CN117424603A - Vehicle signal compression method, system and medium based on time function - Google Patents
Vehicle signal compression method, system and medium based on time function Download PDFInfo
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Abstract
The invention relates to a vehicle signal compression method, a system and a medium based on a time function, and relates to the field of signal processing; constructing a time domain symbol function based on the jump time, wherein the time domain symbol function is used for determining the position of the inquiry time relative to the jump time; determining a signal update value of the signal after the jump time; and dynamically updating a signal function based on the time domain symbol function and the signal update value to construct and store a full time domain signal function. The invention calculates the vehicle signal in real time and compresses the signal value into a signal function related to time, and the cost of storing signal data by enterprises is greatly saved because the storage space occupied by the function is smaller than the storage space occupied by storing the signal value.
Description
Technical Field
The present invention relates to the field of signal processing, and in particular, to a method, a system, and a medium for compressing a vehicle signal based on a time function.
Background
With the continuous development of automobile electronics, vehicle signal data becomes one of important data in the automobile industry. Vehicle signals are important for monitoring, management and maintenance of vehicles. Because of the huge amount of data in these vehicle signals, storing these data requires huge storage capacity and huge cost, while ensuring quick access to the data.
The current compression method for the vehicle signal is generally based on the generation of a base function, the generation mode of the base function is to represent the signal by a function, but the function represented by the base function still carries signal information of all acquisition time points, and the compression effect of the representation mode on the signal storage is limited from the viewpoint of signal compression.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a method, a system and a medium for compressing a vehicle signal based on a time function, so as to save a storage space, save a storage cost, and increase a processing speed and an access speed of data.
In order to achieve the above purpose, the present invention adopts the following technical scheme.
In a first aspect, the present invention provides a vehicle signal compression method based on a time function, which adopts the following technical scheme:
a method of vehicle signal compression based on a time function, comprising:
determining a jump time of the signal based on a preset tolerance;
constructing a time domain symbol function based on the jump time, wherein the time domain symbol function is used for determining the position of the inquiry time relative to the jump time;
determining a signal update value of the signal after the jump time; and dynamically updating a signal function based on the time domain symbol function and the signal update value to construct and store a full time domain signal function.
Further, in the vehicle signal compression method based on a time function, the tolerance is determined by signal compression accuracy; the greater the tolerance, the lower the signal compression accuracy.
Further, in the above method for compressing a vehicle signal based on a time function, when the tolerance is 0, the signal compression is lossless compression.
Further, in the vehicle signal compression method based on a time function, the constructing a time domain symbol function based on the jump time includes:
when the inquiry time is before the jump time, the time domain symbol function is-1;
and when the inquiry time is equal to or greater than the jump time, the value of the time domain symbol function is 1.
Further, in the vehicle signal compression method based on a time function, the determining the signal update value of the signal after the jump time includes:
constructing a signal function after the jump time;
and when the signal function is positioned at the jump time, the value of the signal function is equal to the value of the signal after jump.
Further, in the above-mentioned vehicle signal compression method based on a time function, the signal value at the initial time of the signal function is set to be a constant.
Further, in the vehicle signal compression method based on a time function, the dynamically updating the signal function based on the time domain symbol function and the signal update value includes:
updating the signal function at the jump time;
the signal function is constructed by the signal function at the previous moment and the signal updating value after jump;
wherein coefficients of a signal function term at the previous time instant and coefficients of the signal update value term are determined based on the time domain symbol function.
In a second aspect, the present invention provides a vehicle signal acquisition method based on a time function, which adopts the following technical scheme:
a method of vehicle signal acquisition based on a time function, comprising:
monitoring vehicle signals through a vehicle-mounted sensor;
updating and compressing the vehicle signal based on the signal compression method according to any one of the first aspect to obtain a compressed signal; and storing the compressed signal.
In a third aspect, the present invention provides a method for reading a vehicle compressed signal based on a time function, which adopts the following technical scheme:
a method of reading a vehicle compression signal based on a time function, comprising:
acquiring a vehicle compression signal obtained based on the signal compression method according to any one of the above first aspects;
and inputting the inquiry time into a signal function represented by the vehicle compression signal to obtain a vehicle signal before compression.
In a fourth aspect, the present invention provides a vehicle signal compression system based on a time function, which adopts the following technical scheme:
a vehicle signal compression system based on a time function, comprising:
the jump time monitoring module is at least used for determining the jump time of the signal based on the preset tolerance;
the time domain symbol function construction module is at least used for constructing a time domain symbol function based on the jump time, and the time domain symbol function is used for determining the position of the inquiry time relative to the jump time;
the signal update value reading module is at least used for determining the signal update value of the signal after the jump time; and a full time domain signal function construction module for dynamically updating a signal function based at least on the time domain symbol function and the signal update value to construct and store a full time domain signal function.
In a fifth aspect, the present invention provides a readable storage medium, which adopts the following technical scheme:
a readable storage medium storing computer instructions which when executed by a processor implement a method of time function based vehicle signal compression as in any one of the first aspects above.
In summary, compared with the prior art, the invention has at least one of the following beneficial technical effects:
the invention creates the full-time domain signal function by definitely defining the important change points of the signal, constructing the time domain symbol function and recording the signal value after jump, and the full-time domain signal function occupies smaller storage space, thereby saving a large amount of storage space, saving storage cost, improving the processing speed and the access speed of the data and realizing the effective compression and representation of the vehicle signal data.
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In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of an embodiment of a method for compressing vehicle signals based on a time function according to the present invention.
FIG. 2 is a signal diagram of an embodiment of a vehicle signal in a vehicle signal compression method based on a time function according to the present invention.
FIG. 3 is a functional diagram of an embodiment of a signal function in a vehicle signal compression method based on a time function according to the present invention.
FIG. 4 is a block flow diagram of an embodiment of a method for vehicle signal acquisition based on a time function according to the present invention.
FIG. 5 is a flow chart of a method for reading a compressed signal of a vehicle based on a time function according to an embodiment of the present invention.
FIG. 6 is a schematic diagram of a vehicle signal compression system based on a time function according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, based on the embodiments herein, which are within the scope of the protection of the present application, will be within the skill of the art without inventive effort. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and explanation only and is not intended to limit the present application.
It should be noted that the following description order of the embodiments is not intended to limit the preferred order of the embodiments of the present application. In the following embodiments, the descriptions of the embodiments are focused on, and for the part that is not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
The execution sequence of the method steps in the embodiments of the present invention may be performed according to the sequence described in the specific embodiments, or the execution sequence of each step may be adjusted according to actual needs on the premise of solving the technical problem, which is not listed here.
The invention is described in further detail below with reference to fig. 1-6.
Referring to fig. 1, in an embodiment of the present invention, a vehicle signal compression method based on a time function includes:
s1, determining a jump time of a signal based on a preset tolerance;
s2, constructing a time domain symbol function based on the jump time, wherein the time domain symbol function is used for determining the position of the inquiry time relative to the jump time;
s3, determining a signal update value of the signal after the jump time;
and S4, dynamically updating the signal function based on the time domain symbol function and the signal updating value so as to construct and store a full time domain signal function.
Specifically, first, in step S1, it is determined when a jump occurs in the vehicle signal value according to a preset tolerance. A transition is considered to occur if the change in signal value exceeds a tolerance threshold. Next, step S2 builds a time domain symbol function to help determine the position of the interrogation time relative to the time of the most recent signal transition. Then, in step S3, a signal update value of the signal after the transition time is determined, the signal update value being a new signal value at the transition time. Finally, a full-time domain signal function is constructed, which is dynamically updated according to the combination of the time domain symbol function and the signal update value, which contains the signal change information and can change with time according to the value of the time domain symbol function and the signal update value. The full time domain signal function may be used to represent the behavior of the whole signal and not just the value of the transition instant.
The invention creates the full-time domain signal function by definitely defining the important change points of the signal, constructing the time domain symbol function and recording the signal value after jump, and the full-time domain signal function occupies smaller storage space, thereby saving a large amount of storage space, saving storage cost, improving the processing speed and the access speed of the data and realizing the effective compression and representation of the vehicle signal data. This enables the important features of the signal change to be stored and analyzed in a more compact manner, helping to improve the efficiency and accuracy of vehicle data processing, thereby greatly saving the cost of the enterprise to store the signal data.
Further, as an embodiment of the present invention, the tolerance is determined by signal compression accuracy; the greater the tolerance, the lower the signal compression accuracy.
In particular, the magnitude of the tolerance plays a critical role in the signal compression accuracy. Tolerance is a parameter used to measure when significant changes in the signal are identified, which directly affects how much detail and small changes are captured when compressing the vehicle signal. In particular, the greater the tolerance, the more tolerant the system is to small amplitude fluctuations in the signal, and therefore the accuracy of signal compression is relatively low, and small variations may be ignored. Conversely, if the tolerance is smaller, the system will more sensitively detect subtle changes in the signal, thereby improving the accuracy of signal compression, but may increase the data storage requirements.
Exemplary, the tolerance is denoted by r, and the signal value transition condition |v is set i -v i-1 |>r, where v i-1 Signal value v representing time when last signal value was hopped i A signal value representing the current signal reporting time, if the condition is satisfied, the signal value is consideredA jump occurs. When r is>And when 0, as long as the change range of the signal value between the current signal value and the last jump time is larger than r, the signal value is considered to jump, otherwise, the signal value is considered to not jump.
Further, as an embodiment of the present invention, when the tolerance is 0, the signal compression is lossless compression.
Specifically, when the tolerance is set to 0, then the task is to employ a lossless compression method. Lossless compression means that no information of the original data is lost when compressing the vehicle signal, and the integrity of the signal is preserved. This is because a tolerance of 0 indicates that it is extremely sensitive to changes in the signal, and signal compression is triggered only when a significant transition does occur.
This approach is important for those applications where maintaining data integrity is required, such as in data recording, analysis, or subsequent processing tasks where accurate restoration of the original signal is required, where the signal value transitions are sparse in discrete signals or time domain space. At the same time, this also means a relatively high data storage requirement, since all signal details are preserved. Therefore, it is important to choose whether to use lossless compression or to adjust the tolerance according to specific application requirements to balance data integrity and storage efficiency.
Therefore, according to specific application and requirement, the tolerance value can be adjusted according to the requirement of the signal compression precision, so as to realize the vehicle signal compression method which is more suitable for specific application. Such flexibility allows for efficient balancing of data accuracy and storage efficiency in different situations.
Further, as an embodiment of the present invention, step S2, constructing a time domain symbol function based on the hopping time, includes:
when the inquiry time is before the jump time, the time domain symbol function is-1;
and when the inquiry time is equal to or greater than the jump time, the value of the time domain symbol function is 1.
In particular, the function of the time domain symbol functions is to help determine the position of the interrogation time relative to the transition instant of the signal for subsequent signal analysis. The rules of the time domain symbol function are as follows:
if the inquiry time is earlier than the jump time of the signal, the value of the time domain symbol function is set to be-1, and the inquiry time is positioned before the jump time;
if the inquiry time is equal to or later than the transition instant of the signal, the value of the time domain symbol function is set to 1, indicating that the inquiry time is at or later than the transition instant.
That is, the time domain sign function sgn (t-i):
wherein t is the inquiry time, i is the signal reporting time, and i >0.
This approach allows the classification of the exact location of the query time, enabling the point in time of the change in state of the signal to be located unambiguously when analyzing the vehicle signal, which is very helpful for understanding the behavior of the signal. This time domain symbol function plays an important role in constructing the full time domain signal function.
Further, as an embodiment of the present invention, step S3, determining a signal update value of the signal after the transition time includes:
constructing a signal function after the jump time;
and when the signal function is positioned at the jump time, the value of the signal function is equal to the value of the signal after jump.
Specifically, a signal function f after jump time is constructed i+ The way of (2) is as follows: when the inquiry time is at the transition instant, i.e. after the transition instant, the value of the signal function is set to the value of the signal after the transition. Can make f i+ ＝v i Wherein v is i The signal value is the signal value at the jump time, which means that after the signal value jumps, when the inquiry time is greater than or equal to the jump time, the inquiry value of the signal function is v i 。
When the signal hops, the signal values after the time of the hopping will be recorded and used for subsequent analysis and processing. This helps to preserve the exact signal value after the transition time, thereby allowing important change points and states of the signal to be captured and preserved, which is essential for subsequent analysis and compression of the signal.
Further, as an embodiment of the present invention, the signal value at the initial time of the signal function is set to be constant. Specifically, when i=0, f 0 C, i.e. the signal value defaults to c at time 0, c being a constant.
Further, as an embodiment of the present invention, step S4, dynamically updating the signal function based on the time domain symbol function and the signal update value, includes:
updating the signal function at the jump time;
the signal function is constructed by the signal function at the previous moment and the signal updating value after jump;
wherein coefficients of a signal function term at the previous time instant and coefficients of the signal update value term are determined based on the time domain symbol function.
Specifically, the dynamic updating of the signal function is realized by combining the signal function at the previous moment and the signal updated value after jump. The time domain sign function is used to determine how to adjust the coefficients of these combined terms. This dynamic update process allows for timely recording and capturing of state changes of the signal as it hops to more accurately represent and analyze the evolution of the signal, thereby improving the accuracy of signal processing. I.e. when |v i -v i-1 |>r, when the signal value jump condition is triggered, namely executing the time for updating the signal function structure, the updating rule satisfies the following conditions:
wherein f a And (t) is a signal function or a full-time domain signal inquiry function, a is the frequency of signal value jump and is used for identifying the name of the current function, and a=a+1 is used for signal value jump each time. f (f) a-1 As a function of the signal prior to the signal value transition. f (f) i+ And (3) identifying the signal hopping time and the function values after the signal hopping time as a signal function after the hopping time, which is defined by the step (S3). Thus f a-1 And f i+ Contains signal value information in full time domain, and updated signal function f a (t) fusing both into a functional representation.
For example, a set of signals (t, v), i.e., (1, 2), (2, 2), (3, 0), (4, 0), (5, 0), (6, 3), (7, 3), (8, 3), is assumed as shown in fig. 2.
First, a signal value error tolerance value r=0 and a signal initial value c=0 are set.
Available at time 1, signal value |1-0|>0, it can be seen that a jump a=1, i.e. f, occurs at time 1 a-1 =0 according toThe method can obtain: />
At time 2, the signal value |2-2| is not more than 0, so that the signal value jump condition is not satisfied, and the signal function is not updated.
Signal value 0-2|at time 3>0 is hopped, the value is changed from 2 to 0, and f is the moment 1 (t) =1+sgn (t-i), the following can be obtained:
the signal value is unchanged at times 4 and 5, and the signal function is not updated.
Signal value 3-0|at time 6>A transition occurs in 0, changing the value from 0 to 3, at which time, the signal is sent out at time 6And (3) raw jump, namely:
thus, the current latest signal function is
Wherein f 3 As shown in fig. 3, the signal function is correctly generated as can be seen from fig. 3.
The invention provides a vehicle signal compression method based on a time function, which compresses vehicle discrete signals into a time-based function expression under a massive vehicle signal reporting scene. For a discrete signal scene with sparse signal value jump and a continuous signal scene with frequent signal value jump in a time domain space, the method provides a general calculation scheme, the tolerable precision of the signal can be dynamically adjusted by adjusting the signal value jump tolerance, and the method is suitable for the discrete signal or the scene with sparse signal value jump in the time domain space when the tolerance is 0; when the tolerance is greater than 0, the tolerance can be set according to actual demands, so that a method for sacrificing tolerable precision is provided for a scene with dense signal value jump in a continuous signal or time domain to realize compression. The function itself occupies a smaller memory space, so that a large amount of memory space can be saved, thereby saving the memory cost and improving the processing speed and the access speed of data.
The embodiment of the invention also discloses a vehicle signal acquisition method based on the time function.
Referring to fig. 4, a vehicle signal acquisition method based on a time function includes:
a1, monitoring vehicle signals through a vehicle-mounted sensor;
a2, updating and compressing the vehicle signal based on the signal compression method according to any embodiment to obtain a compressed signal;
a3, storing the compressed signal.
Specifically, the vehicle signal acquisition method based on the time function comprises the following steps: first, in the A1 stage, vehicle signals are monitored and collected by an in-vehicle sensor. Then, in the A2 stage, the vehicle signal is updated and compressed by using the signal compression method in any of the above embodiments, and compressed signal data is obtained. Finally, in stage A3, these compressed signal data are stored for subsequent analysis, processing or other use.
The vehicle signal acquisition method based on the time function allows vehicle signals to be effectively acquired and stored, and simultaneously reduces the storage requirement of data, so that the processing and application of vehicle data are better supported.
The embodiment of the invention also discloses a vehicle compressed signal reading method based on the time function.
Referring to fig. 5, a method for reading a vehicle compression signal based on a time function includes:
b1, acquiring a vehicle compression signal obtained based on the signal compression method according to any one of the above embodiments;
and B2, inputting the inquiry time into a signal function represented by the vehicle compression signal to obtain a vehicle signal before compression.
Specifically, the method for reading the vehicle compression signal based on the time function comprises the following steps: first, in the B1 stage, a vehicle compression signal generated by any one of the signal compression methods in the above embodiments is acquired. Then, in the B2 stage, the inquiry time is input into a signal function represented in the compressed signal, from which the pre-compression data of the original vehicle signal is obtained. This method allows the user to extract the original vehicle signal for analysis or other purposes based on the desired interrogation time, thereby enabling the compressed vehicle signal to be read and recovered.
The embodiment of the invention also discloses a vehicle signal compression system based on the time function.
Referring to fig. 6, a time function-based vehicle signal compression system includes a transition time monitoring module 1, a time domain symbol function construction module 2, a signal update value reading module 3, and a full time domain signal function construction module 4.
The jump time monitoring module 1 is at least used for determining the jump time of the signal based on the preset tolerance, and the jump time monitoring module 1 helps the system determine when the signal is considered to have a significant change, namely, the signal value jumps. This is a critical moment in the compression system for tracking state changes of the signal.
The time domain symbol function construction module 2 is at least configured to construct a time domain symbol function based on the transition time, where the time domain symbol function is used to determine a position of the query time relative to the transition time, and the time domain symbol function construction module 2 helps the system determine the position of the query time relative to the transition time, so as to provide a time reference in signal analysis. The time domain symbol function is used to dynamically update the signal function.
The signal update value reading module 3 is at least used for determining the signal update value of the signal after the jump time, and the signal update value reading module 3 captures and records the new signal value after the jump time so as to ensure that the state change of the signal can be reserved in the compressed data.
The full-time-domain signal function construction module 4 is configured to dynamically update the signal function based at least on the time-domain symbol function and the signal update value to construct and store a full-time-domain signal function, and the full-time-domain signal function construction module 4 constructs and stores the full-time-domain signal function to better represent behavior and changes of the vehicle signal. This allows the signal function to be dynamically evolved in time to accommodate changes in the signal, thereby improving the accuracy of signal processing.
In the vehicle signal compression system based on the time function, the cooperation of the four modules enables the system to effectively capture and record key characteristics and state changes when compressing vehicle signals. This helps reduce the storage requirements of the data while retaining important information, providing powerful support for subsequent signal analysis and applications. The flexibility and timeliness of the system enable the system to be suitable for different vehicle signal processing requirements, so that the usability of data and the accuracy of analysis are improved.
According to the vehicle signal compression system disclosed by the embodiment of the invention, when a signal is compressed, the signal value is compressed into a time-based function expression, so that the storage space occupied by data can be greatly reduced, the storage cost is saved, the processing speed and the access speed of the data can be improved, the user experience is improved, the storage space and the time required by backup and recovery can be reduced, and the data backup and recovery are facilitated.
The embodiment of the invention also discloses a readable storage medium.
A readable storage medium storing a computer program which when executed by a processor performs the steps of a method of vehicle signal compression based on a time function as in any one of the above embodiments. The computer readable storage medium may include: any entity or device capable of carrying a computer program, a recording medium, a USB flash disk, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a Read-only memory (ROM), a random access memory (RAM, random Access Memory), a software distribution medium, and so forth. The computer program comprises computer program code. The computer program code may be in the form of source code, object code, executable files, or in some intermediate form, among others. The computer readable storage medium may include: any entity or device capable of carrying computer program code, a recording medium, a USB flash disk, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a Read-only memory (ROM), a random access memory (RAM, random Access Memory), a software distribution medium, and so forth.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, system that includes a processing module, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (11)
1. A method of compressing a vehicle signal based on a time function, comprising:
determining a jump time of the signal based on a preset tolerance;
constructing a time domain symbol function based on the jump time, wherein the time domain symbol function is used for determining the position of the inquiry time relative to the jump time;
determining a signal update value of the signal after the jump time; the method comprises the steps of,
dynamically updating the signal function based on the time domain symbol function and the signal update value to construct and store a full time domain signal function.
2. A method of vehicle signal compression based on a time function as claimed in claim 1, wherein the tolerance is determined by signal compression accuracy; the greater the tolerance, the lower the signal compression accuracy.
3. A method of compressing a vehicle signal based on a time function as claimed in claim 2, wherein when said tolerance is 0, the signal compression is lossless compression.
4. The method for compressing a vehicle signal based on a time function according to claim 1, wherein said constructing a time domain symbol function based on said transition time instants comprises:
when the inquiry time is before the jump time, the time domain symbol function is-1;
and when the inquiry time is equal to or greater than the jump time, the value of the time domain symbol function is 1.
5. The method for compressing a vehicle signal based on a time function according to claim 1, wherein said determining a signal update value of the signal after the transition time comprises:
constructing a signal function after the jump time;
and when the signal function is positioned at the jump time, the value of the signal function is equal to the value of the signal after jump.
6. A method of compressing a vehicle signal based on a time function as recited in claim 5, wherein the signal value at the time of the initiation of the signal function is set to be constant.
7. A method of compressing a vehicle signal based on a time function as recited in claim 1, wherein said dynamically updating a signal function based on said time domain symbol function and said signal update value comprises:
updating the signal function at the jump time;
the signal function is constructed by the signal function at the previous moment and the signal updating value after jump;
wherein coefficients of a signal function term at the previous time instant and coefficients of the signal update value term are determined based on the time domain symbol function.
8. A method for vehicle signal acquisition based on a time function, the method comprising:
monitoring vehicle signals through a vehicle-mounted sensor;
updating and compressing the vehicle signal based on the signal compression method according to any one of claims 1 to 7 to obtain a compressed signal; and storing the compressed signal.
9. A method of reading a compressed signal of a vehicle based on a time function, the method comprising:
acquiring a vehicle compression signal obtained based on the signal compression method according to any one of claims 1 to 7;
and inputting the inquiry time into a signal function represented by the vehicle compression signal to obtain a vehicle signal before compression.
10. A vehicle signal compression system based on a function of time, the system comprising:
the jump time monitoring module is at least used for determining the jump time of the signal based on the preset tolerance;
the time domain symbol function construction module is at least used for constructing a time domain symbol function based on the jump time, and the time domain symbol function is used for determining the position of the inquiry time relative to the jump time;
the signal update value reading module is at least used for determining the signal update value of the signal after the jump time; the method comprises the steps of,
and the full time domain signal function construction module is at least used for dynamically updating the signal function based on the time domain symbol function and the signal updating value so as to construct and store the full time domain signal function.
11. A readable storage medium storing computer instructions which when executed by a processor implement a method of time function based vehicle signal compression as claimed in any one of claims 1 to 7.
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