Monitoring system and method for vehicle electronic valve body, electronic equipment and storage medium

Abstract

The invention discloses a monitoring system and method for a vehicle electronic valve body, electronic equipment and a storage medium. The system comprises an inlet and outlet end sensor array used for acquiring refrigerant state parameters at an inlet end and / or an outlet end; the current detection module is used for detecting the motor working current of the driving motor; the control unit is connected with the input and output end sensor array, the output end of the current detection module and a target electronic control unit of the air conditioning system, and is used for obtaining a valve body condition monitoring result of the electronic valve body based on the refrigerant state parameters, the motor working current and target opening degree parameters provided by the target electronic control unit, the target electronic control unit is used for controlling the running state of the air conditioning system, and the target opening parameter is used for representing the valve body opening which the target electronic control unit expects to reach by the electronic valve body. According to the invention, the technical problem of low timeliness and accuracy of condition monitoring of the vehicle electronic valve body in the prior art is solved.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more specifically, to a monitoring system, method, electronic device, and storage medium for vehicle electronic valve bodies. Background Technology

[0002] In a vehicle's air conditioning system, the electronic valve body is a crucial component responsible for precisely regulating the flow and pressure of the refrigerant, which is essential for maintaining the system's efficient operation. However, after prolonged use, the electronic valve body may experience malfunctions such as sticking or blockage due to impurities in the refrigerant, wear, or frost buildup. These malfunctions can directly lead to a decrease in cooling or heating efficiency and may even damage important components such as the compressor, increasing maintenance costs and vehicle downtime.

[0003] The relevant technologies face significant bottlenecks in monitoring the health status of electronic valve bodies. Most monitoring schemes rely on the overall performance feedback of the air conditioning system, such as the temperature regulation rate and cooling and heating effects. However, the deterioration of the air conditioning system's performance usually occurs after the faults have accumulated to a certain extent. This approach makes it difficult to detect the initial faults of the electronic valve bodies in a timely manner, increasing the difficulty of troubleshooting and resulting in low timeliness and accuracy of the relevant technologies for monitoring the condition of vehicle electronic valve bodies.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] This invention provides a monitoring system, method, electronic device, and storage medium for vehicle electronic valve bodies, to at least solve the technical problems of low timeliness and accuracy in monitoring the condition of vehicle electronic valve bodies in related technologies.

[0006] According to one aspect of the embodiments of this application, a monitoring system for a vehicle electronic valve body is provided, applied to a vehicle's air conditioning system. The air conditioning system includes at least a condenser and an evaporator, with a refrigerant pipeline connected between the condenser and the evaporator. Refrigerant flows in the refrigerant pipeline, and an electronic valve body is disposed on the refrigerant pipeline. The system includes: an inlet / outlet sensor array disposed on the refrigerant pipeline at the inlet and / or outlet ends of the electronic valve body, used to acquire refrigerant state parameters at the inlet and / or outlet ends; a current detection module, the detection end of which is connected to a drive motor, used to detect the motor operating current of the drive motor, wherein the drive motor is used to drive the electronic valve body to perform opening and closing actions; and a control unit connected to the output end of the inlet / outlet sensor array, the current detection module, and a target electronic control unit of the air conditioning system, used to obtain the valve body status monitoring result of the electronic valve body based on the refrigerant state parameters, the motor operating current, and the target opening degree parameter provided by the target electronic control unit, wherein the target electronic control unit is used to control the operating state of the air conditioning system, and the target opening degree parameter is used to characterize the valve body opening degree that the target electronic control unit expects the electronic valve body to achieve.

[0007] In this embodiment of the invention, the refrigerant state parameters include at least two of the following: a first refrigerant pressure parameter, a second refrigerant pressure parameter, and a refrigerant temperature parameter; the inlet / outlet sensor array includes at least two of the following: a first pressure sensor, disposed on the refrigerant pipeline at the inlet end, for acquiring the first refrigerant pressure parameter at the inlet end; a second pressure sensor, disposed on the refrigerant pipeline at the outlet end, for acquiring the second refrigerant pressure parameter at the outlet end; and a temperature sensor, disposed on the refrigerant pipeline at the outlet end, for acquiring the refrigerant temperature parameter at the outlet end.

[0008] In this embodiment of the invention, the system further includes an alarm module connected to the control unit, used to issue alarms using different types of alarm methods based on different fault conditions of the electronic valve body.

[0009] According to another aspect of the embodiments of this application, a monitoring method for a vehicle electronic valve body is also provided, applied to the aforementioned vehicle electronic valve body monitoring system, comprising: acquiring refrigerant state parameters at the inlet and / or outlet ends of the electronic valve body, motor operating current of a drive motor, and target opening parameters provided by a target electronic control unit of the air conditioning system, wherein the drive motor is used to drive the electronic valve body to perform opening and closing actions, the target electronic control unit is used to control the operating state of the air conditioning system, and the target opening parameters are used to characterize the valve body opening degree that the target electronic control unit expects the electronic valve body to reach; and obtaining the valve body condition monitoring result of the electronic valve body based on the refrigerant state parameters, motor operating current, and target opening parameters.

[0010] In this embodiment of the invention, the valve body condition monitoring result of the electronic valve body is obtained based on refrigerant state parameters, motor operating current, and target opening parameters. This includes: acquiring the air conditioning operating conditions of the air conditioning system, wherein the air conditioning operating conditions include at least one of the following: the air conditioning system operating mode and the environmental conditions of the air conditioning system; based on the air conditioning operating conditions, calling the target standard parameters corresponding to the air conditioning operating conditions from a preset set of standard parameters; and determining the valve body condition monitoring result based on the target standard parameters, refrigerant state parameters, motor operating current, and target opening parameters.

[0011] In this embodiment of the invention, the method further includes: obtaining the actual opening parameter of the electronic valve body and the standard duration in the target standard parameter; in response to the absolute difference between the actual opening parameter and the target opening parameter being greater than a preset absolute difference threshold and the duration being greater than the standard duration, determining that the valve body condition monitoring result indicates that the electronic valve body has a jamming fault.

[0012] In this embodiment of the invention, when the valve body condition monitoring result indicates that the electronic valve body has a jamming fault, the method further includes: obtaining the standard motor operating current in the target standard parameters; in response to the target opening parameter being greater than the actual opening parameter and the motor operating current being greater than the first current, determining the jamming fault as a valve closing jamming fault, wherein the first current is used to represent the product of a first preset multiple and the standard motor operating current; in response to the target opening parameter being less than the actual opening parameter and the motor operating current being less than the second current, determining the jamming fault as a valve opening jamming fault, wherein the second current is used to represent the product of a second preset multiple and the standard motor operating current, and the second preset multiple is less than the first preset multiple.

[0013] In this embodiment of the invention, the method further includes: acquiring a first refrigerant pressure parameter, a second refrigerant pressure parameter, and a refrigerant temperature parameter from the refrigerant state parameters, and acquiring a standard pressure difference value and a standard refrigerant temperature from the target standard parameters; determining a pressure difference value between the first refrigerant pressure parameter and the second refrigerant pressure parameter; and determining that the valve body condition monitoring result indicates a blockage fault in the electronic valve body in response to a pressure difference value greater than the target pressure difference value and a refrigerant temperature parameter less than the standard refrigerant temperature, wherein the target pressure difference value is used to represent the product of a third preset multiple and the standard pressure difference value.

[0014] According to another aspect of the embodiments of this application, an electronic device is also provided, including: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods in various embodiments of this application when it runs.

[0015] According to another aspect of the embodiments of this application, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored executable program, wherein, when the executable program is running, it controls the device where the computer-readable storage medium is located to perform the methods of various embodiments of this application.

[0016] According to another aspect of the embodiments of this application, a computer program product is also provided, including a computer program that, when executed by a processor, implements the methods of various embodiments of this application.

[0017] According to another aspect of the embodiments of this application, a computer program product is also provided, including a non-volatile computer-readable storage medium storing a computer program, which, when executed by a processor, implements the methods in various embodiments of this application.

[0018] According to another aspect of the embodiments of this application, a computer program is also provided, which, when executed by a processor, implements the methods of the various embodiments of this application.

[0019] In this embodiment of the invention, a vehicle electronic valve body monitoring system is applied to the vehicle's air conditioning system. The monitoring system includes: an inlet / outlet sensor array, installed on the refrigerant pipeline at the inlet and / or outlet of the electronic valve body, for acquiring refrigerant state parameters at the inlet and / or outlet; a current detection module, the detection end of which is connected to a drive motor for detecting the motor operating current of the drive motor, which drives the electronic valve body to perform opening and closing actions; and a control unit, connected to the output end of the inlet / outlet sensor array, the current detection module, and the target electronic control unit of the air conditioning system, for obtaining the valve body status monitoring result of the electronic valve body based on the refrigerant state parameters, the motor operating current, and the target opening parameter provided by the target electronic control unit. The target electronic control unit is used to control the operating state of the air conditioning system, and the target opening parameter is used to characterize the valve body opening that the target electronic control unit expects the electronic valve body to achieve. By installing sensor arrays on the refrigerant lines at the inlet and / or outlet of the electronic valve body, various refrigerant status parameters at the inlet and / or outlet of the electronic valve body can be monitored in real time. Furthermore, through comprehensive analysis of multi-dimensional data, early warning and accurate diagnosis of electronic valve body faults can be achieved. Combining real-time monitoring data with analysis improves the real-time nature and accuracy of fault diagnosis, ensuring immediate monitoring of the electronic valve body's condition. The control unit can quickly identify abnormal states of the electronic valve body based on refrigerant status parameters, motor operating current, and target opening parameters, enabling early fault diagnosis. This helps to take timely measures to prevent faults from developing into systemic problems, reducing the cost and complexity of subsequent maintenance, effectively improving the safety and maintenance efficiency of the vehicle's air conditioning system, and thus solving the technical problem of low timeliness and accuracy in monitoring the condition of vehicle electronic valve bodies in related technologies. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of a vehicle electronic valve body monitoring system according to an embodiment of the present invention;

[0022] Figure 2 This is a flowchart of a method for monitoring a vehicle electronic valve body according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of an optional vehicle electronic valve body monitoring process according to an embodiment of the present invention. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0026] According to an embodiment of this application, a monitoring system for an electronic valve body of a vehicle is provided, which is applied to the air conditioning system of a vehicle. The air conditioning system includes at least a condenser and an evaporator, a refrigerant pipeline is connected between the condenser and the evaporator, refrigerant flows in the refrigerant pipeline, and an electronic valve body is provided on the refrigerant pipeline.

[0027] The aforementioned air conditioning system can refer to the equipment used in a vehicle to regulate air temperature, humidity, and cleanliness, and may include refrigeration systems, heating systems, and ventilation systems.

[0028] The aforementioned condenser can refer to a device in an air conditioning system used to cool and convert high-temperature, high-pressure refrigerant gas from the compressor into liquid, releasing heat to the surrounding air or water.

[0029] The aforementioned evaporator can refer to a device in an air conditioning system used to absorb heat from the surrounding air by the flowing low-temperature, low-pressure liquid refrigerant, causing the liquid refrigerant to evaporate into a gas, thereby lowering the air temperature. Inside a vehicle, the evaporator can be installed near the ventilation system in the driver's cabin, and the cooled air is blown into the vehicle through an air supply device.

[0030] The aforementioned refrigerant piping refers to the piping network in an air conditioning system used to transport refrigerant, ensuring that the refrigerant can circulate among multiple components such as the compressor, condenser, expansion valve, and evaporator.

[0031] The aforementioned electronic valve body can refer to an electromagnetically driven valve, such as an electronic expansion valve in an air conditioning system, which can be used to precisely regulate the flow and pressure of refrigerant. It can automatically adjust its opening degree according to the operating status and needs of the air conditioning system, thereby controlling the amount of refrigerant entering the evaporator, which can affect the cooling or heating efficiency of the air conditioner. It can be installed on the refrigerant pipeline between the condenser and the evaporator.

[0032] Figure 1 This is a schematic diagram of a vehicle electronic valve body monitoring system according to this application, such as... Figure 1 As shown, the monitoring system of the vehicle's electronic valve body includes: an inlet / outlet sensor array 102, a current detection module 104, and a control unit 106.

[0033] The inlet and outlet sensor array 102 is installed on the refrigerant pipeline at the inlet and / or outlet end of the electronic valve body to acquire refrigerant status parameters at the inlet and / or outlet end.

[0034] The aforementioned inlet / outlet sensor array refers to a series of sensors installed at the inlet and / or outlet ends of the electronic valve body. This array may include, but is not limited to, various sensors such as pressure and temperature sensors, which can be used to monitor refrigerant status parameters, such as pressure and temperature, at the inlet and / or outlet ends of the electronic valve body in real time. Data collected by the inlet / outlet sensor array can be used to determine the refrigerant's flow characteristics and thus infer the operating status of the electronic valve body.

[0035] The aforementioned refrigerant status parameters refer to the refrigerant's operating status information collected by the inlet and outlet sensor arrays, which may include, but are not limited to, parameters such as refrigerant pressure and temperature at the inlet and / or outlet. Changes in refrigerant status parameters can reflect the health status of the electronic valve body, such as whether there is jamming or blockage.

[0036] In one optional embodiment, an inlet / outlet sensor array can be installed on the refrigerant lines at the inlet and / or outlet ends of the electronic valve body. For example, multiple pressure sensors, temperature sensors, and other sensors can be installed on the refrigerant lines at the inlet and / or outlet ends of the electronic valve body. The inlet / outlet sensor array can possess high accuracy, a wide measurement range, and low latency to accurately capture minute changes in refrigerant parameters. The inlet / outlet sensor array can be connected to the control unit via hardwired or wireless means to form a real-time monitoring system for the electronic valve body's operating status. The inlet / outlet sensor array can also be configured to output easily processed electrical signals, such as analog or digital signals, facilitating subsequent signal processing and analysis. The inlet / outlet sensor array can also possess good environmental adaptability, enabling stable operation under complex environments such as temperature, humidity, and vibration during vehicle air conditioning system operation. Data transmission between the inlet / outlet sensor array and the control unit can employ a stable and reliable communication protocol to ensure the real-time performance and integrity of data transmission.

[0037] In the above setup, by installing a sensor array on the refrigerant pipeline at the inlet and / or outlet of the electronic valve body, various refrigerant status parameters at the inlet and / or outlet of the electronic valve body can be monitored in real time. Furthermore, through comprehensive analysis of multi-dimensional data, early warning and accurate diagnosis of electronic valve body faults can be achieved, effectively improving the safety and maintenance efficiency of the vehicle air conditioning system.

[0038] The current detection module 104 has its detection end connected to the drive motor and is used to detect the motor operating current of the drive motor, which is used to drive the electronic valve body to perform opening and closing actions.

[0039] The aforementioned current detection module refers to a module connected to the drive motor of the electronic valve body, used to monitor the operating current of the drive motor. Changes in the motor's operating current can reflect the load status of the drive motor, thereby determining whether there is any abnormality in the electronic valve body; for example, the motor's operating current will change abnormally when the valve body is stuck.

[0040] The aforementioned drive motor can refer to a motor used to drive the electronic valve body, which can receive control signals to drive the electronic valve body to perform opening and closing actions to regulate the refrigerant flow.

[0041] The aforementioned motor operating current refers to the current intensity passing through the motor when it is running. This parameter, motor operating current, reflects the load and efficiency of the drive motor and can be used as a data reference for judging whether the electronic valve body has malfunctioned.

[0042] In one optional embodiment, a current detection module can be included to collect the motor's operating current in real time and transmit it to the control unit to assist in determining whether the electronic valve body is experiencing faults such as jamming or blockage. The detection terminal of the current detection module can be connected in series with the power supply line of the drive motor to ensure accurate measurement of the current flowing through the drive motor. The current detection module can amplify, filter, and perform analog-to-digital conversion on the collected current signal to eliminate noise interference and convert the current signal into a digital signal for subsequent computer processing. The processed data can be sent to the control unit via a digital communication protocol to ensure real-time and accurate data transmission. The current detection module has good electromagnetic interference resistance, ensuring accurate current measurement even in the complex electromagnetic environment of a vehicle. It can also adapt to different operating conditions and temperature conditions, ensuring normal operation in various environments.

[0043] In the above setup, changes in the motor operating current can serve as a reference indicator for electronic valve body malfunctions. When the electronic valve body becomes stuck due to blockage, wear, or internal adhesion, the drive motor's operating current will abnormally increase or decrease in order to overcome the additional resistance. The current detection module can capture these changes in the motor operating current in real time, providing early warning of stuck malfunctions and reducing the accumulation of faults that could affect the overall performance of the air conditioning system. Real-time monitoring of the motor operating current allows for rapid response to abnormal states of the electronic valve body, preventing safety hazards such as motor overheating and damage caused by prolonged operation under high load conditions. Furthermore, timely fault identification and handling also help maintain the stable operation of the air conditioning system, extend component lifespan, and reduce maintenance costs.

[0044] The control unit 106 is connected to the output of the inlet and outlet sensor array, the current detection module, and the target electronic control unit of the air conditioning system. It is used to obtain the valve body condition monitoring results of the electronic valve body based on the refrigerant state parameters, motor operating current, and target opening parameters provided by the target electronic control unit. The target electronic control unit is used to control the operating state of the air conditioning system, and the target opening parameters are used to characterize the valve body opening that the target electronic control unit expects the electronic valve body to achieve.

[0045] The aforementioned target electronic control unit (ECU) can refer to the ECU of an air conditioning system. It is responsible for monitoring and controlling the operation of the entire air conditioning system, including refrigerant flow control, temperature regulation, fan speed, etc. The target ECU can send target opening parameters to the electronic valve body, guiding it to adjust to the required opening state.

[0046] The target opening parameter mentioned above refers to the desired opening degree of the electronic valve body by the target electronic control unit. This target opening parameter can be determined based on the current requirements of the air conditioning system.

[0047] The valve body condition monitoring results mentioned above refer to the operational status monitoring results of the electronic valve body obtained through comprehensive analysis of refrigerant status parameters, motor operating current, and target opening parameters. These results may include, but are not limited to, states such as jamming, blockage, and normal operation. They can be used to guide subsequent warnings and maintenance actions to ensure the normal operation of the electronic valve body and the air conditioning system.

[0048] In one optional embodiment, the control unit can be connected to the inlet / outlet sensor array, the current detection module, and the target electronic control unit. It is responsible for collecting and processing various types of data and determining the valve body condition based on refrigerant state parameters, motor operating current, and target opening parameters. The control unit may include a microprocessor, an analog-to-digital converter, a memory, and a communication interface. The microprocessor handles data processing and logical operations, the analog-to-digital converter converts analog signals to digital signals, the memory stores a standard parameter library and fault records, and the communication interface facilitates information exchange with other components. The control unit can also have a pre-installed fault diagnosis algorithm that comprehensively analyzes refrigerant state parameters, motor operating current, and target opening parameters to accurately determine the operating status of the electronic valve body, including whether it is stuck or blocked. The control unit can perform multi-parameter fusion analysis, forming more accurate valve body condition monitoring results by comprehensively considering the changing trends and interrelationships of various related signals.

[0049] In the above configuration, the control unit can quickly identify abnormal states of the electronic valve body based on refrigerant status parameters, motor operating current, and target opening parameters, enabling early fault diagnosis. This helps to take timely measures to prevent the fault from developing into a systemic problem, reducing the cost and complexity of subsequent maintenance. The control unit can distinguish between different types of jamming and blockage, such as valve closing jamming, valve opening jamming, and rapid or gradual blockage, which helps to accurately determine the cause of the fault and develop targeted solutions.

[0050] In this embodiment of the invention, a vehicle electronic valve body monitoring system is applied to the vehicle's air conditioning system. The monitoring system includes: an inlet / outlet sensor array, installed on the refrigerant pipeline at the inlet and / or outlet of the electronic valve body, for acquiring refrigerant state parameters at the inlet and / or outlet; a current detection module, the detection end of which is connected to a drive motor for detecting the motor operating current of the drive motor, which drives the electronic valve body to perform opening and closing actions; and a control unit, connected to the output end of the inlet / outlet sensor array, the current detection module, and the target electronic control unit of the air conditioning system, for obtaining the valve body status monitoring result of the electronic valve body based on the refrigerant state parameters, the motor operating current, and the target opening parameter provided by the target electronic control unit. The target electronic control unit is used to control the operating state of the air conditioning system, and the target opening parameter is used to characterize the valve body opening that the target electronic control unit expects the electronic valve body to achieve. By installing sensor arrays on the refrigerant lines at the inlet and / or outlet of the electronic valve body, various refrigerant status parameters at the inlet and / or outlet of the electronic valve body can be monitored in real time. Furthermore, through comprehensive analysis of multi-dimensional data, early warning and accurate diagnosis of electronic valve body faults can be achieved. Combining real-time monitoring data with analysis improves the real-time nature and accuracy of fault diagnosis, ensuring immediate monitoring of the electronic valve body's condition. The control unit can quickly identify abnormal states of the electronic valve body based on refrigerant status parameters, motor operating current, and target opening parameters, enabling early fault diagnosis. This helps to take timely measures to prevent faults from developing into systemic problems, reducing the cost and complexity of subsequent maintenance, effectively improving the safety and maintenance efficiency of the vehicle's air conditioning system, and thus solving the technical problem of low timeliness and accuracy in monitoring the condition of vehicle electronic valve bodies in related technologies.

[0051] In this embodiment of the invention, the refrigerant state parameters include at least two of the following: a first refrigerant pressure parameter, a second refrigerant pressure parameter, and a refrigerant temperature parameter; the inlet / outlet sensor array includes at least two of the following: a first pressure sensor, disposed on the refrigerant pipeline at the inlet end, for acquiring the first refrigerant pressure parameter at the inlet end; a second pressure sensor, disposed on the refrigerant pipeline at the outlet end, for acquiring the second refrigerant pressure parameter at the outlet end; and a temperature sensor, disposed on the refrigerant pipeline at the outlet end, for acquiring the refrigerant temperature parameter at the outlet end.

[0052] The aforementioned first pressure sensor can refer to a pressure sensor installed on the refrigerant pipeline at the inlet end of the electronic valve body, which can be used to monitor the pressure status of the refrigerant before it enters the electronic valve body in real time.

[0053] The aforementioned second pressure sensor can refer to a sensor installed on the refrigerant pipeline at the outlet end of the electronic valve body, responsible for collecting the refrigerant pressure at the outlet end of the electronic valve body. Under normal circumstances, the pressure difference between the inlet and outlet ends of the electronic valve body will remain within a certain range. An abnormally large pressure difference may indicate that there is a blockage in the electronic valve body, hindering the normal flow of refrigerant and affecting the cooling efficiency of the air conditioning system.

[0054] The aforementioned temperature sensor can refer to a sensor installed on the refrigerant pipeline at the outlet end of the electronic valve body to measure the temperature of the coolant and monitor the outlet temperature of the refrigerant.

[0055] In one optional embodiment, the first pressure sensor and the second pressure sensor can be installed on the refrigerant lines at the inlet and outlet ends of the electronic valve body, respectively, to ensure accurate measurement of the refrigerant pressure at both ends of the electronic valve body. A temperature sensor can be installed on the refrigerant line at the outlet end to capture real-time temperature changes. Each sensor can transmit the acquired signals to the control unit in analog or digital form.

[0056] In the above setup, by comprehensively analyzing the pressure difference and temperature at the inlet and outlet of the electronic valve body, the health status of the electronic valve body can be determined more accurately. This multi-dimensional data cross-validation method improves the accuracy and reliability of fault diagnosis. The real-time data acquisition capability of the sensor array, combined with the efficient computing of the control unit, enables early warning of potential faults in the electronic valve body. Timely fault identification allows for proactive measures to prevent fault progression, ensuring the stable operation of the air conditioning system and a positive user experience.

[0057] In this embodiment of the invention, the system further includes an alarm module connected to the control unit, used to issue alarms using different types of alarm methods based on different fault conditions of the electronic valve body.

[0058] The aforementioned alarm module refers to a module connected to the control unit, responsible for receiving and responding to fault signals issued by the control unit, and can issue warnings to the user in different ways. The alarm module may include warning lights on the instrument panel, buzzers or other visual and auditory signal devices, as well as communication modules capable of sending limiting commands to the vehicle's electronic control unit to automatically take safety measures or adjust the operating status of the air conditioning system.

[0059] The aforementioned fault conditions refer to abnormal or malfunctioning states of the electronic valve body, including malfunctions such as jamming and blockage. Jamming can be further subdivided into valve closing jamming and valve opening jamming, which respectively refer to situations where the valve fails to reach the target opening parameter due to mechanical or electrical reasons during the closing or opening process; blockage faults can be divided into partial blockage and complete blockage according to the degree of obstruction to refrigerant flow, which can be caused by impurities in the refrigerant, frost, or internal structural damage, affecting the normal flow and pressure of the refrigerant, thereby reducing the efficiency and stability of the air conditioning system.

[0060] In one optional embodiment, the alarm module can trigger corresponding alarms based on different fault types. It can also automatically adjust the air conditioning system's operating status through communication with the air conditioning system's electronic control unit (ECU) to prevent further fault development. The alarm module can employ different preset alarm strategies based on the ECU's fault diagnosis results. For example, for minor jamming faults, only the instrument panel warning light can be activated and fault information recorded; for more serious blockage faults, the warning light and buzzer can be activated, and instructions can be sent to the ECU via the controller area network bus to limit the compressor's output power and prevent air conditioning system overload. The warning light and buzzer in the alarm module can also be designed with a multi-level response mechanism. For minor faults, the warning light can remain constantly lit, making it easy for users to spot during routine checks; for more serious faults, the warning light can flash, accompanied by a buzzer alarm, ensuring that users can quickly notice the fault and take appropriate measures in emergencies. Through the controller area network bus or a similar in-vehicle communication network, the alarm module can interact with the electronic control unit of the air conditioning system in real time. When a fault is detected, the electronic control unit will receive a limiting command and automatically adjust the compressor speed or fan speed to reduce the impact of the faulty valve body on the entire air conditioning system and ensure driving safety.

[0061] The alarm module settings described above ensure timely feedback on electronic expansion valve malfunctions. Users can quickly identify the fault type and severity, taking appropriate maintenance or repair actions to prevent the fault from escalating and causing further damage to the air conditioning system. Through system-level responses, such as limiting compressor speed, the alarm module effectively avoids system overload caused by electronic expansion valve malfunctions, reducing safety hazards and protecting the air conditioning system and other related components from damage. The alarm module's multi-level response mechanism can promptly notify users of fault information and automatically take measures to reduce the impact of the fault on the air conditioning system's performance, minimizing user discomfort during fault occurrences and improving vehicle driving safety and user comfort.

[0062] Figure 2 This is a flowchart of a vehicle electronic valve body monitoring method according to an embodiment of this application, applied to the aforementioned vehicle electronic valve body monitoring system, such as... Figure 2As shown, the method includes the following steps:

[0063] Step S202: Obtain the refrigerant status parameters at the inlet and / or outlet of the electronic valve body, the motor operating current of the drive motor, and the target opening parameters provided by the target electronic control unit of the air conditioning system.

[0064] Among them, the drive motor is used to drive the electronic valve body to perform opening and closing actions, the target electronic control unit is used to control the operating status of the air conditioning system, and the target opening parameter is used to characterize the valve body opening degree that the target electronic control unit expects the electronic valve body to achieve.

[0065] Step S204: Based on the refrigerant state parameters, motor operating current, and target opening parameters, obtain the valve body condition monitoring results of the electronic valve body.

[0066] In this embodiment of the invention, the valve body condition monitoring result of the electronic valve body is obtained based on refrigerant state parameters, motor operating current, and target opening parameters. This includes: acquiring the air conditioning operating conditions of the air conditioning system, wherein the air conditioning operating conditions include at least one of the following: the air conditioning system operating mode and the environmental conditions of the air conditioning system; based on the air conditioning operating conditions, calling the target standard parameters corresponding to the air conditioning operating conditions from a preset set of standard parameters; and determining the valve body condition monitoring result based on the target standard parameters, refrigerant state parameters, motor operating current, and target opening parameters.

[0067] The aforementioned air conditioning operating conditions refer to the specific working state and environmental conditions of the air conditioning system during operation. This can include the system's operating modes, such as cooling, heating, dehumidification, and ventilation, as well as the environmental conditions, such as external temperature, humidity, number of occupants, and interior temperature settings. The diversity of air conditioning operating conditions necessitates adjusting fault detection standards according to current conditions to ensure accurate and adaptable diagnosis.

[0068] The aforementioned target standard parameters can refer to a set of preset performance parameters of the air conditioning system under specific operating conditions under normal circumstances. This application can set different target standard parameters for different air conditioning operating conditions, so as to enable targeted and accurate evaluation of the valve body condition of the electronic valve body in the air conditioning system under different air conditioning operating conditions.

[0069] In one optional embodiment, the electronic control unit of the air conditioning system can monitor and record air conditioning operating conditions in real time, such as the current operating mode, ambient temperature, and temperature difference between the inside and outside of the vehicle. The control unit can store a preset standard parameter library, which may contain target standard parameters corresponding to various air conditioning operating conditions. Upon receiving air conditioning operating condition information, the control unit can quickly locate the corresponding parameter library entry and call up the target standard parameter matching the current operating condition. Then, the control unit can compare and analyze the real-time collected refrigerant status parameters, motor operating current, and target opening parameters with the called target standard parameters. If the monitored data deviates from the expected range of the target standard parameters, the control unit can determine whether the electronic valve body has malfunctioned, such as jamming or blockage, based on the specific pattern and degree of deviation, and further refine the fault type, thereby determining the valve body condition monitoring results.

[0070] In the above process, by calling target standard parameters matched to the air conditioning operating conditions, accurate fault diagnosis can be made according to different operating modes and environmental conditions. Real-time acquisition of air conditioning operating condition information, immediate calling of target standard parameters, and analysis combined with real-time monitoring data can improve the real-time nature and accuracy of fault diagnosis, ensuring real-time monitoring of the electronic valve body's condition. By sensing the air conditioning operating conditions and calling the corresponding target standard parameters, the diagnostic standards can be dynamically adjusted according to different operating conditions, enhancing the accuracy and adaptability of electronic valve body fault diagnosis.

[0071] In this embodiment of the invention, the method further includes: obtaining the actual opening parameter of the electronic valve body and the standard duration in the target standard parameter; in response to the absolute difference between the actual opening parameter and the target opening parameter being greater than a preset absolute difference threshold and the duration being greater than the standard duration, determining that the valve body condition monitoring result indicates that the electronic valve body has a jamming fault.

[0072] The aforementioned actual opening parameter can refer to the parameter used to represent the current actual opening degree of the electronic valve body. It can be fed back to the control unit by the number of steps driven by the motor. By comparing it with the target opening parameter, it can be determined whether the electronic valve body has successfully executed the opening adjustment correctly according to the instruction.

[0073] The aforementioned standard duration can refer to a pre-set threshold used to determine the duration at which the absolute difference exceeds a preset absolute difference threshold.

[0074] The absolute difference mentioned above can refer to the absolute value of the difference between the actual opening parameter and the target opening parameter.

[0075] The aforementioned preset absolute difference threshold can refer to a pre-set threshold used to determine the magnitude of the absolute difference, which can be determined according to actual needs.

[0076] The aforementioned jamming fault refers to a situation where, during the opening and closing of the electronic valve body, due to internal mechanical friction, abnormal external pressure, or electrical control problems, the actual opening parameter fails to reach the target opening parameter, resulting in obstruction of valve opening or closing. Jamming faults lead to inaccurate refrigerant flow regulation, affecting the cooling efficiency of the air conditioning system.

[0077] In one optional embodiment, the control unit can continuously monitor the actual opening parameter of the electronic valve body and calculate the absolute difference between the actual and target opening parameters by comparing them with the target opening parameter sent by the target electronic control unit. When the absolute difference exceeds a preset absolute difference threshold, the control unit can start timing. If this state continues for more than a standard duration, it can be determined that the electronic valve body is stuck. The standard duration takes into account the dynamic response characteristics of the electronic valve body, ensuring the accuracy of fault diagnosis. The software algorithm built into the control unit can determine whether the electronic valve body has a stuck fault based on the absolute difference between the actual and target opening parameters and the duration.

[0078] In the above process, by comparing the absolute difference between the actual opening parameter and the target opening parameter, and by monitoring the duration, it is possible to accurately determine whether the valve body is stuck, thus improving the accuracy of stuck fault identification.

[0079] In this embodiment of the invention, when the valve body condition monitoring result indicates that the electronic valve body has a jamming fault, the method further includes: obtaining the standard motor operating current in the target standard parameters; in response to the target opening parameter being greater than the actual opening parameter and the motor operating current being greater than the first current, determining the jamming fault as a valve closing jamming fault, wherein the first current is used to represent the product of a first preset multiple and the standard motor operating current; in response to the target opening parameter being less than the actual opening parameter and the motor operating current being less than the second current, determining the jamming fault as a valve opening jamming fault, wherein the second current is used to represent the product of a second preset multiple and the standard motor operating current, and the second preset multiple is less than the first preset multiple.

[0080] The aforementioned standard motor operating current can refer to a pre-set threshold used to determine the magnitude of the motor operating current, which can be determined according to actual needs.

[0081] In one optional embodiment, the control unit can compare the target opening parameter with the actual opening parameter in real time, while simultaneously monitoring whether the motor operating current exceeds the standard range. A first preset multiple multiplied by the standard motor operating current yields a first current, used to determine if the valve is stuck closing; a second preset multiple multiplied by the standard motor operating current yields a second current, used to identify if the valve is stuck opening. The selection of the preset multiples can take into account the motor's load characteristics, the mechanical friction of the electronic expansion valve, and the influence of refrigerant flow on the motor, ensuring the accuracy of the current anomaly range. When the target opening parameter is greater than the actual opening parameter, and the motor operating current is greater than the first current, a valve stuck closing fault can be identified. When the target opening parameter is less than the actual opening parameter, and the motor operating current is less than the second current, a valve stuck opening fault can be identified. This logical judgment based on the direction of opening deviation and current anomaly can effectively distinguish the type of jamming, providing precise guidance for subsequent fault handling.

[0082] In the above process, by combining the target opening parameters, actual opening parameters, and motor operating current for comparative analysis, the two fault types of valve closure sticking and opening sticking can be precisely identified, avoiding improper maintenance caused by a general judgment of sticking faults. The setting of the first and second currents allows for accurate identification of abnormal changes in motor operating current, timely capture of the electrical characteristics of sticking faults, and improved accuracy and timeliness of fault diagnosis, helping to detect potential problems early and prevent fault escalation. More detailed fault type identification provides specific guidance for subsequent maintenance work. For example, valve closure sticking requires adjustment or replacement of internal valve body parts, while valve opening sticking involves checking the motor control circuit. This targeted maintenance strategy helps to quickly resolve problems, reduces maintenance costs and downtime, and improves maintenance efficiency.

[0083] In this embodiment of the invention, the method further includes: acquiring a first refrigerant pressure parameter, a second refrigerant pressure parameter, and a refrigerant temperature parameter from the refrigerant state parameters, and acquiring a standard pressure difference value and a standard refrigerant temperature from the target standard parameters; determining a pressure difference value between the first refrigerant pressure parameter and the second refrigerant pressure parameter; and determining that the valve body condition monitoring result indicates a blockage fault in the electronic valve body in response to a pressure difference value greater than the target pressure difference value and a refrigerant temperature parameter less than the standard refrigerant temperature, wherein the target pressure difference value is used to represent the product of a third preset multiple and the standard pressure difference value.

[0084] The aforementioned standard pressure difference can refer to a pre-set threshold used to determine the magnitude of the pressure difference, which can be determined according to actual needs.

[0085] The aforementioned standard refrigerant temperature can refer to a pre-set threshold used to determine the magnitude of the refrigerant temperature, which can be determined according to actual needs.

[0086] The aforementioned blockage fault can refer to a fault state in which the refrigerant flow is reduced due to internal or external reasons when the refrigerant flows through the electronic valve body, thereby creating an abnormal pressure difference across the valve body.

[0087] In one optional embodiment, when monitoring for blockage in the electronic valve body, the control unit can acquire real-time refrigerant status parameters from the sensor array, including a first refrigerant pressure parameter, a second refrigerant pressure parameter, and a refrigerant temperature parameter. Subsequently, the control unit can retrieve the corresponding standard pressure difference and standard refrigerant temperature based on the current air conditioning operating conditions for comparison with the real-time monitoring data. The control unit can determine the pressure difference between the first and second refrigerant pressure parameters. If the pressure difference is greater than the target pressure difference (i.e., the product of a third preset multiple and the standard pressure difference), and the refrigerant outlet temperature is lower than the standard refrigerant temperature, it can be determined that there is a blockage fault inside the electronic valve body, causing refrigerant flow obstruction, abnormally increased pressure difference, and the refrigerant's inability to reach the expected thermodynamic state, thus identifying it as a blockage fault.

[0088] In the aforementioned process, by combining the refrigerant pressure difference at the inlet and outlet ports of the electronic valve body with the refrigerant temperature at the outlet, this technical solution achieves multi-parameter cross-verification of blockage faults. Real-time monitoring and rapid calculation capabilities enable early warnings at the initial stage of blockage, preventing abnormal system pressure and decreased refrigerant circulation efficiency caused by worsening blockage, thereby reducing the risk of a sharp decline in air conditioning system performance. By setting standard pressure differences and standard refrigerant temperatures, and combining real-time monitoring of the first refrigerant pressure parameter, the second refrigerant pressure parameter, and refrigerant temperature parameter, accurate diagnosis of electronic valve body blockage faults can be achieved. This provides technical support for the maintenance and improvement of vehicle air conditioning systems, effectively ensuring stable system operation and passenger comfort.

[0089] The technical solution proposed in this application is described below with reference to an optional embodiment. This application proposes a monitoring system and method for electronic expansion valve sticking and blockage. It addresses the technical challenge of monitoring electronic expansion valve sticking and blockage faults in vehicle air conditioning systems. By innovatively adopting a multi-sensor fusion monitoring architecture, multi-dimensional parameters such as pressure, temperature, and motor current are collected at key nodes. Combined with intelligent algorithms, data cross-validation is achieved, providing a precise early warning scheme and effectively improving the efficiency and accuracy of fault identification.

[0090] This application provides a vehicle air conditioning system electronic expansion valve jamming / blockage monitoring system, comprising: a first pressure sensor, which can be installed on the refrigerant line at the inlet end of the electronic expansion valve to collect a first refrigerant pressure parameter (P1) at the inlet; a second pressure sensor, which can be installed on the refrigerant line at the outlet end of the electronic expansion valve to collect a second refrigerant pressure parameter (P2) at the outlet; a temperature sensor, which can be installed on the refrigerant line at the outlet end of the electronic expansion valve, adjacent to the second pressure sensor, to collect a refrigerant temperature parameter (T2) at the outlet; a current detection module, which can be connected to the drive motor controller of the electronic expansion valve to collect the motor operating current (I) of the drive motor, reflecting the motor load status; and a control unit, which can be a microprocessor chip, connected via a controller area network bus or hardwired connection, to receive the electronic expansion valve target opening parameter (K_target) sent by the air conditioning electronic control unit, and simultaneously receive signals from the aforementioned sensors. The control unit has built-in signal processing, data storage, and logical judgment functions, analyzes parameter changes through a preset algorithm, determines the fault type, and outputs an alarm signal. The alarm module may include an air conditioning malfunction indicator light and a buzzer on the dashboard, which will issue a visual or audible warning after receiving an alarm signal from the control unit.

[0091] This application also provides a monitoring method using the above system, comprising the following steps: In the data acquisition stage, the control unit collects the first refrigerant pressure parameter (P1), the second refrigerant pressure parameter (P2), the refrigerant temperature parameter (T2), the motor operating current (I), and the target opening parameter (K_target) in real time. The sampling frequency can be set to greater than 10Hz to ensure dynamic responsiveness. Data preprocessing involves filtering the acquired signals to remove high-frequency noise; temperature compensation adjusts the pressure sensor temperature drift and analog-to-digital conversion; and the pressure difference (ΔP) is calculated as: first refrigerant pressure parameter (P1) - second refrigerant pressure parameter (P2). Target standard parameter retrieval allows for the retrieval of corresponding standard parameters from the data storage module based on the current air conditioning operating conditions, such as cooling / heating mode, fan speed, and external ambient temperature. Standard parameters can be pre-calibrated through bench testing to cover different ambient temperatures and air conditioning load conditions. In the logic judgment stage, a jamming fault is identified when the deviation between the target opening and the actual feedback opening exceeds a threshold, the motor current is significantly higher, and the pressure difference (ΔP) deviates abnormally from the standard value. The valve opening and closing jams are distinguished based on the direction of the opening deviation. For blockage detection, a blockage fault can be identified when the pressure difference (ΔP) consistently exceeds the target pressure difference, the refrigerant temperature parameter (T2) is lower than the standard refrigerant temperature, and the motor current shows no normal fluctuation. Partial blockage and complete blockage can be differentiated by considering the rate of increase of the pressure difference (ΔP). Alarm output can trigger different alarm modes based on the fault level (minor, moderate, severe). For example, a minor fault will only have a constantly lit indicator light, while a more severe fault will have a flashing indicator light accompanied by a buzzer alarm, and simultaneously send a limiting command, such as reducing the compressor speed, to the air conditioning electronic control unit via the controller area network bus.

[0092] This application utilizes a multi-parameter fusion approach, combining pressure, temperature, and current data with thermodynamic characteristics and motor load status, significantly reducing the risk of misjudgment based on a single parameter and achieving high fault identification accuracy. Employing high-frequency sampling and rapid algorithm processing, the time from fault occurrence to alarm response is short, enabling early warning. By pre-setting standard databases for different operating conditions, it can adapt to the monitoring needs of different vehicle models and environmental conditions, exhibiting high versatility. It can promptly detect faults and limit system load, preventing secondary problems such as compressor damage caused by fault escalation and reducing maintenance costs.

[0093] After monitoring is initiated, the control unit initializes the sensors and communication interface, performs a self-test, and determines whether the sensors are properly connected. It then enters normal monitoring mode, collecting real-time data on the first refrigerant pressure parameter (P1), the second refrigerant pressure parameter (P2), the refrigerant temperature parameter (T2), the motor operating current (I), and the target opening parameter (K_target).

[0094] Calculate the pressure difference (ΔP) = first refrigerant pressure parameter (P1) - second refrigerant pressure parameter (P2), and consult the refrigerant property table based on the second refrigerant pressure parameter (P2) and refrigerant temperature parameter (T2) to determine if the outlet refrigerant is a gas-liquid two-phase system; it should normally be a gas-liquid two-phase system. Call the target standard parameters under the current operating condition. If the absolute difference between the actual opening parameter and the target opening parameter is greater than the preset absolute difference threshold, and the duration is greater than the standard duration, the valve condition monitoring result indicates a jamming fault in the electronic valve body. If the target opening parameter is greater than the actual opening parameter, and the motor operating current is greater than the first current, the jamming fault is determined to be a valve closing jamming fault; the first current represents the product of the first preset multiple and the standard motor operating current. If the target opening parameter is less than the actual opening parameter, and the motor operating current is less than the second current, the jamming fault is determined to be a valve opening jamming fault; the second current represents the product of the second preset multiple and the standard motor operating current; the second preset multiple is less than the first preset multiple. The system acquires the first refrigerant pressure parameter, the second refrigerant pressure parameter, and the refrigerant temperature parameter from the refrigerant status parameters, and acquires the standard pressure difference value and the standard refrigerant temperature from the target standard parameters. It determines the pressure difference between the first and second refrigerant pressure parameters. If the pressure difference value is greater than the target pressure difference value and the refrigerant temperature parameter is less than the standard refrigerant temperature, the system determines that the valve body condition monitoring result indicates a blockage fault in the electronic valve body. The target pressure difference value represents the product of a third preset multiple and the standard pressure difference value. After fault confirmation, the control unit can record the fault code, fault occurrence time, and related parameters, and trigger the alarm module. If the fault disappears for multiple consecutive sampling cycles, it can be determined as a temporary fault, the alarm is cleared, but the fault record is retained; if the fault persists, the alarm is maintained, and the air conditioning system output power is limited.

[0095] Figure 3 This is a schematic diagram of an optional vehicle electronic valve body monitoring process according to an embodiment of the present invention, such as... Figure 3As shown, the system obtains the air conditioning operating conditions of the air conditioning system; based on the air conditioning operating conditions, it calls the target standard parameters corresponding to the air conditioning operating conditions from the preset standard parameter set; in response to the absolute difference between the actual opening parameter and the target opening parameter of the electronic valve being greater than the preset absolute difference threshold and the duration being greater than the standard duration, it determines that the valve body condition monitoring result is that the electronic valve body has a jamming fault; in response to the target opening parameter being greater than the actual opening parameter and the motor operating current being greater than the first current, it determines that the jamming fault is a valve closing jamming fault; in response to the target opening parameter being less than the actual opening parameter and the motor operating current being less than the second current, it determines that the jamming fault is a valve opening jamming fault; it determines the pressure difference between the first refrigerant pressure parameter and the second refrigerant pressure parameter; in response to the pressure difference being greater than the target pressure difference and the refrigerant temperature parameter being less than the standard refrigerant temperature, it determines that the valve body condition monitoring result is that the electronic valve body has a blockage fault.

[0096] This application innovatively integrates the monitoring of multiple parameters, including inlet pressure, outlet pressure, outlet temperature, and motor current, and improves fault identification accuracy through cross-validation. Based on operating conditions such as air conditioning mode and ambient temperature, it utilizes a pre-set standard parameter library, enhancing the adaptability of fault diagnosis under different conditions. Differentiated judgment logic is designed for jamming and blockage, combining parameter change rate and duration to achieve accurate fault type identification. From sensor self-testing and real-time data acquisition to fault confirmation, tiered alarms, and system protection, a complete monitoring-to-response closed loop is formed, ensuring the effectiveness of early warning and fault control.

[0097] Embodiments of this application also provide an electronic device, including: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods in various embodiments of this application when it runs.

[0098] The aforementioned memory can refer to devices inside a computer used to store data and programs, including RAM, hard disks, etc. RAM can be used to temporarily store running programs and data, while hard disks can be used to store programs and data long-term. Memory enables the computer to read and write data and execute programs. The aforementioned processor is responsible for executing instructions in computer programs and performing data processing. It can also be responsible for controlling and executing various operations, including arithmetic operations, logical operations, and data transmission.

[0099] Embodiments of this application also provide a computer-readable storage medium including a stored executable program, wherein, when the executable program is running, it controls the device where the computer-readable storage medium is located to perform the methods of various embodiments of this application.

[0100] The aforementioned computer storage media can refer to the media used in computer memory to store certain discontinuous physical quantities. Computer storage media mainly include semiconductors, magnetic cores, magnetic drums, magnetic tapes, laser discs, etc. Computer-readable storage media include stored programs, which can be a set of instructions that a computer can recognize and execute, running on an electronic computer to meet certain information needs.

[0101] Embodiments of this application also provide a computer program product, including a computer program that, when executed by a processor, implements the methods of various embodiments of this application.

[0102] The aforementioned computer program products can refer to software programs that have been written, tested, and released, and can run on computers or other devices. Computer program products can include application programs, operating systems, utility software, etc., used to achieve specific functions or solve specific problems.

[0103] Embodiments of this application also provide a computer program product, including a non-volatile computer-readable storage medium for storing a computer program that, when executed by a processor, implements the methods in various embodiments of this application.

[0104] The aforementioned non-volatile computer-readable storage medium can refer to a medium for storing data. Non-volatile computer-readable storage media can retain data without loss when power is off and can be used to store long-term data, such as operating systems, applications, and user files. Non-volatile storage media can include hard disk drives, solid-state drives, optical disks, and flash memory storage devices, etc.

[0105] Embodiments of this application also provide a computer program that, when executed by a processor, implements the methods described in the various embodiments of this application.

[0106] The aforementioned computer program can refer to a set of instructions used to tell the computer to perform specific tasks or operations. Computer programs can be written by programmers using specific programming languages ​​and can include algorithms, data structures, logic, and control flow. Computer programs can be used for a variety of purposes, including application software, operating systems, etc.

[0107] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0108] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0109] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0110] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0111] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0112] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A monitoring system for a vehicle electronic valve body, characterized in that, An air conditioning system for vehicles, the air conditioning system comprising at least: a condenser and an evaporator, a refrigerant line connecting the condenser and the evaporator, refrigerant flowing in the refrigerant line, and an electronic valve body installed on the refrigerant line, the system comprising: An inlet / outlet sensor array is installed on the refrigerant pipeline at the inlet and / or outlet ends of the electronic valve body to acquire refrigerant state parameters at the inlet and / or outlet ends. A current detection module, wherein the detection end of the current detection module is connected to the drive motor, and is used to detect the motor operating current of the drive motor, wherein the drive motor is used to drive the electronic valve body to perform opening and closing actions; The control unit is connected to the inlet / outlet sensor array, the output terminal of the current detection module, and the target electronic control unit of the air conditioning system. It is used to obtain the valve body condition monitoring result of the electronic valve body based on the refrigerant state parameters, the motor operating current, and the target opening degree parameters provided by the target electronic control unit. The target electronic control unit is used to control the operating state of the air conditioning system, and the target opening degree parameters are used to characterize the valve body opening degree that the target electronic control unit expects the electronic valve body to achieve.

2. The vehicle electronic valve body monitoring system according to claim 1, characterized in that, The refrigerant state parameters include at least two of the following: a first refrigerant pressure parameter, a second refrigerant pressure parameter, and a refrigerant temperature parameter; the inlet / outlet sensor array includes at least two of the following: A first pressure sensor is installed on the refrigerant pipeline at the inlet end to obtain the first refrigerant pressure parameter at the inlet end. The second pressure sensor is installed on the refrigerant pipeline at the outlet end to obtain the second refrigerant pressure parameter at the outlet end. A temperature sensor is installed on the refrigerant pipeline at the outlet end to obtain the refrigerant temperature parameter at the outlet end.

3. The vehicle electronic valve body monitoring system according to claim 1 or 2, characterized in that, The system also includes: An alarm module, connected to the control unit, is used to issue alarms using different types of alarm methods based on different fault conditions of the electronic valve body.

4. A method for monitoring a vehicle electronic valve body, characterized in that, The monitoring system applied to the vehicle electronic valve body according to any one of claims 1 to 3 includes: The refrigerant state parameters at the inlet and / or outlet of the electronic valve body, the motor operating current of the drive motor, and the target opening parameter provided by the target electronic control unit of the air conditioning system are obtained. The drive motor is used to drive the electronic valve body to perform opening and closing actions, the target electronic control unit is used to control the operating state of the air conditioning system, and the target opening parameter is used to characterize the valve opening degree that the target electronic control unit expects the electronic valve body to achieve. Based on the refrigerant state parameters, the motor operating current, and the target opening parameters, the valve body condition monitoring results of the electronic valve body are obtained.

5. The monitoring method for vehicle electronic valve bodies according to claim 4, characterized in that, Based on the refrigerant state parameters, the motor operating current, and the target opening parameter, the valve body condition monitoring results of the electronic valve body are obtained, including: The air conditioning operating conditions of the air conditioning system are obtained, wherein the air conditioning operating conditions include at least one of the following: the air conditioning system operating mode and the environmental conditions in which the air conditioning system is located; Based on the air conditioning operating condition, the target standard parameter corresponding to the air conditioning operating condition is called from the preset standard parameter set; Based on the target standard parameters, the refrigerant state parameters, the motor operating current, and the target opening parameters, the valve body condition monitoring results are determined.

6. The monitoring method for a vehicle electronic valve body according to claim 5, characterized in that, The method further includes: Obtain the actual opening parameter of the electronic valve body, and the standard duration in the target standard parameter; If the absolute difference between the actual opening parameter and the target opening parameter is greater than a preset absolute difference threshold and the duration is greater than the standard duration, the valve body condition monitoring result is determined to be a jamming fault in the electronic valve body.

7. The monitoring method for a vehicle electronic valve body according to claim 6, characterized in that, If the valve body condition monitoring result indicates that the electronic valve body has a jamming fault, the method further includes: Obtain the standard motor operating current from the target standard parameters; In response to the target opening parameter being greater than the actual opening parameter and the motor operating current being greater than the first current, the jamming fault is determined to be a valve closing jamming fault, wherein the first current is used to represent the product of a first preset multiple and the standard motor operating current; In response to the target opening parameter being less than the actual opening parameter and the motor operating current being less than the second current, the jamming fault is determined to be a valve opening jamming fault, wherein the second current is used to represent the product of a second preset multiple and the standard motor operating current, and the second preset multiple is less than the first preset multiple.

8. The monitoring method for a vehicle electronic valve body according to claim 5, characterized in that, The method further includes: Obtain the first refrigerant pressure parameter, the second refrigerant pressure parameter, and the refrigerant temperature parameter from the refrigerant state parameters, and obtain the standard pressure difference value and the standard refrigerant temperature from the target standard parameters; Determine the pressure difference between the first refrigerant pressure parameter and the second refrigerant pressure parameter; In response to the pressure difference being greater than the target pressure difference and the refrigerant temperature parameter being less than the standard refrigerant temperature, the valve body condition monitoring result is determined to be a blockage fault in the electronic valve body, wherein the target pressure difference is used to represent the product of a third preset multiple and the standard pressure difference.

9. An electronic device, characterized in that, include: Memory, which stores executable programs; A processor for running the program, wherein the program, when running, performs the monitoring method for the vehicle electronic valve body according to any one of claims 4 to 8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored executable program, wherein, when the executable program is executed, it controls the device on which the storage medium is located to perform the monitoring method for the vehicle electronic valve body according to any one of claims 4 to 8.

11. A computer program product, characterized in that, The system includes computer instructions that, when executed by a processor, implement the vehicle electronic valve body monitoring method according to any one of claims 4 to 8.

Images