CN111596585B - System control method, circuit, electronic device, and storage medium - Google Patents
System control method, circuit, electronic device, and storage medium Download PDFInfo
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- CN111596585B CN111596585B CN202010427362.4A CN202010427362A CN111596585B CN 111596585 B CN111596585 B CN 111596585B CN 202010427362 A CN202010427362 A CN 202010427362A CN 111596585 B CN111596585 B CN 111596585B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
Abstract
The application discloses a control circuit and a method of a system. Wherein, this circuit includes: a plurality of levels of voltage sources; for powering different loads in the system; the first AND gate circuit is connected with the voltage sources of multiple levels, and is used for performing logic AND operation on the working states of the voltage sources and outputting a control signal according to an operation result; and the system controller is used for determining whether to trigger the system to enter a working state or not according to the control signal. The method and the device solve the technical problems of high development difficulty, long period, high input cost and easiness in damaging devices in the development process of realizing multi-voltage source time sequence control.
Description
Technical Field
The present application relates to the field of electronic devices, and in particular, to a method and a circuit for controlling a system, an electronic device, and a storage medium.
Background
With the development of society, the integration degree of electronic equipment is higher and higher, and the voltage level in the system is not one or two. Systems with multiple voltage levels are more and more, but there are strict requirements on working timing sequence among voltage levels, so how to realize the timing sequence relation of the working of each voltage source is very important. At present, the FPGA is usually used for realizing the control of the time sequence of each voltage source, but the method has high development difficulty, long development period and high investment cost.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the application provides a control circuit of a system, which is used for at least solving the technical problems of high development difficulty, long period, high investment cost and the like of realizing multi-voltage source sequential control.
According to an aspect of an embodiment of the present application, there is provided a control circuit of a system, including: a plurality of levels of voltage sources; for powering different loads in the system; the first AND gate circuit is connected with the voltage sources of multiple levels, and is used for performing logic AND operation on the working states of the voltage sources and outputting a control signal according to an operation result; and the system controller is used for determining whether to trigger the system to enter a working state or not according to the control signal.
Optionally, the voltage sources of the plurality of levels comprise: a first type voltage source and a second type voltage source; the first-class voltage source is connected with a first input end of the first AND circuit; the control circuit of the system further comprises: a second AND circuit; the input end of the second AND gate circuit is connected with a second class voltage source, the output end of the second AND gate circuit is connected with the second input end of the first AND gate circuit, and the second AND gate circuit is used for performing logic AND operation on the voltage source in the second class voltage source to obtain a first output signal and inputting the first output signal to the first AND gate circuit; and the first AND gate circuit is also used for carrying out logical AND operation on the enabling information carried in the first output signal and the working state of the first class voltage source to obtain a control signal.
Optionally, the second and circuit comprises: the second AND gate circuit has a larger number of inputs for receiving a voltage source than the first AND gate circuit.
Optionally, the voltage provided by the first type of voltage source is greater than the voltage provided by each of the second type of voltage sources.
Optionally, the first type of voltage source is a main power supply; the second type of voltage source is obtained by carrying out step-by-step voltage reduction conversion on the first type of voltage source.
Optionally, the system control circuit further includes: and the voltage monitoring circuit is connected with the first class voltage source at one end and the first AND gate circuit at the other end, and is used for monitoring the output voltage of the first class voltage source and inputting the monitoring result to the first AND gate circuit.
Optionally, the voltage monitoring circuit comprises: the reset circuit is used for outputting a low level for indicating the abnormity of the output voltage of the first class voltage source when the output voltage of the first class voltage source exceeds a preset range; and outputting a high level for indicating that the output voltage of the first class voltage source is normal when the output voltage of the first class voltage source falls into a preset range.
Optionally, the first and circuit is configured to output a control signal for triggering the system to enter the working state when the working states of the multiple voltage sources are all normal; and when at least one working state in the working states of the plurality of voltage sources is abnormal, outputting a control signal for rejecting the system to enter the working state.
According to another aspect of embodiments of the present application, there is provided an electronic device including: a control circuit for a system as claimed in any preceding claim.
According to a further aspect of embodiments of the present application, there is provided a method of controlling a system comprising a load and a plurality of levels of voltage sources for supplying power to the load, the method comprising: acquiring working states of voltage sources of multiple levels; inputting the working states of the plurality of voltage sources into a first AND gate circuit to carry out logical AND operation, and determining a control signal corresponding to an operation result; and determining whether to trigger the system to enter a working state according to the control signal.
Optionally, the voltage sources of the plurality of levels comprise: a first type voltage source and a second type voltage source; performing logical AND operation on the voltage sources in the second class of voltage sources through a second AND gate circuit to obtain a first operation result; and performing logic AND operation on the first operation result and the working state of the first class voltage source through the first AND gate circuit to obtain a control signal.
According to still another aspect of the embodiments of the present application, there is provided a non-volatile storage medium including a stored program, wherein a device in which the non-volatile storage medium is controlled when the program runs executes a control method of any one of the systems described above.
In the embodiment of the application, the power is supplied to different loads through the voltage sources of multiple levels, the first AND gate circuit connected with the voltage sources of multiple levels is used, the working states of the voltage sources are subjected to logic and operation, and a control signal is output according to an operation result, whether the signal control system controller triggers the system to enter the working state is achieved, the purpose of effectively controlling strict working time sequence relation among the voltage sources when the voltage sources supply power is achieved, the reliability is high, the damage rate of devices is reduced, and the circuit is built through hardware, the development difficulty and development cost are reduced, so that the technical problems that the development difficulty of realizing multi-voltage source time sequence control is high, the period is long, the input cost is high, and the devices are easy to damage in the development process are solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a block diagram of a control circuit of a system according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an alternative second class voltage source circuit according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a control circuit of an alternative system according to an embodiment of the present application;
FIG. 4 is an alternative multi-voltage source triggered sequential circuit according to an embodiment of the present application;
FIG. 5 is a diagram illustrating operational timing relationships between alternative voltage sources according to an embodiment of the present application;
fig. 6 is a flow chart illustrating a method of controlling a circuit of a system according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
First, for convenience of understanding, partial terms or terms appearing in the course of explanation of the embodiments of the present application are explained as follows:
gate circuit: is an integrated circuit that functions as a switch. The gate circuit is classified into an and circuit, a not circuit, a nand circuit, and the like according to the opening condition. Wherein, AND gate circuit's characteristics are: when the two input ends input high level, the output end can output high level; the output end can output low level as long as one input end inputs low level.
IC: broadly, an IC is a generic term for a semiconductor device product, comprising: integrated circuits, diodes/transistors, and special electronic components.
Fig. 1 is a control circuit of a system according to an embodiment of the present application, as shown in fig. 1, the circuit including:
a plurality of levels of voltage sources 10 for powering different loads in the system;
it should be noted that the level of the voltage source is determined according to the voltage provided by each voltage source, for example, there are multiple voltage ranges, each voltage range corresponds to a voltage level, if the voltage provided by a certain voltage source falls into one of the voltage ranges, the voltage source belongs to the level corresponding to the voltage range to which the voltage source belongs; different systems have different power supply circuits, and the different loads include but are not limited to: circuit modules for implementing different functions in the system, etc.
The first and circuit 12 is connected to the voltage sources of multiple levels, and is configured to perform a logical and operation on the operating states of the voltage sources, and output a control signal according to an operation result; the operating states of the voltage source include, but are not limited to: whether the state of the output voltage is normal or not is determined, for example, when the output voltage is equal to the rated voltage of the voltage source or the difference between the output voltage and the rated voltage falls within an allowable error range, the state of the output voltage is considered to be normal, otherwise, the state of the output voltage is abnormal.
And the system controller 14 is used for determining whether to trigger the system to enter the working state or not according to the control signal.
In some embodiments of the present application, the above-mentioned triggering process of the operating state includes, but is not limited to: when the operation result indicates that the working states of the voltage sources of the multiple levels are normal, the system controller generates a trigger signal to trigger each component in the system to be powered on and started, namely, the system controller enters the working state.
Through the circuit, the aims of reducing the development difficulty and development cost of multi-voltage source time sequence control and shortening the development period can be achieved, and the technical problems that the development difficulty, the period length and the input cost of multi-voltage source time sequence control are high and devices are easy to damage in the development process are solved.
In an embodiment of the present application, the voltage sources of the plurality of levels include 10: a first type voltage source 102 and a second type voltage source 104; the first type voltage source 102 is connected to a first input terminal of the first and circuit 12. The first type of voltage source is a main voltage source, and the voltage provided by the main voltage source can be 12V; the second type of voltage source is a plurality of voltage sources obtained by step-by-step voltage reduction conversion of the main voltage source, and the plurality of voltage sources obtained by step-by-step voltage reduction of the main voltage source can be 3.3V, 2.5V and 1.8V, respectively. As shown in fig. 2, the circuit diagram of the second type of voltage source is a circuit diagram, which functions as three-way voltage output, and when the single-way voltage is normally output, the enable pin PGOOD outputs a high level. In the practical application of the control circuit of the system, the second type voltage source can expand the number of different voltage sources according to different conditions. It should be noted here that the voltage provided by the first type of voltage source is greater than the voltage provided by each of the second type of voltage sources.
Fig. 3 is a schematic structural diagram of a control circuit of another alternative system according to an embodiment of the present application, and as shown in fig. 3, in the embodiment of the present application, the control circuit of the system further includes: a second and circuit 16; the input terminal of the second and circuit 16 is connected to the second-type voltage source 104, and the output terminal of the second and circuit 16 is connected to the second input terminal of the first and circuit 12, for performing logical and operation on the voltage source in the second-type voltage source 104, and determining as high level when the input voltage is in the range of 1.5V-6V, and determining as low level when the input voltage is in the range of 0V-0.5V.
It should be noted here that the first and circuit 12 is connected to the second type voltage source 104 in two ways: direct connection and indirect connection. The direct connection means that the first and circuit 12 is directly connected to the second-type voltage source 104; the indirect connection mode means that the first and gate circuit is connected with the second type voltage source through the second and gate circuit. When the first AND gate circuit is indirectly connected with the second type of voltage source and a plurality of voltage sources in the second type of voltage source can normally work, the second AND gate circuit is triggered to generate a first output signal, and the first output signal is input to the first AND gate circuit, wherein the first output signal carries enabling information; the first and circuit 12 is further configured to perform a logical and operation on the enabling information carried in the first output signal and the working state of the first class voltage source to obtain a control signal.
Specifically, when the working states of the multiple voltage sources are normal, the first and gate circuit outputs a first control signal for triggering the system to enter the working state; when at least one working state in the working states of the plurality of voltage sources is abnormal, a second control signal for rejecting the system to enter the working state is output, so that the problem of device damage caused by starting sequence errors of different voltage sources is avoided.
The first and circuit 12 includes: a two-way and circuit having two inputs, the second and circuit 16 comprising: the second AND gate circuit has a larger number of inputs for receiving a voltage source than the first AND gate circuit.
In some embodiments of the present application, as shown in fig. 3, the system control circuit further includes: and a voltage monitoring circuit 18, one end of which is connected to the first type voltage source 10 and the other end of which is connected to the first and circuit 12, for monitoring the output voltage of the first type voltage source and inputting the monitoring result to the first and circuit, wherein the monitoring result can be represented as a low level and a high level.
Specifically, the voltage monitoring circuit 18 includes: the RESET circuit 180, the composition and connection of the RESET circuit 180 are as shown in the multi-channel voltage source trigger sequence circuit diagram (i.e. fig. 4), the RESET circuit is used when the output voltage of the first type of voltage source exceeds the preset range, the pin RESET outputs a low level for indicating the output voltage abnormality of the first type of voltage source, and the control system is initialized; and outputting a high level for indicating that the output voltage of the first class voltage source is normal when the output voltage of the first class voltage source falls into a preset range. Different voltage sources reflect the working states of all the voltage sources through an AND gate relation, and then whether a lower-level trigger signal is output or not is determined, so that the strict relation of working time sequences among all the voltage sources is achieved.
Further, as shown in fig. 4, the reset circuit 180 further includes: the circuit comprises a RESET chip U1, a first resistor R1, a second resistor R3, a first capacitor C1, a second capacitor C4 and a third capacitor C5, wherein one end of the first resistor R1 is connected with a RESET pin, and the other end of the first resistor R1 is grounded with a GND pin; one end of the first capacitor C1 is connected with the CT pin, and the other end is grounded; one end of the second capacitor C4 is connected to the REF pin, and the other end is connected to the GND pin.
Fig. 5 is a diagram showing the operation timing relationship between the voltage sources in this embodiment, and the following describes the implementation process of the system control circuit in detail with reference to fig. 5:
the main power supply of the system is 12V, the main power supply 12V can supply power to a main power supply IC of the system, the main power supply IC can be in single-path output or multi-path output, the single-path output can directly connect an output end to a lower chip (circuit), if the single-path output is in multi-path output, an output enabling pin is generally provided, the high and low level of the pin can reflect whether the output voltage of the chip is normal or not, and meanwhile, the pin can also be connected to the lower chip.
The 5V power supply output by the multi-path main power supply circuit is used for supplying power to a load with a 5V voltage level of the system, and can also be used as the input of a 3.3V voltage reduction circuit, and the 3.3V power supply supplies power to the load with the 3.3V voltage level of the system on the one hand, and can also supply power to a lower-level 2.5V voltage reduction circuit on the other hand. 2.5V and 1.8V can supply power for external loads as same as 3.3V, and meanwhile, wide-voltage AND gate chips (wide-voltage AND gate circuits) are connected.
The input of the AND gate is a plurality of voltage levels such as 3.3V, 2.5V, 1.8V and the like, so wide voltage input is necessary, when a plurality of voltage levels work normally, the wide voltage AND gate chip can output an enabling signal (such as high level), the signal and a system reset signal output by the 12V voltage monitoring chip are connected to a lower-level two-way AND gate circuit, and then the output signal is determined to be enabling or disabling according to the input signal, so that the system main control chip (system controller) can be controlled to start the system to work when all external voltage levels are normal, and the system stops working when any one or more of all external voltage levels are abnormal, thereby achieving the purpose of system protection. By building a hardware logic gate circuit, the time sequence trigger circuit of multiple voltage sources is realized, and the working time sequences of different voltage sources are rigorous and stable. The circuit can be flexibly adjusted according to different voltage sources in specific projects, the system development difficulty and project personnel configuration are reduced, the research and development period is shortened, compared with an integrated IC (integrated circuit) mode, the cost is saved by building discrete components, and the circuit has good commercial application value.
In accordance with an embodiment of the present application, there is provided a method embodiment of a method of controlling a system, it being noted that the steps illustrated in the flowchart of the figure may be performed in a computer system, such as a set of computer-executable instructions, and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than here.
Fig. 6 is a control method of a system including a load and a plurality of levels of voltage sources for powering the load according to an embodiment of the present application, as shown in fig. 6, the method including the steps of:
step S602, acquiring the working states of voltage sources of multiple levels;
step S604, inputting the working states of the voltage sources of multiple levels to a first gate circuit for logic AND operation, and determining a control signal corresponding to the operation result;
step S606, determining whether to trigger the system to enter a working state according to the control signal.
In an embodiment of the present application, the voltage sources of the plurality of levels include: a first type voltage source and a second type voltage source; at this time, the method shown in fig. 6 may further include the following processing steps: performing logical AND operation on the voltage sources in the second class of voltage sources through a second AND gate circuit to obtain a first operation result; and performing logic AND operation on the first operation result and the working state of the first class voltage source through the first AND gate circuit to obtain a control signal.
Specifically, the second and circuit performs a logical and operation on the voltage source in the second class of voltage sources, and a process of obtaining the first operation result is as follows: when the working states of a plurality of voltage sources in the second class of voltage sources are normal, the second AND gate circuit outputs high level to the first AND gate circuit; when at least one of the working states of a plurality of voltage sources in the second class of voltage sources is abnormal, the second AND gate circuit outputs low level to the first AND gate circuit. The first and gate circuit performs logical and operation on the first operation result and the working state of the first class voltage source, and the process of obtaining the control signal is as follows: when the working states of the voltage sources are normal, the first AND gate circuit outputs a control signal for triggering the system to enter the working state; and when at least one working state in the working states of the plurality of voltage sources is abnormal, outputting a control signal for rejecting the system to enter the working state. Through the steps, the problem of device damage caused by starting sequence errors of different voltage sources can be avoided.
The first type of voltage source is a main voltage source, the second type of voltage source is a plurality of voltage sources obtained by carrying out step-by-step voltage reduction conversion on the main voltage source, wherein the voltage provided by the main voltage source can be 12V; the second type of voltage source is a plurality of voltage sources obtained by step-by-step voltage reduction conversion of the main voltage source, and the plurality of voltage sources obtained by step-by-step voltage reduction of the main voltage source can be 3.3V, 2.5V and 1.8V, respectively. In the practical application of the control circuit of the system, the second type voltage source can expand the number of different voltage sources according to different conditions. It should be noted here that the voltage provided by the first type of voltage source is greater than the voltage provided by each of the second type of voltage sources.
In the embodiment of the present application, the first and circuit includes, but is not limited to: a two-way and circuit having two input terminals, the second and circuit comprising: the second AND gate circuit has a larger number of inputs for receiving a voltage source than the first AND gate circuit.
In addition to the above circuits, in order to ensure strict operation timing relationship between the voltage sources and ensure the safety of the control circuit of the system, a voltage monitoring circuit and a reset circuit may be provided in the control circuit of the system.
Specifically, one end of the voltage monitoring circuit is connected to the first class voltage source, and the other end of the voltage monitoring circuit is connected to the first and circuit, and is configured to monitor an output voltage of the first class voltage source and input a monitoring result to the first and circuit, where the monitoring result may be represented as a low level and a high level.
The RESET circuit is arranged in the voltage monitoring circuit and used for outputting a low level for indicating the output voltage abnormity of the first class voltage source by the pin RESET when the output voltage of the first class voltage source exceeds a preset range, and controlling the initialization of the system; and outputting a high level for indicating that the output voltage of the first class voltage source is normal when the output voltage of the first class voltage source falls into a preset range. Different voltage sources reflect the working states of all the voltage sources through an AND gate relation, and then whether a lower-level trigger signal is output or not is determined, so that the strict relation of working time sequences among all the voltage sources is achieved.
The following explains the implementation process of the system control circuit by combining the functions and the connection relations of all sub-circuits in the control circuit of the system:
the main power supply of the system is 12V, the main power supply 12V can supply power to a main power supply IC of the system, the main power supply IC can be in single-path output or multi-path output, the single-path output can directly connect an output end to a lower chip (circuit), if the single-path output is in multi-path output, an output enabling pin is generally provided, the high and low level of the pin can reflect whether the output voltage of the chip is normal or not, and meanwhile, the pin can also be connected to the lower chip.
The 5V power supply output by the multi-path main power supply circuit is used for supplying power to a load with a 5V voltage level of the system, and can also be used as the input of a 3.3V voltage reduction circuit, and the 3.3V power supply supplies power to the load with the 3.3V voltage level of the system on the one hand, and can also supply power to a lower-level 2.5V voltage reduction circuit on the other hand. 2.5V and 1.8V can supply power for external loads as same as 3.3V, and meanwhile, wide-voltage AND gate chips (wide-voltage AND gate circuits) are connected.
The input of the AND gate is a plurality of voltage levels of 3.3V, 2.5V, 1.8V and the like, so wide voltage input is necessary, when a plurality of voltage levels work normally, the wide voltage AND gate chip can output an enable signal, the signal and a system reset signal output by the 12V voltage monitoring chip are connected to a lower-level two-way AND gate circuit, and then the output signal is determined to be enable or disable according to the input signal, so that the system main control chip (system controller) can be controlled to start the system to work when all external voltage levels are normal, and the system stops working when at least one external voltage level is abnormal, thereby achieving the purpose of system protection. By building a hardware logic gate circuit, the time sequence trigger circuit of multiple voltage sources is realized, and the working time sequences of different voltage sources are rigorous and stable. The circuit can be flexibly adjusted according to different voltage sources in specific projects, the system development difficulty and project personnel configuration are reduced, the research and development period is shortened, compared with an integrated IC (integrated circuit) mode, the cost is saved by building discrete components, and the circuit has good commercial application value.
According to an aspect of embodiments of the present application, there is provided an electronic device comprising the control circuit of the system according to any one of the related descriptions of the embodiment shown in fig. 1.
According to still another aspect of embodiments of the present application, there is provided a nonvolatile storage medium including a stored program, wherein a device in which the nonvolatile storage medium is controlled when the program is executed performs the control method of the system described above.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present application, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present application and it should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.
Claims (10)
1. A control circuit for a system, comprising:
a plurality of levels of voltage sources for powering different loads in a system, the plurality of levels of voltage sources comprising: a first type voltage source and a second type voltage source;
the first input end of the first AND gate circuit is connected with the first class voltage source;
a second AND circuit; the input end of the second AND gate circuit is connected with the second class voltage source, and the output end of the second AND gate circuit is connected with the second input end of the first AND gate circuit, and is used for performing logical AND operation on the voltage source in the second class voltage source to obtain a first output signal and inputting the first output signal to the first AND gate circuit;
the first and gate circuit is further configured to perform a logical and operation on the enabling information carried in the first output signal and the working state of the first class voltage source to obtain a control signal;
and the system controller is used for determining whether to trigger the system to enter a working state or not according to the control signal.
2. The control circuit of claim 1, wherein the second and gate circuit comprises: the second AND gate circuit is provided with a plurality of input ends, and the number of the input ends used for connecting a voltage source is more than that of the first AND gate circuit.
3. The system control circuit of claim 1, wherein the voltage provided by the voltage sources of the first type is greater than the voltage provided by each of the voltage sources of the second type.
4. The control circuit of system of claim 1, wherein the first type of voltage source is a main power supply; the second type voltage source is obtained by carrying out step-by-step voltage reduction conversion on the first type voltage source.
5. The control circuit of system of claim 1, further comprising: and one end of the voltage monitoring circuit is connected with the first class voltage source, the other end of the voltage monitoring circuit is connected with the first AND gate circuit, and the voltage monitoring circuit is used for monitoring the output voltage of the first class voltage source and inputting a monitoring result to the first AND gate circuit.
6. The control circuit of system of claim 5, wherein said voltage monitoring circuit comprises: the reset circuit is used for outputting a low level for indicating the abnormity of the output voltage of the first class voltage source when the output voltage of the first class voltage source exceeds a preset range; and when the output voltage of the first class voltage source falls into the preset range, outputting a high level for indicating that the output voltage of the first class voltage source is normal.
7. The control circuit of the system according to claim 1, wherein the first and gate circuit is configured to output a control signal for triggering the system to enter the operating state when the operating states of the plurality of voltage sources are all normal; and when at least one working state in the working states of the plurality of voltage sources is abnormal, outputting a control signal for rejecting the system to enter the working state.
8. An electronic device, comprising: control circuitry for a system as claimed in any one of claims 1 to 7.
9. A method of controlling a system comprising a load and a plurality of levels of voltage sources for powering the load, the method comprising:
acquiring the working states of the voltage sources of the multiple grades, wherein the voltage sources of the multiple grades comprise a first class voltage source and a second class voltage source;
performing logical AND operation on the voltage sources in the second class of voltage sources through a second AND gate circuit to obtain a first operation result;
performing logical AND operation on the first operation result and the working state of the first class voltage source through the first AND gate circuit to obtain a control signal;
and determining whether to trigger the system to enter a working state or not according to the control signal.
10. A non-volatile storage medium, characterized in that the non-volatile storage medium includes a stored program, wherein a device in which the non-volatile storage medium is located is controlled to execute the control method of the system according to claim 9 when the program runs.
Priority Applications (1)
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| CN100492228C (en) * | 2005-05-30 | 2009-05-27 | 杭州华三通信技术有限公司 | Device and method for controlling multivoltage electric supply sequence |
| CN102104273B (en) * | 2009-12-17 | 2013-07-17 | 北大方正集团有限公司 | Power-down time sequence control device and method for multiple power supplies |
| CN102522968A (en) * | 2011-12-22 | 2012-06-27 | Tcl通力电子（惠州）有限公司 | Reset circuit for multi-power-supply system |
| CN102981586A (en) * | 2012-11-23 | 2013-03-20 | 西安坤蓝电子技术有限公司 | Low-level reset circuit and reset method of multi-reset-source-to-multi-processor system |
| TWM532693U (en) * | 2016-07-27 | 2016-11-21 | 新唐科技股份有限公司 | Control chip for memory power sequence |
| CN206684514U (en) * | 2017-03-17 | 2017-11-28 | 厦门歌乐电子企业有限公司 | A kind of vehicle power control circuit |
| CN107506281A (en) * | 2017-08-21 | 2017-12-22 | 郑州云海信息技术有限公司 | A kind of multiple power supplies monitoring system and method |
| CN109150142B (en) * | 2018-09-03 | 2021-12-24 | 西安电子工程研究所 | Drain electrode modulation circuit with radio frequency switch working voltage power-on time sequence protection function |
| CN110112892A (en) * | 2019-04-30 | 2019-08-09 | 湖北三江航天万峰科技发展有限公司 | A kind of power device drive dynamic control device |
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