CN112631363B - Power supply circuit and power supply method for supplying power to ECU (electronic control Unit) peripheral - Google Patents
Power supply circuit and power supply method for supplying power to ECU (electronic control Unit) peripheral Download PDFInfo
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- CN112631363B CN112631363B CN202011499124.0A CN202011499124A CN112631363B CN 112631363 B CN112631363 B CN 112631363B CN 202011499124 A CN202011499124 A CN 202011499124A CN 112631363 B CN112631363 B CN 112631363B
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Abstract
The invention provides a power supply circuit and a power supply method for supplying power to ECU (electronic control unit) peripheral equipment, wherein the power supply circuit comprises a reference voltage regulation module, a power supply module and a voltage stabilization module, wherein: the output end of the reference voltage adjusting module is connected with the first input end of the voltage stabilizing module and used for determining the reference voltage of the output end according to the power supply voltage of the electronic control unit ECU peripheral equipment; the input end of the power supply module is connected with the voltage input end of the ECU, the output end of the power supply module is connected with the second input end of the voltage stabilizing module, and the power supply module is used for converting the voltage input by the voltage input end of the ECU into an intermediate voltage and supplying power to the voltage stabilizing module through the second input end; and the voltage stabilizing module is used for stabilizing the reference voltage input by the first input end to obtain corresponding output voltage and outputting the output voltage to the corresponding ECU peripheral. By using the power supply circuit disclosed by the invention, the output voltage for supplying power to the ECU peripheral equipment can be adjusted without changing the design of a hardware circuit, and the voltage reliability is improved.
Description
Technical Field
The invention relates to the technical field of electronic circuits, in particular to a power supply circuit and a power supply method for supplying power to an ECU (electronic control unit) peripheral.
Background
In recent years, automobile technology has been developed vigorously, and one of the characteristics of the development of automobile technology is that more and more components are electronically controlled. The sensors utilized by the engine Control system are the core of the whole automobile sensor, the sensors are various and mainly comprise a temperature sensor, a pressure sensor, a position and rotating speed sensor, a flow sensor, a gas concentration sensor, a knock sensor and the like, and the sensors acquire signals and send the signals to an Electronic Control Unit (ECU) so that the ECU can accurately Control the working condition of the engine to improve the dynamic property of the engine, reduce the oil consumption, reduce the exhaust emission and detect faults. In addition, with the improvement of living standard, people's demand for automobile peripheral equipment is also higher, for example, vehicle event data recorder, car audio, vehicle bluetooth. The trend in the development of such vehicles places higher demands on the electronic control unit, and different sensors and peripherals require different supply voltages and also higher reliability.
However, under the condition that the design of a hardware circuit is not changed in the conventional electronic control unit, the output power supply voltage can only be a fixed value, the output voltage value cannot be adjusted according to different requirements, and the reliability is still to be improved.
Disclosure of Invention
The invention provides a power supply circuit and a power supply method for supplying power to an ECU (electronic control Unit) peripheral, which solve the problems that the output power supply voltage can only be a fixed value, the output voltage value cannot be adjusted according to different requirements and the reliability needs to be improved under the condition that the design of a hardware circuit is not changed in the conventional electronic control unit.
In a first aspect, the present invention provides a power supply circuit for supplying power to an ECU peripheral, including a reference voltage adjusting module, a power supply module, and a voltage stabilizing module, wherein:
the output end of the reference voltage adjusting module is connected with the first input end of the voltage stabilizing module and used for determining the reference voltage of the output end according to the power supply voltage of the electronic control unit ECU peripheral equipment;
the input end of the power supply module is connected with the voltage input end of the ECU, the output end of the power supply module is connected with the second input end of the voltage stabilizing module, and the power supply module is used for converting the voltage input by the voltage input end of the ECU into an intermediate voltage and supplying power to the voltage stabilizing module through the second input end;
and the voltage stabilizing module is used for stabilizing the reference voltage input by the first input end to obtain corresponding output voltage and outputting the output voltage to the corresponding ECU peripheral.
Optionally, the reference voltage adjusting module includes:
The output end of the micro control unit MCU is connected with the input end of the digital-analog conversion module and used for determining serial data output by the output end according to the power supply voltage externally arranged on the ECU;
the output end of the digital-analog conversion module is connected with the input end of the operational amplification module and is used for performing digital-analog conversion on the serial data to obtain a first voltage;
and the output end of the operational amplification module is connected with the first input end of the voltage stabilizing module and is used for expanding the first voltage into reference voltage and outputting the reference voltage to the voltage stabilizing module.
Optionally, the reference voltage regulating module includes at least one output terminal, and each output terminal is connected to one voltage stabilizing module.
Optionally, determining the reference voltage of the output terminal according to the power supply voltage of the ECU peripheral device includes:
determining a power supply voltage of the ECU peripheral equipment, wherein the ECU peripheral equipment comprises an automobile sensor and automobile peripheral equipment;
and controlling the reference voltage of an output end according to the accuracy requirement that the power supply voltage and the reference voltage are close to the power supply voltage.
Optionally, the output end of the voltage stabilizing module is connected to at least one ECU peripheral, and the connection mode between the voltage stabilizing module and the at least one ECU peripheral includes:
In the at least one ECU peripheral connected with the voltage stabilizing module, the difference value of the power supply voltages between any two ECU peripherals is smaller than a preset threshold value; or alternatively
The output end of the voltage stabilizing module is connected with the input end of at least one multi-way switch, and the output end of each multi-way switch is connected with at least one ECU peripheral.
Optionally, the power supply module is a switching regulator.
Optionally, the voltage stabilizing module is a voltage follower.
In a second aspect, the present invention provides a power supply method for supplying power to an ECU peripheral, the method comprising:
converting the voltage input by the voltage input end of the ECU into an intermediate voltage through a power supply module, and supplying power to the voltage stabilizing module through a second input end of the voltage stabilizing module;
determining a reference voltage of an output end through a reference voltage adjusting module according to a power supply voltage externally arranged on the ECU, and outputting the reference voltage to a first input end of a voltage stabilizing module through the output end;
and the voltage stabilizing module is used for stabilizing the reference voltage input by the first input end to obtain corresponding output voltage and outputting the output voltage to the corresponding ECU peripheral.
Optionally, determining, by the reference voltage adjusting module, the reference voltage of the output terminal according to the power supply voltage of the ECU peripheral device includes:
Determining a reference voltage of an output end according to the power supply voltage of at least one ECU peripheral connected with the voltage stabilizing module when the difference value of the power supply voltage between any two ECU peripherals is smaller than a preset threshold value; or alternatively
And determining the reference voltage of the output end according to the power supply voltage of at least one ECU peripheral connected with the multi-way switch connected with the voltage stabilizing module.
Optionally, the reference voltage adjusting module includes:
the output end of the micro control unit MCU is connected with the input end of the digital-analog conversion module and used for determining serial data output by the output end according to the power supply voltage externally arranged on the ECU;
the output end of the digital-analog conversion module is connected with the input end of the operational amplification module and is used for performing digital-analog conversion on the serial data to obtain a first voltage;
and the output end of the operational amplification module is connected with the first input end of the voltage stabilizing module and is used for expanding the first voltage into reference voltage and outputting the reference voltage to the voltage stabilizing module.
Optionally, the reference voltage regulating module includes at least one output terminal, and each output terminal is connected to one voltage stabilizing module.
Optionally, determining the reference voltage of the output terminal according to the supply voltage of the ECU peripheral includes:
Determining a power supply voltage of the ECU peripheral, wherein the ECU peripheral comprises an automobile sensor and automobile peripheral equipment;
and controlling the reference voltage of an output end according to the precision requirement that the power supply voltage and the reference voltage are close to the power supply voltage.
Optionally, the output end of the voltage stabilizing module is connected to at least one ECU peripheral, and the connection manner of the voltage stabilizing module and the at least one ECU peripheral includes:
in the at least one ECU peripheral connected with the voltage stabilizing module, the difference value of the power supply voltages between any two ECU peripherals is smaller than a preset threshold value; or alternatively
The output end of the voltage stabilizing module is connected with the input end of at least one multi-way switch, and the output end of each multi-way switch is connected with at least one ECU peripheral.
Optionally, the power supply module is a switching regulator.
Optionally, the voltage stabilizing module is a voltage follower.
In a third aspect, the present invention provides a computer program medium having stored thereon a computer program which, when executed by a processor, implements the steps of a power supply method for supplying power to an ECU peripheral as provided in the second aspect above.
The invention provides a power supply circuit and a power supply method for supplying power to ECU (electronic control unit) peripheral equipment, which have the following beneficial effects:
The problems that the output power supply voltage of the conventional electronic control unit can only be a fixed value and cannot be adjusted according to different requirements under the condition that the design of a hardware circuit is not changed, and the reliability is still to be improved are solved, the output voltage of the electronic control unit is adjustable, different types of automobile sensors and automobile peripheral equipment can be matched, the flexibility and the reliability of the electronic control unit are enhanced, and the electronic control unit can adapt to different implementation scenes.
Drawings
FIG. 1 is a schematic diagram of a conventional power supply circuit for supplying power to an ECU peripheral according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a power supply circuit for supplying power to an ECU peripheral according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a reference voltage regulation module according to an embodiment of the present invention;
FIG. 4 is a diagram of a two-output reference voltage regulation module according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a voltage stabilization module connected to a plurality of ECU peripherals according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating a voltage stabilizing module according to an embodiment of the present invention connected to a multi-way switch;
fig. 7 is a flowchart of a power supply method for supplying power to an ECU peripheral according to an embodiment of the present invention.
Detailed Description
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 some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
In the description of the embodiments of the present application, "a plurality" means two or more, and other terms are used similarly, it being understood that the preferred embodiments described herein are for the purpose of illustration and explanation only and are not intended to limit the present application, and that features in the embodiments and examples of the present application may be combined with each other without conflict.
It should be noted that the embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the disclosure, as detailed in the appended claims.
Hereinafter, some terms in the embodiments of the present disclosure are explained to facilitate understanding by those skilled in the art.
(1) In the embodiment of the present disclosure, the term "micro controller Unit" (MCU), also called Single Chip Microcomputer (Single Chip Microcomputer), or Single Chip Microcomputer (MCU) is a computer that appropriately reduces the frequency and specification of a Central Processing Unit (CPU), and integrates peripheral interfaces such as a memory (memory) and a counter (Timer) on a Single Chip to form a Chip.
(2) In the embodiment of the present disclosure, the term "Serial Peripheral Interface" (SPI) is a synchronous Serial communication Interface specification for short-distance communication in an embedded system, and is widely used in various MCU processors.
To further explain the technical solutions provided by the embodiments of the present application, the following detailed description is made with reference to the accompanying drawings and the specific embodiments. Although the embodiments of the present application provide method steps as shown in the following embodiments or figures, more or fewer steps may be included in the method based on conventional or non-inventive efforts. In steps where no necessary causal relationship exists logically, the order of execution of these steps is not limited to the order of execution provided by the embodiments of the present application. The method can be executed in the order of the embodiments or the method shown in the drawings or in parallel in the actual process or the control device.
In the 24V truck system, when the truck is stably operated, the input voltage to the controller ECU is about 28V, and the power supply voltage of most sensors and car peripherals is 10V or less, so that the sensors cannot be directly supplied with power by the battery voltage.
The existing power supply circuit for supplying power to the ECU peripheral utilizes two-stage voltage reduction to stably output a relatively accurate voltage to supply power to a sensor or automobile peripheral equipment.
As shown in fig. 1, the embodiment of the present invention provides a schematic diagram of an existing power supply circuit for supplying power to an ECU peripheral.
The input end of the DC-DC switching regulator is connected with the voltage input end of the ECU and outputs an intermediate voltage of about 12V.
Because the output ripple of the intermediate voltage is large, a linear voltage stabilizer is connected to the output end of the direct current-direct current switching voltage stabilizer for voltage stabilization, and the linear voltage stabilizer outputs a fixed value of output voltage to supply power to a sensor or peripheral equipment of an automobile.
The conventional power supply circuit for supplying power to the ECU peripheral can only output the output voltage set by one linear voltage stabilizer, and cannot be matched with sensors and automobile peripheral equipment with different power supply voltages according to specific implementation requirements, so that the flexibility of the system is low.
In view of the problems that the output power supply voltage can only be a fixed value, the output voltage value cannot be adjusted according to different requirements and the reliability needs to be improved under the condition that the design of a hardware circuit of the existing electronic control unit is not changed, the power supply circuit and the power supply method for supplying power to the ECU peripheral equipment are provided.
The following describes in detail a power supply circuit and a power supply method for supplying power to an ECU peripheral in an embodiment of the present application with reference to the drawings.
Example 1
As shown in fig. 2, a schematic diagram of a power supply circuit for supplying power to an ECU peripheral is provided for an embodiment of the present invention, and includes a reference voltage adjusting module 201, a power supply module 202, and a voltage stabilizing module 203, where:
the output end of the reference voltage adjusting module 201 is connected with the first input end of the voltage stabilizing module and used for determining the reference voltage of the output end according to the power supply voltage of the electronic control unit ECU peripheral equipment;
the reference voltage regulating module may be an integrally integrated module, or may be a connection combination of a plurality of modules.
As shown in fig. 3, an embodiment of the invention provides a schematic diagram of a reference voltage adjusting module, including:
the output end of the micro control unit MCU is connected with the input end of the digital-analog conversion module and used for determining serial data output by the output end according to the power supply voltage externally arranged on the ECU;
It should be noted that the output end of the micro control unit is a serial peripheral interface.
The MCU realizes serial data communication with the digital-analog conversion module through the SPI, and controls the digital-analog conversion module to output a voltage which can be controlled by the MCU.
It should be noted that the program software program in the micro control unit may be flash written by the service station.
The output voltage is regulated based on the supply voltage of the ECU peripheral, the program for flashing, in the specific implementation.
And modifying the program in the micro control unit according to the peripheral power supply voltage of the ECU, and changing the value of the reference voltage output by the reference voltage adjusting module, thereby avoiding unnecessary time brought by hardware modification and improving the flexibility and maintainability of ECU matching.
The output end of the digital-analog conversion module is connected with the input end of the operational amplification module and is used for performing digital-analog conversion on the serial data to obtain a first voltage;
the digital-analog conversion module is a digital-analog converter or a digital-analog conversion circuit.
It should be noted that any module capable of performing digital-to-analog conversion on serial data to obtain an analog signal may be applied to the embodiment of the present invention.
As an alternative embodiment, the first voltage is any voltage in the range of 0 to 5V.
And the output end of the operational amplification module is connected with the first input end of the voltage stabilizing module and is used for expanding the first voltage into reference voltage and outputting the reference voltage to the voltage stabilizing module.
The operational amplification module is an operational amplifier or an operational amplification circuit.
It should be noted that any module capable of expanding the input voltage may be applied to the embodiment of the present invention.
The reference voltage is close to the power supply voltage of the ECU peripheral equipment.
As an optional implementation, the operational amplification module expands the first voltage to a reference voltage in a range of 0 to 10V.
The above-mentioned reference voltage of output is confirmed according to the power supply voltage of the peripheral hardware of the ECU of the electronic control unit includes:
determining a power supply voltage of the ECU peripheral equipment, wherein the ECU peripheral equipment comprises an automobile sensor and automobile peripheral equipment;
the power supply voltage of the ECU peripheral may be determined according to information such as the model and usage requirements of the ECU peripheral.
And controlling the reference voltage of an output end according to the accuracy requirement that the power supply voltage and the reference voltage are close to the power supply voltage.
It should be noted that the precision of the reference voltage at the output end is controlled by controlling the precision of the digital-to-analog conversion module and the operational amplification module, so as to solve the problem that the precision of the reference voltage at the output end is limited by the precision of the linear voltage regulator in the prior art.
It should be noted that the reference voltage adjusting module includes at least one output terminal, and each output terminal is connected to one voltage stabilizing module.
The reference voltage adjusting module with two output terminals is taken as an example to be described below, and as shown in fig. 4, an embodiment of the present invention provides a schematic diagram of a reference voltage adjusting module with two output terminals.
An output end 1 of the reference voltage adjusting module outputs a reference voltage 1 to a first input end of a voltage stabilizing module 1, and the voltage stabilizing module 1 stabilizes the reference voltage 1 input by the first input end to obtain a corresponding output voltage 1;
the output end 2 of the reference voltage adjusting module outputs the reference voltage 2 to the first input end of the voltage stabilizing module 2, and the voltage stabilizing module 2 stabilizes the reference voltage 2 input by the first input end to obtain the corresponding output voltage 2.
It should be noted that fig. 4 is only an exemplary illustration of the reference voltage adjusting module at two output ends in the embodiment of the present invention, and is not limited to the embodiment of the present invention, and any implementation manner that can achieve the technical problem of the present application may be applied to the embodiment of the present invention, on this basis, the modules in fig. 4 may be increased or decreased, for example, the two output ends of the reference voltage adjusting module are connected to a multiplexer, and the two output ends of the multiplexer are respectively connected to the voltage stabilizing module 1 and the voltage stabilizing module 2.
All the drawings in the embodiments of the present invention do not limit the embodiments of the present invention, and increase, decrease, and modification may be performed according to specific embodiments, and details are not repeated in the following description of the drawings.
The input end of the power supply module 202 is connected with the voltage input end of the ECU, the output end of the power supply module is connected with the second input end of the voltage stabilizing module, and the power supply module is used for converting the voltage input by the voltage input end of the ECU into an intermediate voltage and supplying power to the voltage stabilizing module through the second input end;
in an alternative embodiment, the power supply module is a switching regulator.
The power supply module converts the voltage input by the voltage input end of the ECU into an intermediate voltage, and the intermediate voltage is about 12V and supplies power to the voltage stabilizing module.
And the voltage stabilizing module 203 is configured to stabilize the reference voltage input by the first input terminal, obtain a corresponding output voltage, and output the corresponding output voltage to a corresponding ECU peripheral.
The voltage stabilizing module has the characteristic that the output voltage is equal to the reference input voltage.
As an optional implementation manner, the voltage stabilizing module is a voltage follower TRACKER.
It should be noted that the output end of the voltage stabilizing module is connected with at least one ECU peripheral.
The connection mode of the voltage stabilizing module and the at least one ECU peripheral equipment comprises the following steps:
Embodiment 1: in the at least one ECU peripheral connected with the voltage stabilizing module, the difference value of the power supply voltages between any two ECU peripherals is smaller than a preset threshold value;
as shown in fig. 5, an embodiment of the present invention provides a schematic diagram of a voltage stabilizing module connected to multiple ECU peripherals.
The difference between the power supply voltages of any two electronic control unit peripherals from the electronic control unit peripheral 1 to the electronic control unit peripheral n in fig. 5 is smaller than the preset threshold.
The preset threshold value is preset according to the voltage precision of the peripheral equipment of the electronic control unit in specific implementation conditions.
The electronic control unit peripherals 1 to n are directly connected with the voltage stabilizing module and use the output voltage of the voltage stabilizing module to supply power.
Embodiment 2: the output end of the voltage stabilizing module is connected with the input end of at least one multi-way switch, and the output end of each multi-way switch is connected with at least one ECU peripheral.
As shown in fig. 6, an embodiment of the invention provides a schematic diagram of a voltage regulator module connected to a multi-way switch.
The output end of the voltage stabilizing module in fig. 6 is connected with a multi-way switch, and the output end of the multi-way switch is connected with a plurality of ECU peripherals.
It should be noted that the connection modes of the multi-way switch and the ECU peripheral are various, one switch may be connected with one ECU peripheral, one switch may be connected with one or more ECU peripherals with small pressure difference, but the pressure difference of the ECU peripherals of a plurality of switches is larger, or one switch may be connected with a plurality of ECU peripherals with large pressure difference, and the corresponding ECU peripherals are powered by gating the corresponding switches.
In the above fig. 6, the electronic control unit peripheral 1 is turned on, the electronic control unit peripheral 2 is not connected to the electronic control unit peripheral n, the output voltage of the voltage stabilizing module is determined according to the power supply voltage of the electronic control unit peripheral 1, and the electronic control unit peripheral 1 supplies power by using the output voltage output by the voltage stabilizing module.
Example 2
An embodiment of the present invention provides a flowchart of a power supply method for supplying power to an ECU peripheral, as shown in fig. 7, including:
step S701, converting the voltage input by the voltage input end of the ECU into an intermediate voltage through a power supply module, and supplying power to the voltage stabilizing module through the second input end of the voltage stabilizing module;
step S702, determining a reference voltage of an output end through a reference voltage adjusting module according to a power supply voltage externally arranged on the ECU, and outputting the reference voltage to a first input end of a voltage stabilizing module through the output end;
And step S703, stabilizing the reference voltage input by the first input terminal by the voltage stabilization module to obtain a corresponding output voltage, and outputting the corresponding output voltage to a corresponding ECU peripheral.
Optionally, determining, by the reference voltage adjusting module, the reference voltage of the output terminal according to the power supply voltage of the ECU peripheral device includes:
determining a reference voltage of an output end according to the power supply voltage of at least one ECU peripheral connected with the voltage stabilizing module when the difference value of the power supply voltages of any two ECU peripherals is smaller than a preset threshold value; or
And determining the reference voltage of the output end according to the power supply voltage of at least one ECU peripheral connected with the multi-way switch connected with the voltage stabilizing module.
Optionally, the reference voltage adjusting module includes:
the output end of the micro control unit MCU is connected with the input end of the digital-analog conversion module and used for determining serial data output by the output end according to the power supply voltage externally arranged on the ECU;
the output end of the digital-analog conversion module is connected with the input end of the operational amplification module and is used for performing digital-analog conversion on the serial data to obtain a first voltage;
and the output end of the operational amplification module is connected with the first input end of the voltage stabilizing module and is used for expanding the first voltage into reference voltage and outputting the reference voltage to the voltage stabilizing module.
Optionally, the reference voltage regulating module includes at least one output terminal, and each output terminal is connected to one voltage stabilizing module.
Optionally, determining the reference voltage of the output terminal according to a power supply voltage of an ECU peripheral device includes:
determining a power supply voltage of the ECU peripheral, wherein the ECU peripheral comprises an automobile sensor and automobile peripheral equipment;
and controlling the reference voltage of an output end according to the precision requirement that the power supply voltage and the reference voltage are close to the power supply voltage.
Optionally, the output end of the voltage stabilizing module is connected to at least one ECU peripheral, and the connection manner of the voltage stabilizing module and the at least one ECU peripheral includes:
in the at least one ECU peripheral connected with the voltage stabilizing module, the difference value of the power supply voltages between any two ECU peripherals is smaller than a preset threshold value; or alternatively
The output end of the voltage stabilizing module is connected with the input end of at least one multi-way switch, and the output end of each multi-way switch is connected with at least one ECU peripheral.
Optionally, the power supply module is a switching regulator.
Optionally, the voltage stabilizing module is a voltage follower.
The present invention also provides a computer program medium having stored thereon a computer program that, when executed by a processor, implements the steps of a power supply method for supplying power to an ECU peripheral provided in embodiment 2 described above.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and in actual implementation, there may be other divisions, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not implemented. 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, devices or modules, and may be in an electrical, mechanical or other form.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present application may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may be stored in a computer readable storage medium.
In the above embodiments, all or part of the implementation may be realized by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product.
The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can store or a data storage device, such as a server, a data center, etc., that includes one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.
The technical solutions provided by the present application are introduced in detail, and the principles and embodiments of the present application are explained by applying specific examples in the present application, and the descriptions of the above examples are only used to help understanding the method and the core ideas of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, the specific implementation manner and the application scope may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present application.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. The utility model provides a power supply circuit to ECU peripheral hardware power supply which characterized in that, includes reference voltage adjusting module, power module and steady voltage module, wherein:
the reference voltage adjusting module comprises a Micro Control Unit (MCU), a digital-analog conversion module and an operational amplification module, wherein the output end of the MCU is connected with the input end of the digital-analog conversion module and used for determining serial data output by the output end according to the power supply voltage externally arranged on the ECU, the output end of the digital-analog conversion module is connected with the input end of the operational amplification module and used for performing digital-analog conversion on the serial data into first voltage, and the output end of the operational amplification module is connected with the first input end of the voltage stabilizing module and used for expanding the first voltage into reference voltage and outputting the reference voltage to the voltage stabilizing module; the reference voltage adjusting module comprises at least one output end, each output end is connected with a voltage stabilizing module and used for determining the peripheral power supply voltage of the ECU and controlling the reference voltage of the output end according to the precision requirement that the power supply voltage and the reference voltage are close to the power supply voltage; the input end of the power supply module is connected with the voltage input end of the ECU, the output end of the power supply module is connected with the second input end of the voltage stabilizing module, the power supply module is used for converting the voltage input by the voltage input end of the ECU into an intermediate voltage, and the power supply module is supplied with power through the second input end of the voltage stabilizing module;
The voltage stabilizing module is used for stabilizing the reference voltage input by the first input end to obtain corresponding output voltage and outputting the corresponding output voltage to the corresponding ECU peripheral;
wherein, the connection mode of the voltage stabilizing module and the at least one ECU peripheral equipment comprises: in the at least one ECU peripheral connected with the voltage stabilizing module, the difference value of the power supply voltages between any two ECU peripherals is smaller than a preset threshold value; or the output end of the voltage stabilizing module is connected with the input end of at least one multi-way switch, and the output end of each multi-way switch is connected with at least one ECU peripheral.
2. The power supply circuit of claim 1, wherein the reference voltage regulation module comprises:
the output end of the micro control unit MCU is connected with the input end of the digital-analog conversion module and used for determining serial data output by the output end according to the power supply voltage externally arranged on the ECU;
the output end of the digital-analog conversion module is connected with the input end of the operational amplification module and is used for performing digital-analog conversion on the serial data to obtain a first voltage;
and the output end of the operational amplification module is connected with the first input end of the voltage stabilizing module, and the operational amplification module is used for expanding the first voltage into a reference voltage within the range of 0-10V and outputting the reference voltage to the voltage stabilizing module.
3. The power supply circuit of claim 1, wherein the reference voltage regulation module comprises at least one output terminal, and each output terminal is connected to one voltage regulation module.
4. The power supply circuit according to claim 1, wherein determining the reference voltage of the output terminal from the power supply voltage of the ECU peripheral device comprises:
determining a power supply voltage of the ECU peripheral equipment, wherein the ECU peripheral equipment comprises an automobile sensor and automobile peripheral equipment;
and controlling the reference voltage of an output end according to the accuracy requirement that the power supply voltage and the reference voltage are close to the power supply voltage.
5. The power supply circuit according to claim 1, wherein the output terminal of the voltage stabilizing module is connected to at least one ECU peripheral, and the connection manner of the voltage stabilizing module and the at least one ECU peripheral comprises:
in the at least one ECU peripheral connected with the voltage stabilizing module, the difference value of the power supply voltages between any two ECU peripherals is smaller than a preset threshold value; or
The output end of the voltage stabilizing module is connected with the input end of at least one multi-way switch, and the output end of each multi-way switch is connected with at least one ECU peripheral.
6. The power supply circuit of claim 1, wherein the power supply module is a switching regulator.
7. The power supply circuit of claim 1, wherein the voltage regulation module is a voltage follower.
8. A power supply method for supplying power to an ECU peripheral, comprising:
converting the voltage input by the voltage input end of the ECU into an intermediate voltage through a power supply module, and supplying power to the voltage stabilizing module through a second input end of the voltage stabilizing module;
determining a reference voltage of an output end according to the power supply voltage of at least one ECU peripheral connected with the voltage stabilizing module when the difference value of the power supply voltage between any two ECU peripherals is smaller than a preset threshold value; or determining a reference voltage of an output end according to a power supply voltage of at least one ECU peripheral connected with a multi-way switch connected with the voltage stabilizing module, and outputting the reference voltage to a first input end of the voltage stabilizing module through the output end;
and stabilizing the reference voltage input by the first input end through the voltage stabilizing module to obtain corresponding output voltage and output the output voltage to corresponding ECU peripherals.
9. The method of claim 8, wherein determining the reference voltage at the output from a supply voltage of the ECU peripheral by a reference voltage adjustment module comprises:
Determining a reference voltage of an output end according to the power supply voltage of at least one ECU peripheral connected with the voltage stabilizing module when the difference value of the power supply voltage between any two ECU peripherals is smaller than a preset threshold value; or alternatively
And determining the reference voltage of the output end according to the power supply voltage of at least one ECU peripheral connected with the multi-way switch connected with the voltage stabilizing module.
10. A computer program medium, characterized in that a computer program is stored thereon, which program, when being executed by a processor, carries out the steps of a method for supplying power to an ECU peripheral as claimed in any one of claims 8 to 9.
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| CN202011499124.0A CN112631363B (en) | 2020-12-18 | 2020-12-18 | Power supply circuit and power supply method for supplying power to ECU (electronic control Unit) peripheral |
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| CN202011499124.0A CN112631363B (en) | 2020-12-18 | 2020-12-18 | Power supply circuit and power supply method for supplying power to ECU (electronic control Unit) peripheral |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3680784B2 (en) * | 2001-11-12 | 2005-08-10 | 株式会社デンソー | Power circuit |
| JP4780402B2 (en) * | 2006-06-27 | 2011-09-28 | 株式会社デンソー | Vehicle power supply |
| CN101277009A (en) * | 2007-03-30 | 2008-10-01 | 卢浩义 | Vehicle power supply circuit as well as semiconductor protection control system of electric apparatus electronic equipments |
| CN202215385U (en) * | 2011-08-31 | 2012-05-09 | 湖南奔腾动力科技有限公司 | Electronic control unit (ECU) device of engine management system (EMS) of diesel engine |
| JP5944172B2 (en) * | 2012-01-31 | 2016-07-05 | 富士通テン株式会社 | Power circuit |
| CN102700484B (en) * | 2012-06-15 | 2014-07-16 | 北京经纬恒润科技有限公司 | Power supply unit and car electronic control unit in car electronic control system |
| JP6269570B2 (en) * | 2015-05-14 | 2018-01-31 | トヨタ自動車株式会社 | Contactless power transmission equipment |
| CN105897095A (en) * | 2015-12-17 | 2016-08-24 | 荆州炬擎科技有限公司 | Voltage regulator capable of enabling generator to generate power stably when automobile drives at low idle speed |
| CN106907422B (en) * | 2015-12-23 | 2019-04-19 | 上海汽车集团股份有限公司 | Electrorheological fluid vibration damper and its control method, control unit, ECU and automobile |
| CN109600041A (en) * | 2019-01-14 | 2019-04-09 | 武汉精立电子技术有限公司 | A kind of low ripple regulated power supply output circuit |
| CN209727271U (en) * | 2019-05-24 | 2019-12-03 | 哈工大机器人（山东）智能装备研究院 | Calculus of differences amplifying circuit and image processing system for image processing system |
| CN110263590B (en) * | 2019-06-30 | 2021-10-08 | 潍柴动力股份有限公司 | Vehicle-mounted ECU and safety protection method thereof |
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