Smooth processing method, device and system for dynamic hysteresis of automobile fuel quantity display

Abstract

The invention relates to an automobile fuel quantity display dynamic hysteresis smoothing method, device and system, and belongs to the technical field of automobile electronics. The method comprises the steps that the latest sampling value of the current oil mass is calculated according to collected data of an oil mass sensor; based on the change relation between the newest sampling value and the current display value, whether the newest sampling value conforms to the current calibrated oil quantity change direction or not is judged; if yes, the display value is updated, if not, the display value is kept unchanged, and if the difference value does not exceed the dynamic hysteresis threshold value, the display value is updated, and the direction mark is reversed. The system correspondingly comprises a data calculation module, a dynamic hysteresis judgment module, a display gradual change processing module and the like. According to the method, the jumping phenomenon of the oil mass displayed at the critical point is effectively restrained through a dynamic hysteresis mechanism, the display stability and the system response speed are both considered, smooth transition is achieved when the oil mass suddenly changes, and the user experience and the display reliability are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of automotive electronics technology, specifically relating to a method, device, and system for dynamic hysteresis smoothing processing of automotive fuel level display. Background Technology

[0002] In the field of automotive fuel level display technology, to address the issue of display jumps caused by vehicle movement (such as acceleration, deceleration, turning, or going uphill / downhill), existing technologies typically employ multi-level filtering combined with fixed threshold updates. For example, multiple sampled values ​​are continuously collected, sorted, and filtered for extreme values ​​and mean values, then the displayed value is updated based on a fixed percentage threshold or time delay condition. However, this approach has significant drawbacks: fixed thresholds struggle to balance display stability and system response speed. Smaller thresholds easily trigger frequent jumps at fuel level thresholds, while larger thresholds lead to sluggish responses, failing to reflect real fuel level changes promptly. Although some improvements attempt to incorporate vehicle motion status for smoothing or operating condition correction, they have not effectively resolved the core contradiction between jumps and responsiveness, impacting the driver's judgment and the reliability of the display system. Summary of the Invention

[0003] This invention provides a method, apparatus, and system for dynamic hysteresis smoothing of vehicle fuel level display, which is particularly suitable for solving the problem of display jumps caused by sensor signal fluctuations in vehicle fuel level indication. Through intelligent trend judgment and dynamic hysteresis mechanism, it improves the system's response speed to real fuel level changes while ensuring display stability.

[0004] Firstly, a method for smoothing dynamic hysteresis in automotive fuel level displays is provided, comprising the following steps: The latest sampled value of the current oil quantity is calculated based on the collected oil quantity sensor data within the preset sampling period; Based on the change of the latest sampled value of the current fuel level relative to the current displayed value of the fuel level, determine whether it is consistent with the current calibrated direction of fuel level change; If they match, update the current fuel level display to the latest sampled value. If they do not match, and if the absolute value of the difference between the latest sampled value of the current fuel level and the displayed value of the current fuel level is less than or equal to the preset dynamic hysteresis threshold, then the displayed value of the current fuel level remains unchanged. If they do not match, and if the absolute value of the difference is greater than the dynamic hysteresis threshold, then update the current fuel level display value to the latest sampled value of the current fuel level, and change the calibrated direction of fuel level change.

[0005] In some embodiments, the step of calculating the latest sampled value of the current oil level based on the collected oil level sensor data includes: sorting the sampled values ​​output by multiple oil level sensors that are continuously collected, removing one or more of the highest and lowest extreme values, and calculating the average value of the remaining valid sampled values.

[0006] By continuously collecting multiple sample values ​​and sorting them to remove extreme values ​​and calculating the mean, this method effectively filters out abnormal data caused by sensor noise or transient interference during the data preprocessing stage, providing a highly reliable data foundation for subsequent dynamic hysteresis determination. This embodiment combines the advantages of amplitude limiting and mean filtering, significantly improving the quality and stability of input data without sacrificing real-time performance.

[0007] In some embodiments, determining whether the change in the latest sampled value of the current fuel level relative to the current displayed fuel level is consistent with the currently calibrated direction of fuel level change includes: when the currently calibrated direction of fuel level change is upward, if the latest sampled value of the current fuel level is greater than or equal to the current displayed fuel level, it is determined to be consistent; if the latest sampled value of the current fuel level is less than the current displayed fuel level, it is determined to be inconsistent; when the currently calibrated direction of fuel level change is downward, if the latest sampled value of the current fuel level is less than or equal to the current displayed fuel level, it is determined to be consistent; if the latest sampled value of the current fuel level is greater than the current displayed fuel level, it is determined to be inconsistent.

[0008] By explicitly defining the direction of oil volume change as "rising" or "falling" and setting trend consistency judgment rules under different directions, the system can accurately identify the true intention of oil volume change. This embodiment enables the system to not only focus on instantaneous numerical differences, but also to distinguish between effective oil volume changes and temporary disturbances at the trend level, further enhancing its adaptability to complex operating conditions such as fluid level sloshing during vehicle operation.

[0009] In some embodiments, if the difference is not consistent and the absolute value of the difference is greater than the dynamic hysteresis threshold, then updating the current fuel level display value to the latest sampled value of the current fuel level includes: gradually adjusting the current fuel level display value to the latest sampled value of the current fuel level according to a preset gradual change rate.

[0010] When a substantial change in fuel level is detected and triggers a display update, the system introduces a gradual rate of change control mechanism to smoothly and progressively adjust the displayed value to the target value. This embodiment effectively avoids abrupt jumps in the displayed value caused by large changes in fuel level, significantly reducing the visual impact and risk of misjudgment on the driver, and further optimizing the human-machine interaction experience.

[0011] In some embodiments, before the step of calculating the latest sampled value of the current fuel level based on the collected fuel level sensor data, the method further includes: initializing the current fuel level display value and the direction of fuel level change.

[0012] By initializing the displayed values ​​and direction of change during system startup or reset, the consistency and controllability of the starting point for logical judgments are ensured. This embodiment provides a stable initial state for the entire dynamic hysteresis smoothing process, preventing display anomalies caused by state uncertainty, and ensuring that the system can reliably start and continuously operate stably under various operating scenarios.

[0013] Secondly, a dynamic hysteresis smoothing control device for automobile fuel level display is provided, comprising: The data calculation module is used to calculate the latest sampled value of the current oil quantity based on the collected oil quantity sensor data within a preset sampling period; The dynamic hysteresis determination module is used to determine whether the change of the latest sampled value of the current fuel level relative to the current displayed fuel level is consistent with the currently calibrated direction of fuel level change. If consistent, the current displayed fuel level is updated to the latest sampled value of the current fuel level. If inconsistent, and if the absolute value of the difference between the latest sampled value of the current fuel level and the current displayed fuel level is less than or equal to a preset dynamic hysteresis threshold, the current displayed fuel level remains unchanged. If inconsistent, and if the absolute value of the difference is greater than the dynamic hysteresis threshold, the current displayed fuel level is updated to the latest sampled value of the current fuel level, and the calibrated direction of fuel level change is changed.

[0014] In some embodiments, the system further includes an initialization module for initializing the current fuel level display value and the direction of fuel level change.

[0015] In some embodiments, the system further includes a display gradual change processing module, used to gradually adjust the current oil quantity display value to the latest sampled value of the current oil quantity according to a preset gradual change rate.

[0016] Thirdly, a dynamic hysteresis smoothing system for automobile fuel level display is provided, comprising: a dynamic hysteresis smoothing control device for automobile fuel level display, wherein the dynamic hysteresis smoothing control device for automobile fuel level display is used to perform the method described above.

[0017] Fourthly, a vehicle is provided, including the aforementioned vehicle fuel level display dynamic hysteresis smoothing control device.

[0018] The beneficial effects of the technical solution provided by this invention include: 1. Effectively suppress critical point jumps and improve display stability: By introducing a dynamic hysteresis judgment mechanism, the system can intelligently distinguish between real oil quantity changes and disturbance fluctuations, and only update the displayed value and direction indicator when the reverse trend change exceeds the dynamic hysteresis threshold, thereby significantly reducing the frequent jump phenomenon near the critical point of oil quantity percentage.

[0019] 2. Balancing system response speed and smoothness: While maintaining a consistent trend direction, the displayed value is allowed to follow the actual changes in real time, ensuring the system responds quickly to changes in actual fuel quantity; at the same time, when a trend reversal or a sharp change is detected, the display gradual change processing module smoothly transitions at a preset rate to avoid step changes in the displayed value from interfering with the driver.

[0020] 3. Enhance user experience and system reliability: By combining data preprocessing and dynamic hysteresis logic, the system can provide a stable, smooth and accurate fuel level display under various vehicle operating conditions, enhancing the driver's confidence in judging the fuel level and improving the overall intelligence level and user experience of the automotive electronic system. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a flowchart illustrating the method steps of the dynamic hysteresis smoothing processing method for displaying automobile fuel level provided in an embodiment of the present invention. Figure 2 A system flowchart of the dynamic hysteresis smoothing processing method for automobile fuel level display provided in an embodiment of the present invention; Figure 3 A control strategy diagram for the dynamic hysteresis smoothing processing method for automobile fuel level display provided in an embodiment of the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Firstly, such as Figure 1 As shown, this embodiment of the invention provides a method for dynamic hysteresis smoothing of automobile fuel level display, including the following steps: The latest sampled value of the current oil quantity is calculated based on the collected oil quantity sensor data within the preset sampling period; Based on the change of the latest sampled value of the current fuel level relative to the current displayed value of the fuel level, determine whether it is consistent with the current calibrated direction of fuel level change; If they match, update the current fuel level display to the latest sampled value. If they do not match, and if the absolute value of the difference between the latest sampled value of the current fuel level and the displayed value of the current fuel level is less than or equal to the preset dynamic hysteresis threshold, then the displayed value of the current fuel level remains unchanged. If they do not match, and if the absolute value of the difference is greater than the dynamic hysteresis threshold, then update the current fuel level display value to the latest sampled value of the current fuel level, and change the calibrated direction of fuel level change.

[0025] The current fuel level displayed value is the actual percentage of fuel level shown on the vehicle's instrument panel. The direction of fuel level change represents the fuel level change trend determined by the system, including two states: "increasing" and "decreasing". The latest sampled value of the current fuel level represents the current percentage of fuel level obtained after pre-processing by the system. The dynamic hysteresis threshold can be adjusted according to the specific vehicle model and the specific characteristics of the fuel level sensor, for example, it can be set to 5%. The dynamic hysteresis threshold is used to characterize the judgment parameter that triggers a change in the direction of fuel level change and a forced update of the current fuel level displayed value.

[0026] In some embodiments, the step of calculating the latest sampled value of the current oil level based on the collected oil level sensor data includes: sorting the sampled values ​​output by multiple oil level sensors that are continuously collected, removing one or more of the highest and lowest extreme values, and calculating the average value of the remaining valid sampled values.

[0027] First, AD sampling values ​​from 16 fuel level sensors are continuously collected at a specific sampling period. Then, the collected numerical sequences are sorted, and the two highest and two lowest extreme values ​​are removed to eliminate obvious spike pulse interference. Finally, the arithmetic mean of the remaining 12 valid sampling values ​​is calculated to obtain the latest sampled value of the current fuel level after smoothing.

[0028] By continuously collecting multiple sample values ​​and sorting them to remove extreme values ​​and calculating the mean, this method effectively filters out abnormal data caused by sensor noise or transient interference during the data preprocessing stage, providing a highly reliable data foundation for subsequent dynamic hysteresis determination. This embodiment combines the advantages of amplitude limiting and mean filtering, significantly improving the quality and stability of input data without sacrificing real-time performance.

[0029] In some embodiments, determining whether the change in the latest sampled value of the current fuel level relative to the current displayed fuel level is consistent with the currently calibrated direction of fuel level change includes: when the currently calibrated direction of fuel level change is upward, if the latest sampled value of the current fuel level is greater than or equal to the current displayed fuel level, it is determined to be consistent; if the latest sampled value of the current fuel level is less than the current displayed fuel level, it is determined to be inconsistent; when the currently calibrated direction of fuel level change is downward, if the latest sampled value of the current fuel level is less than or equal to the current displayed fuel level, it is determined to be consistent; if the latest sampled value of the current fuel level is greater than the current displayed fuel level, it is determined to be inconsistent.

[0030] By explicitly defining the direction of oil volume change as "rising" or "falling" and setting trend consistency judgment rules under different directions, the system can accurately identify the true intention of oil volume change. This embodiment enables the system to not only focus on instantaneous numerical differences, but also to distinguish between effective oil volume changes and temporary disturbances at the trend level, further enhancing its adaptability to complex operating conditions such as fluid level sloshing during vehicle operation.

[0031] In some embodiments, if the difference is not consistent and the absolute value of the difference is greater than the dynamic hysteresis threshold, then updating the current fuel level display value to the latest sampled value of the current fuel level includes: gradually adjusting the current fuel level display value to the latest sampled value of the current fuel level according to a preset gradual change rate.

[0032] When a substantial change in fuel level is detected and triggers a display update, the system introduces a gradual rate of change control mechanism to smoothly and progressively adjust the displayed value to the target value. This embodiment effectively avoids abrupt jumps in the displayed value caused by large changes in fuel level, significantly reducing the visual impact and risk of misjudgment on the driver, and further optimizing the human-machine interaction experience.

[0033] In some embodiments, before the step of calculating the latest sampled value of the current fuel level based on the collected fuel level sensor data, the method further includes: initializing the current fuel level display value and the direction of fuel level change. Preferably, the initial state of the system is that the current fuel level display value is 0%, and the direction of fuel level change is upward.

[0034] By initializing the displayed values ​​and direction of change during system startup or reset, the consistency and controllability of the starting point for logical judgments are ensured. This embodiment provides a stable initial state for the entire dynamic hysteresis smoothing process, preventing display anomalies caused by state uncertainty, and ensuring that the system can reliably start and continuously operate stably under various operating scenarios.

[0035] like Figure 3 As shown in the figure, this embodiment of the invention provides a control strategy diagram for a dynamic hysteresis smoothing method for displaying automobile fuel level.

[0036] Specifically, the system intelligently switches between states based on the comparison between the current oil quantity change direction indicator (upward or downward) and the latest sampled value. When the direction indicator is upward, if the latest sampled value is greater than or equal to the current displayed value, the system maintains the upward state and updates the displayed value; if the latest sampled value is less than the displayed value, the system makes a judgment based on the comparison between the difference and the dynamic hysteresis threshold: if the difference does not exceed the threshold, the upward state and the displayed value remain unchanged; if the difference exceeds the threshold, the system switches to the downward state and updates the displayed value.

[0037] Similarly, in the decreasing state, if the latest sampled value is less than or equal to the displayed value, the system maintains the decreasing state and updates the displayed value; if the latest sampled value is greater than the displayed value, the system determines whether to switch to the increasing state by comparing the difference with a threshold. This control strategy achieves intelligent tracking of the oil quantity display trend and efficient suppression of disturbance fluctuations through conditional transitions between states, ensuring stable operation and rapid response of the system under different operating conditions.

[0038] Secondly, embodiments of the present invention provide a dynamic hysteresis smoothing control device for displaying automobile fuel level, comprising: The data calculation module is used to calculate the latest sampled value of the current oil quantity based on the collected oil quantity sensor data within a preset sampling period; The dynamic hysteresis determination module is used to determine whether the change of the latest sampled value of the current fuel level relative to the current displayed fuel level is consistent with the currently calibrated direction of fuel level change. If consistent, the current displayed fuel level is updated to the latest sampled value of the current fuel level. If inconsistent, and if the absolute value of the difference between the latest sampled value of the current fuel level and the current displayed fuel level is less than or equal to a preset dynamic hysteresis threshold, the current displayed fuel level remains unchanged. If inconsistent, and if the absolute value of the difference is greater than the dynamic hysteresis threshold, the current displayed fuel level is updated to the latest sampled value of the current fuel level, and the calibrated direction of fuel level change is changed.

[0039] In some embodiments, the system further includes an initialization module for initializing the current fuel level display value and the direction of fuel level change.

[0040] In some embodiments, the system further includes a gradual adjustment module for adjusting the displayed current fuel level to the latest sampled value of the current fuel level according to a preset gradual adjustment rate. Preferably, the gradual adjustment rate is preset to 1% every 2 seconds.

[0041] Thirdly, embodiments of the present invention provide a dynamic hysteresis smoothing system for automobile fuel level display, comprising: a dynamic hysteresis smoothing control device for automobile fuel level display, wherein the dynamic hysteresis smoothing control device for automobile fuel level display is used to execute the method described above.

[0042] like Figure 2 As shown, this embodiment of the invention provides a system flowchart for a dynamic hysteresis smoothing method for displaying automobile fuel level.

[0043] Specifically, after the system starts up, it first initializes, sets the display value to the initial state, and determines the direction of oil quantity change. Then it enters the data acquisition and preprocessing stage, continuously acquiring sampled values ​​from multiple oil quantity sensors, sorting them, removing extreme values, and calculating the average of the valid sampled values ​​to obtain the latest sampled value of the current oil quantity.

[0044] Next, the system enters the dynamic hysteresis determination module. It compares the latest sampled value with the current displayed value to determine if the change aligns with the currently calibrated direction of fuel quantity change. If the direction matches, the displayed value is directly updated to the latest sampled value. If the direction does not match, the absolute value of the difference is further calculated and compared with a preset dynamic hysteresis threshold. If the difference does not exceed the threshold, the displayed value remains unchanged; if the difference exceeds the threshold, the displayed value is updated, and the fuel quantity change direction indicator is changed.

[0045] During the display value update process, if a significant abrupt change is detected in the displayed value, the system will enter a gradual adjustment phase. Based on a preset rate of adjustment, the displayed value will be gradually adjusted to the target value, and finally, the smoothed fuel level information will be output to the instrument display. This entire process is executed cyclically, achieving dynamic, smooth, and stable control of the fuel level display.

[0046] Fourthly, embodiments of the present invention provide a vehicle including the aforementioned vehicle fuel level display dynamic hysteresis smoothing control device.

[0047] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0048] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0049] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for smoothing dynamic hysteresis in automobile fuel level display, characterized in that, Includes the following steps: The latest sampled value of the current oil quantity is calculated based on the collected oil quantity sensor data within the preset sampling period; Based on the change of the latest sampled value of the current fuel level relative to the current displayed value of the fuel level, determine whether it is consistent with the current calibrated direction of fuel level change; If they match, update the current fuel level display to the latest sampled value. If they do not match, and if the absolute value of the difference between the latest sampled value of the current fuel level and the displayed value of the current fuel level is less than or equal to the preset dynamic hysteresis threshold, then the displayed value of the current fuel level remains unchanged. If they do not match, and if the absolute value of the difference is greater than the dynamic hysteresis threshold, then update the current fuel level display value to the latest sampled value of the current fuel level, and change the calibrated direction of fuel level change.

2. The method according to claim 1, characterized in that, The step of calculating the latest sampled value of the current fuel level based on the collected fuel level sensor data includes: The sampled values ​​from multiple continuously acquired oil level sensors are sorted, and the highest and lowest one or more extreme values ​​are removed. The average value of the remaining valid sampled values ​​is then calculated.

3. The method according to claim 1, characterized in that, The step of determining whether the change in the latest sampled value of the current fuel level relative to the current displayed fuel level is consistent with the direction of change of the currently calibrated fuel level includes: When the current calibrated fuel level change direction is upward, if the latest sampled value of the current fuel level is greater than or equal to the current fuel level display value, it is judged as consistent; if the latest sampled value of the current fuel level is less than the current fuel level display value, it is judged as inconsistent. When the current calibrated fuel level changes in a decreasing direction, if the latest sampled value of the current fuel level is less than or equal to the current fuel level displayed value, it is determined to be consistent; if the latest sampled value of the current fuel level is greater than the current fuel level displayed value, it is determined to be inconsistent.

4. The method according to any one of claims 1-3, characterized in that, If the values ​​do not match, and if the absolute value of the difference is greater than the dynamic hysteresis threshold, then the current fuel level display value is updated to the latest sampled value of the current fuel level, including: The current fuel level display value is gradually adjusted to the latest sampled value of the current fuel level according to a preset gradual change rate.

5. The method according to claim 1, characterized in that, Before the step of calculating the latest sampled value of the current fuel level based on the collected fuel level sensor data, the method further includes: Initialize the current fuel level display value and the direction of fuel level change.

6. A dynamic hysteresis smoothing control device for displaying automobile fuel level, characterized in that, include: The data calculation module is used to calculate the latest sampled value of the current oil quantity based on the collected oil quantity sensor data within a preset sampling period; The dynamic hysteresis determination module is used to determine whether the change of the latest sampled value of the current fuel quantity relative to the current displayed value of the fuel quantity is consistent with the current calibrated direction of fuel quantity change; if it is consistent, the current displayed value of the fuel quantity is updated to the latest sampled value of the current fuel quantity. If they do not match, and if the absolute value of the difference between the latest sampled value of the current fuel level and the current displayed fuel level is less than or equal to a preset dynamic hysteresis threshold, then the current displayed fuel level remains unchanged; if they do not match, and if the absolute value of the difference is greater than the dynamic hysteresis threshold, then the current displayed fuel level is updated to the latest sampled value of the current fuel level, and the calibrated direction of fuel level change is changed.

7. The control device according to claim 6, characterized in that, Also includes: The initialization module is used to initialize the current fuel level display value and the direction of fuel level change.

8. The control device according to claim 6 or 7, characterized in that, Also includes: The display gradual change processing module is used to gradually adjust the current oil quantity display value to the latest sampled value of the current oil quantity according to a preset gradual change rate.

9. A dynamic hysteresis smoothing system for automobile fuel level display, characterized in that, include: A vehicle fuel level display dynamic hysteresis smoothing control device, the vehicle fuel level display dynamic hysteresis smoothing control device being used to perform the method as described in any one of claims 1 to 5.

10. A vehicle, characterized in that, Includes the vehicle fuel level display dynamic hysteresis smoothing control device as described in any one of claims 6-8.

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