CN210090948U - TTCAN bus data acquisition device - Google Patents
TTCAN bus data acquisition device Download PDFInfo
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- CN210090948U CN210090948U CN201920697634.5U CN201920697634U CN210090948U CN 210090948 U CN210090948 U CN 210090948U CN 201920697634 U CN201920697634 U CN 201920697634U CN 210090948 U CN210090948 U CN 210090948U
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Abstract
To the extensive TTCAN bus that adopts of vehicle control system, for the demand that satisfies data acquisition, the utility model provides a TTCAN bus data acquisition device for regularly receive and save the data on the TTCAN bus, and in good time will data download to the server like the PC, supply the PC to carry out data analysis, provide support for the fault analysis and the maintenance of vehicle.
Description
Technical Field
The utility model belongs to the information communication technology application for the application development of TTCAN bus relates to a TTCAN bus data acquisition device especially, is particularly useful for new energy automobile's vehicle information management system.
Background
The TTCAN bus is a novel improved CAN bus, CAN meet the requirement of vehicle control on the continuous increase of real-time performance and transmission message density, and is widely applied. Meanwhile, data acquisition and application are very wide, and bus data need to be acquired and recorded in a vehicle information management system and downloaded for analysis. Therefore, it is necessary to develop a device for collecting TTCAN bus data.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a TTCAN bus data collection system for regularly receive and save the data on the TTCAN bus, and in good time will data download to the server, its characterized in that, this TTCAN bus data collection system includes following hardware circuit part: microcontroller, power supply circuit, USB interface circuit, TTCAN module, NANDFLASH memory circuit, ferroelectric memory circuit, real-time clock circuit and watchdog circuit, wherein
The microcontroller is used for controlling the power supply circuit, the USB interface circuit, the TTCAN module, the NANDFLASH storage circuit, the ferroelectric storage circuit, the real-time clock circuit and the watchdog circuit;
the power supply circuit is used for providing power required by normal work of the microcontroller, the USB interface circuit, the TTCAN module, the NANDFLASH storage circuit, the ferroelectric storage circuit, the real-time clock circuit and the watchdog circuit;
the USB interface circuit is used for connecting with a server to realize a communication interface between the TTCAN bus data acquisition device and the server;
the TTCAN module is used for being connected with a TTCAN bus to realize a communication interface between the TTCAN bus data acquisition device and the TTCAN bus;
the NANDFLASH storage circuit is used for storing the collected data on the TTCAN bus;
the ferroelectric storage circuit is used for storing various operation parameter data and caching other data;
the real-time clock circuit is used for generating system time so as to be used for time marking of data recording;
the watchdog circuit is used for monitoring the system, and when an abnormality occurs, the system is restored to a normal working state through resetting.
Preferably, the TTCAN bus data acquisition device further comprises a software part, wherein the software part comprises upper computer software and single chip microcomputer embedded software, the upper computer software comprises a driving program and data downloading software, and the single chip microcomputer embedded software is used for completing control and data processing of each hardware circuit.
Preferably, the TTCAN bus data collection device further includes a housing for installation and protection of the hardware circuit portion.
Preferably, the TTCAN module is connected to the microcontroller through an SPI interface.
Preferably, the real-time clock circuit also maintains its clock through a battery backup.
Preferably, the microcontroller is realized by adopting an MC9S12XEP100 singlechip of a singlechip FreeScale company, a parallel bus interface of the singlechip is connected with the USB interface circuit, the NandFlash storage circuit and the ferroelectric storage circuit, an SPI interface of the singlechip is connected with the TTCAN module, and an I2C interface of the singlechip is connected with the real-time clock circuit.
The utility model provides a data acquisition device can regularly accept the data on the TTCAN bus to save FLASH memory, download the server from the USB interface when needing data, like the PC, supply the PC to carry out data analysis, provide support for the failure analysis and the maintenance of vehicle.
Drawings
Fig. 1 is a schematic diagram of a hardware circuit structure of the TTCAN bus data collection device provided by the present invention.
Detailed Description
To the extensive TTCAN bus that adopts of vehicle control system, for satisfying data acquisition's demand, the utility model provides a TTCAN bus data acquisition device for regularly receive and save the data on the TTCAN bus, and in good time will data download to the server. The device comprises a hardware circuit, software and a shell.
As shown in fig. 1, the hardware circuit portion mainly includes a microcontroller, a power supply circuit, a USB interface circuit, a TTCAN module, a NANDFLASH memory circuit, a ferroelectric memory circuit, a real-time clock circuit, and a watchdog circuit.
A microcontroller: for controlling the functional circuits.
The power supply circuit comprises: the power supply for the normal operation of each functional circuit is mainly provided.
The USB interface circuit: and the TTCAN bus data acquisition device is connected with a server such as a PC (personal computer) to realize a communication interface between the TTCAN bus data acquisition device and the PC. The communication between the PC and the microcontroller can be completed, commands and data from the PC are sent to the microcontroller, and the data of the microcontroller is uploaded to the PC.
A TTCAN module: and the TTCAN bus is connected to realize a communication interface between the TTCAN bus data acquisition device and the TTCAN bus. In a preferred embodiment, the TTCAN module is connected to the microcontroller through the SPI interface and enables communication between the TTCAN bus data collection device and the TTCAN bus.
NANDFLASH memory circuit: the device is used for storing the collected data on the TTCAN bus.
A ferroelectric memory circuit: for storing various operating parameter data and for caching other data.
Real-time clock circuit: a time stamp for generating a system time for data recording; in a preferred embodiment, the real time clock circuit also maintains its clock through a battery backup.
The watchdog circuit: the system is used for monitoring the system, and when the abnormity occurs, the system is restored to the normal working state through resetting.
In a preferred embodiment, the microcontroller is implemented by an MC9S12XEP100 single chip microcomputer of FreeScale, a parallel bus interface of the single chip microcomputer is connected with the USB interface circuit, the NandFlash memory circuit and the ferroelectric memory circuit, an SPI interface of the single chip microcomputer is connected with the TTCAN module, and an I2C interface of the single chip microcomputer is connected with the real-time clock circuit.
The software part of the TTCAN bus data acquisition device comprises two parts of upper computer software and single chip microcomputer embedded software. The upper computer software mainly comprises a driving program and data downloading software, the data downloading software is used for downloading data to a PC, and the downloaded data is stored in a file and used for data analysis. The embedded software of the single chip mainly completes the control and data processing of each module.
The shell part of the TTCAN bus data acquisition device is used for mounting and protecting a circuit board and is processed by aluminum alloy materials. The maximum external dimension of the shell is as follows: length: 270 mm; width: 143 mm; the height is 60 mm.
In a preferred embodiment, the main parameters of the TTCAN bus data collection device are as follows.
TTCAN communication bus: 2 paths of the signal meet the technical requirement of TTCAN.
A FLASH memory: 1024 mbytes.
Ferroelectric memory: 128K bytes.
A data downloading interface: full-speed USB, compatible USB 2.0.
A system clock: real time clock + battery backup.
And (3) system monitoring: a separate watchdog.
The utility model provides a TTCAN bus data collection system, as an automobile-used data acquisition recorder of a money, it can receive TTCAN bus data and save these data, can follow the USB interface and download data to the PC when needs data, can seek vehicle fault reason through the analytic data, provides fine support for the maintenance of equipment.
Finally, it should be noted that: the above embodiment only illustrates one technical solution of the present disclosure, and although the present disclosure is described in detail by the accompanying drawings and the like, it should be understood by those of ordinary skill in the art that: modifications of some embodiments or equivalents of some of the technical features of the present disclosure may be made without departing from the design concept of the present disclosure, and similar solutions may still fall within the scope of the present disclosure.
Claims (5)
1. A TTCAN bus data acquisition device is used for receiving and storing data on a TTCAN bus at regular time and downloading the data to a server at the right time, and is characterized by comprising the following hardware circuit parts: microcontroller, power supply circuit, USB interface circuit, TTCAN module, NANDFLASH memory circuit, ferroelectric memory circuit, real-time clock circuit and watchdog circuit, wherein
The microcontroller is used for controlling the power supply circuit, the USB interface circuit, the TTCAN module, the NANDFLASH storage circuit, the ferroelectric storage circuit, the real-time clock circuit and the watchdog circuit;
the power supply circuit is used for providing power required by normal work of the microcontroller, the USB interface circuit, the TTCAN module, the NANDFLASH storage circuit, the ferroelectric storage circuit, the real-time clock circuit and the watchdog circuit;
the USB interface circuit is used for connecting with a server to realize a communication interface between the TTCAN bus data acquisition device and the server;
the TTCAN module is used for being connected with a TTCAN bus to realize a communication interface between the TTCAN bus data acquisition device and the TTCAN bus;
the NANDFLASH storage circuit is used for storing the collected data on the TTCAN bus;
the ferroelectric storage circuit is used for storing various operation parameter data and caching the data;
the real-time clock circuit is used for generating system time so as to be used for time marking of data recording;
the watchdog circuit is used for monitoring the system, and when an abnormality occurs, the system is restored to a normal working state through resetting.
2. The TTCAN bus data collection device according to claim 1, further comprising a housing for mounting and protecting the hardware circuit portion.
3. The TTCAN bus data acquisition device of claim 1, wherein the TTCAN module is connected to the microcontroller via an SPI interface.
4. The TTCAN bus data collection device of claim 1, wherein the real-time clock circuit further maintains its clock through a battery backup.
5. The TTCAN bus data acquisition device according to claim 1, wherein the microcontroller is implemented by a MC9S12XEP100 singlechip of FreeSchale, the singlechip having parallel bus interfaces connected to the USB interface circuit, the NandFlash memory circuit and the ferroelectric memory circuit, the singlechip having SPI interface connected to the TTCAN module, and the singlechip having I2C interface connected to the real-time clock circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920697634.5U CN210090948U (en) | 2019-05-15 | 2019-05-15 | TTCAN bus data acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920697634.5U CN210090948U (en) | 2019-05-15 | 2019-05-15 | TTCAN bus data acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210090948U true CN210090948U (en) | 2020-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920697634.5U Active CN210090948U (en) | 2019-05-15 | 2019-05-15 | TTCAN bus data acquisition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210090948U (en) |
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2019
- 2019-05-15 CN CN201920697634.5U patent/CN210090948U/en active Active
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