection module; 3. a temperature detection module; 4. a main control module; 5. a voltage regulation module; 6. a circuit fault diagnosis module; 7. a circuit test module; 8. a synchronous rectification protection module; 9. a data storage module; 10. a power supply module; 11. and a display module.
Fig. 3 is a flowchart of a method for regulating a voltage of a synchronous rectification circuit according to an embodiment of the present invention.
Fig. 4 is a flowchart of a method for diagnosing a fault signal of a synchronous rectification circuit according to an embodiment of the present invention.
Fig. 5 is a flowchart of a method for testing a leakage condition of a synchronous rectification circuit according to an embodiment of the present invention.
Fig. 6 is a flowchart of a method for protecting a synchronous rectification circuit according to an embodiment of the present invention.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.
The structure of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the synchronous rectification circuit, the charger, and the control method of the synchronous rectification circuit according to the embodiment of the present invention include the following steps:
s101, detecting current data of the synchronous rectification circuit through a current detector; the voltage data of the synchronous rectification circuit is detected by a voltage detector.
S102, detecting temperature data of the synchronous rectification circuit through a temperature sensor; the normal work of the synchronous rectification circuit, the charger and the synchronous rectification circuit control system is controlled by the single chip microcomputer.
S103, regulating the voltage of the synchronous rectification circuit through a voltage regulator; a fault signal of the synchronous rectification circuit is diagnosed by a fault diagnosis circuit using a fault diagnosis program.
S104, testing the electric leakage condition of the synchronous rectification circuit through testing equipment; the synchronous rectification circuit is protected by the synchronous rectification protection device.
S105, storing the detected current, voltage, fault diagnosis result and real-time data of the test result of the synchronous rectification circuit through a memory; and the solar panel provides electric energy for the synchronous rectification circuit and the charger.
And S106, displaying the detected current, voltage, fault diagnosis result and real-time data of the test result of the synchronous rectification circuit through the display.
As shown in fig. 2, a synchronous rectification circuit, a charger, and a synchronous rectification circuit control system according to an embodiment of the present invention include: the device comprises a current detection module 1, a voltage detection module 2, a temperature detection module 3, a main control module 4, a voltage regulation module 5, a circuit fault diagnosis module 6, a circuit test module 7, a synchronous rectification protection module 8, a data storage module 9, a power supply module 10 and a display module 11.
And the current detection module 1 is connected with the main control module 4 and is used for detecting current data of the synchronous rectification circuit through the current detector.
And the voltage detection module 2 is connected with the main control module 4 and is used for detecting the voltage data of the synchronous rectification circuit through the voltage detector.
And the temperature detection module 3 is connected with the main control module 4 and is used for detecting the temperature data of the synchronous rectification circuit through a temperature sensor.
The main control module 4 is connected with the current detection module 1, the voltage detection module 2, the temperature detection module 3, the voltage regulation module 5, the circuit fault diagnosis module 6, the circuit test module 7, the synchronous rectification protection module 8, the data storage module 9, the power supply module 10 and the display module 11, and is used for controlling each module to normally work through a single chip microcomputer.
And the voltage regulating module 5 is connected with the main control module 4 and used for regulating the voltage of the synchronous rectification circuit through the voltage regulator.
And the circuit fault diagnosis module 6 is connected with the main control module 4 and is used for diagnosing a fault signal of the synchronous rectification circuit by using a fault diagnosis program through the fault diagnosis circuit.
And the circuit testing module 7 is connected with the main control module 4 and used for testing the electric leakage condition of the synchronous rectification circuit through testing equipment.
And the synchronous rectification protection module 8 is connected with the main control module 4 and used for protecting the synchronous rectification circuit through the synchronous rectification protection device.
And the data storage module 9 is connected with the main control module 4 and is used for storing the detected current, voltage, fault diagnosis result and real-time data of the test result of the synchronous rectification circuit through a memory.
And the power supply module 10 is connected with the main control module 4 and used for providing electric energy for the synchronous rectification circuit and the charger through the solar cell panel.
And the display module 11 is connected with the main control module 4 and is used for displaying the detected current, voltage, fault diagnosis result and real-time data of the test result of the synchronous rectification circuit through a display.
The invention is further described with reference to specific examples.
Example 1
The synchronous rectification circuit, the charger and the control method of the synchronous rectification circuit provided by the embodiment of the invention are shown in figure 1, and as a preferred embodiment, as shown in figure 3, the method for controlling the voltage regulator to regulate the voltage of the synchronous rectification circuit through the singlechip comprises the following steps:
s201, receiving an activity adjustment signal from a digital circuit at a voltage regulator; the activity adjustment signal indicates a predicted increase in current demand of the digital circuit, the output voltage increasing.
S202, controlling one or more variable impedance elements of the voltage regulator to modify an output voltage provided to the digital circuit, wherein the output voltage is based at least in part on the activity adjustment signal.
S203, receiving a clock signal at the voltage regulator, wherein the clock signal is a phase-shifted version of a digital circuit clock signal, and wherein the digital circuit is responsive to the digital circuit clock signal.
The activity adjustment signal provided by embodiments of the present invention indicates a number of threads running on the digital circuit, a number of instructions to be executed during one or more subsequent clock cycles, a type of instruction to be executed during one or more subsequent clock cycles, an interrupt signal associated with the digital circuit transitioning from a sleep state to an awake state, a cache miss read event, or a combination thereof.
Example 2
Fig. 1 shows a synchronous rectifier circuit, a charger, and a method for controlling a synchronous rectifier circuit, which are provided in an embodiment of the present invention, and fig. 4 shows a preferred embodiment, where a method for diagnosing a fault signal of a synchronous rectifier circuit by a fault diagnosis program through a fault diagnosis circuit, which is provided in an embodiment of the present invention, includes:
s301, fault data of the circuit board are obtained through the diagnosis circuit.
S302, generating a fault diagram corresponding to the circuit board according to the fault data; wherein the fault map comprises: marking information for marking defective points on the circuit board.
S303, projecting the fault map to a target area through projection equipment; wherein the target area is used for placing the circuit board.
The method for acquiring the fault data of the circuit board through the diagnosis circuit comprises the following steps:
and acquiring a board card identifier of the circuit board.
And searching the fault data of the circuit board from automatic optical detection equipment according to the board card identification of the circuit board.
The fault data of the circuit board provided by the embodiment of the invention at least comprises the following steps: generating a fault map corresponding to the circuit board according to the fault data at the position of the defect point of the circuit board and the size of each defect point, wherein the fault map comprises the following steps:
the size of the background map is determined according to the size of the circuit board.
And marking the defect points in the background image according to the positions and the sizes of the defect points.
The background map is filled in with a first color.
And filling the defect points with a second color to obtain the fault map, wherein the first color is different from the second color.
After the fault map is projected to the target area through the projection device, the method provided by the embodiment of the invention further comprises the following steps:
an adjustment instruction is received.
And according to the adjustment instruction, performing one or more of the following adjustments on a projection diagram obtained by projecting the fault diagram:
and adjusting the size of the projection drawing according to the size of the circuit board.
And performing trapezoidal correction on the projection drawing.
And adjusting the projection position of the projection diagram according to the position of the circuit board.
Example 3
The synchronous rectification circuit, the charger and the control method of the synchronous rectification circuit provided by the embodiment of the invention are shown in fig. 1, and as a preferred embodiment, as shown in fig. 5, the method for testing the leakage condition of the synchronous rectification circuit through the test equipment provided by the embodiment of the invention comprises the following steps:
s401, a plurality of power pins in the device under test are coupled to a ground through the test equipment. The device under test is a packaged integrated circuit.
S402, a test voltage is applied to a first signal pin of the plurality of signal pins of the DUT. The test voltage is less than a predetermined value.
S403, measure a current on a second signal pin of the signal pins of the dut, and accordingly determine whether the dut has a leakage current. During the process of measuring the device to be measured, none of the devices in the device to be measured is turned on.
Example 4
Fig. 1 shows a synchronous rectification circuit, a charger, and a method for controlling a synchronous rectification circuit, which are provided in an embodiment of the present invention, and fig. 6 shows a preferred embodiment, where the method for protecting a synchronous rectification circuit by using a synchronous rectification protection device, which is provided in an embodiment of the present invention, includes:
s501, obtaining a first current change rate of a protected circuit.
S502, judging whether the first current change rate exceeds a first preset current threshold value.
And S503, when the first current change rate exceeds a first preset current threshold, calculating a second current change rate according to the current signal and a delayed current signal obtained by delaying the current signal.
S504, judging whether the second current change rate exceeds a second preset current threshold value.
And S505, when the second current change rate exceeds a second preset current threshold value, executing a protection action.
The method for protecting the synchronous rectification circuit through the synchronous rectification protection device provided by the embodiment of the invention further comprises the following steps:
and when the first current change rate does not exceed a first preset current threshold value, calculating the current power of the protected circuit.
And judging whether the current power exceeds a preset power threshold value.
And when the current power exceeds a preset power threshold value, executing a protection action.
The step of calculating the second current change rate according to the current signal and the delayed current signal obtained by delaying the current signal provided by the embodiment of the invention comprises the following steps:
and calculating the current difference value of the current signal and the delayed current signal.
And differentiating the delayed time by the current difference value to obtain the second current change rate.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When used in whole or in part, can be implemented in a computer program product that includes one or more computer instructions. When loaded or executed on a computer, cause the flow or functions according to embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL), or wireless (e.g., infrared, wireless, microwave, etc.)). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. A synchronous rectification circuit, a charger and a control method of the synchronous rectification circuit are characterized by comprising the following steps:
step one, controlling a voltage regulator to regulate the voltage of a synchronous rectification circuit through a single chip microcomputer: receiving, at a voltage regulator, an activity adjustment signal from a digital circuit; the activity adjustment signal indicates a predicted increase in current demand of the digital circuit, the output voltage increasing;
controlling one or more variable impedance elements of the voltage regulator to modify an output voltage provided to the digital circuit, wherein the output voltage is based at least in part on the activity adjustment signal;
step three, receiving a clock signal at the voltage regulator, wherein the clock signal is a phase-shifted version of a digital circuit clock signal, and the digital circuit is responsive to the digital circuit clock signal;
step four, after the voltage of the synchronous rectification circuit is adjusted based on the step one to the step three, a fault diagnosis circuit diagnoses fault signals of the synchronous rectification circuit by using a fault diagnosis program, and fault data of the circuit board is obtained by the diagnosis circuit;
step five, generating a fault diagram corresponding to the circuit board according to the fault data; wherein the fault map comprises: marking information for marking defective points on the circuit board;
step six, projecting the fault map to a target area through projection equipment; wherein the target area is used for placing the circuit board;
step seven, testing the leakage condition of the synchronous rectification circuit in the step one to the step three through the test equipment, and coupling a plurality of power supply pins in the element to be tested to a ground through the test equipment; the element to be tested is a packaged integrated circuit;
step eight, applying a test voltage on a first signal pin in a plurality of signal pins of the element to be tested; the test voltage is less than a preset value;
step nine, measuring the current on a second signal pin in the signal pins of the element to be tested, and judging whether the element to be tested has leakage current or not according to the current; during the process of measuring the element to be measured, all elements in the element to be measured are not started;
step ten, the synchronous rectification circuit in the step one to the step three is protected again through a synchronous rectification protection device, and a first current change rate of the protected circuit is obtained;
step eleven, judging whether the first current change rate exceeds a first preset current threshold value;
step twelve, when the first current change rate exceeds a first preset current threshold, calculating a second current change rate according to the current signal and a delayed current signal obtained by delaying the current signal;
step thirteen, judging whether the second current change rate exceeds a second preset current threshold value;
and step fourteen, when the second current change rate exceeds a second preset current threshold value, executing a protection action.
2. The synchronous rectification circuit, the charger and the control method of the synchronous rectification circuit as claimed in claim 1, wherein before the step one, the steps of: step I, detecting current data of the synchronous rectification circuit through a current detector;
step II, detecting voltage data of the synchronous rectification circuit through a voltage detector;
and III, detecting the temperature data of the synchronous rectification circuit through a temperature sensor.
3. The synchronous rectification circuit, the charger, and the synchronous rectification circuit control method of claim 1 wherein in step one, the activity adjustment signal indicates a number of threads running on the digital circuit, a number of instructions to be executed during one or more subsequent clock cycles, a type of instructions to be executed during one or more subsequent clock cycles, an interrupt signal associated with the digital circuit transitioning from a sleep state to an awake state, a cache miss read event, or a combination thereof.
4. The synchronous rectification circuit, the charger and the control method of the synchronous rectification circuit as claimed in claim 1, wherein in step four, the obtaining of the fault data of the circuit board by the diagnosis circuit comprises:
acquiring a board card identifier of the circuit board;
and searching the fault data of the circuit board from automatic optical detection equipment according to the board card identification of the circuit board.
5. The synchronous rectification circuit, the charger and the synchronous rectification circuit control method according to claim 4, wherein the fault data of the circuit board at least includes: generating a fault map corresponding to the circuit board according to the fault data at the position of the defect point of the circuit board and the size of each defect point, wherein the fault map comprises the following steps:
determining the size of the background image according to the size of the circuit board;
marking the defect points in the background map according to the positions of the defect points and the sizes of the defect points;
filling the background map with a first color;
and filling the defect points with a second color to obtain the fault map, wherein the first color is different from the second color.
6. The synchronous rectification circuit, the charger, and the synchronous rectification circuit control method according to claim 1, wherein in step six, after the fault map is projected to a target area by a projection device, the method further comprises:
receiving an adjusting instruction;
and according to the adjustment instruction, performing one or more of the following adjustments on a projection diagram obtained by projecting the fault diagram:
adjusting the size of the projection drawing according to the size of the circuit board;
performing trapezoidal correction on the projection drawing;
and adjusting the projection position of the projection diagram according to the position of the circuit board.
7. The synchronous rectification circuit, the charger, and the control method of the synchronous rectification circuit as claimed in claim 1, wherein in step ten, the method of protecting the synchronous rectification circuit by the synchronous rectification protection device further comprises:
when the first current change rate does not exceed a first preset current threshold value, calculating the current power of the protected circuit;
judging whether the current power exceeds a preset power threshold value;
when the current power exceeds a preset power threshold value, executing a protection action;
the step of calculating the second current change rate according to the current signal and the delayed current signal obtained by delaying the current signal includes:
calculating a current difference value of the current signal and the delayed current signal;
differentiating the current difference value with the time delay to obtain the second current change rate;
after the fourteenth step, the following steps are required:
step 1, storing the detected current, voltage, fault diagnosis result and real-time data of the test result of the synchronous rectification circuit through a memory;
step 2, providing electric energy for the synchronous rectification circuit and the charger through the solar panel;
and 3, displaying the detected current, voltage, fault diagnosis result and real-time data of the test result of the synchronous rectification circuit through a display.
8. A synchronous rectification circuit, a charger, and a synchronous rectification circuit control system to which the synchronous rectification circuit, the charger, and the synchronous rectification circuit control method according to any one of claims 1 to 7 are applied, characterized by comprising:
the device comprises a current detection module, a voltage detection module, a temperature detection module, a main control module, a voltage regulation module, a circuit fault diagnosis module, a circuit test module, a synchronous rectification protection module, a data storage module, a power supply module and a display module;
the current detection module is connected with the main control module and used for detecting current data of the synchronous rectification circuit through the current detector;
the voltage detection module is connected with the main control module and used for detecting voltage data of the synchronous rectification circuit through the voltage detector;
the temperature detection module is connected with the main control module and used for detecting the temperature data of the synchronous rectification circuit through a temperature sensor;
the main control module is connected with the current detection module, the voltage detection module, the temperature detection module, the voltage regulation module, the circuit fault diagnosis module, the circuit test module, the synchronous rectification protection module, the data storage module, the power supply module and the display module and is used for controlling each module to normally work through the single chip microcomputer;
the voltage regulating module is connected with the main control module and used for regulating the voltage of the synchronous rectification circuit through the voltage regulator;
the circuit fault diagnosis module is connected with the main control module and used for diagnosing a fault signal of the synchronous rectification circuit by utilizing a fault diagnosis program through the fault diagnosis circuit;
the circuit testing module is connected with the main control module and used for testing the electric leakage condition of the synchronous rectification circuit through testing equipment;
the synchronous rectification protection module is connected with the main control module and used for protecting the synchronous rectification circuit through the synchronous rectification protection device;
the data storage module is connected with the main control module and used for storing the detected current, voltage, fault diagnosis result and real-time data of the test result of the synchronous rectification circuit through the memory;
the power supply module is connected with the main control module and used for providing electric energy for the synchronous rectification circuit and the charger through the solar cell panel;
and the display module is connected with the main control module and used for displaying the detected current, voltage, fault diagnosis result and real-time data of the test result of the synchronous rectification circuit through the display.
9. A computer program product stored on a computer readable medium, comprising a computer readable program for providing a user input interface to implement the synchronous rectification circuit, the charger and the synchronous rectification circuit control method as claimed in any one of claims 1 to 7 when executed on an electronic device.
10. A computer-readable storage medium storing instructions which, when executed on a computer, cause the computer to execute the synchronous rectification circuit, the charger, and the synchronous rectification circuit control method according to any one of claims 1 to 7.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11768237B2 (en) | 2022-05-10 | 2023-09-26 | Google Llc | Leakage screening based on use-case power prediction |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105027210A (en) * | 2013-03-15 | 2015-11-04 | 高通股份有限公司 | Voltage regulator |
| CN106712483A (en) * | 2017-02-28 | 2017-05-24 | 维沃移动通信有限公司 | Synchronous rectification circuit, charger and protection method of charger |
| CN108196154A (en) * | 2017-12-04 | 2018-06-22 | 西北工业大学 | Aviation three-level formula synchronous motor rotating rectifier faults monitoring and Fault Locating Method |
| CN108572310A (en) * | 2017-03-07 | 2018-09-25 | 慧荣科技股份有限公司 | circuit testing method |
| CN109029975A (en) * | 2018-06-26 | 2018-12-18 | 红河学院 | A kind of method for diagnosing faults of wind turbine gearbox |
| CN109142380A (en) * | 2018-09-19 | 2019-01-04 | 广州视源电子科技股份有限公司 | The fault detection method of circuit board, device and system |
| CN109586242A (en) * | 2017-09-29 | 2019-04-05 | 昆山国显光电有限公司 | Circuit protection method, protection circuit and circuit protection device |
| CN110187210A (en) * | 2019-06-04 | 2019-08-30 | 沈阳城市建设学院 | A kind of electric automatization equipment automatic checkout system and detection method |
-
2020
- 2020-05-08 CN CN202010380604.9A patent/CN111521952A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105027210A (en) * | 2013-03-15 | 2015-11-04 | 高通股份有限公司 | Voltage regulator |
| CN106712483A (en) * | 2017-02-28 | 2017-05-24 | 维沃移动通信有限公司 | Synchronous rectification circuit, charger and protection method of charger |
| CN108572310A (en) * | 2017-03-07 | 2018-09-25 | 慧荣科技股份有限公司 | circuit testing method |
| CN109586242A (en) * | 2017-09-29 | 2019-04-05 | 昆山国显光电有限公司 | Circuit protection method, protection circuit and circuit protection device |
| CN108196154A (en) * | 2017-12-04 | 2018-06-22 | 西北工业大学 | Aviation three-level formula synchronous motor rotating rectifier faults monitoring and Fault Locating Method |
| CN109029975A (en) * | 2018-06-26 | 2018-12-18 | 红河学院 | A kind of method for diagnosing faults of wind turbine gearbox |
| CN109142380A (en) * | 2018-09-19 | 2019-01-04 | 广州视源电子科技股份有限公司 | The fault detection method of circuit board, device and system |
| CN110187210A (en) * | 2019-06-04 | 2019-08-30 | 沈阳城市建设学院 | A kind of electric automatization equipment automatic checkout system and detection method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11768237B2 (en) | 2022-05-10 | 2023-09-26 | Google Llc | Leakage screening based on use-case power prediction |
| TWI827234B (en) * | 2022-05-10 | 2023-12-21 | 美商谷歌有限責任公司 | Leakage screening based on use-case power prediction |
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