CN117394698A - H-bridge power supply circuit control method, device and medium - Google Patents
H-bridge power supply circuit control method, device and medium Download PDFInfo
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- CN117394698A CN117394698A CN202311707987.6A CN202311707987A CN117394698A CN 117394698 A CN117394698 A CN 117394698A CN 202311707987 A CN202311707987 A CN 202311707987A CN 117394698 A CN117394698 A CN 117394698A
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- 238000000034 method Methods 0.000 title claims abstract description 56
- 238000001514 detection method Methods 0.000 claims abstract description 91
- 230000002159 abnormal effect Effects 0.000 claims abstract description 41
- 238000004590 computer program Methods 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000013473 artificial intelligence Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010801 machine learning Methods 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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- 230000001052 transient effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33573—Full-bridge at primary side of an isolation transformer
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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
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
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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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0009—Devices or circuits for detecting current in a converter
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Power Sources (AREA)
Abstract
The application relates to the field of electronic circuits and discloses a control method, a device and a medium of an H-bridge power supply circuit, wherein the control method comprises the following steps: acquiring circuit detection information sent by a detection circuit; judging whether the H-bridge power supply circuit is in an abnormal working state according to the circuit detection information; if the power supply is in an abnormal working state, acquiring circuit information of an H-bridge power supply circuit; determining a safe working voltage according to the circuit information and the circuit detection information; and supplying power to the switching tube of the H-bridge power supply circuit according to the safe working voltage so as to control the H-bridge power supply circuit to work. When the H-bridge power supply circuit is detected to be in an abnormal working state, the safe working voltage is determined according to the circuit information and the circuit detection information, and the switching tube of the H-bridge power supply circuit is powered according to the safe working voltage, so that the impedance of the switching tube of the H-bridge power supply circuit is increased, the damage of the H-bridge power supply circuit caused by overlarge current of the switching tube due to the short circuit of the rear end circuit is prevented, and the safety and the reliability of the circuit are improved.
Description
Technical Field
The present disclosure relates to the field of electronic circuits, and in particular, to a method, an apparatus, and a medium for controlling an H-bridge power supply circuit.
Background
The H bridge circuit is composed of 4 switching devices and a load, wherein the 4 switching devices form left and right vertical bars of an H, the load is a horizontal bar of the H, and the circuit is named as an H bridge because the circuit is shaped as the H. Fig. 1 is a schematic diagram of an H-bridge circuit, as shown in fig. 1, that supplies power to a back-end device through a transformer. When the circuit is started, if the back-end circuit is short-circuited, the current of the power tube of the H-bridge power supply may be too large, and the power tube may be burnt.
Therefore, how to provide a control method for an H-bridge power supply circuit to prevent the H-bridge power supply from being damaged due to the short circuit of the back-end circuit is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The purpose of this application is in order to solve among the H bridge power supply circuit because the transformer rear end circuit takes place the short circuit, leads to the too big condition of burning out the power tube of electric current among the transformer front end circuit, consequently, this application provides a H bridge power supply circuit control method, device, medium to improve H bridge power supply circuit's security and reliability.
In order to solve the above technical problems, the present application provides a control method of an H-bridge power supply circuit, including:
acquiring circuit detection information sent by a detection circuit; the detection circuit is used for detecting the working states of the H-bridge power supply circuit and the back-end circuit;
judging whether the H-bridge power supply circuit is in an abnormal working state according to the circuit detection information;
if the power supply is in the abnormal working state, acquiring the circuit information of the H-bridge power supply circuit;
determining a safe working voltage according to the circuit information and the circuit detection information; the safe working voltage is a voltage which enables the impedance of the H-bridge power supply circuit to be larger than an impedance threshold value;
and supplying power to a switching tube of the H-bridge power supply circuit according to the safe working voltage so as to control the H-bridge power supply circuit to work.
Preferably, the circuit information includes switching tube parameter information and circuit specification information;
the determining a safe operating voltage based on the circuit information and the circuit detection information includes:
analyzing the circuit detection information to obtain a detection current value;
determining a target impedance value according to the circuit specification information; the target impedance value is an impedance value which enables the H-bridge power supply circuit to work normally under the detection current value;
and determining the safe working voltage corresponding to the target impedance value in a starting voltage database according to the switching tube parameter information.
Preferably, after the step of supplying power to the switching tube of the H-bridge power supply circuit according to the safe operating voltage, the method further includes:
judging whether the H-bridge power supply circuit is always in the abnormal working state in a detection period;
and if the power supply circuit is always in the abnormal working state, controlling the H-bridge power supply circuit to be turned off.
Preferably, the method further comprises:
when a power supply starting instruction is acquired, determining a safe starting voltage according to the circuit specification information and the switching tube parameter information;
and supplying power to each switching tube according to the safe starting voltage so as to control the starting of the H-bridge power supply circuit.
Preferably, the method further comprises:
testing the switching tubes with different specifications to determine the corresponding relation between the driving voltage and the impedance of each switching tube in different circuits;
and storing the corresponding relation between the driving voltage and the impedance into the starting voltage database.
Preferably, after the step of controlling the H-bridge power supply circuit to be turned off, the method further includes:
after a first preset time, supplying power to each switching tube according to the safety starting voltage;
judging whether the working current of the H-bridge power supply circuit in the detection period is always smaller than a current threshold value or not;
and if the current threshold value is smaller than the current threshold value, determining the standard working voltage of the H-bridge power supply circuit according to the starting voltage database, and supplying power to each switching tube according to the standard working voltage.
Preferably, after the step of controlling the H-bridge power supply circuit to be turned off, the method further includes:
and sending alarm information to staff, and generating an abnormal work log according to the circuit detection information and the safe working voltage.
In order to solve the technical problem, the present application further provides an H-bridge power supply circuit control device, including:
the first acquisition module is used for acquiring circuit detection information sent by the detection circuit; the detection circuit is used for detecting the working states of the H-bridge power supply circuit and the back-end circuit;
the judging module is used for judging whether the H-bridge power supply circuit is in an abnormal working state according to the circuit detection information;
the second acquisition module is used for acquiring the circuit information of the H-bridge power supply circuit if the second acquisition module is in the abnormal working state;
the determining module is used for determining a safe working voltage according to the circuit information and the circuit detection information; the safe working voltage is a voltage which enables the impedance of the H-bridge power supply circuit to be larger than an impedance threshold value;
and the control module is used for supplying power to the switching tube of the H-bridge power supply circuit according to the safe working voltage so as to control the H-bridge power supply circuit to work.
In order to solve the technical problem, the application also provides an H-bridge power supply circuit control device, which comprises a memory for storing a computer program;
and the processor is used for realizing the steps of the H-bridge power supply circuit control method when executing the computer program.
In order to solve the above technical problem, the present application further provides a computer readable storage medium, where a computer program is stored, and the computer program when executed by a processor implements the steps of the H-bridge power supply circuit control method.
The application provides an H-bridge power supply circuit control method, which comprises the following steps: acquiring circuit detection information sent by a detection circuit; the detection circuit is used for detecting the working states of the H-bridge power supply circuit and the back-end circuit; judging whether the H-bridge power supply circuit is in an abnormal working state according to the circuit detection information; if the power supply is in an abnormal working state, acquiring circuit information of an H-bridge power supply circuit; determining a safe working voltage according to the circuit information and the circuit detection information; the safe working voltage is a voltage which enables the impedance of the H-bridge power supply circuit to be larger than an impedance threshold value; and supplying power to the switching tube of the H-bridge power supply circuit according to the safe working voltage so as to control the H-bridge power supply circuit to work. Therefore, when the H-bridge power supply circuit is detected to be in an abnormal working state, the safety working voltage is determined according to the circuit information and the circuit detection information, and the switching tube of the H-bridge power supply circuit is powered according to the safety working voltage, so that the impedance of the switching tube of the H-bridge power supply circuit is increased, the H-bridge power supply circuit is prevented from being damaged due to overlarge current of the switching tube caused by short circuit of a rear-end circuit, and the safety and the reliability of the circuit are improved.
In addition, the application also provides an H-bridge power supply circuit control device and medium, which correspond to the method and have the same effects.
Drawings
For a clearer description of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described, it being apparent that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an H-bridge circuit;
fig. 2 is a flowchart of a control method of an H-bridge power supply circuit according to an embodiment of the present application;
fig. 3 is a block diagram of an H-bridge power circuit control device according to an embodiment of the present application;
fig. 4 is a block diagram of another H-bridge power circuit control device according to an embodiment of the present application.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments herein without making any inventive effort are intended to fall within the scope of the present application.
The core of the application is to provide a control method, a device and a medium for an H-bridge power supply circuit so as to improve the safety and reliability of the H-bridge power supply circuit.
In order to provide a better understanding of the present application, those skilled in the art will now make further details of the present application with reference to the drawings and detailed description.
In the power supply circuit shown in fig. 1, an H-bridge power supply circuit is connected to a primary winding of a transformer to supply an electric signal to a back-end circuit through the transformer. When the back-end circuit is short-circuited, the power of the transformer is unchanged, so that the current in the H-bridge power supply circuit is increased, and the H-bridge power supply circuit can be burnt. As shown in fig. 1, when the back-end circuit is shorted during the starting process of the H-bridge power circuit, the back-end circuit may be equivalently a circuit in which the diode D1 and the diode D2 are connected in series, so that the current in the back-end circuit increases rapidly, and the current in the front-end circuit increases due to the magnetic characteristic of the transformer, so that the current flowing in the switching tubes M1, M2, M3 and M4 is too large, which may cause the switching tubes to burn. In order to solve the technical problem, the application provides a control method of an H-bridge power supply circuit, which is characterized in that when the H-bridge power supply circuit is detected to be in an abnormal working state, a safe working voltage is determined according to circuit information and circuit detection information, and a switching tube of the H-bridge power supply circuit is powered according to the safe working voltage so as to increase the impedance of the switching tube of the H-bridge power supply circuit, prevent the H-bridge power supply circuit from being damaged due to overlarge current of the switching tube caused by short circuit of a rear-end circuit, and improve the safety and reliability of the circuit.
Fig. 2 is a flowchart of a control method of an H-bridge power supply circuit according to an embodiment of the present application, where, as shown in fig. 2, the control method of the H-bridge power supply circuit includes:
s10: acquiring circuit detection information sent by a detection circuit; the detection circuit is used for detecting the working states of the H-bridge power supply circuit and the back-end circuit.
S11: judging whether the H-bridge power supply circuit is in an abnormal working state according to the circuit detection information.
In a specific implementation, circuit detection information sent by a detection circuit is firstly obtained to determine the working states of an H-bridge power supply circuit and a back-end circuit. It can be understood that, after the back-end circuit is shorted, the abnormal operation states mentioned in this embodiment are the high-current operation state of the front-end circuit and the shorted operation state of the back-end circuit.
Specifically, the detection circuit can be connected with the back-end circuit of the transformer to acquire current information or voltage information of the back-end circuit, so as to judge whether the back-end circuit is short-circuited; the detection circuit can also be connected with the front-end circuit of the transformer to acquire current information in the front-end circuit, so as to judge whether the front-end circuit is in a high-current working state; the detection circuit can also be connected with the front-end circuit of the transformer and the back-end circuit of the transformer so as to acquire detection information of the front-end circuit and the back-end circuit at the same time, thereby judging whether the H-bridge power supply circuit is in an abnormal working state or not. It will be appreciated that, since the types of the back-end circuits connected to the H-bridge power supply circuit are various, the connection modes for acquiring the detection information in the different back-end circuits are also different, and thus, detecting the back-end circuits may result in excessively high complexity of the circuits. In order to reduce the complexity of the power supply circuit and reduce the power supply cost, a mode of detecting the front-end circuit of the transformer by using a detection circuit is generally selected.
S12: and if the power supply is in the abnormal working state, acquiring the circuit information of the H-bridge power supply circuit.
S13: determining a safe working voltage according to the circuit information and the circuit detection information; the safe operating voltage is a voltage which enables the impedance of the H-bridge power supply circuit to be larger than an impedance threshold value.
S14: and supplying power to the switching tube of the H-bridge power supply circuit according to the safe working voltage so as to control the H-bridge power supply circuit to work.
In the implementation, when the switching tube is in a conducting state, the smaller the voltage applied by the control end of the switching tube is, the larger the impedance of the switching tube is, and the components of the H-bridge power supply circuit can be burnt out due to overlarge current in an effective mode. Therefore, in the scheme, when the H-bridge power supply circuit is detected to be in an abnormal working state with overlarge current, the driving voltage of the control end of the switching tube is reduced to a safe working voltage, so that the on-resistance of the switching tube is increased.
When the output end Vout is short-circuited, the maximum value of the current flowing through the primary sides of the transformers M1, M2, M3 and M4 is Vin/(RM1+RM4) or Vin/(RM2+RM3), and the resistance of the MOS tube is related to the value of the driving voltage, and the lower the driving voltage is, the larger the on-resistance of the MOS is. Therefore, if the MOS driving voltage is reduced during starting, the impedance of the switching tube can be increased, and the purpose of primary current limiting is achieved. In order to ensure that the circuit elements of the H-bridge power supply circuit are not burned out at the safe operating voltage, it is necessary to ensure that the impedance provided by the switching tube is greater than the voltage of the impedance threshold at the safe operating voltage. The impedance threshold is determined according to the voltage value in the current circuit, and can enable each circuit element to safely work under the current voltage. And corresponding driving voltage values are determined according to the impedance value and the characteristics of the switching tube so as to control the H-bridge power supply circuit to work.
The embodiment provides a control method of an H-bridge power supply circuit, which comprises the following steps: acquiring circuit detection information sent by a detection circuit; the detection circuit is used for detecting the working states of the H-bridge power supply circuit and the back-end circuit; judging whether the H-bridge power supply circuit is in an abnormal working state according to the circuit detection information; if the power supply is in an abnormal working state, acquiring circuit information of an H-bridge power supply circuit; determining a safe working voltage according to the circuit information and the circuit detection information; the safe working voltage is a voltage which enables the impedance of the H-bridge power supply circuit to be larger than an impedance threshold value; and supplying power to the switching tube of the H-bridge power supply circuit according to the safe working voltage so as to control the H-bridge power supply circuit to work. Therefore, when the H-bridge power supply circuit is detected to be in an abnormal working state, the safety working voltage is determined according to the circuit information and the circuit detection information, and the switching tube of the H-bridge power supply circuit is powered according to the safety working voltage, so that the impedance of the switching tube of the H-bridge power supply circuit is increased, the H-bridge power supply circuit is prevented from being damaged due to overlarge current of the switching tube caused by short circuit of a rear-end circuit, and the safety and the reliability of the circuit are improved.
In a specific implementation, the H-bridge power supply circuit includes, in addition to the switching tube shown in fig. 1, other components such as a resistor and a capacitor, where the specifications and types of the components used in different circuits are different, so that the impedance provided by the switching tube is different. Even with the same switching tube, the impedance provided varies with the manner of connection in the different forms of circuit. In order to accurately determine the driving voltage of the switching tube, the impedance value and the voltage value need to be calculated by combining the switching tube parameter information and the circuit specification information.
On the basis of the embodiment, the circuit information comprises switching tube parameter information and circuit specification information; correspondingly, determining the safe operating voltage based on the circuit information and the circuit detection information includes: analyzing the detection information of the circuit to obtain a detection current value; determining a target impedance value according to the circuit specification information; the target impedance value is an impedance value which enables the H-bridge power supply circuit to work normally under the detection current value; and determining the safe working voltage corresponding to the target impedance value in the starting voltage database according to the switching tube parameter information.
In a specific implementation, specification information of a circuit is first obtained, wherein the specification information of the circuit includes circuit structure information, voltage information, transformer power information, other component information, and the like, and a target impedance value required for reducing a present detection current value to a safe current value capable of enabling safe operation of each component is determined according to the specification information of the circuit and the detection current value.
And then, acquiring parameter information of the switching tube, and determining a safe working voltage corresponding to the target impedance value according to the related parameter information by inquiring a starting voltage database.
The starting voltage database is a database which is built in advance and used for storing the corresponding relation between the impedance and the driving voltage of the switching tubes of different types. Specifically, the switching tubes with different specifications need to be tested to determine the corresponding relation between the driving voltage and the impedance of each switching tube in different circuits; and storing the corresponding relation between the driving voltage and the impedance into a starting voltage database.
In the implementation, even if the impedance value of the H-bridge power supply circuit is increased, when the back-end circuit is in a short-circuit state for a long time, the H-bridge power supply circuit is also likely to burn out. In order to prevent this problem, further improving the safety of the circuit, after the step of controlling the start of the H-bridge power supply circuit according to the safe operating voltage, the method further includes: judging whether the H-bridge power supply circuit is always in an abnormal working state in a detection period; and if the power supply circuit is always in an abnormal working state, controlling the H-bridge power supply circuit to be turned off. To prevent long-term high-impedance operation from damaging the switching tube and other components.
Further, after the step of controlling the H-bridge power circuit to be turned off, the method further includes: and sending alarm information to staff, and generating an abnormal work log according to the circuit detection information and the safety work voltage. So that workers can find abnormal conditions in time and maintain the circuit according to the abnormal work log.
It should be noted that, in the technical solution provided in the foregoing embodiment, the problem to be solved is mainly that the back-end circuit is shorted during the starting process of the H-bridge power circuit. In a specific implementation, when the back-end circuit is shorted, it takes a certain time to adjust the driving voltage, and components in the circuit may burn out during this adjustment time.
In order to solve this technical problem, on the basis of the above embodiment, the H-bridge power supply circuit control method further includes: when a power supply starting instruction is acquired, determining a safe starting voltage according to the circuit specification information and the switching tube parameter information; and supplying power to each switching tube according to the safe starting voltage so as to control the starting of the H-bridge power supply circuit.
In specific implementation, when a power supply starting instruction is acquired, a driving voltage capable of enabling the switching tube to run under the condition of a rear end short circuit is determined according to the circuit specification information, the switching tube parameter information and the driving voltage database, and a safe starting voltage of the switching tube is determined according to the driving voltage. The safe starting voltage can be larger than or equal to the safe working voltage in the database, and is not limited herein, and the safe starting voltage is only required to be smaller than the standard operating voltage of the switching tube.
In the embodiment, the H-bridge power supply circuit is controlled to safely start voltage, so that the short circuit is prevented from burning out components during starting, and the safety and reliability of the circuit are further improved.
In a specific implementation, after the step of controlling the H-bridge power circuit to be turned off, the method further includes: after a first preset time, supplying power to each switching tube according to the safe starting voltage; judging whether the working current of the H-bridge power supply circuit in the detection period is always smaller than a current threshold value or not; if the current threshold value is smaller than the current threshold value, determining the standard working voltage of the H-bridge power supply circuit according to the starting voltage database, and supplying power to each switching tube according to the standard working voltage.
In the above embodiments, the H-bridge power supply circuit control method is described in detail, and the present application further provides corresponding embodiments of the H-bridge power supply circuit control device. It should be noted that the present application describes an embodiment of the device portion from two angles, one based on the angle of the functional module and the other based on the angle of the hardware.
Fig. 3 is a block diagram of an H-bridge power supply circuit control device according to an embodiment of the present application, where, as shown in fig. 3, the H-bridge power supply circuit control device includes:
a first acquiring module 10, configured to acquire circuit detection information sent by the detection circuit; the detection circuit is used for detecting the working states of the H-bridge power supply circuit and the back-end circuit;
the judging module 11 is used for judging whether the H-bridge power supply circuit is in an abnormal working state according to the circuit detection information;
the second obtaining module 12 is configured to obtain circuit information of the H-bridge power supply circuit if the second obtaining module is in an abnormal working state;
a determining module 13 for determining a safe operating voltage based on the circuit information and the circuit detection information; the safe working voltage is a voltage which enables the impedance of the H-bridge power supply circuit to be larger than an impedance threshold value;
the control module 14 is used for supplying power to the switching tube of the H-bridge power supply circuit according to the safe working voltage so as to control the H-bridge power supply circuit to work.
Since the embodiments of the apparatus portion and the embodiments of the method portion correspond to each other, the embodiments of the apparatus portion are referred to the description of the embodiments of the method portion, and are not repeated herein.
The present embodiment provides an H-bridge power supply circuit control device, including: acquiring circuit detection information sent by a detection circuit; the detection circuit is used for detecting the working states of the H-bridge power supply circuit and the back-end circuit; judging whether the H-bridge power supply circuit is in an abnormal working state according to the circuit detection information; if the power supply is in an abnormal working state, acquiring circuit information of an H-bridge power supply circuit; determining a safe working voltage according to the circuit information and the circuit detection information; the safe working voltage is a voltage which enables the impedance of the H-bridge power supply circuit to be larger than an impedance threshold value; and supplying power to the switching tube of the H-bridge power supply circuit according to the safe working voltage so as to control the H-bridge power supply circuit to work. Therefore, when the H-bridge power supply circuit is detected to be in an abnormal working state, the safety working voltage is determined according to the circuit information and the circuit detection information, and the switching tube of the H-bridge power supply circuit is powered according to the safety working voltage, so that the impedance of the switching tube of the H-bridge power supply circuit is increased, the H-bridge power supply circuit is prevented from being damaged due to overlarge current of the switching tube caused by short circuit of a rear-end circuit, and the safety and the reliability of the circuit are improved.
Fig. 4 is a block diagram of another H-bridge power supply circuit control device according to an embodiment of the present application, where, as shown in fig. 4, the H-bridge power supply circuit control device includes: a memory 20 for storing a computer program;
a processor 21 for implementing the steps of the method of the H-bridge power supply circuit control device of the above embodiment when executing a computer program.
The H-bridge power circuit control device provided in this embodiment may include, but is not limited to, a smart phone, a tablet computer, a notebook computer, a desktop computer, or the like.
Processor 21 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 21 may be implemented in hardware in at least one of a digital signal processor (Digital Signal Processor, DSP), a Field programmable gate array (Field-Programmable Gate Array, FPGA), a programmable logic array (Programmable Logic Array, PLA). The processor 21 may also comprise a main processor, which is a processor for processing data in an awake state, also called central processor (Central Processing Unit, CPU), and a coprocessor; a coprocessor is a low-power processor for processing data in a standby state. In some embodiments, the processor 21 may be integrated with an image processor (Graphics Processing Unit, GPU) for taking care of rendering and rendering of the content that the display screen is required to display. In some embodiments, the processor 21 may also include an artificial intelligence (Artificial Intelligence, AI) processor for processing computing operations related to machine learning.
Memory 20 may include one or more computer-readable storage media, which may be non-transitory. Memory 20 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In this embodiment, the memory 20 is at least used for storing a computer program 201, where the computer program, when loaded and executed by the processor 21, can implement the relevant steps of the H-bridge power supply circuit control method disclosed in any of the foregoing embodiments. In addition, the resources stored in the memory 20 may further include an operating system 202, data 203, and the like, where the storage manner may be transient storage or permanent storage. The operating system 202 may include Windows, unix, linux, among others. The data 203 may include, but is not limited to, circuit information, circuit detection information, and the like.
In some embodiments, the H-bridge power circuit control device may further include a display 22, an input/output interface 23, a communication interface 24, a power supply 25, and a communication bus 26.
Those skilled in the art will appreciate that the configuration shown in fig. 4 is not limiting of the H-bridge power circuit control device and may include more or fewer components than shown.
The H-bridge power supply circuit control device provided by the embodiment of the application comprises a memory and a processor, wherein when the processor executes a program stored in the memory, the processor can realize the following method: acquiring circuit detection information sent by a detection circuit; the detection circuit is used for detecting the working states of the H-bridge power supply circuit and the back-end circuit; judging whether the H-bridge power supply circuit is in an abnormal working state according to the circuit detection information; if the power supply is in an abnormal working state, acquiring circuit information of an H-bridge power supply circuit; determining a safe working voltage according to the circuit information and the circuit detection information; the safe working voltage is a voltage which enables the impedance of the H-bridge power supply circuit to be larger than an impedance threshold value; and supplying power to the switching tube of the H-bridge power supply circuit according to the safe working voltage so as to control the H-bridge power supply circuit to work.
Finally, the present application also provides a corresponding embodiment of the computer readable storage medium. The computer-readable storage medium has stored thereon a computer program which, when executed by a processor, performs the steps as described in the method embodiments above.
It will be appreciated that the methods of the above embodiments, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored on a computer readable storage medium. With such understanding, the technical solution of the present application, or a part contributing to the prior art or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, performing all or part of the steps of the method described in the various embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The method, the device and the medium for controlling the H-bridge power supply circuit provided by the application are described in detail. In the description, each embodiment is described in a progressive manner, and each embodiment is mainly described by the differences from other embodiments, so that the same similar parts among the embodiments are mutually referred. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section. It should be noted that it would be obvious to those skilled in the art that various improvements and modifications can be made to the present application without departing from the principles of the present application, and such improvements and modifications fall within the scope of the claims of the present application.
It should also be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. An H-bridge power circuit control method, comprising:
acquiring circuit detection information sent by a detection circuit; the detection circuit is used for detecting the working states of the H-bridge power supply circuit and the back-end circuit;
judging whether the H-bridge power supply circuit is in an abnormal working state according to the circuit detection information;
if the power supply is in the abnormal working state, acquiring the circuit information of the H-bridge power supply circuit;
determining a safe working voltage according to the circuit information and the circuit detection information; the safe working voltage is a voltage which enables the impedance of the H-bridge power supply circuit to be larger than an impedance threshold value;
and supplying power to a switching tube of the H-bridge power supply circuit according to the safe working voltage so as to control the H-bridge power supply circuit to work.
2. The H-bridge power supply circuit control method according to claim 1, wherein the circuit information includes switching tube parameter information and circuit specification information;
the determining a safe operating voltage based on the circuit information and the circuit detection information includes:
analyzing the circuit detection information to obtain a detection current value;
determining a target impedance value according to the circuit specification information; the target impedance value is an impedance value which enables the H-bridge power supply circuit to work normally under the detection current value;
and determining the safe working voltage corresponding to the target impedance value in a starting voltage database according to the switching tube parameter information.
3. The H-bridge power supply circuit control method according to claim 1, further comprising, after the step of supplying power to the switching tube of the H-bridge power supply circuit according to the safe operating voltage:
judging whether the H-bridge power supply circuit is always in the abnormal working state in a detection period;
and if the power supply circuit is always in the abnormal working state, controlling the H-bridge power supply circuit to be turned off.
4. The H-bridge power supply circuit control method according to claim 2, characterized by further comprising:
when a power supply starting instruction is acquired, determining a safe starting voltage according to the circuit specification information and the switching tube parameter information;
and supplying power to each switching tube according to the safe starting voltage so as to control the starting of the H-bridge power supply circuit.
5. The H-bridge power supply circuit control method according to claim 2, characterized by further comprising:
testing the switching tubes with different specifications to determine the corresponding relation between the driving voltage and the impedance of each switching tube in different circuits;
and storing the corresponding relation between the driving voltage and the impedance into the starting voltage database.
6. The H-bridge power supply circuit control method according to claim 4, further comprising, after the step of controlling the H-bridge power supply circuit to turn off:
after a first preset time, supplying power to each switching tube according to the safety starting voltage;
judging whether the working current of the H-bridge power supply circuit in the detection period is always smaller than a current threshold value or not;
and if the current threshold value is smaller than the current threshold value, determining the standard working voltage of the H-bridge power supply circuit according to the starting voltage database, and supplying power to each switching tube according to the standard working voltage.
7. The H-bridge power supply circuit control method according to claim 3, further comprising, after the step of controlling the H-bridge power supply circuit to turn off:
and sending alarm information to staff, and generating an abnormal work log according to the circuit detection information and the safe working voltage.
8. An H-bridge power circuit control device, comprising:
the first acquisition module is used for acquiring circuit detection information sent by the detection circuit; the detection circuit is used for detecting the working states of the H-bridge power supply circuit and the back-end circuit;
the judging module is used for judging whether the H-bridge power supply circuit is in an abnormal working state according to the circuit detection information;
the second acquisition module is used for acquiring the circuit information of the H-bridge power supply circuit if the second acquisition module is in the abnormal working state;
the determining module is used for determining a safe working voltage according to the circuit information and the circuit detection information; the safe working voltage is a voltage which enables the impedance of the H-bridge power supply circuit to be larger than an impedance threshold value;
and the control module is used for supplying power to the switching tube of the H-bridge power supply circuit according to the safe working voltage so as to control the H-bridge power supply circuit to work.
9. An H-bridge power supply circuit control device, comprising a memory for storing a computer program;
a processor for implementing the steps of the H-bridge power supply circuit control method according to any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the H-bridge power supply circuit control method according to any one of claims 1 to 7.
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| CN117394698B (en) | 2024-03-26 |
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