A wheel speed pulse signal identification method, device, equipment and storage medium

Abstract

The application provides a wheel speed pulse signal identification method, device and equipment and a storage medium, and relates to the technical field of vehicles. The method comprises generating a wheel speed pulse signal of a vehicle according to a signal collection interface, and acquiring an effective signal period, wherein the signal collection interface generates the wheel speed pulse signal according to a wheel speed original signal collected by a wheel speed sensor; setting a signal sampling window of a next wheel speed pulse signal according to the effective signal period and a vehicle speed change value, the signal sampling window being used for sampling continuous part rising edges and part falling edges of the wheel speed pulse signal; sampling through the signal sampling window to acquire a target pulse signal, and acquiring a wheel speed of the vehicle according to a target signal period corresponding to the target pulse signal. The method of the application solves the problem that the prior art is still deficient in accurately and efficiently identifying the wheel speed of a vehicle.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of automobiles, and particularly relates to a wheel speed pulse signal identification method, device, equipment and storage medium. BACKGROUND

[0002] In a modern automobile electronic control system, wheel speed signals are widely used in an antilock brake system ABS (Antilock Brake System), an electronic stability program ESP (Electronic Stability Program), an automatic transmission control system and an instrument control module.

[0003] Due to signal noise, external electromagnetic interference and wheel slip, a wheel speed signal collected by a wheel speed sensor will have a large error, which will affect the accuracy of wheel speed calculation, and thus accurate identification of a vehicle wheel speed signal is required.

[0004] The prior art still has some deficiencies in how to accurately and efficiently identify a vehicle wheel speed. SUMMARY

[0005] The present application provides a wheel speed pulse signal identification method, device, equipment and storage medium to solve the problem that the prior art still has some deficiencies in how to accurately and efficiently identify a vehicle wheel speed.

[0006] In a first aspect, the present application provides a wheel speed pulse signal identification method, comprising:

[0007] According to a wheel speed pulse signal of a vehicle generated by a signal collection interface, an effective signal period is obtained, wherein the signal collection interface generates the wheel speed pulse signal according to a wheel speed original signal collected by a wheel speed sensor;

[0008] According to the effective signal period and a vehicle speed change value, a signal sampling window of a next wheel speed pulse signal is set, and the signal sampling window is used to sample continuous part rising edges and part falling edges of the wheel speed pulse signal;

[0009] Sampling is performed through the signal sampling window to obtain a target pulse signal, and a wheel speed of the vehicle is obtained according to a target signal period corresponding to the target pulse signal.

[0010] In a possible design, the wheel speed pulse signal of the vehicle generated by the signal collection interface is used to obtain the effective signal period, comprising:

[0011] The wheel speed pulse signal of the vehicle generated by the signal collection interface is used to obtain signal periods of three continuous wheel speed pulse signals;

[0012] The difference of the signal periods of any two wheel speed pulse signals is obtained, if the obtained difference is less than a preset difference, the average signal period of the three wheel speed pulse signals is obtained by averaging the signal periods of the three wheel speed pulse signals;

[0013] The average signal period is used as the effective signal period.

[0014] In a possible design, the setting of the signal sampling window of the next wheel speed pulse signal according to the effective signal period and a vehicle speed change value comprises:

[0015] The estimated signal period is obtained according to the effective signal period and the vehicle speed change value.

[0016] The start and end times of the signal sampling window are determined according to the estimated signal period, so that the signal sampling window collects continuous partial rising edges and partial falling edges corresponding to the rising inflection point or the falling inflection point.

[0017] In a possible design, if the vehicle speed change value indicates that the vehicle speed increases, the estimated signal period is less than the effective signal period.

[0018] If the vehicle speed change value indicates that the vehicle speed decreases, the estimated signal period is greater than the effective signal period.

[0019] In a possible design, the signal sampling window is two, wherein the first signal sampling window is used to collect partial falling edges and partial rising edges corresponding to the rising inflection point, and the second signal sampling window is used to collect partial rising edges and partial falling edges corresponding to the falling inflection point.

[0020] In a possible design, the sampling through the signal sampling window to obtain the target pulse signal comprises:

[0021] After the rising edge is sampled through the first sampling window, the rising edge is extended to the start time of the second sampling window after the sampling of the first sampling window ends.

[0022] After the falling edge is sampled through the second sampling window, the falling edge is extended to the start time of the next sampling window after the sampling of the second sampling window ends.

[0023] In a possible design, after the wheel speed of the vehicle is obtained according to the target signal period corresponding to the target pulse signal in one effective signal period, the method further comprises:

[0024] The signal sampling window of the next wheel speed pulse signal is continuously set according to the target signal period and a new vehicle speed change value, so as to continuously obtain the wheel speed of the vehicle.

[0025] In a second aspect, the present application provides a wheel speed pulse signal recognition device, comprising:

[0026] an acquisition module configured to acquire an effective signal period according to a wheel speed pulse signal of a vehicle generated by a signal acquisition interface, wherein the signal acquisition interface is configured to generate the wheel speed pulse signal according to a wheel speed original signal collected by a wheel speed sensor;

[0027] a sampling module configured to set a signal sampling window of a next wheel speed pulse signal according to the effective signal period and a vehicle speed change value, and the signal sampling window is configured to sample continuous partial rising edges and partial falling edges of the wheel speed pulse signal;

[0028] a processing module configured to sample the signal sampling window to acquire a target pulse signal, and acquire a wheel speed of the vehicle according to a target signal period corresponding to the target pulse signal.

[0029] In a third aspect, the present application provides a wheel speed pulse signal recognition electronic device, comprising a processor and a memory in communication connection with the processor;

[0030] the memory stores computer execution instructions;

[0031] the processor executes the computer execution instructions stored in the memory to implement a wheel speed pulse signal recognition method.

[0032] In a fourth aspect, the present application provides a computer readable storage medium, wherein the computer readable storage medium stores computer execution instructions, and the computer execution instructions are executed by a processor to implement a wheel speed pulse signal recognition method.

[0033] The wheel speed pulse signal recognition method provided in the embodiment acquires an effective signal period according to a wheel speed pulse signal of a vehicle generated by a signal acquisition interface, sets a signal sampling window of a next wheel speed pulse signal according to the effective signal period and a vehicle speed change value, and the signal sampling window is configured to sample continuous partial rising edges and partial falling edges of the wheel speed pulse signal; the signal sampling window is sampled to acquire a target pulse signal, and a wheel speed of the vehicle is acquired according to a target signal period corresponding to the target pulse signal. The signal sampling window provided in the embodiment only acquires wheel speed pulse signals in a time window, and does not acquire wheel speed pulse signals outside the time window, such as error signals or interference signals, etc. The wheel speed signal is realized high-speed real-time sampling and processing, error signals caused by signal noise, external electromagnetic interference and wheel slip, etc. can be effectively processed, so that accurate recognition and processing of the wheel speed signal is realized, and the accuracy of the vehicle speed calculation value is improved. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without creative effort based on these drawings belong to the protection scope of the present application.

[0035] Figure 1 The system architecture diagram of the wheel speed pulse signal recognition method provided for the embodiments of the present application is shown in the figure.

[0036] Figure 2 The flowchart of the wheel speed pulse signal recognition method provided for the embodiments of the present application is shown in the figure. Figure 1

[0037] Figure 3 The flowchart of the wheel speed pulse signal recognition method provided for the embodiments of the present application is shown in the figure. Figure 2

[0038] Figure 4 The sampling diagram of the wheel speed pulse signal recognition method provided for the embodiments of the present application is shown in the figure.

[0039] Figure 5 The structural diagram of the wheel speed pulse signal recognition device provided for the embodiments of the present application is shown in the figure.

[0040] Figure 6 The structural diagram of the wheel speed pulse signal recognition electronic device provided for the embodiments of the present application is shown in the figure. DETAILED DESCRIPTION

[0041] The exemplary embodiments will be described in detail herein with reference to the drawings. Unless otherwise specified, the same numbers in different drawings indicate the same or similar elements. The embodiments described in the following exemplary embodiments are not representative of all embodiments consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application, as detailed in the appended claims, but not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0042] The terms "first", "second", "third", "fourth" and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0043] ​​Firstly, the related concepts or terms involved in the present application are explained:

[0044] Antilock brake system (ABS): the role is to automatically control the size of the brake force when the vehicle brakes, so that the wheels are not locked and are in a state of rolling and sliding, so as to ensure that the adhesion between the wheels and the ground is at the maximum.

[0045] Electronic stability program (ESP): a general term for systems or programs used to improve the handling performance of vehicles while effectively preventing vehicles from losing control when reaching their dynamic limits. Electronic stability program can improve the safety and handling of vehicles.

[0046] Magnetic wheel speed sensor: a commonly used wheel speed sensor designed using electromagnetic induction principles, with simple structure, low cost, and resistance to dirt, widely used in modern car antilock braking systems.

[0047] With the continuous development of technology in the automotive field, the performance of the vehicle is also improving, so users have increasingly high requirements for the control of the vehicle, and obtaining the speed of the vehicle through the wheel speed is a common technical means. How to accurately identify and process the wheel speed signal of the vehicle is particularly important for modern vehicle control.

[0048] Due to signal noise, external electromagnetic interference, and wheel slip, the wheel speed signal collected by the wheel speed sensor will have a large error, which will affect the accuracy of the wheel speed calculation, so a more accurate and efficient solution is needed to identify and process the wheel speed signal of the vehicle.

[0049] The present application provides a wheel speed pulse signal identification method, which predicts the signal sampling window of the next wheel speed pulse signal through the normal wheel speed pulse signal and the vehicle speed change value on the wheel speed pulse signal generated by the signal collector, and collects the wheel speed pulse signal through the signal sampling window. The signal sampling window is used to sample the continuous rising edge and partial falling edge of the wheel speed pulse signal, thereby excluding the influence of the error interference signal existing before the rising edge and after the falling edge in the wheel speed pulse signal, so that the wheel speed pulse signal identification method provided by the present application can accurately and efficiently identify the wheel speed of the vehicle.

[0050] Figure 1 The system architecture diagram of the wheel speed pulse signal identification provided by the embodiment of the present application is shown in Figure 1 As shown, the system includes a wheel speed sensor 101, a signal acquisition interface 102, and a single-chip microcomputer system 103, and the single-chip microcomputer system 103 is provided with an enhanced time processing unit eTPU module 104.

[0051] The wheel speed sensor 101 is used to acquire a wheel speed original signal of a vehicle and transmit the acquired wheel speed original signal to the signal collection interface 102, the signal collection interface 102 is connected with the single-chip microcomputer system 103, the signal collection interface 102 is used to convert the wheel speed original signal transmitted by the wheel speed sensor 101 into a wheel speed pulse signal and transmit the wheel speed pulse signal to the enhanced time processing unit eTPU module 104 in the single-chip microcomputer system 103 for real-time processing, so as to realize the identification processing of the wheel speed original signal.

[0052] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below by using specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described again in some embodiments. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0053] Example 1

[0054] Figure 2 The wheel speed pulse signal identification method flowchart provided by the embodiments of the present application Figure 1 As shown in Figure 2 , the execution subject of the present embodiment can be, for example, the enhanced time processing unit eTPU module 104 in Figure 1 , and the method comprises the following steps:

[0055] S201, acquiring an effective signal period according to a wheel speed pulse signal of a vehicle generated by a signal collection interface, the signal collection interface being used to generate the wheel speed pulse signal according to a wheel speed original signal collected by a wheel speed sensor;

[0056] The wheel speed original signal acquired by the wheel speed sensor may have possible error interference signals due to signal noise, external electromagnetic interference and wheel slip, etc., and the wheel speed original signal transmitted by the wheel speed sensor is converted into a wheel speed pulse signal by the signal collection interface, so the wheel speed pulse signal generated by the signal collection interface still has possible error interference signals;

[0057] For processing the possible error interference signals, first, an effective signal period needs to be acquired according to the wheel speed pulse signal, and only a normal wheel speed pulse signal can be used as the effective signal period. To acquire the normal wheel speed pulse signal, multiple sampling confirmations need to be performed on the wheel speed pulse signal, and after the preset condition is met, the wheel speed pulse signal is confirmed as the normal wheel speed pulse signal, i.e., the effective signal period.

[0058] Specifically, a section of wheel speed pulse signal needs to be judged, and continuous multiple sampling confirmations are performed in the section of wheel speed pulse signal, for example, three sampling confirmations are performed, if the continuous three sampling confirmation results meet the preset condition, the section of wheel speed pulse signal is confirmed as a normal wheel speed signal, that is, an effective signal period; if the preset condition is not met, it is judged that the section of wheel speed pulse signal has a possible error interference signal, and it is not considered as a normal wheel speed signal, and another section of wheel speed pulse signal is resampled and confirmed until a normal wheel speed signal, that is, an effective signal period, is obtained.

[0059] S202, according to the effective signal period and the vehicle speed change value, a signal sampling window of the next wheel speed pulse signal is set, and the signal sampling window is used for sampling the continuous partial rising edge and partial falling edge of the wheel speed pulse signal;

[0060] The vehicle speed change value refers to a value of the approximate vehicle speed change per unit time obtained by a sensor, and the fluctuation of the vehicle speed change value within a normal range is predictable.

[0061] The signal sampling window refers to a time window for sampling, and therefore the signal sampling window has a certain time length, so that the continuous partial rising edge and partial falling edge of the wheel speed pulse signal can be collected, and only the wheel speed pulse signal within the time window can be collected, and the wheel speed pulse signal outside the time window is not collected, which improves the possibility of collecting the target pulse signal by the signal sampling window and reduces the probability of collecting error interference signals.

[0062] Specifically, according to the signal sampling window predicted by the effective signal period and the vehicle speed change value, the effective rising edge and the effective falling edge inflection point can be collected when the signal is collected.

[0063] Based on the effective signal period and the vehicle speed change value, the current estimated signal period is obtained, and the current signal sampling window is set, when the effective signal period and the vehicle speed change value in the wheel speed pulse signal change, the estimated signal period is adjusted, and the next signal sampling window is reset;

[0064] Specifically, after the effective signal period and the vehicle speed change value are obtained based on a section of normal wheel speed pulse signal, the estimated signal period is obtained, and the signal sampling window with a certain time length is set according to the current estimated signal period, when the normal wheel speed pulse signal changes, the effective signal period and the vehicle speed change value also change, and the next estimated signal period is obtained again, and the next signal sampling window is also set according to the next estimated signal period.

[0065] S203, sampling is performed through the signal sampling window to obtain a target pulse signal, and the wheel speed of the vehicle is obtained according to a target signal period corresponding to the target pulse signal.

[0066] Wherein, after setting the signal sampling window according to the estimated signal period, when the normal change rising edge or the normal change falling edge in a signal period of the wheel speed pulse signal enters the signal sampling window with a certain time length, the signal sampling window collects and acquires the target pulse signal;

[0067] When the normal change rising edge or the normal change falling edge in a signal period is collected, the signal sampling window is closed and no longer collects other change rising edges or change falling edges until the next signal period is entered;

[0068] Specifically, through the continuously adjusted signal sampling window, the target pulse signal is collected in the wheel speed pulse signal, and the target signal period corresponding to the target pulse signal is processed to acquire the accurate wheel speed of the vehicle.

[0069] The wheel speed pulse signal recognition method provided in the embodiment acquires an effective signal period from the wheel speed pulse signal of the vehicle generated by a signal collection interface, sets a signal sampling window of the next wheel speed pulse signal according to the effective signal period and a vehicle speed change value, and the signal sampling window is used to sample continuous partial rising edges and partial falling edges of the wheel speed pulse signal. The signal sampling window is used for sampling to acquire a target pulse signal, and the wheel speed of the vehicle is acquired according to a target signal period corresponding to the target pulse signal. The signal sampling window provided in the embodiment only collects the wheel speed pulse signal in the time window and does not collect the wheel speed pulse signal outside the time window, such as error or interference signals, and realizes high-speed real-time sampling and processing of the wheel speed signal. The error signals caused by signal noise, external electromagnetic interference and wheel slip can be effectively processed, so that accurate recognition and processing of the wheel speed signal are realized, and the accuracy of the vehicle speed calculation value is improved.

[0070] Example 2

[0071] Figure 3 Flowchart of the wheel speed pulse signal recognition method provided in the embodiment Figure 2 . Figure 4 The sampling diagram provided in the embodiment is combined with Figure 3 and Figure 4 to describe the method in detail. The method comprises the following steps.

[0072] S301, acquiring signal periods of three continuous wheel speed pulse signals from a wheel speed pulse signal of a vehicle generated by a signal collection interface;

[0073] Specifically, the wheel speed sensor collects the vehicle wheel speed original signal into the signal acquisition interface, and the signal acquisition interface generates the wheel speed pulse signal according to the received vehicle wheel speed original signal.

[0074] The wheel speed sensor is generally a magneto-electric sensor. The potential pulse obtained by the magneto-electric sensor, i.e., the vehicle wheel speed original signal, is input into the signal acquisition interface to be arranged as a waveform pulse signal, i.e., the wheel speed pulse signal.

[0075] In the wheel speed pulse signal, the signal periods of three continuous wheel speed pulse signals are obtained, which are a first signal period, a second signal period, and a third signal period.

[0076] S302, obtaining the difference of the signal periods of any two wheel speed pulse signals, if the obtained difference is less than a preset difference, averaging the signal periods of the three wheel speed pulse signals to obtain an average signal period, and taking the average signal period as an effective signal period.

[0077] Specifically, the difference of the first signal period and the second signal period, the difference of the first signal period and the third signal period, and the difference of the second signal period and the third signal period are calculated, i.e., the difference of the signal periods of any two wheel speed pulse signals is obtained.

[0078] If the obtained difference is less than a preset difference, the signal periods of the three wheel speed pulse signals are averaged to obtain an average signal period, which is considered as a normal wheel speed signal, and the average signal period is taken as an effective signal period. If the obtained difference is greater than or equal to the preset difference, it is considered that the wheel speed pulse signal has an error interference signal, and it is not considered as a normal wheel speed signal. The other wheel speed pulse signal is resampled and confirmed until a normal wheel speed signal, i.e., an effective signal period, is obtained.

[0079] In combination with FIG. 3, Figure 4 In the normal wheel speed signal, three continuous wheel speed pulse signals are obtained, and based on the three continuous wheel speed pulse signals, an effective signal period T1 is obtained.

[0080] S303, obtaining an estimated signal period according to the effective signal period and a vehicle speed change value.

[0081] If the vehicle speed change value indicates that the vehicle speed increases, the estimated signal period is less than the effective signal period. If the vehicle speed change value indicates that the vehicle speed decreases, the estimated signal period is greater than the effective signal period.

[0082] Specifically, the vehicle speed change value can be obtained by the Hall sensor, and the vehicle speed change value can be used to determine the signal sampling window. The signal sampling window is determined based on the effective signal period and the vehicle speed change value.

[0083] In combination Figure 4 As shown in the figure, the estimated signal period is obtained based on the effective signal period T1 and the vehicle speed change value, that is, the signal period corresponding to the signal sampling window.

[0084] S304, determining the start and end times of the signal sampling window according to the estimated signal period, so that the signal sampling window collects the continuous partial rising edge and partial falling edge corresponding to the rising edge inflection point or the falling edge inflection point;

[0085] Among them, the signal sampling window is two, and the first signal sampling window is used to collect the partial falling edge and partial rising edge corresponding to the rising inflection point, and the second signal sampling window is used to collect the partial rising edge and partial falling edge corresponding to the falling inflection point.

[0086] In combination Figure 4 As shown in the figure, based on the estimated signal period, the collection time of the first signal sampling window, that is, the start and end times of the signal rising edge opening and closing window, is obtained, which is used to collect the continuous partial falling edge and partial rising edge corresponding to the rising edge inflection point. The collection time of the second signal sampling window, that is, the start and end times of the signal falling edge opening and closing window, is also obtained, which is used to collect the continuous partial rising edge and partial falling edge corresponding to the falling edge inflection point.

[0087] Specifically, when the start and end times of the signal sampling window are determined based on the estimated signal period, some possible error interference signals appear before the start time of the signal sampling window, and the signal sampling window cannot collect these error interference signals; when these error interference signals appear after the end time of the signal sampling window, the signal sampling window also cannot collect these error interference signals.

[0088] Specifically, as the signal sampling window, it is necessary to ensure that the change rising edge or falling edge of the high level and low level of the pulse signal is captured in a reasonable sampling interval range.

[0089] S305, after the rising edge is sampled through the first sampling window, the rising edge is extended to the start time of the second sampling window after the sampling of the first sampling window is completed.

[0090] Specifically, when some possible normal signals fall between the end time of the first sampling window and the start time of the second sampling window, in order to prevent them from being judged as false interference signals, the level can be pulled up to make them enter the sampling interval of the second sampling window to collect the pulse signals, thereby further improving the accuracy.

[0091] In combination with Figure 4 As shown in the figure, in order to prevent normal wheel speed signals with reasonable errors from falling between the end time of the signal rising edge opening and closing window and the start time of the signal falling edge opening and closing window, the level of the normal wheel speed signal is pulled up to make it enter the signal falling edge opening and closing window to collect the pulse signals.

[0092] S306, after sampling the falling edge through the second sampling window, the falling edge is extended to the start time of the next sampling window after the sampling of the second sampling window is completed;

[0093] Specifically, when some possible normal signals fall between the end time of the second sampling window and the start time of the next sampling window, in order to prevent them from being judged as false interference signals, the level can also be pulled up to make them enter the sampling interval of the next first sampling window to collect the pulse signals, thereby improving the accuracy of the sampling window collection.

[0094] In combination with Figure 4 As shown in the figure, in order to prevent normal wheel speed signals with reasonable errors from falling between the end time of the signal falling edge opening and closing window and the start time of the next signal rising edge opening and closing window, the level of the normal wheel speed signal is pulled up to make it enter the signal rising edge opening and closing window to collect the pulse signals.

[0095] S307, according to the target signal period corresponding to the target pulse signal, the wheel speed of the vehicle is obtained;

[0096] After obtaining the wheel speed of the vehicle, the signal sampling window of the next wheel speed pulse signal is continuously set according to the target signal period and the new wheel speed change value, so as to continuously obtain the wheel speed of the vehicle.

[0097] Specifically, when the target pulse signal is collected through the set signal sampling window, the signal sampling window is also continuously adapted according to the changed target signal period and the new wheel speed change value, that is, when the target signal period and the wheel speed change value change, the start time, the end time of the sampling window and the time length of the sampling window are adaptively changed, and after the target pulse signal is collected in the wheel speed pulse signal, the target signal period corresponding to the target pulse signal is sent into the single-chip system in the control unit to obtain the wheel speed of the vehicle.

[0098] The embodiment provides a wheel speed pulse signal identification method, which obtains an effective signal period according to a wheel speed pulse signal of a vehicle generated by a signal collection interface, wherein the signal period of three continuous wheel speed pulse signals is obtained; the effective signal period is confirmed; meanwhile, signal sampling includes two, wherein a first signal sampling window is used for collecting a partial falling edge and a partial rising edge corresponding to a rising inflection point, and a second signal sampling window is used for sampling a partial rising edge and a partial falling edge corresponding to a falling inflection point, and after the first sampling window sampling is completed, the rising edge is extended to the start moment of the second sampling window, and after the second sampling window sampling is completed, the falling edge is extended to the start moment of the next sampling window, so that the effective signal is avoided from being judged as a false interference signal, and the accuracy of wheel speed signal identification and calculation is further improved.

[0099] The embodiment of the present application can divide the function modules of the electronic device or the host device according to the above method examples, for example, each function module can be divided according to each function, or two or more functions can be integrated in one processing unit. The integrated unit can be realized in the form of hardware or in the form of a software function module. It should be noted that the division of the modules in the embodiment of the present application is illustrative, and is only a logical function division, and another division mode can be used in actual implementation.

[0100] Figure 5 A structure schematic diagram of a wheel speed pulse signal identification device provided by the embodiment of the present application is shown in the figure. Figure 5 As shown in the figure, the device 500 includes:

[0101] The acquisition module 501 is configured to obtain an effective signal period according to a wheel speed pulse signal of a vehicle generated by a signal collection interface, wherein the signal collection interface is configured to generate the wheel speed pulse signal according to a wheel speed original signal collected by a wheel speed sensor.

[0102] The sampling module 502 is configured to set a signal sampling window of a next wheel speed pulse signal according to the effective signal period and a vehicle speed change value, and the signal sampling window is configured to sample a continuous partial rising edge and a partial falling edge of the wheel speed pulse signal.

[0103] The processing module 503 is configured to sample through the signal sampling window to obtain a target pulse signal, and obtain a wheel speed of the vehicle according to a target signal period corresponding to the target pulse signal.

[0104] Further, the acquisition module 501 is specifically configured to: acquire signal periods of three continuous wheel speed pulse signals; acquire a difference value of the signal periods of any two wheel speed pulse signals, and if the obtained difference values are all less than a preset difference value, then average the signal periods of the three wheel speed pulse signals to obtain an average signal period; and take the average signal period as the effective signal period.

[0105] Further, the sampling module 502 is specifically configured to: obtain an estimated signal period according to the effective signal period and a vehicle speed change value; and determine a start time and an end time of a signal sampling window according to the estimated signal period, so that the signal sampling window collects continuous partial rising edges and partial falling edges corresponding to a rising inflection point or a falling inflection point.

[0106] Further, if the vehicle speed change value indicates that the vehicle speed increases, the estimated signal period is less than the effective signal period; and if the vehicle speed change value indicates that the vehicle speed decreases, the estimated signal period is greater than the effective signal period.

[0107] Further, the signal sampling window includes two, wherein a first signal sampling window is used to collect partial falling edges and partial rising edges corresponding to a rising inflection point, and a second signal sampling window is used to collect partial rising edges and partial falling edges corresponding to a falling inflection point.

[0108] Further, the processing module 503 is specifically configured to: after sampling to a rising edge through the first sampling window, extend the rising edge to a start time of the second sampling window after the sampling of the first sampling window ends; and after sampling to a falling edge through the second sampling window, extend the falling edge to a start time of a next sampling window after the sampling of the second sampling window ends.

[0109] Further, the processing module 503 is specifically configured to: in one effective signal period, after acquiring a wheel speed of the vehicle according to a target signal period corresponding to a target pulse signal, continue to set a signal sampling window of a next wheel speed pulse signal according to the target signal period and a new vehicle speed change value, so as to continuously acquire the wheel speed of the vehicle.

[0110] The wheel speed pulse signal recognition electronic device provided in the embodiment can execute the wheel speed pulse signal recognition method in the above embodiment, and has similar implementation principles and technical effects, which will not be described here again.

[0111] In the specific implementation of the gear control device based on a heavy-duty vehicle, each module can be implemented as a processor, and the processor can execute computer execution instructions stored in a memory, so that the processor executes the gear control method based on the heavy-duty vehicle.

[0112] Figure 6 The structure schematic diagram of the electronic device provided in the embodiment is shown in FIG. 1. Figure 6As shown, the electronic device 600 includes at least one processor 601 and a memory 602. The electronic device 600 further includes a communication component 603. Wherein the processor 601, the memory 602 and the communication component 603 are connected through a bus 604.

[0113] In the implementation process, the at least one processor 601 executes the computer execution instructions stored in the memory 602, so that the at least one processor 601 performs the wheel speed pulse signal identification processing method as executed by the electronic device side.

[0114] The specific implementation process of the processor 601 can refer to the above-mentioned method embodiments, which have similar implementation principles and technical effects, and will not be repeated here.

[0115] In the above embodiments, it should be understood that the processor can be a central processing unit (English: Central Processing Unit, for short: CPU), and can also be other general-purpose processors, digital signal processors (English: Digital Signal Processor, for short: DSP), application specific integrated circuits (English: Application Specific Integrated Circuit, for short: ASIC) and the like. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor or the like. The steps of the method disclosed in combination with the application can be directly embodied as hardware processor execution, or executed by hardware and software modules in the processor.

[0116] The memory can contain a high-speed RAM memory, and can also include a non-volatile storage NVM, such as at least one disk memory.

[0117] The bus can be an industry standard architecture (Industry Standard Architecture, ISA) bus, a peripheral component interconnect (Peripheral Component, PCI) bus or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, the bus in the drawings of the present application does not limit only one bus or one type of bus.

[0118] The functions implemented by the electronic device and the host device are described above, and the scheme provided by the embodiments of the present application is introduced. It can be understood that the electronic device or the host device includes a hardware structure and / or a software module corresponding to each function to implement the above functions. The units and algorithm steps of each example described in combination with the embodiments disclosed in the embodiments of the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is implemented in hardware or computer software driven hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of the embodiments of the present application.

[0119] The application also provides a computer readable storage medium, the computer readable storage medium stores computer execution instructions, when the processor executes the computer execution instructions, the method for identifying wheel speed pulse signals is realized.

[0120] The computer readable storage medium described above can be implemented by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The readable storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0121] An exemplary readable storage medium is coupled to the processor, so that the processor can read information from the readable storage medium, and can write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (ASIC). Of course, the processor and the readable storage medium can also exist as discrete components in the electronic device or the host device.

[0122] The application also provides a computer program product, the computer program product includes: a computer program, the computer program is stored in a readable storage medium, at least one processor of the electronic device can read the computer program from the readable storage medium, and the at least one processor executes the computer program so that the electronic device executes the scheme provided by any one of the above embodiments.

[0123] Those skilled in the art can understand that all or part of the steps of the above-mentioned method embodiments can be completed by program instruction related hardware. The foregoing program can be stored in a computer readable storage medium. The program executes to perform the steps of the above-mentioned method embodiments; and the foregoing storage medium includes various storage media that can store program codes, such as ROM, RAM, magnetic disk or optical disk.

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A wheel speed pulse signal recognition method, characterized by, The method applied to an enhanced time processing unit eTPU of a single-chip microcomputer system, comprising: According to the wheel speed pulse signal of the vehicle generated by the signal acquisition interface, an effective signal period is obtained, wherein the signal acquisition interface generates the wheel speed pulse signal according to the wheel speed original signal collected by the wheel speed sensor; According to the effective signal period and a vehicle speed change value, a signal sampling window of a next wheel speed pulse signal is set, the signal sampling window is used for sampling continuous partial rising edges and partial falling edges of the wheel speed pulse signal; Through sampling by the signal sampling window, a target pulse signal is obtained, and the wheel speed of the vehicle is obtained according to a target signal period corresponding to the target pulse signal; The method further comprises: According to the effective signal period and the vehicle speed change value, a predicted signal period is obtained; According to the predicted signal period, the start and end times of the signal sampling window are determined, so that the signal sampling window collects continuous partial rising edges and partial falling edges corresponding to the rising inflection point or the falling inflection point.

2. The method of claim 1, wherein, The method further comprises: According to the wheel speed pulse signal of the vehicle generated by the signal acquisition interface, signal periods of three wheel speed pulse signals in succession are obtained; The difference values of the signal periods of any two wheel speed pulse signals are obtained, if the obtained difference values are all less than a preset difference value, the signal periods of the three wheel speed pulse signals are averaged to obtain an average signal period; The average signal period is taken as the effective signal period.

3. The method of claim 1, wherein, If the vehicle speed change value indicates that the vehicle speed increases, the predicted signal period is less than the effective signal period; If the vehicle speed change value indicates that the vehicle speed decreases, the predicted signal period is greater than the effective signal period.

4. The method of claim 1, wherein, The signal sampling window is two, wherein a first signal sampling window is used for collecting partial falling edges and partial rising edges corresponding to the rising inflection point, and a second signal sampling window is used for sampling partial rising edges and partial falling edges corresponding to the falling inflection point.

5. The method of claim 1, wherein, The method further comprises: After sampling to the rising edge by the first sampling window, the rising edge is extended to the start time of the second sampling window after the sampling of the first sampling window is ended; After sampling to the falling edge by the second sampling window, the falling edge is extended to the start time of the next sampling window after the sampling of the second sampling window is ended.

6. The method of claim 1, in an active signal period, wherein, After the wheel speed of the vehicle is obtained according to the target signal period corresponding to the target pulse signal, the method further comprises: According to the target signal period and a new vehicle speed change value, the signal sampling window of the next wheel speed pulse signal is continuously set to continuously obtain the wheel speed of the vehicle.

7. A wheel speed pulse signal recognition device for implementing the wheel speed pulse signal recognition method according to any one of claims 1 to 6, characterized by The method further comprises: An obtaining module is configured to obtain an effective signal period according to a wheel speed pulse signal of a vehicle generated by a signal acquisition interface, wherein the signal acquisition interface generates the wheel speed pulse signal according to a wheel speed original signal collected by a wheel speed sensor; The sampling module is configured to set a signal sampling window of a next wheel speed pulse signal according to the effective signal period and the vehicle speed change value, and the signal sampling window is configured to sample continuous partial rising edges and partial falling edges of the wheel speed pulse signal; The processing module is configured to sample the signal sampling window to obtain a target pulse signal, and obtain the wheel speed of the vehicle according to a target signal period corresponding to the target pulse signal.

8. A wheel speed pulse signal recognition electronic device comprising: A processor, and a memory connected with the processor in communication; The memory stores computer execution instructions; The processor executes the computer execution instructions stored in the memory to implement the method according to any one of claims 1-6.

9. A computer storage medium, characterized in that The computer storage medium stores computer execution instructions, and the computer execution instructions are executed by the processor to implement the wheel speed pulse signal identification method according to any one of claims 1-6.

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