CN114079594A - Data acquisition method and device for vehicle-mounted terminal and storage medium - Google Patents
Data acquisition method and device for vehicle-mounted terminal and storage medium Download PDFInfo
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- CN114079594A CN114079594A CN202111344449.6A CN202111344449A CN114079594A CN 114079594 A CN114079594 A CN 114079594A CN 202111344449 A CN202111344449 A CN 202111344449A CN 114079594 A CN114079594 A CN 114079594A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/22—Matching criteria, e.g. proximity measures
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention discloses a data acquisition method, equipment and a storage medium for a vehicle-mounted terminal, wherein the method comprises the following steps: acquiring an attribute parameter extreme value and a corresponding number of the attribute parameter extreme value at the current acquisition time as reference data through an attribute parameter list which is acquired at the current acquisition time and formed by a vehicle-mounted terminal package; acquiring an attribute parameter extreme value of the power storage battery and a corresponding number of the attribute parameter extreme value, which are uploaded to a CAN bus by a battery management system, as data to be verified, wherein the attribute parameter extreme value of the power storage battery and the corresponding number of the attribute parameter extreme value are acquired at the last acquisition time; and comparing the reference data with the data to be checked, if the reference data is equal to the data to be checked, uploading the attribute parameter extreme value of the power storage battery and the corresponding serial number of the attribute parameter extreme value to the CAN bus as effective data, uploading the effective data to the cloud, and finishing data acquisition at the current acquisition moment. Therefore, data from the battery management system can be acquired more accurately, and the problem that the data uploaded to the cloud end is inaccurate due to abnormal data is solved.
Description
Technical Field
The invention relates to the field of vehicle networking, in particular to a vehicle-mounted terminal data acquisition method, vehicle-mounted terminal data acquisition equipment and a computer readable storage medium.
Background
With the development of new energy automobile technology in recent years and the environment of vigorously supporting new energy automobiles in China, the new energy automobiles get good development situation, and the sales volume ratio of the new energy automobiles is improved accordingly. Meanwhile, the motorization, networking and intellectualization of the automobile are fully exerted on a new energy automobile platform, and a plurality of new energy automobiles are provided with a plurality of electric control units. In order to meet the indexes of the whole vehicle such as dynamic property, safety, economy and comfort, all parts are cooperated and interacted with each other through respective Electronic Control Units (ECUs), and the vehicle-mounted terminal is a key part which can realize interaction among a cloud end, a user and a vehicle end.
When the vehicle-mounted terminal collects several data of a single voltage list, a single voltage extreme value serial number, a battery pack probe temperature list, a probe temperature extreme value and an extreme value temperature probe code number of the power storage battery from the battery management system, the vehicle-mounted terminal usually directly collects an original CAN (Controller Area Network) message sent by the battery management system. However, due to the real-time property of the above-mentioned several items of data sent by the battery management system, there is a phenomenon that the cell voltage extreme value and the cell number of the voltage extreme value sent to the CAN bus by the battery management system at the same time are not matched with the values on the cell voltage list of the power storage battery, that is, at this time, the data of the cell voltage extreme value and the cell number of the voltage extreme value sent to the CAN bus by the battery management system is time t, and the data of the cell voltage extreme value and the cell number of the voltage extreme value sent to the CAN bus is processed from the cell voltage list at time (t-1). Similarly, the phenomena of probe temperature extreme value sent at the same time, extreme value temperature probe code number and numerical value mismatch on the battery pack probe temperature list also exist.
Disclosure of Invention
The invention mainly aims to provide a data acquisition method for a vehicle-mounted terminal, and aims to solve the technical problem that data such as a single voltage list, a single voltage extreme value serial number and the like of a power storage battery generated by a battery management system in the prior art are not matched.
In order to achieve the above object, the present invention provides a data acquisition method for a vehicle-mounted terminal, including:
acquiring an attribute parameter extreme value and a serial number corresponding to the attribute parameter extreme value at the current acquisition time as reference data through an attribute parameter list which is acquired by the vehicle-mounted terminal at the current acquisition time and is formed by the vehicle-mounted terminal group package;
acquiring an attribute parameter extreme value of the power storage battery uploaded to a CAN bus by a battery management system and a serial number corresponding to the attribute parameter extreme value as data to be checked, wherein the serial number corresponding to the attribute parameter extreme value and the attribute parameter extreme value of the power storage battery uploaded to the CAN bus is acquired by a vehicle-mounted terminal at the last acquisition time;
and comparing the reference data with the data to be checked, if the reference data is equal to the data to be checked, uploading the attribute parameter extreme value of the power storage battery uploaded to the CAN bus and the serial number corresponding to the attribute parameter extreme value to be effective data, uploading the effective data to the cloud, and completing data acquisition of the attribute parameter list, the attribute parameter extreme value and the serial number corresponding to the attribute parameter extreme value of the power storage battery of the vehicle-mounted terminal at the current acquisition moment.
Optionally, the collected attribute parameters are from a power storage battery single voltage list formed by the vehicle-mounted terminal group package, a single voltage extreme value and a single voltage extreme value serial number,
or from a battery pack probe temperature list, a probe temperature extreme value and an extreme temperature probe code number formed by the vehicle-mounted terminal pack.
Optionally, the data acquisition method of the vehicle-mounted terminal further includes:
acquiring the single cell voltages of all power storage batteries from a battery management system acquired by a vehicle-mounted terminal at the current acquisition moment, and combining the single cell voltages of all the power storage batteries into a single voltage list;
or acquiring the probe temperatures of all battery packs of all power storage batteries from the battery management system acquired by the vehicle-mounted terminal at the current acquisition moment, and combining the probe temperatures of all battery packs of all power storage batteries into the probe temperature list of the battery packs.
Optionally, after the step of obtaining the attribute parameter extremum at the current acquisition time and the number corresponding to the attribute parameter extremum as the reference data, the method further includes:
if the single body with the same battery voltage extreme value exists, the first appearing battery single body code is taken as the final single body voltage extreme value single body serial number;
or if the probes with the same extreme temperature values exist, taking the extreme temperature probe code number appearing for the first time as the extreme temperature probe code number of the final probe.
Optionally, the data acquisition method of the vehicle-mounted terminal further includes:
and after the reference voltage data or the reference temperature data is acquired, the reference voltage data or the reference temperature data is transferred and stored.
Optionally, after the step of comparing the reference data with the data to be verified, the method further includes:
and if the attribute parameter extremum and the serial number corresponding to the attribute parameter extremum at the current acquisition time are not equal, covering the attribute parameter extremum and the serial number corresponding to the attribute parameter extremum of the power storage battery uploaded to the CAN bus by taking the attribute parameter extremum and the serial number corresponding to the attribute parameter extremum at the current acquisition time as valid data.
Optionally, after the step of comparing the reference voltage data with the voltage data to be verified, the method further includes:
if the voltage values are not equal, the voltage extreme value of the power storage battery monomer and the serial number of the voltage extreme value monomer which are uploaded to the CAN bus are used as abnormal voltage data;
or if the temperature is not equal to the temperature value of the power storage battery probe uploaded to the CAN bus, the extreme temperature probe code number and the extreme temperature probe code number are used as abnormal temperature data;
and transferring the abnormal voltage data or the abnormal temperature data into a custom data item for subsequent reference and processing.
Optionally, the step of uploading valid data to the cloud includes:
the vehicle-mounted terminal processes the effective data according to the mode defined in GB/T32960-.
In addition, in order to achieve the above object, the present invention further provides a vehicle-mounted terminal data acquisition device, including: the data acquisition system comprises a memory, a processor and a vehicle-mounted terminal data acquisition program which is stored on the memory and can run on the processor, wherein the vehicle-mounted terminal data acquisition program realizes the steps of the vehicle-mounted terminal data acquisition method when being executed by the processor.
In addition, to achieve the above object, the present invention further provides a computer readable storage medium, on which a vehicle-mounted terminal data acquisition program is stored, which, when executed by a processor, implements the steps of the vehicle-mounted terminal data acquisition method as described above.
According to the data acquisition method, the data acquisition equipment and the computer-readable storage medium of the vehicle-mounted terminal, a single voltage extreme value and a single voltage extreme value serial number of a single battery and/or a probe temperature extreme value and an extreme value temperature probe code number of a single battery are/is acquired at the current acquisition time and are/is used as reference data through a single voltage list and/or a battery pack probe temperature list of a power storage battery from a battery management system, which are/is acquired at the current acquisition time; acquiring a single voltage extreme value and a single voltage extreme value serial number of a power storage battery and/or a single probe temperature extreme value and an extreme temperature probe code number which are uploaded to a CAN bus by a battery management system, wherein the single voltage extreme value and the single voltage extreme value serial number of the power storage battery and/or the single probe temperature extreme value and the extreme temperature probe code number which are uploaded to the CAN bus are acquired by a vehicle-mounted terminal at the last acquisition moment; will datum data with treat that the check data compares, if equal, then upload power battery monomer voltage extreme value and voltage extreme value monomer number on the CAN bus, and/or probe temperature extreme value and extreme value temperature probe code number are valid data, upload valid voltage data to high in the clouds, accomplish vehicle mounted terminal at the power battery monomer voltage list and/or the battery package probe temperature list of current collection moment, monomer voltage extreme value and voltage extreme value monomer number, and/or the data acquisition of probe temperature extreme value and extreme value temperature probe code number. Therefore, data from the battery management system can be acquired more accurately, and the problem that the data uploaded to the cloud end is inaccurate due to abnormal data is solved.
Drawings
Fig. 1 is a schematic terminal structure diagram of a hardware operating environment according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of an embodiment of a data acquisition method for a vehicle-mounted terminal according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
As shown in fig. 1, fig. 1 is a schematic terminal structure diagram of a hardware operating environment according to an embodiment of the present invention.
The operation equipment of the embodiment of the invention can be a PC, and can also be a mobile terminal equipment with a display function, such as a smart phone, a tablet computer, an electronic book reader, a portable computer and the like.
As shown in fig. 1, the operation device may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Optionally, the operation device may further include a camera, a Radio Frequency (RF) circuit, a sensor, an audio circuit, a WiFi module, and the like. Such as light sensors, motion sensors, and other sensors. In particular, the light sensor may include an ambient light sensor and a proximity sensor. As one of the motion sensors, the gravity acceleration sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when the mobile device is stationary, and can be used for applications (such as horizontal and vertical screen switching, related games, magnetometer attitude calibration) for recognizing the attitude of the mobile device, and related functions (such as pedometer and tapping) for vibration recognition; of course, the mobile operation device may also be configured with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, and the like, which are not described herein again.
Those skilled in the art will appreciate that the operational equipment configuration shown in FIG. 1 does not constitute a limitation of the operational equipment, and may include more or fewer components than shown, or some components in combination, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and an in-vehicle terminal data collection program.
In the operating device shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to call the in-vehicle terminal data collection program stored in the memory 1005, and perform the following operations:
acquiring an attribute parameter extreme value and a serial number corresponding to the attribute parameter extreme value at the current acquisition time as reference data through an attribute parameter list which is acquired by the vehicle-mounted terminal at the current acquisition time and is formed by the vehicle-mounted terminal group package;
acquiring an attribute parameter extreme value of the power storage battery uploaded to a CAN bus by a battery management system and a serial number corresponding to the attribute parameter extreme value as data to be checked, wherein the serial number corresponding to the attribute parameter extreme value and the attribute parameter extreme value of the power storage battery uploaded to the CAN bus is acquired by a vehicle-mounted terminal at the last acquisition time;
and comparing the reference data with the data to be checked, if the reference data is equal to the data to be checked, uploading the attribute parameter extreme value of the power storage battery uploaded to the CAN bus and the serial number corresponding to the attribute parameter extreme value to be effective data, uploading the effective data to the cloud, and completing data acquisition of the attribute parameter list, the attribute parameter extreme value and the serial number corresponding to the attribute parameter extreme value of the power storage battery of the vehicle-mounted terminal at the current acquisition moment.
Further, the processor 1001 may call the in-vehicle terminal data collection program stored in the memory 1005, and also perform the following operations:
the collected attribute parameters are from a single power storage battery voltage list, a single voltage extreme value and a single voltage extreme value serial number which are formed by a vehicle-mounted terminal group package,
or from a battery pack probe temperature list, a probe temperature extreme value and an extreme temperature probe code number formed by the vehicle-mounted terminal pack.
Further, the processor 1001 may call the in-vehicle terminal data collection program stored in the memory 1005, and also perform the following operations:
acquiring the single cell voltages of all power storage batteries from a battery management system acquired by a vehicle-mounted terminal at the current acquisition moment, and combining the single cell voltages of all the power storage batteries into a single voltage list;
or acquiring the probe temperatures of all battery packs of all power storage batteries from the battery management system acquired by the vehicle-mounted terminal at the current acquisition moment, and combining the probe temperatures of all battery packs of all power storage batteries into the probe temperature list of the battery packs.
Further, the processor 1001 may call the in-vehicle terminal data collection program stored in the memory 1005, and also perform the following operations:
if the single body with the same battery voltage extreme value exists, the first appearing battery single body code is taken as the final single body voltage extreme value single body serial number;
or if the probes with the same extreme temperature values exist, taking the extreme temperature probe code number appearing for the first time as the extreme temperature probe code number of the final probe.
Further, the processor 1001 may call the in-vehicle terminal data collection program stored in the memory 1005, and also perform the following operations:
and after the reference voltage data or the reference temperature data is acquired, the reference voltage data or the reference temperature data is transferred and stored.
Further, the processor 1001 may call the in-vehicle terminal data collection program stored in the memory 1005, and also perform the following operations:
and if the attribute parameter extremum and the serial number corresponding to the attribute parameter extremum at the current acquisition time are not equal, covering the attribute parameter extremum and the serial number corresponding to the attribute parameter extremum of the power storage battery uploaded to the CAN bus by taking the attribute parameter extremum and the serial number corresponding to the attribute parameter extremum at the current acquisition time as valid data.
Further, the processor 1001 may call the in-vehicle terminal data collection program stored in the memory 1005, and also perform the following operations:
if the voltage values are not equal, the voltage extreme value of the power storage battery monomer and the serial number of the voltage extreme value monomer which are uploaded to the CAN bus are used as abnormal voltage data;
or if the temperature is not equal to the temperature value of the power storage battery probe uploaded to the CAN bus, the extreme temperature probe code number and the extreme temperature probe code number are used as abnormal temperature data;
and transferring the abnormal voltage data or the abnormal temperature data into a custom data item for subsequent reference and processing.
Further, the processor 1001 may call the in-vehicle terminal data collection program stored in the memory 1005, and also perform the following operations:
the vehicle-mounted terminal processes the effective data according to the mode defined in GB/T32960-.
Referring to fig. 2, the present invention provides a vehicle-mounted terminal data acquisition method, including:
step S10, acquiring an attribute parameter extremum at the current acquisition time and a number corresponding to the attribute parameter extremum as reference data through an attribute parameter list formed by the vehicle-mounted terminal group package and acquired by the vehicle-mounted terminal at the current acquisition time.
The battery pack is composed of battery monomers, and each monomer has a corresponding serial number. The battery management system CAN send the voltage value of each single battery, the highest value of the voltage of each single battery, the lowest value of the voltage of each single battery and the serial number of each single battery corresponding to the voltage extreme value to the CAN network through the CAN message, and the CAN data are collected by the vehicle-mounted terminal. The method comprises the steps that voltage values of each single battery are combined into a list, a single voltage extreme value and a single voltage extreme value serial number of a current acquisition moment are included in the list, the single voltage extreme value and the single voltage extreme value serial number of the current acquisition moment are used as judgment references, and the single voltage extreme value serial number of the current acquisition moment are used as reference voltage data.
Optionally, the collected attribute parameters are from a power storage battery single voltage list formed by the vehicle-mounted terminal group package, a single voltage extreme value and a single voltage extreme value serial number,
or from a battery pack probe temperature list, a probe temperature extreme value and an extreme temperature probe code number formed by the vehicle-mounted terminal pack.
Similarly, the battery management system sends the data of the extreme temperature probe code corresponding to the battery pack probe temperature, the maximum value of the battery pack probe temperature, the minimum value of the battery pack probe temperature and the extreme temperature probe temperature extreme value of the battery pack probe to the CAN network through the CAN message, and the CAN data is collected by the vehicle-mounted terminal. The probe temperature of each battery pack is formed into a list, the list comprises a probe temperature extreme value and an extreme temperature probe code number at the current acquisition time, the probe temperature extreme value and the extreme temperature probe code number at the current acquisition time are used as judgment references, and the probe temperature extreme value and the extreme temperature probe code number at the current acquisition time are used as reference temperature data.
And step S20, acquiring the property parameter extreme value of the power storage battery uploaded to the CAN bus by the battery management system and the serial number corresponding to the property parameter extreme value as data to be checked, wherein the serial number corresponding to the property parameter extreme value of the power storage battery uploaded to the CAN bus is acquired by the vehicle-mounted terminal at the last acquisition time.
The current moment refers to the moment when the vehicle-mounted terminal collects data from the battery management system, the frequency of one-time collection of the vehicle-mounted terminal is kept for 1s, and the last collection moment refers to the moment when the vehicle-mounted terminal collects the data from the battery management system in the last 1s and the moment when the battery management system uploads CAN messages such as the single voltage extreme value, the single voltage extreme value serial number and the like of the power storage battery in the last 1 s. And the data processing is carried out on the same collected frame data packet, and at the current collection time, the single voltage extreme value and the single voltage extreme value serial number of the power storage battery, which are uploaded to the CAN bus by the battery management system at the last collection time, are used as the voltage data to be checked at the current collection time.
Similarly, the current time refers to the time when the vehicle-mounted terminal collects data from the battery management system, the frequency of once collection of the vehicle-mounted terminal is kept for 1s, and the last collection time refers to the time when the vehicle-mounted terminal collects the data from the battery management system in the last 1s and the time when the battery management system uploads CAN messages such as the power storage battery probe temperature extreme value, the extreme value temperature probe code number and the like in the last 1 s. And the data processing is carried out aiming at the same collected frame data packet, and at the current collection time, the temperature extreme value and the extreme value temperature probe code number of the power storage battery which is uploaded to the CAN bus by the battery management system at the last collection time are used as the temperature data to be checked at the current collection time.
And step S30, comparing the reference data with the data to be checked, if the reference data and the data to be checked are equal, uploading the attribute parameter extremum of the power storage battery uploaded to the CAN bus and the number corresponding to the attribute parameter extremum to be effective data, uploading the effective data to the cloud, and completing data acquisition of the attribute parameter list, the attribute parameter extremum and the number corresponding to the attribute parameter extremum of the power storage battery of the vehicle-mounted terminal at the current acquisition time.
Reference voltage data: the single voltage extreme value at the current acquisition moment, the single voltage extreme value serial number and the voltage data to be checked: and comparing the voltage extreme value of the power storage battery monomer and the voltage extreme value monomer serial number uploaded to the CAN bus at the last acquisition time, and if the voltage extreme value of the power storage battery monomer and the voltage extreme value monomer serial number are equal, the matching results are consistent, and effective voltage data are uploaded to the cloud.
Similarly, reference temperature data: the probe temperature extreme value, extreme temperature probe code number and the temperature data to be checked at the current acquisition moment are as follows: and comparing the extreme temperature value of the power storage battery probe and the extreme temperature probe code number uploaded to the CAN bus at the last acquisition time, and if the extreme temperature value of the power storage battery probe and the extreme temperature probe code number are equal, the matching results are consistent, and effective temperature data are uploaded to the cloud.
In this embodiment, the cell voltage data and/or the battery pack probe temperature that the battery management system sends to the CAN network is problematic, the problem is that the highest value of the cell voltage and the lowest value of the cell voltage and/or the highest value of the probe temperature of the battery pack and the lowest value of the probe temperature of the battery pack which are sent to the CAN network at the moment t are actually data at the moment (t-1), the actual true accurate battery cell voltage extreme value and/or probe temperature extreme value at the time t is not matched with the battery cell voltage extreme value and/or probe temperature extreme value in the battery cell voltage list and/or the battery pack probe temperature list sent by the battery management system to the CAN network at the time t (namely the current acquisition time), and the data at the time of t-time transmission (t-1) adopts a inherent transmission period in the CAN message transmission method. Therefore, the maximum value of the voltage of the battery cell and the minimum value of the voltage of the battery cell and/or the maximum value of the temperature of the probe of the battery pack and the minimum value of the temperature of the probe of the battery pack at the moment t are directly adopted to be sent to the CAN network at the moment t, and the maximum value of the voltage of the battery cell and/or the maximum value of the temperature of the probe of the battery pack are/is used as the extreme value of the voltage of the battery cell and/or the extreme value of the temperature of the probe of the battery pack at the moment t, so that the extreme value of the voltage of the battery cell and/or the extreme value of the temperature of the probe of the battery pack are/is different from the actual extreme value of the voltage of the battery cell and/or the actual extreme value of the temperature of the probe of the battery pack at the moment t, and the data uploaded to the cloud end are inaccurate. Therefore, the reference voltage data and the voltage data to be checked and/or the reference temperature data and the temperature data to be checked are compared, the final effective data, namely accurate data, is judged and obtained, the data from the battery management system is obtained more accurately, and the problem that the data uploaded to the cloud end are inaccurate due to abnormal data is avoided. Meanwhile, if the battery monomer voltage highest value and the battery monomer voltage lowest value and/or the battery pack probe temperature highest value and/or the battery pack probe temperature lowest value which are/is sent to the CAN network at the moment (t-1) are/is modified or lost in the transmission process, the battery monomer voltage highest value and the battery pack probe temperature lowest value CAN be found and covered in time in comparison at the moment t, and the battery related data uploaded to the cloud end are guaranteed to be safe and correct and are matched with the acquisition moment.
Optionally, the data acquisition method of the vehicle-mounted terminal further includes:
acquiring the single cell voltages of all power storage batteries from a battery management system acquired by a vehicle-mounted terminal at the current acquisition moment, and combining the single cell voltages of all the power storage batteries into a single voltage list;
or acquiring the probe temperatures of all battery packs of all power storage batteries from the battery management system acquired by the vehicle-mounted terminal at the current acquisition moment, and combining the probe temperatures of all battery packs of all power storage batteries into the probe temperature list of the battery packs.
After the vehicle-mounted terminal collects the voltages of the single batteries of all the power storage batteries from the battery management system at the current collection moment, the voltages of the single batteries of all the power storage batteries are combined into a single voltage list, and meanwhile, the lowest value and the highest value of the voltages of the single batteries of all the power storage batteries are used as a single voltage extreme value.
And after the vehicle-mounted terminal collects the probe temperatures of all battery packs of all power storage batteries from the battery management system at the current collection moment, combining the probe temperatures of all the battery packs of all the power storage batteries into a probe temperature list of the battery packs, and simultaneously taking the lowest value and the highest value of the probe temperatures of all the battery packs of all the power storage batteries as probe temperature extreme values.
Optionally, after the step of obtaining the attribute parameter extremum at the current acquisition time and the number corresponding to the attribute parameter extremum as the reference data, the method further includes:
if the single body with the same battery voltage extreme value exists, the first appearing battery single body code is taken as the final single body voltage extreme value single body serial number;
or if the probes with the same extreme temperature values exist, taking the extreme temperature probe code number appearing for the first time as the extreme temperature probe code number of the final probe.
After the monomer voltage extreme value and the monomer number of the voltage extreme value at the current acquisition moment are obtained, if the monomers with the same battery voltage extreme value exist, the code number of the battery monomer with the battery voltage extreme value appearing for the first time is used as the final code number of the battery monomer for comparison, or the code number of the battery monomer with the battery voltage extreme value appearing for the last time is used as the final code number of the battery monomer for comparison.
Optionally, the data acquisition method of the vehicle-mounted terminal further includes:
and after the reference voltage data or the reference temperature data is acquired, the reference voltage data or the reference temperature data is transferred and stored.
After the reference voltage data or the reference temperature data are acquired, the reference voltage data or the reference temperature data are transferred and stored for later-stage calling and debugging.
Optionally, after the step of comparing the reference data with the data to be verified, the method further includes:
and if the attribute parameter extremum and the serial number corresponding to the attribute parameter extremum at the current acquisition time are not equal, covering the attribute parameter extremum and the serial number corresponding to the attribute parameter extremum of the power storage battery uploaded to the CAN bus by taking the attribute parameter extremum and the serial number corresponding to the attribute parameter extremum at the current acquisition time as valid data.
After comparing the reference voltage data: the single voltage extreme value at the current acquisition moment, the single voltage extreme value serial number and the voltage data to be checked: after the voltage extreme value of the power storage battery monomer and the serial number of the voltage extreme value monomer which are uploaded to the CAN bus at the last acquisition time are compared, if the reference voltage data are not equal to the voltage data to be checked, the reference voltage data are covered and replaced with the voltage data to be checked, and the reference voltage data are used as effective data and uploaded to the cloud.
Optionally, after the step of comparing the reference voltage data with the voltage data to be verified, the method further includes:
if the voltage values are not equal, the voltage extreme value of the power storage battery monomer and the serial number of the voltage extreme value monomer which are uploaded to the CAN bus are used as abnormal voltage data;
or if the temperature is not equal to the temperature value of the power storage battery probe uploaded to the CAN bus, the extreme temperature probe code number and the extreme temperature probe code number are used as abnormal temperature data;
and transferring the abnormal voltage data or the abnormal temperature data into a custom data item for subsequent reference and processing.
After the reference voltage data is compared with the voltage data to be verified, the voltage data to be verified which is uploaded to the CAN bus and is not equal to the reference voltage data is used as abnormal voltage data and is used as a self-defined data item of the dump for the subsequent reference and processing of developers, and the situation that the voltage data to be verified which is not equal to the reference voltage data cannot be found back due to covering operation is avoided.
Similarly, after the reference temperature data is compared with the temperature data to be verified, the temperature data to be verified which is uploaded to the CAN bus and is not equal to the reference temperature data is used as abnormal temperature data and is also used as a transferred self-defined data item for subsequent reference and processing of developers, and the problem that the temperature data to be verified which is not equal to the reference temperature data cannot be found back due to covering operation is avoided.
Optionally, the step of uploading valid data to the cloud includes:
the vehicle-mounted terminal processes the effective data according to the mode defined in GB/T32960-.
The vehicle-mounted terminal is used as a standard part of regulations of the electric vehicle, the most basic function is to collect and report data from each ECU of the vehicle, and the national standard data is defined by specific reference to GB/T32960-2016 technical Specification of electric vehicle remote service and management System.
To assist in understanding the above-described steps of the data collection of the in-vehicle terminal, an explanation will now be given by way of an example below. Taking voltage as an example:
note: the parenthesis data items in the following bands are data items which must be uploaded by the vehicle-mounted terminal of the pure electric vehicle specified in GB/T32960-,
[ list of cell voltage values ], [ maximum cell voltage value ], [ maximum voltage cell code ], [ minimum cell voltage value ], [ minimum voltage cell code ],
whereas the following data items (distinguished from the actual data item names, used herein for example only) are enterprise-defined collection & upload data items, regulations do not make relevant requirements,
CellVol_1、CellVol_2、CellVol_3......CellVol_n；MaxCellVol、MaxCellVolPos、MinCelVol、MinCelVolPos。
that is, the cell voltages that the BMS having n cells sends to the CAN bus are these data items: CellVol _1, CellVol _2, CellVol _3.. the CellVol _ n, in addition to the cell voltages, also sends MaxCellVol (the highest value of the cell voltage), MaxCellVolPos (the cell number corresponding to the highest value of the cell voltage), mincellvol (the lowest value of the cell voltage), and mincellvolpos (the cell number corresponding to the lowest value of the cell voltage). Namely: voltage-related data that the BMS sends to the CAN bus include (in practice, many of which are illustrated here) CellVol _1, CellVol _2, CellVol _3.. CellVol _ n; MaxCellVol, MaxCellVolPos, MinCelVol, MinCelVolPos.
The purpose of the vehicle-mounted terminal is to collect the user-defined data on the CAN bus, and package the voltages of the battery monomers into an independent data item according to the serial number: the method includes the steps of [ cell voltage value list ], theoretically and simultaneously directly assigning values corresponding to MaxCellVol, MaxCellVols, MinCelVolPos and MinCelVolPos to corresponding [ cell voltage maximum value ], [ cell voltage minimum value ] and [ cell voltage minimum value ]. Due to the aforementioned problem of extreme value data issued by the BMS, the MaxCellVol, MaxCellVolPos, MinCelVol, MinCelVolPos data collected by the vehicle-mounted terminal comes in and goes out with [ cell voltage value list ] formed by the group package. Therefore, the data based on the [ single battery voltage value list ] is processed to obtain [ the highest value of the single battery voltage ], [ the code of the single battery with the highest voltage ], [ the lowest value of the single battery voltage ], [ the code of the single battery with the lowest voltage ] matched with the [ single battery voltage value list ].
After this step is completed, it is actually equivalent to directly sending the reference data [ cell voltage value list ] as the extreme value data item of the corresponding national standard: [ cell voltage maximum value ], [ cell voltage maximum code ], [ cell voltage minimum value ], and [ cell voltage minimum code ].
So far, the requirements of national standard and regulation are met, but the method still has the step of not processing, namely the extreme value data item defined by the enterprise: MaxCellVol, MaxCellVolPos, MinCelVol, MinCelVolPos.
The above data are raw voltage extreme data from the BMS, and if the vehicle-mounted terminal does not process these data, there is a problem of consistency, and also affects subsequent analysis by engineers. Therefore, there is a step of data validity judgment.
The judgment is that national standard terms [ the highest value of the voltage of the battery monomer ], [ the code of the highest voltage battery monomer ], [ the lowest value of the voltage of the battery monomer ], [ the code of the lowest voltage battery monomer ] and enterprise self-defined terms MaxCelVol, MaxCelVolPos, MinCelVolPos are comparison objects, if the two parts are consistent, a judgment result of True can be obtained and printed on a system log of a vehicle-mounted terminal, so that the tracing is convenient; if the two parties are not consistent, a False result is obtained, and the numerical values of national standard item data [ the highest value of the battery monomer voltage ], [ the highest-voltage battery monomer code ], [ the lowest value of the battery monomer voltage ], [ the lowest-voltage battery monomer code ] are assigned to enterprise self-defining items MaxCellVol, MaxCellVolPos, MinCelVolPos, and the judgment result is printed to a system log.
For example, at a certain collection time, the vehicle-mounted terminal collects the single voltage values from the BMS to combine the single battery voltage lists [3.31,3.41,3.29,3.30], the collected single voltage extreme values from the BMS are 3.40 and 3.29 respectively, and the single voltage extreme values do not match the data in the [ list ]. Therefore, the vehicle-mounted terminal makes a strategy, and the correct extreme value of the single voltage is obtained by taking the numerical value of the [ list ] as a reference.
Through the process, the voltage-related data are processed, but the original data MaxCellVol, MaxCellVolPos, MinCelVol and MinCelVolPos are processed, and the processed data are slightly different from the most original data sent by the BMS and collected by the vehicle-mounted terminal. Therefore, the data items are directly transferred and recorded into another data item as the most original data transfer record before being processed, so that the data items can be referred to by developers.
In addition, an embodiment of the present invention further provides a vehicle-mounted terminal data acquisition device, where the vehicle-mounted terminal data acquisition device includes: the data acquisition system comprises a memory, a processor and a vehicle-mounted terminal data acquisition program which is stored on the memory and can run on the processor, wherein the vehicle-mounted terminal data acquisition program realizes the steps of the vehicle-mounted terminal data acquisition method when being executed by the processor.
In addition, an embodiment of the present invention further provides a computer-readable storage medium, where a vehicle-mounted terminal data acquisition program is stored on the computer-readable storage medium, and when executed by a processor, the vehicle-mounted terminal data acquisition program implements the steps of the vehicle-mounted terminal data acquisition method described above.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A data acquisition method of a vehicle-mounted terminal is characterized by comprising the following steps:
acquiring an attribute parameter extreme value and a serial number corresponding to the attribute parameter extreme value at the current acquisition time as reference data through an attribute parameter list which is acquired by the vehicle-mounted terminal at the current acquisition time and is formed by the vehicle-mounted terminal group package;
acquiring an attribute parameter extreme value of the power storage battery uploaded to a CAN bus by a battery management system and a serial number corresponding to the attribute parameter extreme value as data to be checked, wherein the serial number corresponding to the attribute parameter extreme value and the attribute parameter extreme value of the power storage battery uploaded to the CAN bus is acquired by a vehicle-mounted terminal at the last acquisition time;
and comparing the reference data with the data to be checked, if the reference data is equal to the data to be checked, uploading the attribute parameter extreme value of the power storage battery uploaded to the CAN bus and the serial number corresponding to the attribute parameter extreme value to be effective data, uploading the effective data to the cloud, and completing data acquisition of the attribute parameter list, the attribute parameter extreme value and the serial number corresponding to the attribute parameter extreme value of the power storage battery of the vehicle-mounted terminal at the current acquisition moment.
2. The vehicle-mounted terminal data acquisition method according to claim 1,
the collected attribute parameters are from a single power storage battery voltage list, a single voltage extreme value and a single voltage extreme value serial number which are formed by a vehicle-mounted terminal group package,
or from a battery pack probe temperature list, a probe temperature extreme value and an extreme temperature probe code number formed by the vehicle-mounted terminal pack.
3. The vehicle-mounted terminal data acquisition method according to claim 2, further comprising:
acquiring the single cell voltages of all power storage batteries from a battery management system acquired by a vehicle-mounted terminal at the current acquisition moment, and combining the single cell voltages of all the power storage batteries into a single voltage list;
or acquiring the probe temperatures of all battery packs of all power storage batteries from the battery management system acquired by the vehicle-mounted terminal at the current acquisition moment, and combining the probe temperatures of all battery packs of all power storage batteries into the probe temperature list of the battery packs.
4. The method for acquiring the data of the vehicle-mounted terminal according to claim 2, wherein after the step of acquiring the attribute parameter extremum at the current acquisition time and the number corresponding to the attribute parameter extremum as the reference data, the method further comprises:
if the single body with the same battery voltage extreme value exists, the first appearing battery single body code is taken as the final single body voltage extreme value single body serial number;
or if the probes with the same extreme temperature values exist, taking the extreme temperature probe code number appearing for the first time as the extreme temperature probe code number of the final probe.
5. The vehicle-mounted terminal data acquisition method according to claim 4, further comprising:
and after the reference voltage data or the reference temperature data is acquired, the reference voltage data or the reference temperature data is transferred and stored.
6. The vehicle-mounted terminal data acquisition method according to claim 1, wherein after the step of comparing the reference data with the data to be verified, further comprising:
and if the attribute parameter extremum and the serial number corresponding to the attribute parameter extremum at the current acquisition time are not equal, covering the attribute parameter extremum and the serial number corresponding to the attribute parameter extremum of the power storage battery uploaded to the CAN bus by taking the attribute parameter extremum and the serial number corresponding to the attribute parameter extremum at the current acquisition time as valid data.
7. The vehicle-mounted terminal data acquisition method according to claim 2, wherein after the step of comparing the reference voltage data with the voltage data to be verified, further comprising:
if the voltage values are not equal, the voltage extreme value of the power storage battery monomer and the serial number of the voltage extreme value monomer which are uploaded to the CAN bus are used as abnormal voltage data;
or if the temperature is not equal to the temperature value of the power storage battery probe uploaded to the CAN bus, the extreme temperature probe code number and the extreme temperature probe code number are used as abnormal temperature data;
and transferring the abnormal voltage data or the abnormal temperature data into a custom data item for subsequent reference and processing.
8. The data acquisition method of the vehicle-mounted terminal according to claim 1, wherein the step of uploading the valid data to a cloud comprises:
the vehicle-mounted terminal processes the effective data according to the mode defined in GB/T32960-.
9. The vehicle-mounted terminal data acquisition device is characterized by comprising: a memory, a processor and a vehicle terminal data acquisition program stored on the memory and operable on the processor, the vehicle terminal data acquisition program when executed by the processor implementing the steps of the vehicle terminal data acquisition method according to any one of claims 1 to 8.
10. A computer-readable storage medium, characterized in that a vehicle-mounted terminal data acquisition program is stored on the computer-readable storage medium, which when executed by a processor implements the steps of the vehicle-mounted terminal data acquisition method according to any one of claims 1 to 8.
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