CN104616467B - A kind of braking energy recovery system for electric vehicle collecting method - Google Patents
A kind of braking energy recovery system for electric vehicle collecting method Download PDFInfo
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- CN104616467B CN104616467B CN201410634914.3A CN201410634914A CN104616467B CN 104616467 B CN104616467 B CN 104616467B CN 201410634914 A CN201410634914 A CN 201410634914A CN 104616467 B CN104616467 B CN 104616467B
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Abstract
The invention discloses a kind of braking energy recovery system for electric vehicle collecting method, detect send by arbitrary network interface or receive data when, the data of the transmission or reception are sampled, motor bus output current when can flexibly gather braking energy of electric automobiles recovery, super capacitor terminal voltage, electric automobile vehicle wheel rotational speed, DC DC circuit dutycycles.The present invention also has the following real-time improved, include gathered data, and real-time diagnosis wrong data filters out the wrong data transmitted because slave computer is disturbed automatically, and every group of data are designed with distinctive mark position in order to avoid malfunctioning；Every group of data all leave expansion interface, convenient to be docked with other data；The present invention can also realize that gathered data carry out wavy curve Real time displaying and offline reduction, be more convenient compared with first importing data to the conventional method of analysis waveform curvilinear motion situation again effective.
Description
Technical field
The present invention relates to the data acquisition in electric automobile field and network communication, and in particular to a kind of electric vehicle brake
Energy-recuperation system collecting method.
Background technology
Mainly there are following five kinds of schemes when gathering braking energy of electric automobiles data collection and storage at present：
The first scheme is that the interface of data collecting system is single：It is merely capable of adopting slave computer one kind interface progress data
Collection, it is impossible to suitable for the communication interface of multiple types slave computer.
Second scheme is constant duration collection and storage：Data collecting system is simple to adopt at regular intervals
Collect a real time data, and these data are all preserved.
The third scheme is constant duration collection, but only stores over the data of certain threshold values：This scheme is to second
Kind scheme is improved, simple to these data after data collecting system gathers a real time data at regular intervals
Analysis, does not do mask filter processing.
4th kind of scheme is gathered in a manner of data outage, but the not ID number of mark data：This scheme is to second,
Scheme is improved in three, but every group of data are without the ID number of oneself, it is possible to causes to participate in and the uncorrelated data of experiment.
Fifth version is the complexity of gathered data system：Traditional acquisition system is edited by C++ to be formed, and only
It could only be run under V C++ editing environments.Not only software runtime environment is harsh, and program it is complicated it is inflexible be also easy to malfunction,
Without effect of visualization.
The content of the invention
In view of this, the present invention provides a kind of braking energy recovery system for electric vehicle collecting method, to solve profit
The shortcomings that existing during with prior art gathered data.
Realize that technical scheme is as follows：
A kind of braking energy recovery system for electric vehicle collecting method, this method is in data collecting system and each data
Communication connection is established between generation device, data collecting system is by communicating connection from each data generating apparatus gathered data；Bag
Include following steps：
Step 1, host computer data collecting system is to motor bus output current, super capacitor terminal voltage, electric automobile
Wheel speed, DC-DC circuit duty cycle signals are initialized；
Step 2, host computer data collecting system carries out communication interface scanning, both can be to receiving after communication interface successful connection
Data are gathered with sending data in a manner of interrupting；
Step 3, first by data buffer storage in temporary space before host computer data collecting system gathered data；
Step 4, judge that host computer data collecting system automatic dynamic monitoring spatial cache data whether there is interference data,
Data are disturbed if actively being deleted in the presence of if；
Step 5, remove after interference data whether computing computer buffer area data length by slave computer passes one group of number again
According to the integral multiple of length, if non-integral multiple, acquisition system will actively delete non-integral multiple data；
Step 6, after buffer area data fit above-mentioned condition, data collecting system will take out slave computer from buffer area successively
The data of one group of data length are uploaded, carry out the caching of second of data；
Step 7, acquisition system just will really meet the data of requirement of experiment after interference data processing and mask filter
Computer is stored in, docks data with image processing techniques while data storage, realizes the waveform displaying of data；
Step 8, final stored data can dock with image processing techniques again after experiment terminates, and realize data
Waveform again displaying, TXT forms can also be exported, facilitate the processing of other softwares；
Step 9, while data receiver, data collecting system can send data to slave computer under control of the user
Instruction, to realize test and control to lower computer hardware system.
Further, communication interface has UART, SPI, I2C, USB, CAN in the step 2, to meet all kinds of slave computer interfaces
Data acquisition.
Further, multiple communication interface routines in the step 2 all in parallel mode write upper computer software, it is necessary to certain
Software is understood automatically scanning and obtained during individual interface.
Further, in the step 6, second of time slack is carried out in data, data collecting system proceeds by every group of data
The lookup of flag bit, the i.e. identification to every group of data ID number, if finding the ID number that non-slave computer is identified, data collecting system will
This group of data are actively deleted, if finding the ID number that all non-slave computer of all data is identified, data collecting system will stop data
Collection, and mistake is reported to user.
Further, the collection of more data is realized by increasing slave computer sensor and a/d converter in the step 9.
Further, described during step 1-9 is performed, the analog signal that sensor gathers is converted to numeral by slave computer
Signal, then be connected with communication interface with host computer and gather related data；Receive data and occur with sending only a kind of situation of data
Can excitation data acquisition system.
Further, in addition to by host computer the other sensors coefficients such as electric current, voltage, DC-DC dutycycles are directly changed
To meet the experiment under vehicle difference operating mode.
The present invention action function and technique effect have it is following some：
1) monitor for send data and receive data all meet UART, SPI, I2C, USB, CAN protocol standard
Network interface.
2) detect send by any network interface or receive data when, i.e. data to the transmission or reception
Carry out interrupt mode sampling (there are data to produce interruption to sample at once, rather than equal angle sampling).
3) mark a part in host computer memory space in advance and be used as samples storage space, number is received or sent as collection
According to spatial cache, data are processed further and handled to alleviate computer.
4) with the presence or absence of interference data, (so-called interference data are the data that gather far beyond estimating to dynamic monitoring spatial cache
Calculation value) and active deletion interference data.
5) data set is sent in units of group and constant duration transmits data to acquisition system, but every group of data are necessary
Possess the ID number of oneself, to ensure that acquisition system quick and precisely filters out wrong data.
6) data after treatment are stored in the space that computer individually distributes in time, and with graph processing technique pair
Connect, be synchronously presented to user.
7) packet has often been sent, i.e., has sent and interrupts to the host computer, to notify that it is corresponding that the host computer is read
Memory headroom, obtain the packet of upload.
8) can be obtained automatically with unconfined increase number of sensors, host computer under the conditions of lower computer hardware conditions permit
Sampling channel number is taken to adapt to the collection of more experimental datas.
9) host computer can directly change the coefficient of acquisition system various kinds of sensors to adapt to experiment condition.
10) data that acquisition system is gathered can directly carry out docking with image processing techniques again, with reduction experiment
When image scene, other software can also be imported and analyzed.
Brief description of the drawings
Fig. 1 is the braking energy of electric automobiles data collection acquisition system hardware circuit schematic diagram of the present invention；
Fig. 2 is the braking energy of electric automobiles data collection acquisition system host computer procedure flowage structure signal of the present invention
Figure；
The braking energy of electric automobiles data collection acquisition system PC control panel that Fig. 3 is the present invention is in kind initial stage
Figure；
The braking energy of electric automobiles data collection acquisition system that Fig. 4 is the present invention is in kind upper machine display panel initial stage
Figure.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is combined first：The signal that braking recovery controller MCU is gathered has vehicle wheel rotational speed, automobile signal for faster, automobile
Brake signal, observation circuit temperature signal, bus current signal, super-capacitor voltage signal, slave computer braking recovery controller
MCU sensor sends the analog signal received to upper electromechanics after AD conversion is data signal with communication interface
Brain；Every group of data of slave computer transmission have the ID number of oneself；It is at a fixed time interval that slave computer, which transmits data,；Slave computer
A message is sent to ensure whether communication is normal to host computer every the set time.
Secondly Fig. 2 is combined：After 1. program starts, host computer data collecting system initializes to therein parameter；
2. secondly host computer data collecting system progress communication interface scanning (meets UART, SPI, I2C, USB, the standard network of CAN protocol
Network interface)；3. both (this side can be gathered in a manner of interrupting with sending data to receiving data after communication interface successful connection
Formula is to save the fast-response that computer resource realizes gathered data again)；4. before host computer data collecting system gathered data
First data buffer storage being processed further and handled to data to alleviate computer in temporary space；5. host computer data acquisition
With the presence or absence of interference data, (meaning interference data are the data that gather far beyond estimating to system automatic dynamic monitoring spatial cache data
Calculation value), and actively delete interference data；6. whether computing computer buffer area data length is the next again after removing interference data
Machine passes the integral multiple of one group of data length, if non-integral multiple, acquisition system will actively delete non-integral multiple data；7. wait to cache
After area's data fit above-mentioned condition, data collecting system will take out the number of slave computer one group of data length of upload from buffer area successively
According to the caching of second of data of progress；8. data carry out second of caching again, data collecting system proceeds by every group
The lookup of Data Labels position, the i.e. identification to every group of data ID number, if finding the ID number that non-slave computer is identified, data acquisition system
System will actively delete this group of data, if finding the ID number that all non-slave computer of all data is identified, data collecting system will stop
Data acquisition, and mistake is reported to user；Data collecting system can send collection wrong data warning to user, and move back in advance
Go out the collection of data.9. acquisition system is just by the data of positive true coincidence requirement of experiment after interference data processing and mask filter
Computer is stored in, docks data with image processing techniques while data storage, realizes the waveform displaying of data；10. most
Data stored by end can dock with image processing techniques again after experiment terminates, and realize the displaying of waveform again of data,
TXT forms can also be exported, facilitate the processing of other softwares.While data receiver, data collecting system can with
Data command is sent to slave computer under the control at family, to realize test and control to lower computer hardware system.
Further in conjunction with Fig. 3,4：Fig. 3,4 for the present invention model at initial stage in kind, do further that exploitation can be with reference to this model
Realize repertoire as described herein.Braking energy of electric automobiles data collection acquisition software as shown in Figure 3,4, system include
1：Main window；2：Serial ports automatically scanning；3：Baud rate is chosen；4：Current coefficient；：5：Voltage coefficient；6：Change Current Voltage system
Number；7：Open serial ports；8：Reset；9：Wave shape playback；10：Count and reset；11：Waveform is shown；12：Empty transmission；13：16 enter
System is sent；14：Send data；15：Send data counter；16：Send area；17：Preserve data；18：Negative window；19：Waveform
Time counting；20：The longitudinal axis；21：Bus current；22：Boost current；23：Electric capacity terminal voltage；24：Dutycycle；25：Rotating speed.Open
After software, the available serial ports above software meeting automatically scanning computer, and be shown in the window frame marked as 2；User is according to certainly
The baud rate selection that own slave computer is set is marked as 3 drop-down frame datas；Click on No. 6 buttons and Current Voltage parameter is set, click on 14
Number button sends predetermined duty cycle data (user is depending on oneself test situation)；No. 7 buttons of click begin to data and adopted
Collection, while No. 7 buttons are opened, the negative window marked as 18 ejects simultaneously, bears window i.e. waveform display window, this window
The size of oneself can be automatically adjusted according to the screen size of computer, to realize maximum visual effect；After data acquisition is complete
Again tap on No. 7 buttons, you can stop data receiver, can now click on the playback again that No. 11 buttons realize waveform；Click on
No. 17 buttons can preserve data in computer.Fig. 4 is negative window, and this window transverse axis is the wave recording time, and the longitudinal axis is 4 data
Ordinate.
The present invention can implement function such as：Automatically scanning slave computer communication interface type simultaneously communicates therewith；Directly upper
The each sensor ratio coefficient of slave computer is changed to adapt to the braking energy of electric automobiles recovery experiment of more multi-state on the machine of position；It is real
When observing and controlling to slave computer；Real-time diagnosis wrong data and active shield filtering；Data are done the encryption process, and every group of data possess certainly
Own ID number；Untreatment data is stored in temporary buffer, to accelerate the computer speed of service；Data after processing are in preservation
Docked simultaneously with image processing techniques, experimental data is presented to user by the moment；System listen to slave computer sensor error or
User can be fed back to after experimental data error and actively cancels experimental data collection；Experiment can also be to institute's gathered data after terminating
Waveform is carried out to play back again；Wavy curve can be amplified diminution by shortcut；Final experimental data is with TXT text formattings
It is stored in computer；When closing Data Collection Software, software can automatically save all arrange parameters of window, in case next time opens
Software inputs from new；Fig. 4 is the braking energy of electric automobiles data collection display window with initial stage system acquisition.
In said procedure implementation procedure, software can receive slave computer data or send data to slave computer,
So user and slave computer realize " interaction "；Further design can be done to acquisition system, software can after the completion of pending data collection
So that energy recovery efficiency is directly calculated and displayed；Further design can be done to acquisition system, designs a set of monitoring system.It is real
It is excessive that the process of testing is possible to occur line current, voltage, can so damage some components, the sensor of this set monitoring system is visited
It can immediately be alarmed after measuring these potential danger, and dangerous circuit is actively cut off by relay.
Above-mentioned embodiment is used for illustrating the present invention, rather than limits the invention, the present invention's
In spirit and scope of the claims, to any modifications and changes of the invention made, protection model of the invention is both fallen within
Enclose.
Claims (7)
1. a kind of braking energy recovery system for electric vehicle collecting method, this method is produced in data collecting system and each data
Communication connection is established between generating apparatus, data collecting system is by communicating connection from each data generating apparatus gathered data；It is special
Sign is, comprises the following steps：
Step 1, host computer data collecting system is to motor bus output current, super capacitor terminal voltage, electric automobile rotation
Speed, DC-DC circuit duty cycle signals are initialized；
Step 2, host computer data collecting system carries out communication interface scanning, both can be to receiving data after communication interface successful connection
Gathered with sending data in a manner of interrupting；
Step 3, first by data buffer storage in temporary space before host computer data collecting system gathered data；
Step 4, host computer data collecting system automatic dynamic monitoring spatial cache data are judged with the presence or absence of interference data, if depositing
Then actively deleting interference data；
Step 5, remove after interference data computing computer buffer area data length again and whether one group of data are passed by slave computer and grow
The integral multiple of degree, if non-integral multiple, acquisition system will actively delete non-integral multiple data；
Step 6, after buffer area data fit above-mentioned condition, data collecting system will take out slave computer from buffer area successively and upload
The data of one group of data length, carry out the caching of second of data；
Step 7, acquisition system just will really meet the data storage of requirement of experiment after interference data processing and mask filter
In computer, data are docked with image processing techniques while data storage, realize the waveform displaying of data；
Step 8, final stored data can dock with image processing techniques again after experiment terminates, and realize data again
Secondary waveform displaying, can also export TXT forms, facilitate the processing of other softwares；
Step 9, while data receiver, data collecting system can send data to slave computer under control of the user and refer to
Order, to realize test and control to lower computer hardware system.
2. braking energy recovery system for electric vehicle collecting method according to claim 1, it is characterised in that described
Communication interface has UART, SPI, I2C, USB, CAN in step 2, to meet the data acquisition of all kinds of slave computer interfaces.
3. braking energy recovery system for electric vehicle collecting method according to claim 1, it is characterised in that described
Multiple communication interface routines in step 2 all write upper computer software, it is necessary to can be from during software during some interface in parallel mode
It is dynamic to scan and obtain.
4. braking energy recovery system for electric vehicle collecting method according to claim 1, it is characterised in that described
In step 6, second of time slack is carried out in data, data collecting system proceeds by the lookup of every group of Data Labels position, i.e., to every
The identification of group data ID number, if finding the ID number that non-slave computer is identified, data collecting system will actively delete this group of data, if
It was found that the ID number that all non-slave computer of all data is identified, data collecting system will stop data acquisition, and mistake is reported to
User.
5. braking energy recovery system for electric vehicle collecting method according to claim 1, it is characterised in that described
In step 9 collection of more data is realized by increasing slave computer sensor and a/d converter.
6. braking energy recovery system for electric vehicle collecting method according to claim 1, it is characterised in that described
During step 1-9 is performed, vehicle wheel rotational speed that slave computer gathers sensor, automobile signal for faster, automobile brake signal, prison
Slowdown monitoring circuit temperature signal, bus current signal, the analog signal of super-capacitor voltage signal are converted to data signal, then with communication
Interface is connected with host computer and gathers related data；Receive data with send a kind of data only situation appearance can excitation data adopt
Collecting system.
7. braking energy recovery system for electric vehicle collecting method according to claim 1, it is characterised in that also wrap
Include and the other sensors coefficients such as electric current, voltage, DC-DC dutycycles are directly changed by host computer to meet under vehicle difference operating mode
Experiment.
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| CN106596133A (en) * | 2016-12-27 | 2017-04-26 | 广州汽车集团股份有限公司 | Design verification test system for braking energy recovery system and control method thereof |
| CN108052477A (en) * | 2017-11-27 | 2018-05-18 | 成都华力创通科技有限公司 | The method for eliminating the interference of RS422 serial ports |
| CN112881027B (en) * | 2019-11-29 | 2023-07-11 | 比亚迪股份有限公司 | Method, device and system for determining automobile braking energy recovery efficiency |
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Application publication date: 20150513 Assignee: XUZHOU XCMG AUTOMOTIVE MANUFACTURING CO., LTD. Assignor: Jiangsu University Contract record no.: 2017320000082 Denomination of invention: Electric vehicle braking energy recovery system data acquisition method License type: Exclusive License Record date: 20170314 |
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