CN201937602U - Key information correction transmission circuit - Google Patents
Key information correction transmission circuit Download PDFInfo
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- CN201937602U CN201937602U CN2011200285718U CN201120028571U CN201937602U CN 201937602 U CN201937602 U CN 201937602U CN 2011200285718 U CN2011200285718 U CN 2011200285718U CN 201120028571 U CN201120028571 U CN 201120028571U CN 201937602 U CN201937602 U CN 201937602U
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- control module
- image processing
- processing module
- transmission circuit
- correction transmission
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Abstract
The utility model relates to a key information correction transmission circuit comprising a control module realized by a DSP (digital signal processor), and an image processing module realized by an ARM device, wherein the image processing module and the control module are respectively connected with an EEPROM (Electrically Erasable Programmable Read-Only Memory) through an I2C port line; the image processing module and the control module are connected with a FLASH through an SPI (Single Program Iniation) port line respectively; and the image processing module and the control module are connected with a DRAM (Dynamic Random Access Memory) through an address line and a data line. The circuit not only has a simple structure and is easy to realize, but also can analyze image data to find the key information of the image data as the image processing module and the control module of the circuit are matched with the EEPROM, the FLASH and a DRAM storage medium, and can carry out special coding of the information to reduce data loss caused by channels.
Description
Technical field
The utility model belongs to oil gas well watch-dog technical field, relates to the industrial watch-dog of a kind of oil gas well, especially a kind of key message error correction transmission circuit that is used for the monitor terminal of oil gas well.
Background technology
The oil gas well belongs to special industry, and the various watch-dogs that are applied to require explosion-proof.Industrial environment is abominable in addition, corrosion resistance.It is open-air that the oil gas well often is in the north, and winter temperature is about-30 degree.Wild environment, power supply relies on wind energy or solar energy, and the storage battery power supply system requires low-power consumption.Wireless transmission, channel quality can not ensure fully, require to have correcting data error, data re-transmitting mechanism.Oil gas well data belong to state secret, require data that encryption mechanism is arranged.Channel capacity is limited, requires data staging, guarantees main information, the core information prioritised transmission.This series products of existing market lacks, and existing industrial monitoring equipment can't satisfy oil gas field user's actual needs.
In the existing industrial monitoring equipment of present oil gas well, when utilizing radio transmitting image information, the channel instability causes easily and loses a yard error code, and therefore, those skilled in the art are desired when designing a kind of circuit that can avoid this information dropout.
The utility model content
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, a kind of key message error correction transmission circuit is provided, this circuit application is in 485 telecommunication IMAQ transmitting, monitoring terminals, it can be by resolving analysis of image data, find key message, and this category information carried out specific coding, add the Hamming error correcting code, to reduce the loss of data that the channel problem causes.
The purpose of this utility model solves by the following technical programs:
This key message error correction transmission circuit comprises control module that is realized by DSP and the image processing module of being realized by the ARM device, and described image processing module and control module are passed through I respectively
2C mouth line is connected with an EEPROM; Described image processing module and control module are connected with a FLASH by SPI mouth line respectively; Described image processing module and control module also are connected with a DRAM by address wire and data wire.
Above-mentioned control module is realized by ARM926.
Above-mentioned image processing module is realized by TMS320DM642.
Above-mentioned control module also is connected with communication unit by serial ports, and described control module connects reset unit by reset circuit.
Above-mentioned DARM adopts MT48LC2M32B2TG; Described EEPROM adopts AT24C256; Described FLASH adopts SST39LF020.
The utlity model has following beneficial effect:
Key message error correction transmission circuit of the present utility model is not only simple in structure, realize easily, and this circuit gets image processing module and control module cooperates EEPROM, FLASH and DRAM storage medium, can resolve analysis of image data, find its key message, carry out specific coding for this category information, to reduce the loss of data that the channel problem causes.By test, find to add after this coded format, improved 30% of key message.Complete image information has improved 17%.And easy to use, can be with monitor data by stable the transferring in the master system of communication unit, and have working stability, the advantage of long service life.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail:
Referring to Fig. 1, key message error correction transmission circuit of the present utility model comprises control module 2 that is realized by DSP and the image processing module of being realized by the ARM device 1.Image processing module 1 and control module 2 are passed through I respectively
2C mouth line is connected with an EEPROM 3; Described image processing module 1 and control module 2 are connected with a FLASH4 by SPI mouth line respectively; Image processing module 1 and control module 2 also are connected with a DRAM 5 by address wire and data wire.
According to above annexation, below provide a preferred embodiment of the present utility model:
In preferred embodiment of the present utility model, control module 2 adopts the ARM926 processor to realize.Image processing module 1 is based on the image processing system of TMS320DM642.Adopt the MT48LC2M32B2TG chip with the DARM 5 that control module 2 is connected with image processing module 1; EEPROM 3 adopts the AT24C256 chip; FLASH4 adopts the SST39LF020 flash memory.Additional control module 2 also is connected with communication unit 6 by serial ports, and communication unit 6 can be by MAX3232, and chips such as MAX485 and isolation grating are realized.Control module 2 connects reset unit 7 by reset circuit.
The utility model can be applicable on the 485 telecommunication IMAQ transmitting, monitoring terminals, and this kind terminal generally comprises control module, image capture module, image processing module, memory cell, power module, human and machine interface unit, monitoring means and communication unit.Annexation between them is: control module connects image capture module by control line; Control module is connected image processing module and memory cell by data/address bus respectively with address bus; Control module connects power module by power line; Control module is connected human and machine interface unit by external interrupt with the demonstration control line; Control module connects reset unit by reset circuit; Control module also connects communication unit by serial ports; Image processing module is connected with memory cell is two-way; And image processing module is connected with external camera or built-in C CD/CMOS transducer.
EEPROM of the present utility model, DARM and FLASH can be used as the memory cell of above-mentioned 485 telecommunication IMAQ transmitting, monitoring terminals, module of the same name or unit in the image processing module of monitor terminal, control module and communication unit and the utility model key message error correction transmission circuit are meant same functional unit, the utility model can effectively guarantee new stability to transmission, can not cause and lose sign indicating number or error code phenomenon.
Claims (5)
1. a key message error correction transmission circuit comprises control module (2) that is realized by DSP and the image processing module of being realized by the ARM device (1), and it is characterized in that: described image processing module (1) and control module (2) are passed through I respectively
2C mouth line is connected with an EEPROM (3); Described image processing module (1) and control module (2) are connected with a FLASH (4) by SPI mouth line respectively; Described image processing module (1) and control module (2) also are connected with a DRAM (5) by address wire and data wire.
2. key message error correction transmission circuit according to claim 1 is characterized in that: described control module (2) is realized by ARM926.
3. key message error correction transmission circuit according to claim 1 is characterized in that: described image processing module (1) is realized by TMS320DM642.
4. key message error correction transmission circuit according to claim 1 is characterized in that: described control module (2) also is connected with communication unit (6) by serial ports, and described control module (2) connects reset unit (7) by reset circuit.
5. key message error correction transmission circuit according to claim 1 is characterized in that: described DARM (5) adopts MT48LC2M32B2TG; Described EEPROM (3) adopts AT24C256; Described FLASH (4) adopts SST39LF020.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200285718U CN201937602U (en) | 2011-01-27 | 2011-01-27 | Key information correction transmission circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200285718U CN201937602U (en) | 2011-01-27 | 2011-01-27 | Key information correction transmission circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201937602U true CN201937602U (en) | 2011-08-17 |
Family
ID=44449106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200285718U Expired - Lifetime CN201937602U (en) | 2011-01-27 | 2011-01-27 | Key information correction transmission circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201937602U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761734A (en) * | 2012-07-05 | 2012-10-31 | 北京众博达石油科技有限公司 | 485 telecommunication image acquisition and transmission monitoring terminal and image processing method thereof |
-
2011
- 2011-01-27 CN CN2011200285718U patent/CN201937602U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761734A (en) * | 2012-07-05 | 2012-10-31 | 北京众博达石油科技有限公司 | 485 telecommunication image acquisition and transmission monitoring terminal and image processing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110817 |