CN202841169U - A kind of IEBus bus analysis device - Google Patents

Abstract

The utility model discloses an IEBus bus analysis device. The IEBus bus analysis device is characterized in that the IEBus bus analysis device comprises a driving part, a decoding part and a display and processing part; the driving part is connected with an IEBus bus and is composed of an IEBus bus driving chip and a probe; the driving chip converts an original waveform signal to a signal suitable for decoding and transmits the signal to the decoding part; the decoding part is a bus decoding part which is composed of a microprocessor and the peripheral circuit, decodes a bus signal acquired by the driving part by programming an MCU module, and sends converted digital contents and all kinds of analysis results to the display and processing part; and the display and data processing part receives all kinds of data uploaded by the driving part and displays the bus data through software processing. The IEBus bus analysis device provided by the utility model can directly observe the data and can carry out storing, playback and other processing on the data, which is greatly convenient to the data analysis of the IEBus bus and improves the development and testing efficiency of a bus device.

Description

A kind of IEBus bus analysis device

technical field

The utility model relates to the technical field of analysis and detection of vehicle-mounted equipment, in particular to an IEBus analysis device.

Background technique

With the increasing degree of automobile electronics, the information exchange between various automobile devices is more frequent, and the use of automobile bus technology is becoming more and more extensive. IEBus is a bus widely used in Japanese cars. It is a local bus that connects multiple equipment units such as audio system, air conditioning system, and rear control. It is necessary to analyze and test the IEBus in multiple links such as unit development, system debugging, and testing.

At present, there is no bus analyzer that supports IEBus in the market. When analyzing the IEBus bus during development, the waveform is generally observed through an oscilloscope or a logic analyzer. This method can only see the waveform, but cannot observe the data of both parties in communication. Debugging is not intuitive, nor is it possible to analyze data issues.

Contents of the invention

The purpose of the utility model is to solve the deficiencies of the prior art and provide a data that can be directly observed, and can be stored, played back and other processing of the data, which greatly facilitates the data analysis of the IEBus bus and improves the IEBus bus analysis device for bus device development and test efficiency.

The utility model adopts the following technical solution to achieve the above object: a kind of IEBus bus analyzing device, it is characterized in that, it comprises driving part, decoding part and display and processing part, and driving part is connected with IEBus bus, is driven by IEBus bus Composed of a chip and a probe, the probe can be connected to any point in the bus network to collect the waveform signal in the bus network, and the driver chip converts the original waveform signal into a signal suitable for decoding and transmits it to the decoding part; the decoding part is composed of The bus decoding part composed of a microprocessor (MCU) and its peripheral circuits can decode the bus signal collected by the driving part by programming the MCU module, and convert the bus waveform into digital according to the protocol definition. At the same time, the analyzed bus The data is restored to a data frame, and number and time stamp are added to facilitate the data processing of the display and processing part, and intelligent analysis can be performed on bus waveform integrity, response, verification, data error, etc., and the converted The digital content and various analysis results are sent to the display and processing part together; the display and data processing part receives various data uploaded by the drive part, and after processing by software, the bus data is displayed intuitively.

As a further illustration of the above solution, the data transmission mode between the microprocessor of the decoding part and the display and data processing part is serial port, USB or wireless communication, and the data can also be transmitted to PDA and other portable devices.

The display and data processing part is composed of a data processing program on the PC.

The display and data processing part adopts an embedded display platform to realize bus analysis and display directly without a PC, increase or decrease button input or touch screen input, so as to facilitate the operation of various bus analysis items.

The beneficial effect that the utility model can reach by adopting above-mentioned technical solution is:

The utility model utilizes the powerful data processing and storage capabilities of PC hardware, and can expand various analysis and processing capabilities by writing software, so that the analysis capabilities of the device are more intelligent and the use is more convenient, and it can realize the following functions:

1. Sorting and displaying the data frames according to the number and time stamp, not only can see the data content of the bus communication in real time, but also can observe the content of the bus communication at any time before or after.

2. Display the bus analysis results of the decoding part, and give different displays for data verification errors, length errors, and incomplete data, so as to facilitate the distinction of different errors.

3. Further identify the data, and identify the special data (such as address, length, etc.) in the data frame with different colors to facilitate viewing and analysis of the protocol.

4. Save the collected communication data, which can be used for any period of time or any number of communication content, which is convenient for testing and troubleshooting.

5. You can filter the data address, length, etc., and only display the filtered data content.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of the utility model;

Fig. 3 is the structural representation of another embodiment of the present utility model;

Fig. 4 is a schematic structural view of another embodiment of the present invention.

Description of reference signs: 1. Drive part 2. Decoding part 3. Processing part 4. IEBus bus 5. PDA and other portable devices 6. Embedded display platform 7. Input buttons.

Detailed ways

Example 1

As shown in Figure 1, a kind of IEBus bus analyzing device of the present utility model, it comprises driving part 1, decoding part 2 and display and processing part 3, and driving part 1 is connected with IEBus bus 4, is driven chip and probe by IEBus bus Composition, the probe is connected to any point in the bus network, and the waveform signal in the bus network can be collected, and the driver chip converts the original waveform signal into a signal suitable for decoding, and transmits it to the decoding part; the decoding part 2 is composed of a microprocessor The bus decoding part composed of (MCU) and its peripheral circuits can decode the bus signal collected by the driving part by programming the MCU module, convert the bus waveform into digital according to the protocol definition, and at the same time restore the analyzed bus data to Data frame, plus number and time stamp, to facilitate data processing in the display and processing part, and intelligently analyze bus waveform integrity, response, verification, data errors, etc., and convert the digital content and Various analysis results are transmitted to the display and processing part through the serial port; the display and data processing part 3 is composed of a data processing program on the PC. , the bus data can be displayed intuitively.

During use, the waveform on the bus network is collected through the IEBus bus driver circuit, and then transmitted to the microprocessor (MCU), and the waveform is decoded into data through specific programming, and the waveform is initially analyzed and verified, and then the The converted data is transmitted to the PC and the display unit, and the display unit displays the data in real time, thereby realizing the function of converting the bus waveform into a digital display, and realizing various processing functions of the bus data through software programming, such as data storage, screening, Various analysis functions such as sorting and data identification.

In addition, this device can also play back the data, and send the saved data to the bus in a simulated manner, which can simulate the bus communication environment of the saved data, and its data flow is shown in Figure 2. The PC sends the stored data to the MCU through the serial port, and the MCU encodes the received data into the data format of the IEBus bus, and converts its waveform into an IEBus waveform through the driving part, so as to simulate the original bus data environment.

Example 2

As shown in Figure 3, the difference between this embodiment and the above-mentioned embodiment is that the data transmission mode between the microprocessor of the decoding part 2 and the PC is changed to USB, or the wireless communication mode, and the data can also be transmitted to PDAs and other portable devices5.

Example 3

As shown in Figure 4, the difference between this embodiment and the above-mentioned embodiment is that the display and data processing part is replaced by an embedded display platform 6, which can directly perform bus analysis and display without a PC, increase or decrease Input button 7 or touch screen input to facilitate the operation of various bus analysis items.

The above is only the preferred embodiment of the present utility model, it should be pointed out that the following functions can also be added through improvement on the basis of the device: 1, the function of the data processing program can be further increased, such as increasing the automatic test function, making it according to the agreement The protocol automatically tests each device on the bus, and finally feeds back and displays the test results; 2. Add the MCU decoding software automatic upgrade function to the data processing program to facilitate subsequent software upgrades. For those skilled in the art, without departing from the inventive concept of the present utility model, some modifications and improvements can be made, and these all belong to the protection scope of the present utility model.

Claims (1)

1. IEBus bus analysis device, it is characterized in that, it comprises drive part, decoded portion and demonstration and processing section, drive part is connected with the IEBus bus, be to be consisted of by IEBus bus driver chip and probe, probe is accessed any point in the bus network, get final product the waveform signal in the data acquisition bus network, drive chip and the original waveform signal is converted to the signal that is fit to decoding, be transferred to decoded portion; Decoded portion, it is the bus encoding/decoding part that is consisted of by microprocessor and its peripheral circuit, by to the MCU module programming, the bus signals that drive part collects is decoded, and the digital content after the conversion and various analysis result are passed to demonstration and processing section together; Show and data processing section, receive the various data that drive part is uploaded.

2 .A kind of IEBus bus analysis device according to claim 1 is characterized in that, the employing of data transfer mode is serial ports, USB or wireless communication mode between the microprocessor of described decoded portion and demonstration and the data processing section.

3 .A kind of IEBus bus analysis device according to claim 1 is characterized in that described demonstration and data processing section adopt an embedded display platform, sets up the input of key-press input or touch-screen.

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