CN115407254A - Method and device for detecting sensor signal short circuit power supply fault - Google Patents
Method and device for detecting sensor signal short circuit power supply fault Download PDFInfo
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Abstract
The invention discloses a method and a device for detecting a sensor signal short circuit power failure, wherein the detection method comprises the following steps: acquiring the sensor signal and a power supply voltage range; determining an overlap region range based on the sensor signal range and a supply voltage range; determining whether a fault has occurred based on the sensor signal voltage and the overlap region range. The method comprises the steps of obtaining a sensor signal and a power supply voltage range, and determining an overlapping area range based on the sensor signal range and the power supply voltage range; and then whether a fault occurs is judged according to the voltage of the sensor signal and the range of the overlapping area, the fault of a sensor signal short circuit power supply can be accurately diagnosed, the phenomena of false alarm fault and failure in reporting are prevented, and a new reference is provided for the design of a sensor signal fault detection system.
Description
Technical Field
The embodiment of the disclosure relates to the technical field of electronic product detection, in particular to a method and a device for detecting a fault of a sensor signal short-circuit power supply.
Background
With the shortage of energy and the aggravation of the problem of environmental pollution in modern society, new energy vehicles are receiving wide attention from all circles. Among them, in a new energy Vehicle such as a Battery Electric Vehicle (BEV) or a Plug-in hybrid Electric Vehicle (PHEV), a power Battery pack is connected to a direct current Bus (DC Bus) of the Vehicle, the DC Bus includes a positive DC Bus and a negative DC Bus, and a sensor is generally used to detect a current of a DC line, thereby identifying a short-circuit fault of the DC Bus or an overcurrent fault of a charging current.
In consideration of functional safety, the faults of open circuit, short circuit, clamping stagnation, parameter drift and the like of the sensor need to be detected in time so as to avoid the fault that the direct current line cannot be detected due to the fault of the sensor.
At present, for the detection of the short-circuit power failure of the sensor signal, the common method is to compare the signal voltage with the upper limit value of the range. Due to the fact that the sensors are various in types and different in parameters, the signal voltage range and the power supply voltage range are overlapped, and the method of only comparing the signal voltage with the range upper limit value is prone to false alarm or short circuit power supply faults of signals which are not reported. From the above analysis, it can be known that the current method for detecting the short-circuit power failure of the sensor has certain disadvantages, and a more accurate detection system and method are needed.
Disclosure of Invention
The embodiment of the disclosure provides a method and a device for detecting a short-circuit power failure of a sensor signal, which are used for at least solving the technical problem that the existing detection method is easy to misreport or fail to report the short-circuit power failure of the signal.
According to an aspect of the embodiments of the present disclosure, there is provided a method for detecting a sensor signal short-circuit power failure, including: acquiring the sensor signal and a power supply voltage range; determining an overlap region range based on the sensor signal range and a supply voltage range; determining whether a fault has occurred based on the sensor signal voltage and the overlap region range.
In an exemplary embodiment, before the determining whether the fault occurs based on the sensor signal voltage and the overlap region range, the method further comprises: and collecting the signal voltage and the power supply voltage of the sensor.
In an exemplary embodiment, the determining whether a fault has occurred based on the sensor signal voltage and the overlap region range includes: when the sensor signal is located in an overlap region, determining whether a fault occurs based on the sensor signal voltage and the power supply voltage; when the sensor signal is not within an overlap region, determining whether a fault has occurred based on the sensor signal voltage, the sensor signal voltage range, and the power supply voltage.
In an exemplary embodiment, the determining whether a fault occurs based on the sensor signal voltage and the power supply voltage when the sensor signal is located in the overlap region includes: when the voltage of the sensor is not equal to the power voltage, judging that the sensor has no short-circuit power failure; and when the voltage of the sensor is equal to the power voltage, judging that the sensor has a short-circuit power failure.
In an exemplary embodiment, the determining whether a fault has occurred based on the sensor signal voltage, the sensor signal voltage range, and the power supply voltage when the sensor signal is not located within an overlap region includes: determining whether there is an overlapping region of the sensor signal range and the supply voltage range; determining whether a fault has occurred based on the overlap region, the sensor signal voltage range, and the power supply voltage.
In one exemplary embodiment, the determining whether a fault has occurred based on the overlap region, the sensor signal voltage range, and the power supply voltage comprises: when there is no overlap of the sensor input signal voltage value range St and the power supply voltage value range Sp, when the sensor signal voltage does not exceed a sensor signal upper limit range V tu Judging that the sensor has no short circuit power failure; when the sensor signal voltage Vt is equal to the power supply voltage Vp and exceeds the sensor signal upper limit range V tu Judging that the sensor signal is short-circuited to cause a power failure; when the sensor signal voltage Vt is not equal to the power supply voltage Vp but exceeds the sensor signal upper limit range V tu When the sensor is in short circuit, judging that the sensor is not in short circuit power failure, but other failures can occur;
when the sensor input signal voltage range St overlaps with the power supply voltage range Sp, when the sensor signal voltage Vt is equal to the power supply voltage Vp and is not lower than the sensor signal voltage upper limit value V tu Judging that the sensor signal is in short circuit power failure; when the sensor signal voltage Vt is not equal to the power supply voltage Vp and is not lower than the upper limit value V of the sensor signal voltage tu When the sensor is in short circuit, judging that the sensor is not in short circuit power failure, but other failures can occur; when the sensor signal voltage Vt is less than the lower limit value V of the power supply voltage pd And if so, judging that the short-circuit power failure of the sensor signal does not occur.
In one exemplary embodiment, when the sensor voltage is equal to the supply voltage, the method further comprises: checking the sensor signal voltage and the power supply voltage for multiple times, and judging that the sensor signal has a short-circuit power supply fault when the checking result shows that the times that the sensor voltage is equal to the power supply voltage are higher than a preset threshold value; and when the checking result shows that the frequency that the sensor voltage is equal to the power supply voltage is not higher than a preset threshold value, judging that the sensor signal has no short-circuit power supply fault.
In a second aspect, an embodiment of the present disclosure further provides a device for detecting a sensor signal short-circuited power failure, including: the acquisition module is used for acquiring the sensor signal and the power supply voltage range; a determination module to determine an overlap region range based on the sensor signal range and a supply voltage range; and the judging module is used for judging whether a fault occurs or not based on the sensor signal voltage and the overlapping area range.
In a third aspect, an embodiment of the present disclosure further provides a computer-readable storage medium, where the storage medium stores a computer program, and the computer program is configured to execute the method for detecting a short-circuit power failure of a sensor signal in any of the above technical solutions.
In a fourth aspect, an embodiment of the present disclosure further provides an electronic device, where the electronic device includes: a processor; a memory for storing the processor-executable instructions; the processor is used for executing the method for detecting the short-circuit power failure of the sensor signal in any technical scheme.
As can be seen from the above, the embodiments of the present disclosure determine the overlap region range by acquiring the sensor signal and the power supply voltage range, and determining the overlap region range based on the sensor signal range and the power supply voltage range; and then whether a fault occurs is judged according to the voltage of the sensor signal and the range of the overlapping area, the fault of a sensor signal short circuit power supply can be accurately diagnosed, the phenomena of false alarm fault and failure in reporting are prevented, and a new reference is provided for the design of a sensor signal fault detection system.
In order to make the aforementioned objects, features and advantages of the present disclosure more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present disclosure, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of steps of a sensor signal short power failure detection method provided by the present disclosure;
FIG. 2 is a schematic diagram of a fault detection circuit provided by the present disclosure;
FIG. 3 is a schematic diagram of the voltage range overlap relationship provided by the present disclosure;
FIG. 4 is a flow chart of steps provided by the present disclosure to determine if a sensor has failed;
FIG. 5 is a block diagram of a sensor signal short circuit power failure detection arrangement provided by the present disclosure;
fig. 6 is a block diagram of an electronic device provided by the present disclosure.
Detailed Description
Specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, but the present disclosure is not limited thereto.
It will be understood that various modifications may be made to the embodiments disclosed herein. Accordingly, the foregoing description should not be construed as limiting, but merely as exemplifications of embodiments. Other modifications within the scope and spirit of the present disclosure will occur to those skilled in the art.
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure and, together with a general description of the disclosure given above, and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.
These and other characteristics of the present disclosure will become apparent from the following description of preferred forms of embodiment, given as non-limiting examples, with reference to the attached drawings.
It should also be understood that, although the present disclosure has been described with reference to some specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of the disclosure, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.
The above and other aspects, features and advantages of the present disclosure will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.
Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely examples of the disclosure that may be embodied in various forms. Well-known and/or repeated functions and structures have not been described in detail so as not to obscure the present disclosure with unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.
The specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the disclosure.
The present disclosure is further described with reference to the following figures and specific examples.
Example 1
The embodiment of the disclosure is used in the technical field of electronic product detection, and particularly relates to a method and a device for detecting a fault of a sensor signal short-circuit power supply.
FIG. 1 illustrates a flow chart of steps of a sensor signal short power failure detection method provided by the present disclosure; as shown in the figure, the method for detecting the short-circuit power failure of the sensor signal comprises the following steps:
s101, acquiring the sensor signal and the power supply voltage range.
In this step, the sensor signal and the supply voltage range are acquired. Specifically, taking a temperature sensor as an example, the sensor signal and the power supply voltage range are acquired, and the sensor signal voltage and the power supply voltage are acquired.
FIG. 2 shows a schematic of the fault detection circuit configuration in which the temperature sensor input signal is passed through a low pass filter circuit and then input to microcontroller analog signal input 1, identifying the sensor signal voltage as Vt; the power supply is the power supply of a sensor of an electronic control unit system, because the power supply of the sensor is usually the same as that of a pull-up power supply, the pull-up power supply voltage is collected in the figure 2, is input into a microcontroller analog signal input 2 after passing through a low-pass filtering and voltage division circuit, and the pull-up power supply voltage is identified as Vp; calculating a sensor input signal voltage range and a range of power supply voltage values, respectively, according to circuit principles and characteristics, wherein the sensor input signal voltage value range St = [ V ] td ,V tu ]The range of power supply voltage values Sp = [ V ] pd ,V pu ]。
S102; an overlap region range is determined based on the sensor signal voltage range and the supply voltage range.
After the above step S101 is completed, in this step, the overlap area range is determined based on the sensor signal voltage range and the power supply voltage range. FIG. 3 is a schematic diagram showing voltage range overlap, as shown in FIG. 3A, comparing the sensor signal range with the supply voltage range, when V pd ＞V tu When the voltage value range St of the sensor input signal is not overlapped with the voltage value range Sp of the power supply, the overlapping is not existed; when V is shown in FIG. 3B pd ≤V tu It is to be noted that the sensor input signal voltage value range St overlaps the power supply voltage value range Sp.
S103; determining whether a fault has occurred based on the sensor signal voltage and the overlap region range.
After determining the sensor signal voltage range and the power supply voltage range, determining whether a sensor is malfunctioning based on the sensor signal voltage and the overlap region range.
When the voltage value range St of the sensor input signal does not overlap with the voltage value range Sp of the power supply, whether the sensor signal is in an overlapping area or not does not need to be judged; when there is an overlap of the sensor input signal voltage value range St and the power supply voltage value range Sp, then when the acquired sensor signal voltage Vt satisfies V td ≦Vt≦V tu At this time, the sensor signal voltage Vt is in the overlap region.
Fig. 4 is a flowchart illustrating steps of determining whether a sensor fails, and as shown in the figure, the method specifically includes the following steps:
s201, when the sensor signal is located in the overlapping area, whether a fault occurs is judged based on the voltage of the sensor signal and the voltage of a power supply.
In this step, when it is determined that the sensor signal is located in the overlap region, it is determined whether a failure has occurred based on the sensor signal voltage and the power supply voltage.
Specifically, when the sensor signal voltage Vt is equal to the power supply voltage Vp, it is preliminarily determined that a short-circuit power failure occurs in the sensor signal; in order to accurately judge whether the short-circuit power supply fails or not, the sensor signal voltage and the power supply voltage can be checked for multiple times, and when the check result shows that the times that the sensor signal voltage Vt is equal to the power supply voltage Vp are higher than a preset threshold value, the sensor is judged to have the short-circuit power supply failure; and when the checking result shows that the frequency that the sensor signal voltage Vt is equal to the power supply voltage Vp is not higher than a preset threshold value, judging that the sensor has no short-circuit power supply fault.
Further, when the sensor signal voltage Vt is not equal to the power supply voltage Vp, it is determined that the short-circuit power failure has not occurred in the sensor signal;
and S202, when the sensor signal is not positioned in the overlapping area, judging whether a fault occurs or not based on the sensor signal voltage, the sensor signal voltage range and the power supply voltage.
In this step, when it is determined that the sensor signal is not located in the overlap region, it is determined whether a failure has occurred based on the sensor signal voltage, the sensor signal voltage range, and the power supply voltage.
In particular, when there is no overlap of the sensor input signal voltage value range St and the power supply voltage value range Sp, i.e. the overlap region is not present, the sensor signal is necessarily not located in the overlap region. At this time, comparing the collected sensor signal voltages Vt and V tu ：
When the voltage of the sensor signal does not exceed the upper limit range V of the sensor signal tu Judging that the sensor does not have short-circuit power supply fault; when the sensor signal voltage Vt is equal to the power supply voltage Vp and exceeds the sensor signal upper limit range V tu Judging that the sensor signal is short-circuited to cause a power failure; when the sensor signal voltage Vt is not equal to the power supply voltage Vp but exceeds the sensor signal upper limit range V tu When the sensor is determined not to have a short-circuit power failure, other failures may occur, such as a failure of the sensor itself, and the like.
When there is an overlap of the sensor input signal voltage value range St and the power supply voltage value range Sp, but the sensor signal voltage is not located in an overlap region:
when the sensor signal voltage Vt is equal to the power supply voltage Vp and is not lower than the upper limit value V of the sensor signal voltage tu Judging that the sensor signal is short-circuited to cause a power failure; when the sensor signal voltage Vt is not equal to the power supply voltage Vp and is not lower than the upper limit value V of the sensor signal voltage tu When the sensor is in short circuit, the sensor is judged not to have short circuit power failure, but other failures can occur, such as the failure of the sensor itself and the like; when the sensor signal voltage Vt is less than the lower limit value V of the power supply voltage pd And if so, judging that the short circuit power failure of the sensor signal does not occur.
In practical implementation of the above method, since the system inevitably has a certain detection error, an allowable error value Δ V may be set, and when an absolute value of a difference between Vt and Vp is smaller than a deviation threshold Δ V, (i.e., | Vt-Vp | < Δ V), vt = Vp may be considered, where the allowable error value Δ V may be set according to practical applications.
The detection method for the short-circuit power supply fault of the sensor signal provided by the embodiment of the disclosure comprises the steps of obtaining the sensor signal and a power supply voltage range, and determining an overlapping area range based on the sensor signal range and the power supply voltage range; and then whether a fault occurs is judged according to the sensor signal voltage and the overlapping area range, the short-circuit power supply fault of the sensor signal can be accurately diagnosed, the phenomena of false alarm fault and failure in reporting are prevented, and a new reference is provided for the design of a sensor signal fault detection system.
Example 2
To better implement the above method, a second aspect of the present disclosure also provides a detection device for a sensor signal short circuit power failure, which may be integrated on an electronic device.
For example, as shown in fig. 5, the detection apparatus 200 may include: the obtaining module 210, the determining module 220 and the determining module 230 are specifically as follows:
(1) An obtaining module 210, wherein the obtaining module 210 is configured to obtain the sensor signal and the power supply voltage range.
(2) A determination module 220, the determination module 220 to determine an overlap region range based on the sensor signal range and a supply voltage range.
(3) A determining module 230, wherein the determining module 230 is configured to determine whether a fault occurs based on the sensor signal voltage and the overlap region range.
Specifically, when the sensor signal is located in the overlap region, whether a fault occurs is judged based on the sensor signal voltage and the power supply voltage; when the sensor signal is not located in the overlap region, it is determined whether a failure has occurred based on the sensor signal voltage, the sensor signal voltage range, and the power supply voltage.
The detection device for the sensor signal short circuit power supply fault provided by the embodiment of the disclosure obtains the sensor signal and the power supply voltage range, and determines the range of the overlapping area based on the sensor signal range and the power supply voltage range; and then whether a fault occurs is judged according to the sensor signal voltage and the overlapping area range, the short-circuit power supply fault of the sensor signal can be accurately diagnosed, the phenomena of false alarm fault and failure in reporting are prevented, and a new reference is provided for the design of a sensor signal fault detection system.
Example 3
It will be understood by those skilled in the art that all or part of the steps of the methods of the above embodiments may be performed by instructions or by associated hardware controlled by the instructions, which may be stored in a computer readable storage medium and loaded and executed by a processor.
To this end, a third embodiment of the present disclosure provides a storage medium, which is a computer-readable medium, and stores a computer program, which when executed by a processor, implements the method for detecting a sensor signal short-circuit power failure provided by the embodiments of the present disclosure, including the following steps S11 to S13:
s11, acquiring a sensor signal and a power supply voltage range;
s12; determining an overlap region range based on the sensor signal range and a supply voltage range;
s13; determining whether a fault has occurred based on the sensor signal voltage and the overlap region range.
Further, the computer program, when executed by a processor, implements the other methods provided by any of the above embodiments of the present disclosure.
The detection method for the short-circuit power supply fault of the sensor signal provided by the embodiment of the disclosure comprises the steps of obtaining the sensor signal and a power supply voltage range, and determining an overlapping area range based on the sensor signal range and the power supply voltage range; and then whether a fault occurs is judged according to the sensor signal voltage and the overlapping area range, the short-circuit power supply fault of the sensor signal can be accurately diagnosed, the phenomena of false alarm fault and failure in reporting are prevented, and a new reference is provided for the design of a sensor signal fault detection system.
Example 4
A fourth embodiment of the present disclosure provides an electronic device, as shown in fig. 6, the electronic device at least includes a processor 401 and a memory 402, the memory 402 stores a computer program, and the processor 401, when executing the computer program on the memory 402, implements the method for detecting a sensor signal short-circuit power failure provided in any embodiment of the present disclosure. Illustratively, the method performed by the electronic device computer program is as follows:
s21, acquiring the sensor signal and the power supply voltage range;
s22; determining an overlap region range based on the sensor signal range and a supply voltage range;
s23; determining whether a fault has occurred based on the sensor signal voltage and the overlap region range.
In specific implementation, the obtaining module 210, the determining module 220, the determining module 230, and the like are all stored in the memory 402 as program units, and the processor 401 executes the program units stored in the memory 402 to implement corresponding functions.
The detection method for the short-circuit power supply fault of the sensor signal provided by the embodiment of the disclosure comprises the steps of obtaining the sensor signal and a power supply voltage range, and determining an overlapping area range based on the sensor signal range and the power supply voltage range; and then whether a fault occurs is judged according to the sensor signal voltage and the overlapping area range, the short-circuit power supply fault of the sensor signal can be accurately diagnosed, the phenomena of false alarm fault and failure in reporting are prevented, and a new reference is provided for the design of a sensor signal fault detection system.
The storage medium may be included in the electronic device; or may be separate and not incorporated into the electronic device.
The storage medium carries one or more programs that, when executed by the electronic device, cause the electronic device to: acquiring at least two internet protocol addresses; sending a node evaluation request comprising at least two internet protocol addresses to node evaluation equipment, wherein the node evaluation equipment selects the internet protocol addresses from the at least two internet protocol addresses and returns the internet protocol addresses; receiving an internet protocol address returned by the node evaluation equipment; wherein the obtained internet protocol address indicates an edge node in the content distribution network.
Alternatively, the storage medium carries one or more programs that, when executed by the electronic device, cause the electronic device to: receiving a node evaluation request comprising at least two internet protocol addresses; selecting an internet protocol address from at least two internet protocol addresses; returning the selected internet protocol address; wherein the received internet protocol address indicates an edge node in the content distribution network.
Computer program code for carrying out operations for the present disclosure may be written in any combination of one or more programming languages, including but not limited to an object oriented programming language such as Java, smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the passenger computer, partly on the passenger computer, as a stand-alone software package, partly on the passenger computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the passenger computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
It should be noted that the storage media described above in this disclosure can be computer readable signal media or computer readable storage media or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In contrast, in the present disclosure, a computer readable signal medium may comprise a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may be any storage medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. Program code embodied on a storage medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, optical cables, RF (radio frequency), etc., or any suitable combination of the foregoing.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units described in the embodiments of the present disclosure may be implemented by software or hardware. Where the name of an element does not in some cases constitute a limitation on the element itself.
The functions described herein above may be performed, at least in part, by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems on a chip (SOCs), complex Programmable Logic Devices (CPLDs), and the like.
In the context of this disclosure, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The foregoing description is only exemplary of the preferred embodiments of the disclosure and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the disclosure herein is not limited to the particular combination of features described above, but also encompasses other embodiments in which any combination of the features described above or their equivalents does not depart from the spirit of the disclosure. For example, the above features and the technical features disclosed in the present disclosure (but not limited to) having similar functions are replaced with each other to form the technical solution.
Further, while operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the disclosure. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
While the present disclosure has been described in detail with reference to the embodiments, the present disclosure is not limited to the specific embodiments, and those skilled in the art can make various modifications and alterations based on the concept of the present disclosure, and the modifications and alterations should fall within the scope of the present disclosure as claimed.
Claims (10)
1. A method for detecting a sensor signal short circuit power failure is characterized by comprising the following steps:
acquiring the sensor signal and a power supply voltage range;
determining an overlap region range based on the sensor signal range and a supply voltage range;
determining whether a fault has occurred based on the sensor signal voltage and the overlap region range.
2. The fault detection method of claim 1, wherein prior to the determining whether a fault has occurred based on the sensor signal voltage and the overlap region range, the method further comprises:
and collecting the signal voltage of the sensor and the power supply voltage.
3. The fault detection method of claim 1, wherein said determining whether a fault has occurred based on the sensor signal voltage and the overlap region range comprises:
when the sensor signal is located in an overlap region, determining whether a fault occurs based on the sensor signal voltage and the power supply voltage;
when the sensor signal is not within an overlap region, determining whether a fault has occurred based on the sensor signal voltage, the sensor signal voltage range, and the power supply voltage.
4. The fault detection method of claim 3, wherein said determining whether a fault has occurred based on the sensor signal voltage and the power supply voltage when the sensor signal is within an overlap region comprises:
when the voltage of the sensor is not equal to the power voltage, judging that the sensor has no short-circuit power failure;
and when the voltage of the sensor is equal to the power voltage, judging that the sensor has a short-circuit power failure.
5. The fault detection method of claim 3, wherein said determining whether a fault has occurred based on the sensor signal voltage, the sensor signal voltage range, and the power supply voltage when the sensor signal is not within an overlap region comprises:
determining whether there is an overlapping region of the sensor signal range and the supply voltage range;
determining whether a fault occurs based on the overlap region, the sensor signal voltage range, and the power supply voltage.
6. The fault detection method of claim 5, wherein determining whether a fault has occurred based on the overlap region, the sensor signal voltage range, and the supply voltage comprises:
when there is no overlap of the sensor input signal voltage value range St and the power supply voltage value range Sp, when the sensor signal voltage does not exceed a sensor signal upper limit range V tu Judging that the sensor does not have short-circuit power supply fault; when the sensor signal voltage Vt is equal to the power supply voltage Vp and exceeds the sensor signal upper limit range V tu Judging that the sensor signal is in short circuit power failure; when the sensor signal voltage Vt is not equal to the power supply voltage Vp but exceeds the sensor signal upper limit range V tu When the sensor is in short circuit, judging that the sensor is not in short circuit power failure, but other failures can occur;
when the voltage range St of the sensor input signal overlaps the voltage range Sp of the power supply, when the voltage Vt of the sensor signal is equal to the voltage Vp of the power supply and is not lower than the upper limit value V of the voltage of the sensor signal tu Judging that the sensor signal is in short circuit power failure; when the sensor signal voltage Vt is not equal toThe power supply voltage Vp is not lower than the upper limit value V of the sensor signal voltage tu When the sensor is in short circuit, judging that the sensor is not in short circuit power failure, but other failures can occur; when the sensor signal voltage Vt is less than the lower limit value V of the power supply voltage pd And if so, judging that the short-circuit power failure of the sensor signal does not occur.
7. The fault detection method of claim 4, wherein when the sensor voltage is equal to a supply voltage, the method further comprises:
checking the signal voltage and the power supply voltage of the sensor for multiple times, and judging that the signal of the sensor has a short-circuit power supply fault when the times that the sensor voltage is equal to the power supply voltage is higher than a preset threshold value in the checking result; and when the checking result shows that the frequency that the sensor voltage is equal to the power supply voltage is not higher than a preset threshold value, judging that the short-circuit power supply fault does not occur in the sensor signal.
8. A sensor signal short circuit power failure detection device, comprising:
the acquisition module is used for acquiring the sensor signal and the power supply voltage range;
a determination module to determine an overlap region range based on the sensor signal range and a supply voltage range;
and the judging module is used for judging whether a fault occurs or not based on the sensor signal voltage and the overlapping area range.
9. A computer-readable storage medium, the storage medium storing a computer program for executing the detection method of any one of the preceding claims 1-7.
10. An electronic device, the electronic device comprising: a processor; a memory for storing the processor-executable instructions; the processor configured to perform the detection method of any one of claims 1 to 7.
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