CN202770890U - Oscilloscope supporting a plurality of serial communication protocol decoding functions - Google Patents
Oscilloscope supporting a plurality of serial communication protocol decoding functions Download PDFInfo
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- CN202770890U CN202770890U CN201220462744.1U CN201220462744U CN202770890U CN 202770890 U CN202770890 U CN 202770890U CN 201220462744 U CN201220462744 U CN 201220462744U CN 202770890 U CN202770890 U CN 202770890U
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Abstract
The present utility model discloses an oscilloscope supporting a plurality of serial communication protocol decoding functions. The oscilloscope comprises a central processor, a display unit connected with an output end of the central processor, and a signal input end of the central processor is connected with a signal output end of a simulation signal conditioning unit through a serial bus processing unit. The serial bus processing unit independent of the CPU is adopted, parallel execution of waveform acquisition and serial decoding are realized in the serial bus processing unit, the data frame capture rate is high; and data frame information can be precisely corresponding to original waveform data.
Description
Technical field
The utility model relates to oscillograph, especially relates to the oscillograph of supporting multiple serial communication protocol decoding function.
Background technology
Oscillograph is a kind of general electric signal measurement instrument, and it can show intuitively to the user shape information of measured signal etc.The oscillograph function of releasing in the market not only has been confined to show wave pattern to the user, perhaps to some more intuitively waveform character (such as frequency of rise time, burst width, cyclical signal etc.) carry out automated analysis.Increasing oscillograph production firm, beginning has added the in-depth analysis function to waveform character in its product, generally all have the spectrum analysis function on basis such as modern digital oscilloscope.
Current, the electric signal of generally using roughly is divided into two kinds: a kind of is simulating signal, and for this oscillograph, the function of the above-mentioned traditional oscillograph of mentioning is more convenient and helpful; But, for another signal, i.e. digital signal, traditional oscillograph can't directly demonstrate the coded message of waveform, and coded message is normally very important for the commissioning staff of digital signal.So present high-end oscillograph has been introduced triggering and the decoding function based on the digital signal of particular communication agreement gradually.But because be subject to the restriction of channel oscilloscope number, present digital signal decoding is confined to serial signal is analyzed basically.
Summary of the invention
The utility model purpose is to provide a kind of oscillograph of supporting multiple serial communication protocol decoding function.
For achieving the above object, the utility model is taked following technical proposals:
The oscillograph of the multiple serial communication protocol decoding function of support described in the utility model comprises central processing unit, is connected in the display unit of described central processing unit output terminal; The central processing unit signal input part is connected with the signal output part of analog signal conditioner unit by the universal serial bus processing unit.
Described universal serial bus processing unit comprises: decoding and trigger element, being connected output terminal and being connected in the data-signal input end of described decoding and trigger element and described analog signal conditioner unit with the sampled data storage unit, and communicates to connect with the Frame information memory cell; Described sampled data storage unit input end is connected with the signal output part of described analog signal conditioner unit by the A/D sampling unit; Described Frame information memory cell output terminal, sampled data storage unit output terminal and decoding are connected with described central processing unit signal input part respectively with the trigger element output terminal.
According to user's needs, described central processing unit output terminal is connected with the storage unit input end, is used for the Frame information of central processing unit is saved in the storage medium of described storage unit.
The utility model advantage is owing to having adopted the universal serial bus processing unit that is independent of CPU, and in the universal serial bus processing unit, waveform acquisition and serial decode executed in parallel, thus very high Frame capture rate possessed; Frame information can realize accurate corresponding with original waveform data.
Description of drawings
Fig. 1 is schematic block circuit diagram of the present utility model.
Fig. 2 is the schematic block circuit diagram of universal serial bus processing unit among Fig. 1.
Embodiment
As shown in Figure 1, 2, the oscillograph of the multiple serial communication protocol decoding function of support described in the utility model comprises central processing unit, is connected in the display unit of described central processing unit output terminal; The central processing unit signal input part is connected with the signal output part of analog signal conditioner unit by the universal serial bus processing unit.Described universal serial bus processing unit comprises: decoding and trigger element, being connected output terminal and being connected in the data-signal input end of described decoding and trigger element and described analog signal conditioner unit with the sampled data storage unit, and communicates to connect with the Frame information memory cell; Described sampled data storage unit input end is connected with the signal output part of described analog signal conditioner unit by the A/D sampling unit; Described Frame information memory cell output terminal, sampled data storage unit output terminal and decoding are connected with described central processing unit signal input part respectively with the trigger element output terminal.According to user's needs, described central processing unit output terminal is connected with the storage unit input end, is used for the Frame information of central processing unit is saved in the storage medium of described storage unit.
The utility model principle of work is summarized as follows:
As shown in Figure 1, 2, after the input signal process analog signal conditioner cell processing, be sent to the universal serial bus processing unit, the universal serial bus processing unit is responsible for serial signal is decoded according to selected communications protocol, when default trigger condition arrives, the original waveform information of decoding rear digitized Frame information and capture is sent to central processing unit together, and central processing unit shows it at display unit; If the user needs, central processing unit also can be saved to Frame information on the storage medium of storage unit.
Decoding and trigger element, A/D sampling unit, Frame information memory cell, sampled data storage unit consist of the universal serial bus processing unit jointly.The signal that the analog signal conditioner unit sends is delivered to respectively decoding and trigger element and A/D sampling unit, these two unit concurrent workings, simultaneously the signal of sending into is processed: the A/D sampling unit constantly gathers and stores original waveform information, and it is saved to the sampled data storage unit; Decoding and trigger element are according to the serial communication protocol that sets, analog quantity is converted to digital format, record simultaneously the architectural feature relevant with Frame: such as distinguishing frame head, data field or check field etc., form digitized Frame information, and it is saved to the Frame information memory cell, when detecting serial signal event that the user sets and occur, data in Frame information memory cell and the sampled data storage unit are latched, and be sent to central processing unit and carry out subsequent treatment; Frame information memory cell and sampled data storage unit all adopt double-damping structure, and the described process of latching is the handoff procedure of inner double-damping structure.
In order in display unit, digitized Frame information and original waveform information to be carried out exact matching, each data element in the Frame information all records its positional information simultaneously, and this positional information has been described this data element corresponding to the start-stop position in the original waveform data in the sampled data storage unit.Central processing unit is after receiving described original waveform and Frame information, original waveform information is plotted in the waveform viewing area of display unit screen, utilize simultaneously the positional information of each data element of storing in the Frame information, it is presented at specified location on the screen in proportion.The user can select to enter logging mode, and under this pattern, screen is display waveform information no longer, but is used for roll display Frame information; Simultaneously Frame information is saved to memory cell, the information after the storage can export to computing machine and carry out subsequent analysis.
Claims (2)
1. an oscillograph of supporting multiple serial communication protocol decoding function comprises central processing unit, is connected in the display unit of described central processing unit output terminal; It is characterized in that: the central processing unit signal input part is connected with the signal output part of analog signal conditioner unit by the universal serial bus processing unit.
2. the oscillograph of the multiple serial communication protocol decoding function of described support according to claim 1, it is characterized in that: described universal serial bus processing unit comprises: decoding and trigger element, being connected output terminal and being connected in the data-signal input end of described decoding and trigger element and described analog signal conditioner unit with the sampled data storage unit, and communicates to connect with the Frame information memory cell; Described sampled data storage unit input end is connected with the signal output part of described analog signal conditioner unit by the A/D sampling unit; Described Frame information memory cell output terminal, sampled data storage unit output terminal and decoding are connected with described central processing unit signal input part respectively with the trigger element output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220462744.1U CN202770890U (en) | 2012-09-12 | 2012-09-12 | Oscilloscope supporting a plurality of serial communication protocol decoding functions |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201220462744.1U CN202770890U (en) | 2012-09-12 | 2012-09-12 | Oscilloscope supporting a plurality of serial communication protocol decoding functions |
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| CN202770890U true CN202770890U (en) | 2013-03-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730306A (en) * | 2013-12-24 | 2015-06-24 | 苏州普源精电科技有限公司 | Automatic decoding threshold setting method and oscilloscope with automatic decoding threshold setting function |
| CN104880593A (en) * | 2014-02-28 | 2015-09-02 | 罗德施瓦兹两合股份有限公司 | Digital oscilloscope and a method with parallel acquisition and signal post-processing |
| CN105866501A (en) * | 2016-04-29 | 2016-08-17 | 优利德科技(中国)有限公司 | Method and device for protocol decoding analysis based on oscilloscope |
-
2012
- 2012-09-12 CN CN201220462744.1U patent/CN202770890U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730306A (en) * | 2013-12-24 | 2015-06-24 | 苏州普源精电科技有限公司 | Automatic decoding threshold setting method and oscilloscope with automatic decoding threshold setting function |
| CN104880593A (en) * | 2014-02-28 | 2015-09-02 | 罗德施瓦兹两合股份有限公司 | Digital oscilloscope and a method with parallel acquisition and signal post-processing |
| CN104880593B (en) * | 2014-02-28 | 2019-10-22 | 罗德施瓦兹两合股份有限公司 | Digital oscilloscope and the parallel method obtained with signal post-processing |
| CN105866501A (en) * | 2016-04-29 | 2016-08-17 | 优利德科技(中国)有限公司 | Method and device for protocol decoding analysis based on oscilloscope |
| CN105866501B (en) * | 2016-04-29 | 2019-01-15 | 优利德科技(中国)股份有限公司 | A kind of protocol-decoding analysis method and protocol-decoding analytical equipment based on oscillograph |
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| CX01 | Expiry of patent term |
Granted publication date: 20130306 |