Electronic valve open circuit detection method, device and electronic valve control system

Abstract

The present application relates to an electronic valve open circuit detection method, an electronic valve control system, an electronic valve open circuit detection device, a storage medium and a computer program product, wherein the electronic valve open circuit detection method collects at least one current value and at least one Hall pulse number of the electronic valve according to a preset period; determines whether the electronic valve is open according to the current value and the Hall pulse number, thereby solving the problem of inaccurate electronic valve open circuit detection in related technologies and improving the accuracy of electronic valve open circuit detection.

Description

Technical Field

[0001] The present application relates to the field of electronic valve control, and in particular to an electronic valve open circuit detection method, an electronic valve control system, an electronic valve open circuit detection device, a storage medium, and a computer program product. Background Art

[0002] The water circulation system in new energy vehicles typically includes an electronic valve. The vehicle collects real-time temperatures from the valve, battery, and cockpit, analyzes their thermal requirements, and regulates flow to various locations through the valve, maintaining an ideal temperature for the valve, battery, and cockpit, thereby achieving efficient energy utilization. However, the electronic valve can vibrate during operation, potentially causing it to open.

[0003] In order to avoid mechanical failure caused by an open circuit of an electronic valve, the related technology collects the voltage value of the electronic valve to determine whether the electronic valve is open, so as to take corresponding measures to eliminate the fault in time. However, due to the large number of components in the electronic valve, the accuracy of the voltage collection data will be affected, resulting in the misjudgment of the open circuit of the electronic valve. Summary of the Invention

[0004] Based on this, it is necessary to provide an electronic valve open circuit detection method, an electronic valve control system, an electronic valve open circuit detection device, a storage medium and a computer program product that can more accurately detect the opening of an electronic valve in order to address the above technical problems.

[0005] In a first aspect, the present application provides a method for detecting an open circuit of an electronic valve, the method comprising:

[0006] collecting at least one current value and at least one Hall pulse number of the electronic valve according to a preset period;

[0007] Whether the electronic valve is open is determined according to the current value and the number of Hall pulses.

[0008] In one embodiment, determining whether the electronic valve is open according to the current value and the number of Hall pulses includes:

[0009] When it is determined that at least one current value is smaller than a preset current value and at least one Hall pulse number is the same, it is determined that the electronic valve is open.

[0010] In one embodiment, determining whether the electronic valve is open according to the current value and the number of Hall pulses includes:

[0011] When it is determined that N consecutive current values ​​are smaller than the preset current value and M consecutive Hall pulse numbers are the same, it is determined that the electronic valve is open.

[0012] In one embodiment, the method further comprises:

[0013] collecting at least one voltage value of the electronic valve according to a preset period;

[0014] Determine whether the electronic valve is open according to the voltage value.

[0015] In one embodiment, the method further comprises:

[0016] Collect the pulse signal of the electronic valve according to the preset period;

[0017] Determine whether the electronic valve is open according to the pulse signal.

[0018] In one embodiment, determining whether the electronic valve is open according to the pulse signal includes:

[0019] When it is determined that the pulse signal maintains the same level within the preset period, it is determined that the electronic valve is open.

[0020] In a second aspect, the present application further provides an electronic valve control system, the system comprising: an electronic valve and a control module, the electronic valve being connected to the control module; wherein,

[0021] The control module is used to implement any one of the electronic valve open circuit detection methods described in the first aspect.

[0022] In a third aspect, the present application further provides an electronic valve open circuit detection device, the device comprising: a current acquisition module, a Hall pulse number acquisition module, and a determination module; wherein,

[0023] The current acquisition module is used to acquire at least one current value of the electronic valve according to a preset period;

[0024] The Hall pulse number acquisition module is used to acquire at least one Hall pulse number of the electronic valve according to a preset period;

[0025] The determination module is used to determine whether the electronic valve is open according to the current value and the number of Hall pulses.

[0026] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the following steps:

[0027] collecting at least one current value and at least one Hall pulse number of the electronic valve according to a preset period;

[0028] Whether the electronic valve is open is determined according to the current value and the number of Hall pulses.

[0029] In a fifth aspect, the present application further provides a computer program product. The computer program product includes a computer program that, when executed by a processor, implements the following steps:

[0030] collecting at least one current value and at least one Hall pulse number of the electronic valve according to a preset period;

[0031] Whether the electronic valve is open is determined according to the current value and the number of Hall pulses.

[0032] The above-mentioned electronic valve open circuit detection method, electronic valve control system, electronic valve open circuit detection device, storage medium and computer program product collect at least one current value and at least one Hall pulse number of the electronic valve according to a preset period; determine whether the electronic valve is open based on the current value and the Hall pulse number, thereby solving the problem of inaccurate electronic valve open circuit detection in related technologies and improving the accuracy of electronic valve open circuit detection.

[0033] The details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0035] Figure 1 This is a flow chart of a method for detecting an open circuit of an electronic valve according to an embodiment of the present application;

[0036] Figure 2 This is a hardware structure block diagram of a control terminal of an electronic valve open circuit detection method according to an embodiment of the present application. DETAILED DESCRIPTION

[0037] In order to more clearly understand the purpose, technical solutions and advantages of the present application, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0038] Unless otherwise defined, the technical terms or scientific terms involved in this application should have the general meaning understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "an", "a", "the", "these" and the like in this application do not indicate quantitative restrictions, and they can be singular or plural. The terms "include", "comprise", "have" and any variants thereof involved in this application are intended to cover non-exclusive inclusions; for example, a process, method and system, product or device comprising a series of steps or modules (units) is not limited to the listed steps or modules (units), but may include unlisted steps or modules (units), or may include other steps or modules (units) inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "plurality" involved in this application refers to two or more. "And / or" describes the relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, and B exists alone. Generally, the character " / " indicates that the related objects are in an "or" relationship. The terms "first," "second," "third," etc. used in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0039] Electronic valves consist of a controller, motor, and Hall switch. These valves are typically installed in the water circulation system of new energy vehicles. The vehicle collects real-time temperatures from the drive motor, battery, and cockpit, analyzes their thermal requirements, and regulates flow to each location through the electronic valves, maintaining ideal temperatures for the motor, battery, and cockpit, thereby achieving efficient energy utilization. However, during operation, the electronic valves can vibrate, causing them to open and resulting in vehicle failure.

[0040] After research, it was found that in the relevant technology, the MCU (micro control unit) is used to detect the voltage at the electronic valve end to determine whether the electronic valve is open, or the current at the electronic valve end is detected to determine whether the electronic valve is open. However, when the MCU fails or the relevant components in the detection circuit fail, the single variable judgment method based on the voltage value or current value is prone to misjudgment, thereby reducing the accuracy of open circuit detection.

[0041] In order to solve the above problems, a method for detecting an open circuit of an electronic valve applied to an electronic valve is provided in this embodiment. Figure 1 FIG. 1 is a flow chart of the electronic valve open circuit detection method of this embodiment. Figure 1 As shown, the process includes the following steps:

[0042] Step S201 : collecting at least one current value and at least one Hall pulse number of the electronic valve according to a preset period.

[0043] The motor is installed in the electronic valve and is controlled by a controller to drive the valve core of the electronic valve to rotate. The controller can be a PCB circuit board. The current value can be collected through a sampling resistor. A Hall sensor is also installed in the electronic valve. The Hall sensor is connected to the motor and is used to collect Hall pulse signals. Specifically, the Hall pulse signal can be collected through a Hall switch and a magnetic ring. The Hall pulse number refers to the number of pulses read when the magnetic ring rotates on the Hall switch. The Hall switch is a magnetic sensor based on the Hall effect. The application of the Hall switch can detect electromagnetic fields and changes. The Hall switch has many advantages: sturdy structure, small size, light weight, long service life, easy installation, low functional loss, high frequency, vibration resistance, and no fear of damage or erosion by dust, oil stains, water vapor, and corrosion resistance.

[0044] Step S202: Determine whether the electronic valve is open according to the current value and the number of Hall pulses.

[0045] It is understandable that the corresponding data processing unit in the controller can perform data processing or logic operation on the current value and the number of Hall pulses to realize the determination of whether the electronic valve is open.

[0046] In steps S201 to S202, whether the electronic valve is open is determined by periodically collecting current values ​​and the number of Hall pulses, which solves the problem of inaccurate open circuit detection caused by the possibility of misjudgment in the electronic valve open circuit determination method in the related art that only uses voltage values ​​or current values, reduces misjudgment of electronic valve open circuit, and improves the accuracy of electronic valve open circuit detection.

[0047] It should be noted that if the current value is used alone to detect whether an electronic valve is open, a current value that is not actually useful for determining the problem may be collected when the MCU fails or related components in the detection circuit fail, leading to misjudgments and reducing the accuracy of open circuit detection. If the number of Hall pulses is used alone to detect whether an electronic valve is open, the number of Hall pulses remains unchanged even when the electronic valve is stalled, making it easy to misjudge a stall as an open valve, resulting in an erroneous judgment. Therefore, the electronic valve detection method provided in this embodiment can reduce misjudgments while improving the accuracy of electronic valve detection.

[0048] In order to avoid vehicle failure caused by misjudgment as much as possible, in some embodiments, determining whether the electronic valve is open based on the current value and the number of Hall pulses specifically includes: when it is determined that at least one current value is less than a preset current value and at least one Hall pulse number is the same, determining that the electronic valve is open.

[0049] The preset current value is set according to the current value collected in the actual historical electronic valve open circuit state.

[0050] In actual applications, the terminal current and number of Hall pulses of the electronic valve are collected according to a preset period. When the current value at a certain moment is detected to be less than the preset current value and the number of Hall pulses has not changed, the electronic valve is judged to be open, thereby avoiding vehicle failure caused by misjudgment to the greatest extent.

[0051] In order to further improve the accuracy of electronic valve detection, in some embodiments, determining whether the electronic valve is open based on the current value and the number of Hall pulses specifically includes: when it is determined that N consecutive current values ​​are less than the preset current value and M consecutive Hall pulse numbers are the same, determining that the electronic valve is open.

[0052] Among them, N and M are thresholds determined through historical data and experience. When N consecutive current values ​​are less than the preset current value and M consecutive Hall pulses are the same, there is a high possibility that the electronic valve is open. Therefore, when the above situation occurs, determining that the electronic valve is in an open state can ensure the accuracy of detection as much as possible.

[0053] Furthermore, to improve the accuracy of electronic valve detection, in addition to detecting the current value and the number of Hall pulses, the method further includes: collecting at least one voltage value of the electronic valve at a predetermined period; and determining whether the electronic valve is open based on the voltage value. The methods for collecting voltage values ​​and determining whether the electronic valve is open based on the voltage values ​​in this embodiment can be referenced to existing solutions and will not be further described here.

[0054] In one embodiment, to improve the accuracy of electronic valve detection, in addition to detecting the current value and the number of Hall pulses, the electronic valve pulse signal can also be collected at a preset period. Based on the pulse signal, whether the electronic valve is open is determined. If the pulse signal remains at the same level within the preset period, the electronic valve is determined to be open.

[0055] In actual applications, when the electronic valve is open, the pulse signal collected by the Hall sensor remains at a high or low level. Therefore, whether the electronic valve is open can be determined by detecting whether the pulse signal remains at the same level within a preset period.

[0056] It should be noted that the steps shown in the above process or the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0057] In one embodiment, an electronic valve control system is provided, comprising: an electronic valve and a control module, wherein the electronic valve is connected to the control module; wherein the control module is configured to implement the following steps:

[0058] Step S201, collecting at least one current value and at least one Hall pulse number of the electronic valve according to a preset period;

[0059] Step S202: Determine whether the electronic valve is open according to the current value and the number of Hall pulses.

[0060] In one embodiment, the control module is further configured to implement the following steps:

[0061] When it is determined that at least one current value is smaller than a preset current value and at least one Hall pulse number is the same, it is determined that the motor electronic valve is open.

[0062] In one embodiment, the control module is further configured to implement the following steps:

[0063] When it is determined that N consecutive current values ​​are less than the preset current value and M consecutive Hall pulse numbers are the same, it is determined that the motor electronic valve is open.

[0064] In one embodiment, the control module is further configured to implement the following steps:

[0065] At least one voltage value of the motor electronic valve is collected according to a preset period; and whether the motor electronic valve is open is determined according to the voltage value.

[0066] In one embodiment, the control module is further configured to implement the following steps:

[0067] The pulse signal of the motor electronic valve is collected according to a preset period; and whether the motor electronic valve is open is determined based on the pulse signal. If it is determined that the pulse signal remains at the same level within the preset period, the motor electronic valve is determined to be open.

[0068] The control module can be a PCB circuit board installed inside the electronic valve, and the corresponding control unit is integrated on the PCB circuit board. The control module can also be a control terminal, Figure 2 This is a hardware structure diagram of the control terminal of this embodiment. Figure 2 As shown, the control terminal may include one or more ( Figure 2Only one is shown) a processor 102 and a memory 104 for storing data, wherein the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA. The above-mentioned control terminal may also include a transmission device 106 for communication functions and an input and output device 108. The output device of the control terminal may include a display screen, which may be a liquid crystal display screen or an electronic ink display screen. The input device of the control terminal may be a touch layer covering the display screen, or a button, trackball or touchpad provided on the housing of the control terminal, or an external keyboard, touchpad or mouse, etc. It can be understood by those skilled in the art that Figure 2 The structure shown is only for illustration and does not limit the structure of the control terminal. Figure 2 More or fewer components than shown, or with Figure 2 Different configurations shown.

[0069] The memory 104 can be used to store computer programs, such as software programs and modules of application software, such as the computer program corresponding to any embodiment of the electronic valve open circuit detection method of this application. The processor 102 executes the computer program stored in the memory 104 to perform various functional applications and data processing, thereby implementing the electronic valve open circuit detection method. The memory 104 may include a high-speed random access memory and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some embodiments, the memory 104 may further include a memory remotely located relative to the processor 102, and such remote memory may be connected to the control terminal via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0070] The transmission device 106 is used to receive or transmit data via a network. The network may include a wireless network provided by a communications provider controlling the terminal. In one embodiment, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to enable communication with the Internet. In another embodiment, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0071] Those skilled in the art will understand that Figure 2The structure shown in the figure is only a block diagram of a part of the structure related to the scheme of the present application, and does not constitute a limitation on the control terminal to which the scheme of the present application is applied. The specific control terminal may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0072] In a third aspect, the present application further provides an electronic valve open circuit detection device, which includes: a current acquisition module, a Hall pulse number acquisition module, and a determination module; wherein,

[0073] The current acquisition module is used to acquire at least one current value of the electronic valve according to a preset period;

[0074] The Hall pulse number acquisition module is used to acquire at least one Hall pulse number of the electronic valve according to a preset period;

[0075] The determination module is used to determine whether the electronic valve is open according to the current value and the number of Hall pulses.

[0076] In some embodiments, the electronic valve open circuit detection device further includes a second determination module configured to determine that the electronic valve is open circuit when it is determined that at least one current value is less than a preset current value and at least one Hall pulse number is the same.

[0077] In some embodiments, the electronic valve open circuit detection device further includes a third determination module configured to determine that the electronic valve is open circuit when it is determined that N consecutive current values ​​are less than a preset current value and M consecutive Hall pulse numbers are the same.

[0078] In some embodiments, the electronic valve open circuit detection device further includes a voltage acquisition module for acquiring at least one voltage value of the electronic valve according to a preset period; and a fourth determination module for determining whether the electronic valve is open circuit according to the voltage value.

[0079] In some embodiments, the electronic valve open circuit detection device further includes a pulse signal acquisition module for acquiring a pulse signal of the electronic valve according to a preset period; and a fifth determination module for determining whether the electronic valve is open circuit based on the pulse signal.

[0080] In some embodiments, the electronic valve open circuit detection device further includes a sixth determination module configured to determine that the electronic valve is open circuit when it is determined that the pulse signal remains at the same level within a preset period.

[0081] In addition, in conjunction with the electronic valve open circuit detection method provided in the above embodiment, a storage medium can also be provided in this embodiment to implement the method. The storage medium stores a computer program; when the computer program is executed by a processor, the following steps are implemented:

[0082] Step S201, collecting at least one current value and at least one Hall pulse number of the electronic valve according to a preset period;

[0083] Step S202: Determine whether the electronic valve is open according to the current value and the number of Hall pulses.

[0084] In one embodiment, the computer program, when executed by a processor, further implements the following:

[0085] When it is determined that at least one current value is smaller than a preset current value and at least one Hall pulse number is the same, it is determined that the electronic valve is open.

[0086] In one embodiment, when the computer program is executed by a processor, it further implements the following:

[0087] When it is determined that N consecutive current values ​​are smaller than the preset current value and M consecutive Hall pulse numbers are the same, it is determined that the electronic valve is open.

[0088] In one embodiment, when the computer program is executed by a processor, it further implements the following:

[0089] At least one voltage value of the electronic valve is collected according to a preset period; and whether the electronic valve is open is determined according to the voltage value.

[0090] In one embodiment, when the computer program is executed by a processor, it further implements the following:

[0091] The electronic valve is detected by collecting pulse signals according to a preset period, and the electronic valve is detected to be open according to the pulse signals. If the pulse signals are detected to be at the same level within the preset period, the electronic valve is detected to be open.

[0092] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0093] Step S201, collecting at least one current value and at least one Hall pulse number of the electronic valve according to a preset period;

[0094] Step S202: Determine whether the electronic valve is open according to the current value and the number of Hall pulses.

[0095] In one embodiment, the computer program, when executed by a processor, further implements the following:

[0096] When it is determined that at least one current value is smaller than a preset current value and at least one Hall pulse number is the same, it is determined that the electronic valve is open.

[0097] In one embodiment, the computer program, when executed by a processor, further implements the following:

[0098] When it is determined that N consecutive current values ​​are smaller than the preset current value and M consecutive Hall pulse numbers are the same, it is determined that the electronic valve is open.

[0099] In one embodiment, the computer program, when executed by a processor, further implements the following:

[0100] At least one voltage value of the electronic valve is collected according to a preset period; and whether the electronic valve is open is determined according to the voltage value.

[0101] In one embodiment, the computer program, when executed by a processor, further implements the following:

[0102] The electronic valve is detected by collecting pulse signals according to a preset period, and the electronic valve is detected to be open according to the pulse signals. If the pulse signals are detected to be at the same level within the preset period, the electronic valve is detected to be open.

[0103] It should be noted that, for specific examples in this embodiment, reference may be made to the examples described in the above embodiments and optional implementation modes, and will not be repeated in this embodiment.

[0104] It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit it. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0105] Obviously, the accompanying drawings are merely examples or embodiments of the present application. A person skilled in the art can also apply the present application to other similar situations based on these drawings without inventive effort. Furthermore, it is understandable that, although the work involved in this development process may be complex and lengthy, certain design, manufacturing, or production changes based on the technical content disclosed in this application are merely routine technical means for a person skilled in the art and should not be considered to constitute a deficiency in the disclosure of the present application.

[0106] The term "embodiment" as used in this application refers to specific features, structures, or characteristics described in conjunction with the embodiment that can be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily mean that the embodiment is the same, nor does it mean that it is mutually exclusive with other embodiments and is independent or optional. It is understood, either explicitly or implicitly, by those skilled in the art that the embodiments described in this application can be combined with other embodiments when there is no conflict.

[0107] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of patent protection. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A method for detecting an open circuit of an electronic valve, characterized in that: The method comprises: collecting at least one current value and at least one Hall pulse number of the electronic valve according to a preset period; determining whether the electronic valve is open according to the current value and the number of Hall pulses; The method further comprises: Collect the pulse signal of the electronic valve according to the preset period; determining whether the electronic valve is open according to the pulse signal; when the electronic valve is open, the pulse signal remains in a high level or low level state; Determining whether the electronic valve is open according to the current value and the number of Hall pulses includes: When it is determined that at least one current value is less than a preset current value and at least one Hall pulse number is the same, determining that the electronic valve is open; or, When it is determined that N consecutive current values ​​are smaller than the preset current value and M consecutive Hall pulse numbers are the same, it is determined that the electronic valve is open.

2. The electronic valve open circuit detection method according to claim 1, characterized in that: The method further comprises: collecting at least one voltage value of the electronic valve according to a preset period; Determine whether the electronic valve is open according to the voltage value.

3. The electronic valve open circuit detection method according to claim 1, characterized in that: Determining whether the electronic valve is open according to the pulse signal includes: When it is determined that the pulse signal maintains the same level within the preset period, it is determined that the electronic valve is open.

4. An electronic valve control system, characterized in that: The system includes: an electronic valve and a control module, wherein the electronic valve is connected to the control module; The control module is used to implement the electronic valve open circuit detection method according to any one of claims 1 to 3.

5. An electronic valve open circuit detection device, characterized in that: The device includes: a current acquisition module, a Hall pulse number acquisition module, and a determination module; wherein, The current acquisition module is used to acquire at least one current value of the electronic valve according to a preset period; The Hall pulse number acquisition module is used to acquire at least one Hall pulse number of the electronic valve according to a preset period; The determining module is used to determine whether the electronic valve is open according to the current value and the number of Hall pulses; The electronic valve open circuit detection device further includes a pulse signal acquisition module, a second determination module, a third determination module, and a fifth determination module; The pulse signal acquisition module is used to acquire the pulse signal of the electronic valve according to a preset period; The fifth determining module is configured to determine whether the electronic valve is open according to the pulse signal; when the electronic valve is open, the pulse signal remains at a high level or a low level; The second determining module is configured to determine that the electronic valve is open when it is determined that at least one current value is less than a preset current value and at least one number of Hall pulses is the same; The third determination module is configured to determine that the electronic valve is open when it is determined that N consecutive current values ​​are less than a preset current value and M consecutive Hall pulse numbers are the same.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the electronic valve open circuit detection method according to any one of claims 1 to 3 are implemented.

7. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the electronic valve open circuit detection method according to any one of claims 1 to 3 are implemented.

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