CN202374267U - Automatic monitoring circuit of optical fiber repeater remote unit - Google Patents
Automatic monitoring circuit of optical fiber repeater remote unit Download PDFInfo
- Publication number
- CN202374267U CN202374267U CN2011204383067U CN201120438306U CN202374267U CN 202374267 U CN202374267 U CN 202374267U CN 2011204383067 U CN2011204383067 U CN 2011204383067U CN 201120438306 U CN201120438306 U CN 201120438306U CN 202374267 U CN202374267 U CN 202374267U
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- China
- Prior art keywords
- cpu
- power amplifier
- optical fiber
- threshold switch
- monitoring
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- Expired - Fee Related
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Abstract
The utility model discloses an automatic monitoring circuit of an optical fiber repeater remote unit, which comprises a monitoring panel CPU, a threshold switch CPU for monitoring the operating state of a threshold switch, a power amplifier module CPU for monitoring the operating state of a power amplifier and a memory, wherein the monitoring panel CPU is connected with the threshold switch CPU, the power amplifier module CPU and a remote unit optical module through interface circuits. The automatic monitoring circuit disclosed by the utility model has the advantages of simplifying circuits, expanding functions, and improving both the monitoring speed and the system reliability.
Description
Technical field
The utility model relates to a kind of remote termination of optical fiber repeater, the circuit that makes the inside of remote termination have automatic monitoring and controlled function specifically.
Background technology
Optical fiber repeater is that a kind of radio communication feeble field is mended equipment of blind, and remote termination wherein is the visual plant of transition and conversion between optical fiber and the cordless communication network.Remote termination receives the signal from the near-end machine through optical fiber, and the optical module in remote termination carries out opto-electronic conversion, it is become radiofrequency signal delivers to descending power amplifier module and carry out power amplification, and after duplexer filter filtering by retransmitting antenna to aerial radiation.Retransmitting antenna is received the signal that the user sends; After duplexer filter filtering; Delivering to low noise amplifier through threshold switch amplifies; Go into optical fiber and pass back to the near-end machine by the optical module opto-electronic conversion is laggard through the radiofrequency signal of amplifying, thereby accomplish communication function one time, Mi has mended the blind area of radio communication.But; Existing remote termination does not have automatic monitoring function; When breaking down, a certain remote termination make whole communication line can't operate as normal the time; Be difficult for finding out fast guilty culprit, particularly because remote termination is arranged on away from the railway of base station along the line, this has just brought bigger difficulty for repairing communication fast.
The utility model content
The utility model technical problem to be solved provides a kind of automatic monitoring system circuit of optical fiber repeater remote termination, and it mainly accomplishes detection, the fault alarm of remote termination operating state, the inquiry and the control of response near-end machine.
A kind of automatic supervisory circuit of optical fiber repeater remote termination; It comprises monitor board CPU, be used to monitor the threshold switch CPU of thresholding switch working state, be used to monitor the power amplifier module CPU of power amplifier work state, and said monitor board CPU connects threshold switch CPU, power amplifier module CPU and remote termination optical module respectively through interface circuit.
Be connected through the RS422 serial port circuit between monitor board CPU and threshold switch CPU and the power amplifier module CPU.
Be connected through the RS232 interface circuit between monitor board CPU and the remote termination optical module.
The advantage of the utility model: the one, simplified circuit, the 2nd, expanded function, the 3rd, improved monitor speed and system reliability.
Description of drawings
Fig. 1 is the structured flowchart of the utility model.
Embodiment
As shown in Figure 1; The automatic supervisory circuit of the described optical fiber repeater remote termination of the utility model; It comprises monitor board CPU, be used to monitor the threshold switch CPU of thresholding switch working state, be used to monitor the part such as power amplifier module CPU and memory of power amplifier work state, and monitor board CPU connects threshold switch CPU, power amplifier module CPU and remote termination optical module respectively through interface circuit.Wherein be connected through the RS422 serial port circuit between monitor board CPU and threshold switch CPU and the power amplifier module CPU, and be connected through the RS232 interface circuit between monitor board CPU and the remote termination optical module.
Its design philosophy is to be core with the monitor board; Each module is the Control on Communication network technology at intercommunication terminal; Threshold switch and power amplifier have the independent CPUs monitoring unit, the power and the standing wave of radiofrequency signal are gathered, are decayed and amplify, to realize detection and the monitoring to radiofrequency signal.Because the independence of threshold switch and power amplifier module, even monitor board quits work, radiofrequency signal still can be unblocked, thereby improved the reliability of system greatly.
Radiofrequency signal power detects and monitoring with decay; Using the A/D conversion to handle the back passback via power amplifier CPU gives monitor board and is sent to the near-end machine by monitor board CPU; Power amplifier CPU uses D/A conversion and attenuator to accomplish the power amplification control to telecommunication circuit, thereby improves the accuracy to the detection and the control of communication system greatly.
In addition, system also monitors power supply, backup battery, gate inhibition, standing wave, temperature in real time, and stand by lamp was bright when abnormal signal was arranged, and sends warning information to the near-end machine.
Because system used a plurality of CPU, make the operating efficiency of system have comparatively reliably and guarantee that each CPU acts in accordance with the division of their functions and duties in the detection of telecommunication circuit and monitoring.Power amplifier CPU only is responsible for attacking the detection and the monitoring of the power signal of amplification module, and threshold switch CPU controls up threshold level and decay, the CPU of monitor board be responsible for near-end machine and system in the communicating by letter and control of each module.This kind structure has prevented to use the crowding in transaction and control procedure of single CPU, has shortened the control section ancillary equipment stand-by period, thereby system handles efficient is promoted greatly.Threshold switch and power amplifier use the msp430F135CPU of TI company, Flash memory, serial communication unit (Uart) etc. in built-in 12 the A/D conversions of this kind CPU, internal temperature sensor, the sheet.The built-in c8051f020CPU of monitor board, this kind CPU supports multitask mode, supports that multiprogramming moves simultaneously, thereby monitoring efficiency is improved greatly.
Adopt RS232 and RS422 telecommunication circuit between monitor board and each module, realized the communication between each module and the monitor board with comparalive ease.Frame structure is adopted in communications control, uses the CRC check mode, guarantees the data error free transmission.
The CPU of monitor board is a core control part, and the CPU in optical module, power amplifier module and the threshold switch is all coupled through data wire.Various command signals by the turnover of light pricker transmits are handled by monitor board CPU, and are sent to each module by its go-on-go.Being sent to optical module after the information of each module passback is also handled by host CPU goes forward side by side into optical fiber.
Claims (2)
1. the automatic supervisory circuit of an optical fiber repeater remote termination; It is characterized in that: it comprises monitor board CPU, be used to monitor the threshold switch CPU of thresholding switch working state, be used to monitor the power amplifier module CPU of power amplifier work state, and said monitor board CPU connects threshold switch CPU, power amplifier module CPU and remote termination optical module respectively through interface circuit.
2. the automatic supervisory circuit of optical fiber repeater remote termination according to claim 1 is characterized in that: be connected through the RS422 serial port circuit between said monitor board CPU and threshold switch CPU and the power amplifier module CPU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204383067U CN202374267U (en) | 2011-11-08 | 2011-11-08 | Automatic monitoring circuit of optical fiber repeater remote unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204383067U CN202374267U (en) | 2011-11-08 | 2011-11-08 | Automatic monitoring circuit of optical fiber repeater remote unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202374267U true CN202374267U (en) | 2012-08-08 |
Family
ID=46597957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204383067U Expired - Fee Related CN202374267U (en) | 2011-11-08 | 2011-11-08 | Automatic monitoring circuit of optical fiber repeater remote unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202374267U (en) |
-
2011
- 2011-11-08 CN CN2011204383067U patent/CN202374267U/en not_active Expired - Fee Related
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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: 20120808 Termination date: 20141108 |
|
| EXPY | Termination of patent right or utility model |