CN207895270U - A kind of off-line type inertia measurement data acquisition device - Google Patents
A kind of off-line type inertia measurement data acquisition device Download PDFInfo
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- CN207895270U CN207895270U CN201820067874.2U CN201820067874U CN207895270U CN 207895270 U CN207895270 U CN 207895270U CN 201820067874 U CN201820067874 U CN 201820067874U CN 207895270 U CN207895270 U CN 207895270U
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Abstract
The utility model discloses a kind of off-line type inertia measurement data acquisition device, including shell and the circuit board being placed in the shell, the embedded microprocessor of installation on circuit boards, what is connect with embedded microprocessor is used to be inserted into SD card to preserve the SD card module of data；Embedded microprocessor is separately connected relay for being powered or powering off for Inertial Measurement Unit, is converted to Transistor-Transistor Logic level to realize the SN75173 chips of the communication of the Inertial Measurement Unit and embedded microprocessor for the RS422 level of the Inertial Measurement Unit, and the Transistor-Transistor Logic level for the embedded microprocessor realizes the MAX232 chips between the embedded microprocessor and host computer into row data communication to RS232 level conversions；There is charactron on case panel.The utility model off-line type inertia measurement data acquisition device can single machine use, also can two-shipper it is synchronous or be used alternatingly, to reduce the requirement to test environment.
Description
Technical field
The utility model is related to embedded system data acquisition technique fields, and in particular to a kind of off-line type inertia measurement number
According to harvester.
Background technology
In the applications such as the test under travel condition of vehicle, online inertia measurement completes number by computer software
According to acquisition overall process, it is easier to realize.But for some need to be answered in oversize vehicle of driving outdoor mounted measuring device etc.
With special occasions, it has not been convenient to carry out on-line measurement, or even cannot achieve in the case where lacking tester's necessity working space
On-line measurement.
In specific construction practice, complicated, various data processing and analytic function are needed, completely by embedded hardware system
System replaces computer software, and exploitation general-purpose system difficulty is larger, and exploitation dedicated system benefit is relatively low, and therefore, exploitation uses
By offline mode gathered data, in computer software carry out later data processing and test analysis scheme, have
Certain meaning.
Utility model content
The problem of the purpose of this utility model is for online mode limitation inertia measurement application scenario, and provide it is a kind of from
Wire type inertia measurement data acquisition device, the device are based on embedded microprocessor technology, realize the off-line type number of test process
According to acquisition, in computer software data processing and test analysis basic data is provided.
Technical solution is used by realize the purpose of this utility model：
A kind of off-line type inertia measurement data acquisition device, including shell and be placed in the shell circuit board, peace
Embedded microprocessor on the circuit board, what is connect with the embedded microprocessor is used to be inserted into SD card to preserve
The SD card module of data；The embedded microprocessor is separately connected the relay for being powered or powering off for Inertial Measurement Unit
Device, for the Inertial Measurement Unit RS422 level to Transistor-Transistor Logic level convert with realize the Inertial Measurement Unit with it is embedded
The SN75173 chips of the communication of microprocessor, and for the embedded microprocessor Transistor-Transistor Logic level to RS232 level turn
It changes to realize the MAX232 chips between the embedded microprocessor and host computer into row data communication；It is described embedding to further include
Enter microsever relay, SN75173 chips, MAX232 chips, SD card module and the Inertial Measurement Unit and work is provided
Make the lithium battery module of electricity consumption；There is charactron on the panel of the shell, is connect with the embedded microprocessor, for testing
The number triggered is shown in the configured parameter information of preceding display, test process.
The lithium battery module is rechargeable lithium battery.
The data-interface for the serial port data line that grafting is connect with host computer is useful on the shell, for being switched on or switched off
The power switch of the general supply of off-line type inertia measurement data acquisition device, the lithium electricity to charge for lithium battery for being inserted into power cord
Pond charging interface, the triggering interface for being inserted into trigger signal cable, the SD card interface for being inserted into SD card.
The data-interface uses 9 needle serial port Interface Terminal of D types.
The utility model off-line type inertia measurement data acquisition device can be used with single machine, can also two-shipper synchronization or alternating
It uses, to reduce the requirement to test environment, improves the application to engineering practice value of test data.
Description of the drawings
Fig. 1 is connect when being the off-line type inertia measurement data acquisition device write-in configuration parameter of the utility model with computer
Schematic diagram；
Fig. 2 is the appearance schematic diagram of the off-line type inertia measurement data acquisition device of the utility model；
Fig. 3 is the internal structure schematic diagram of the off-line type inertia measurement data acquisition device of the utility model.
Fig. 4 is the work flow diagram of the off-line type inertia measurement data acquisition device of the utility model.
In figure：1. off-line type inertia measurement data acquisition device, 2. computers, 3. shells, 4.3 Digital sum pipes, 5. data
Interface, 6. power switches, 7. lithium battery charging interfaces, 8. triggering interfaces, 9.SD card interfaces, 10. circuit boards, 11. insertions decline
Processor, 12. relays, 13.SN75173 chips, 14.MAX232 chips, 15.SD card modules, 16. lithium battery modules, 17. strings
Mouth data line.
Specific implementation mode
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that this place
The specific embodiment of description is only used to explain the utility model, is not used to limit the utility model.
Shown in Figure 1, in the utility model, which is to use embedded system
System exploitation, slave computer is served as when data acquire, the portable meter for serving as host computer can be coupled by serial port data line 17
The computer 2 of calculation machine or other test platforms realizes the function of receiving host computer parameter configuration, then under the cooperation of triggering,
Different files is saved in respectively to the data of the application scenarios such as vehicle difference test phase, to acquire after data are passed
Computer is transported to be handled in software systems.This off-line type inertia measurement data acquisition device can be used with single machine, also may be used
With two-shipper synchronization or it is used alternatingly.
Shown in referring to figure 2-3, a kind of off-line type inertia measurement data acquisition device, hardware includes：
Shell 3 and the circuit board 10 being placed in the shell, the embedded microprocessor on the circuit board
11, what is connect with the embedded microprocessor is used to be inserted into SD card to preserve the SD card module 15 of data；The insertion declines
Processor be separately connected for for Inertial Measurement Unit be powered or power off relay 12, for the Inertial Measurement Unit
RS422 level is converted to Transistor-Transistor Logic level to realize the SN75173 cores of the communication of the Inertial Measurement Unit and embedded microprocessor
Piece 13, and Transistor-Transistor Logic level for the embedded microprocessor realize the embedded microprocessor to RS232 level conversions
Into the MAX232 chips 14 of row data communication between device and host computer；Further include for the embedded microprocessor relay,
SN75173 chips, MAX232 chips, SD card module and the Inertial Measurement Unit provide the lithium battery module of work electricity consumption
16, there are 3 Digital sum pipes 4 on the panel of the shell, is connect with the embedded microprocessor, it is configured for display before testing
Parameter information, show the number triggered in test process.
Embedded-type ARM microprocessor or embedded MIPS microprocessors may be used in the embedded microprocessor,
Or DSP embedded microprocessor etc..
In the utility model, the shell 3 is to be used to support, install and accommodate off-line type inertia measurement data acquisition dress
The electronic component or module set, may be mounted on holder and use.
It should be noted that in the utility model, the Inertial Measurement Unit for inertia measurement is also installed on shell
It is interior, but it is not belonging to the component part of off-line type inertia measurement data acquisition device.
The embedded microprocessor, relay, SN75173 chips, MAX232 chips, SD card module, lithium battery mould
Block etc. is welded on circuit board, to form the internal structure of the off-line type inertia measurement data acquisition device.It is described
Circuit board is mainly used for controlling measuring unit start and stop and the measurement of technical parameter and calculating, and the embedded microprocessor is for connecing
It receives the simultaneously parameter of cached configuration and controls gatherer process accordingly, control data are saved in the SD card of SD card module insertion.Relay
It is that Inertial Measurement Unit is powered or powers off that device, which is used for the parameter according to configuration under embedded microprocessor instruction,.SN75173 cores
Piece is converted for Inertial Measurement Unit RS422 level to Transistor-Transistor Logic level, realizes that Inertial Measurement Unit is communicated with embedded microprocessor
Function.MAX232 chips for embedded microprocessor Transistor-Transistor Logic level to RS232 level conversions, realize embedded microprocessor with
Data communicate between host computer.
The lithium battery module is used for as embedded microprocessor, relay, SN75173 chips, MAX232 chips, SD card
Module and the Inertial Measurement Unit being installed in shell provide 11 volts and 5 volts of power supply.
In order to facilitate use, in the utility model, the lithium battery module is rechargeable lithium battery.
Specifically, being useful for the data-interface 5 for the serial port data line that grafting is connect with host computer on the shell 3, being used for
It is switched on or switched off the power switch 6 of the general supply of off-line type inertia measurement data acquisition device, is lithium electricity for being inserted into power cord
Pond charging lithium battery charging interface 7, for be inserted into trigger signal cable with receive and respond trigger signal triggering interface 8,
SD card interface 9 for being inserted into SD card.
Specifically, the data-interface 5 can be used for connecting by serial port data line using 9 needle serial port Interface Terminal of D types
Position machine can also realize that two off-line type inertia measurement data are adopted to receive the parameter configuration of host computer transmission after Function Extension
Communication between acquisition means.
Certainly, in order to realize the function control needs of embedded microprocessor, programming is wanted inside embedded microprocessor
Corresponding software control procedure is mainly used for receiving configuration parameter before testing, sends display information to charactron, and test process connects
Trigger signal is received, instruction is sent out to relay according to the configuration parameter information of storage, reads Inertial Measurement Unit data, in SD card
Middle establishment file and deposit data and closing file etc..
The software control procedure can be divided into parameter configuration module, digital tube display module, triggering response by function
Module, relay control module, file operation module, data read module, data storage module.
Wherein, parameter configuration module is used to receive the parameter configuration of computer software transmission.Parameter format can be
" 0xAA55xxyyzzoo ", wherein " 0xAA55 " is data frame head, system judges that the data configure for actual parameter by this orders
Format is enabled, " xx " represents single machine or Dual OMU Servers Mode, and " 00 " represents single cpu mode, and " 01 " represents two-shipper host mode, " 02 " generation
Table two-shipper slave mode." yy " represents the switching cycle (being indicated with minute) of Dual OMU Servers Mode, is mended by 0 for the 1st when being less than 10 minutes
Together (such as 01 indicate that switching cycle is 1 minute), data invalid under single cpu mode." zz " is test event reserved place, by having
The computer software of body application system defines." oo " is trigger action rule position, the number for providing intermediate triggering.
Digital tube display module, i.e. charactron driver, it would be desirable to which the data of display are converted to hard to digital tube bottom layer
The code of part operation.Display information for converting key message to 3 Digital sum pipes.Wherein, the 1st is always mono-/bis-machine
Pattern shows that position, single cpu mode show " 0 " that two-shipper host mode is shown " 1 ", and two-shipper slave mode is shown " 2 "；2nd and the 3rd
Position is that switching cycle shows that position, Dual OMU Servers Mode show that switching cycle, single cpu mode show "-", be before testing in test process
Triggering times show position, show the triggering times information received.
Respond module is triggered, in the case where test is divided into different phase, trigger signal is received, makes relay according to shifting to an earlier date
The rule action of setting.By taking vehicle testing as an example, triggering manually can represent start-up operation triggering, test triggering, data successively
Trigger collection, test end trigger, power cut-off triggering etc., centre triggering refers to test triggering, data trigger collection, test terminate
Triggering, i.e., intermediate triggering times are 3.
Relay control module exports on-off model for embedded microprocessor to relay module, and control inertia is surveyed
The on/off for measuring unit, to realize the conversion for export/not exporting measurement data.
Data read module reads the data of each Measurement channel of Inertial Measurement Unit for embedded microprocessor.
The data read are saved in data file by file operation module for embedded microprocessor, file
Naming rule is set by computer software.
Data storage module, i.e. SD card driver, for the hardware operation to the SD card bottom.
In the following, being described as follows to the data of the utility model acquisition implementation process by taking vehicle testing as an example：
After test vehicle meets test condition, off-line type inertia measurement data acquisition device 1 is mounted on test position, is led to
It crosses serial port data line and is connected to portable computer or the computer 2 of other test platforms, open off-line type inertia measurement data
The power switch 6 of harvester 1, which enters, waits for configuration status, is adopted to off-line type inertia measurement data by computer software
Acquisition means 1 send parameter configuration, and after the completion of parameter configuration, 3 Digital sum pipe display parameters configuration informations disconnect the connection with computer
It connects, system enters waiting triggering state.
Start-up operation triggering command is sent out while starting vehicle, and 3 Digital sum pipes show test process information, the 2nd, 3
" 0 ", " 1 " are shown respectively.Off-line type inertia measurement data acquisition device 1 starts dynamic according to parameter configuration control relay
Make, is powered or powers off for Inertial Measurement Unit.Under Inertial Measurement Unit energized state, reads data and preserve and open to SD card
In file, when Inertial Measurement Unit is converted to off-position by being powered, file is closed after it will read data and preserved.It is every later
Being connected to a triggering command, then numeral method number increases by 1, and opens new file and preserve data.It is touched receiving power cut-off
Relay is disconnected after sending instructions, and file is closed after it will read data and preserved.Disconnect off-line type inertia measurement data acquisition dress
Set 1 general supply.
After parking, SD card is taken out by the SD card interface 9 on shell 3, data are read in the software systems of computer 2, into
Row post-processing and test analysis.
The utility model has the advantages that：
1. installation weight is light, small, installation site is flexible, easy for installation.
2. can be used with single machine, can also two-shipper it is synchronous or be used alternatingly, reduce the requirement to test environment, improve test
The application to engineering practice of data is worth, and extends the applicable situation of inertia measurement.
3. by offline mode gathered data, later data processing and test analysis are carried out in computer software,
The function of dedicated system is realized convenient for structure general-purpose system.
4. the flexibility that trigger device enhancing is used is used in combination.
The above is only the preferred embodiment of the utility model, it is noted that for the general of the art
For logical technical staff, without departing from the principle of this utility model, several improvements and modifications can also be made, these change
The scope of protection of the utility model is also should be regarded as into retouching.
Claims (4)
1. a kind of off-line type inertia measurement data acquisition device, which is characterized in that including：
Shell and it is placed in the circuit board in the shell, the embedded microprocessor on the circuit board, and it is described
Embedded microprocessor connection is used to be inserted into SD card to preserve the SD card module of data；The embedded microprocessor connects respectively
Connect for for Inertial Measurement Unit be powered or power off relay, for the Inertial Measurement Unit RS422 level to TTL electricity
The SN75173 chips of the communication to realize the Inertial Measurement Unit and embedded microprocessor are changed in flat turn, and for described
The Transistor-Transistor Logic level of embedded microprocessor realized to RS232 level conversions between the embedded microprocessor and host computer into
The MAX232 chips of row data communication；Further include for the embedded microprocessor relay, SN75173 chips, MAX232 cores
Piece, SD card module and the Inertial Measurement Unit provide the lithium battery module of work electricity consumption；There is number on the panel of the shell
Code pipe, connect with the embedded microprocessor, is shown in the parameter information configured for display before testing, test process
The number of triggering.
2. off-line type inertia measurement data acquisition device as described in claim 1, which is characterized in that the lithium battery module is can
Charged lithium cells.
3. off-line type inertia measurement data acquisition device as claimed in claim 2, which is characterized in that be useful for inserting on the shell
Connect the data-interface for the serial port data line being connect with host computer, for being switched on or switched off off-line type inertia measurement data acquisition device
General supply power switch, for be inserted into power cord be lithium battery charging lithium battery charging interface, for be inserted into triggering letter
The triggering interface of number cable, the SD card interface for being inserted into SD card.
4. off-line type inertia measurement data acquisition device as claimed in claim 3, which is characterized in that the data-interface uses D
9 needle serial port Interface Terminal of type.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820067874.2U CN207895270U (en) | 2018-01-16 | 2018-01-16 | A kind of off-line type inertia measurement data acquisition device |
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| CN201820067874.2U CN207895270U (en) | 2018-01-16 | 2018-01-16 | A kind of off-line type inertia measurement data acquisition device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108052045A (en) * | 2018-01-16 | 2018-05-18 | 中国人民解放军陆军军事交通学院 | A kind of off-line type inertia measurement data acquisition device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108052045A (en) * | 2018-01-16 | 2018-05-18 | 中国人民解放军陆军军事交通学院 | A kind of off-line type inertia measurement data acquisition device |
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| CB03 | Change of inventor or designer information |
Inventor after: Li Yulan Inventor after: Xiao Yu Inventor after: Li Haiyang Inventor before: Li Yulan Inventor before: Xiao Yu Inventor before: Ye Peng Inventor before: Li Haiyang |