CN201503637U - Concentrator of ARM - Google Patents
Concentrator of ARM Download PDFInfo
- Publication number
- CN201503637U CN201503637U CN2009201010700U CN200920101070U CN201503637U CN 201503637 U CN201503637 U CN 201503637U CN 2009201010700 U CN2009201010700 U CN 2009201010700U CN 200920101070 U CN200920101070 U CN 200920101070U CN 201503637 U CN201503637 U CN 201503637U
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- Prior art keywords
- arm
- modulation
- stream
- processing section
- infrared
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Abstract
The utility model relates to a concentrator of an ARM (advanced RISC machine), which comprises a core-processing unit, an upstream communication channel, a downstream communication channel, a local display and the like. The infrared communication part of the upstream communication channel comprises an infrared receiving part, an infrared transmitting part, a communication indicating part and a modulation and stream processing unit as well as the interfaces of the ARM and a stream control unit. Through the modular design, the updating maintenance is easier. The platform adopts a high-performance 32-bit ARM, an embedded Linux operating system, a second-generation journaling flash file system (Jffs2) and a second-generation yet another flash file system (Yaffs2), therefore, the data processing capacity is strong, the memory capacity is large, and the data reliability is high. Furthermore, infrared communication interfaces are added, therefore, the remote operation is realized during the maintenance, and the use is convenient and flexible.
Description
Technical field
The utility model relates to a kind of low voltage electric network automatic meter reading system, is specifically related to a kind of ARM concentrator.
Background technology
At present, electric system low voltage electric network automaticity is more and more higher, the low voltage power line carrier automatic data logging is the pith of low voltage electric network robotization, the core of centralized automatic meter-reading is a concentrator, concentrator is also stored the data copy reading of equipment such as ammeter in concentrator by low voltage power line carrier or other communication modes, be transferred in the main station system, main station system is analyzed data again, forms various forms.Through development in a few years, concentrator is also being updated renewal, various concentrators occurred, but substantially all be to use single-chip microcomputer as the basis, single-chip microcomputer uses simple, abundant information, be easy to grasp, but resource is less, the problem of bringing is exactly that interface is few, kind of interface also just still less is not easy to safeguard and expand; In addition, data storage capacity is low, has limited the development of concentrator.
Summary of the invention
The purpose of this utility model is to overcome the weak point that exists in the above-mentioned technology, and a kind of compact conformation, reasonable in design is provided, and function is many, rich interface, easy to maintenance, ARM concentrator that data capacity is big.
In order to achieve the above object, the technical solution adopted in the utility model is: comprise core processing unit, uplink communication passage, downgoing communication passage and local demonstration etc., the infrared communication part of described uplink communication passage comprises infrared receiving unit, infrared transmission part, communication indicating section, modulates and flow the interface of processing section and ARM and stream control unit.
The utility model has the advantages that:
Adopted modular designs on the structure, updating maintenance is easier, platform has been selected high performance 32 arm processors+embedded Linux operating system+Jffs2 and Yaffs2 file system for use, data-handling capacity is strong, memory capacity is big and data reliability is high, increased the infrared communication interface, making when safeguarding can remote-controlled operation, convenient, flexible.
Description of drawings
Fig. 1 is the utility model schematic diagram;
Fig. 2 is the utility model infrared receiving module;
Fig. 3 is the infrared sending module of the utility model;
Fig. 4 is the utility model communication indicating section;
Fig. 5 is the utility model modulation and stream processing section;
Fig. 6 is the interface of the utility model ARM and stream control unit
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
By Fig. 1-Fig. 6 as can be known, ARM concentrator described in the utility model, comprise core processing unit 1, uplink communication passage 2, downgoing communication passage 3 and local demonstration 4 etc., the infrared communication part of uplink communication passage 2, comprise infrared receiving unit 5, infrared transmission part 6, communication indicating section 7, modulation and the interface 9 that flows processing section 8 and ARM and stream control unit, infrared receiving unit 5 with the modulation the infrared signal demodulation and be converted to level signal flow to the modulation with stream processing section 8, modulation is flowed processing with stream processing section 8 with the data that receive, legal data send the core processing unit 1 of concentrator to by the interface 9 of ARM and stream control unit, treat that core processing unit returns to modulation and stream processing section 8 replying the interface 9 of data by ARM and stream control unit, modulation sends by infrared transmission part 6 with stream processing section 8 again, core processing unit 1 sends the interface 9 of data by ARM and stream control unit modulation to and flows processing section 8, modulation is passed through R152 with stream processing section 8, Q30 modulates and is converted to by infrared transmission part 6 infrared signal of modulation to infrared signal, 8 pairs of data that receive of described modulation and stream processing section are carried out the current control place, stop useless data to be sent to core processor, alleviate the data processing pressure of core processor, described modulation is adopted the SPI interface mode with stream processing section 8 and core processing unit 1, and increases anti-jamming circuit.
It is the infrared signal of 37.9kHz for the 900nm modulating frequency that infrared receiving unit 5 is responsible for connecing wavelength, and the signal demodulation that receives is converted to Transistor-Transistor Logic level, give modulation and stream processing section 8, deliver to the driving stage Q34 of communication indicating section 7 simultaneously, Q34 drives red LED (LD21), is used to refer to and receives signal.Between infrared receiving unit 5 and modulation and stream processing section 8, adopt serial asynchronous communication, a start bit low level, 8 bit data positions, a check bit, even parity check, a position of rest.Modulation is responsible for current control with stream processing section 8, controlling mechanism be receive begin behind the fixing start-of-text character by initial symbol back followed by message length receive whole frame data, and carry out the frame format verification, after verification is passed through, BUF_Full signal wire (PB2 of U4 connects the PC10 that resistance R 159 is linked core processing unit again), send Data Receiving to core processing unit 1 and finish signal, request core processing unit 1 reading of data.After core processing unit 1 is received signal, read modulation and flow the data that receive processing section 8 by SPI interface (PA0...PA3).When core processing unit 1 is handled message, check that (this pin is the output signal of modulation with stream processing section 8 with the RDY1 pin level that flows processing section 8 in modulation, for high level is represented to modulate and flowed the data that processing section 8 can receive core processing unit), if modulation is ready with stream processing section 8, core processing unit 1 sends to modulation and stream processing section 8 to message response just now, modulation and stream processing section 8 again by resistance R 8 according to the data flow con-trol transistor Q31 conducting of asynchronous serial port with end, simultaneously Q30 is subjected to the 37.9kHz signal controlling conducting that U4 sends and ends the asynchronous communication signal that it is carrier frequency that 6 of infrared transmission parts obtain a 38kHz.
Claims (5)
1. ARM concentrator, comprise core processing unit (1), uplink communication passage (2), downgoing communication passage (3) and local demonstration (4) etc., it is characterized in that: the infrared communication part of described uplink communication passage (2) comprises infrared receiving unit (5), infrared transmission part (6), communication indicating section (7), modulates and flow the interface (9) of processing section (8) and ARM and stream control unit.
2. ARM concentrator according to claim 1, it is characterized in that: described infrared receiving unit (5) with the modulation the infrared signal demodulation and be converted to level signal flow to the modulation with stream processing section (8), modulation is flowed processing with stream processing section (8) with the data that receive, legal data send the core processing unit (1) of concentrator to by the interface (9) of ARM and stream control unit, treat that core processing unit returns to modulation and stream processing section (8) replying the interface (9) of data by ARM and stream control unit, modulation sends by infrared transmission part (6) with stream processing section (8) again.
3. ARM concentrator according to claim 1, it is characterized in that: described core processing unit (1) sends the interface (9) of data by ARM and stream control unit modulation to and flows processing section (8), and the infrared signal of modulation is modulated and be converted to by infrared transmission part (6) in modulation and stream processing section (8) to infrared signal by R152, Q30.
4. ARM concentrator according to claim 1 is characterized in that: described modulation is carried out the current control place with stream processing section (8) to the data that receive, and stops useless data to be sent to core processor, alleviates the data processing pressure of core processor.
5. ARM concentrator according to claim 1 is characterized in that: described modulation is adopted the SPI interface mode with stream processing section (8) and core processing unit (1), and increases anti-jamming circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201010700U CN201503637U (en) | 2009-10-15 | 2009-10-15 | Concentrator of ARM |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201010700U CN201503637U (en) | 2009-10-15 | 2009-10-15 | Concentrator of ARM |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201503637U true CN201503637U (en) | 2010-06-09 |
Family
ID=42454567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201010700U Expired - Fee Related CN201503637U (en) | 2009-10-15 | 2009-10-15 | Concentrator of ARM |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201503637U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10733141B2 (en) | 2018-03-27 | 2020-08-04 | Analog Devices, Inc. | Distributed processor system |
-
2009
- 2009-10-15 CN CN2009201010700U patent/CN201503637U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10733141B2 (en) | 2018-03-27 | 2020-08-04 | Analog Devices, Inc. | Distributed processor system |
| US11422969B2 (en) | 2018-03-27 | 2022-08-23 | Analog Devices, Inc. | Distributed processor system |
| US11907160B2 (en) | 2018-03-27 | 2024-02-20 | Analog Devices, Inc. | Distributed processor system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100609 Termination date: 20171015 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |