CN105828217A - Internet bidirectional response system - Google Patents
Internet bidirectional response system Download PDFInfo
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- CN105828217A CN105828217A CN201610340933.4A CN201610340933A CN105828217A CN 105828217 A CN105828217 A CN 105828217A CN 201610340933 A CN201610340933 A CN 201610340933A CN 105828217 A CN105828217 A CN 105828217A
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- resistance
- audion
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- fsk
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6118—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving cable transmission, e.g. using a cable modem
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/02—Standardisation; Integration
- H04L41/0213—Standardised network management protocols, e.g. simple network management protocol [SNMP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
- H04N21/6168—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network involving cable transmission, e.g. using a cable modem
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/637—Control signals issued by the client directed to the server or network components
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
The invention discloses an internet bidirectional response system. The system comprises a control module, a local interface, an RF MODEM, an A/D conversion module and a state detection control module. The RF MODEM comprises an FSK demodulation module, a level control module and an FSK generation module. The control module is connected with the local interface, the FSK demodulation module, the level control module, the FSK generation module, the A/D conversion module, an analog data interface, the state detection control module, a data storage module and an NVRAM. The A/D conversion module also is connected with the analog data interface and the FSK generation module. The level control module is also connected with the FSK generation module and an RF port. The RF port is also connected with the FSK demodulation module. The internet bidirectional response system provided by the invention is reliable in communication and high in anti-interference capability. In an HFC network, network device operation data can be collected and processed. Moreover, control instructions issued by a management system can be executed. The system is low in power consumption, high in integration, modularized in design, universal in mounting shape, long service life and convenient maintenance.
Description
Technical field
The present invention relates to a kind of answering system, the specifically two-way answering system in a kind of the Internet.
Background technology
In a cable TV network real-time management system, answering system is very universal at down channel as a kind of bi-directional communication device, owing to front end computer sends address with broadcast mode to transponder, and the signal to noise ratio of cable television downlink system is higher, so the communication of down channel is reliable, and be the shared channel of a kind of convergent type at up channel, it is the communication to a front end computer of multiple transponder during communication, when an answering system communicates, other answering systems are equivalent to frequency noise source, these noise sources will disturb the communication of normal response system after being pooled to front end.
Summary of the invention
It is an object of the invention to provide the two-way answering system in the high the Internet of a kind of stability, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the present invention provides following technical scheme:
The two-way answering system in a kind of the Internet, including control module, local interface, RFMODEM, A/D modular converter and state-detection control module, described RFMODEM includes FSK demodulation module, level control block and FSK generation module, described control module connects local interface respectively, FSK demodulation module, level control block, FSK generation module, A/D modular converter, analog data interface, state-detection control module, data memory module and NVRAM, A/D modular converter is also connected with analog data interface and FSK generation module, described level control block is also connected with FSK generation module and RF port, RF port is also connected with FSK demodulation module；
Described FSK demodulation module includes that hysteresis comparator circuit described in envelope detection circuit, edge sense circuit, hysteresis comparator circuit and generating circuit from reference voltage connects signal output part, edge sense circuit and generating circuit from reference voltage respectively, the edge sense circuit other end connects envelope detection circuit, and the envelope detection circuit other end connects radio-frequency (RF) signal input end；
Described envelope detection circuit includes diode D1, resistance R1 and audion Q1, described edge sense circuit includes resistance R7 and diode D2, described generating circuit from reference voltage includes resistance R3, resistance R4 and audion Q3, described hysteresis comparator audion Q7 and audion Q6；nullDescribed diode D1 positive pole connects radio-frequency (RF) signal input end，Diode D1 negative pole connects resistance R10 respectively、Electric capacity C1 and electric capacity C2，The described electric capacity C2 other end connecting triode Q2 base stage and resistance R6 respectively，Audion Q2 emitter stage connects the electric capacity C1 other end and the resistance R10 other end ground connection respectively，Described audion Q2 colelctor electrode connecting triode Q1 emitter stage，Audion Q1 colelctor electrode connects resistance R1 and power supply VCC respectively，The resistance R1 other end connects resistance R11 and earth resistance R2 respectively，Resistance R11 other end connecting triode Q1 base stage，The described resistance R6 other end connects diode D3 negative pole and audion Q5 base stage respectively，Audion Q5 colelctor electrode connects resistance R7 respectively、Diode D2 negative pole and audion Q6 colelctor electrode，The resistance R7 other end connects resistance R9 and power supply VCC respectively，The resistance R9 other end connecting triode Q7 colelctor electrode and signal output part respectively，Audion Q7 base stage connects diode D2 positive pole，Described audion Q6 emitter stage connecting triode Q7 emitter stage respectively、Resistance R8、Diode D3 positive pole and resistance R5 ground connection，The resistance R8 other end connecting triode Q5 emitter stage and audion Q6 base stage respectively，The described resistance R5 other end connects electric capacity C3 and audion Q4 base stage respectively，Audion Q4 emitter stage connects the electric capacity C3 other end ground connection，Audion Q4 colelctor electrode connecting triode Q3 emitter stage，Audion Q3 colelctor electrode connects resistance R4 and power supply VCC respectively，The resistance R4 other end connecting triode Q3 base stage and earth resistance R3 respectively.
As the present invention further scheme: described FSK generation module uses chip CC1150.
Compared with prior art, the invention has the beneficial effects as follows: the Internet of the present invention two-way answering system reliable communications, capacity of resisting disturbance are strong, in hfc plant, the collection of network equipment service data, process can be completed, perform the control instruction that management system issues, low-power consumption, highly integrated, modularized design simultaneously, and FSK demodulation module is optimized design, demodulate effective, general installation profile, service life length, easy to maintenance.
Accompanying drawing explanation
Fig. 1 is the schematic block circuit diagram of the two-way answering system in the Internet；
Fig. 2 is the circuit structure block diagram of FSK demodulation module in the two-way answering system in the Internet；
Fig. 3 is the circuit theory diagrams of FSK demodulation module in the two-way answering system in the Internet.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
Refer to Fig. 1～3, in the embodiment of the present invention, the two-way answering system in a kind of the Internet, including control module, local interface, RFMODEM, A/D modular converter and state-detection control module, described RFMODEM includes FSK demodulation module, level control block and FSK generation module, described control module connects local interface respectively, FSK demodulation module, level control block, FSK generation module, A/D modular converter, analog data interface, state-detection control module, data memory module and NVRAM, A/D modular converter is also connected with analog data interface and FSK generation module, described level control block is also connected with FSK generation module and RF port, RF port is also connected with FSK demodulation module；
Described FSK demodulation module includes that hysteresis comparator circuit described in envelope detection circuit, edge sense circuit, hysteresis comparator circuit and generating circuit from reference voltage connects signal output part, edge sense circuit and generating circuit from reference voltage respectively, the edge sense circuit other end connects envelope detection circuit, and the envelope detection circuit other end connects radio-frequency (RF) signal input end；
Described envelope detection circuit includes diode D1, resistance R1 and audion Q1, described edge sense circuit includes resistance R7 and diode D2, described generating circuit from reference voltage includes resistance R3, resistance R4 and audion Q3, described hysteresis comparator audion Q7 and audion Q6；nullDescribed diode D1 positive pole connects radio-frequency (RF) signal input end，Diode D1 negative pole connects resistance R10 respectively、Electric capacity C1 and electric capacity C2，The described electric capacity C2 other end connecting triode Q2 base stage and resistance R6 respectively，Audion Q2 emitter stage connects the electric capacity C1 other end and the resistance R10 other end ground connection respectively，Described audion Q2 colelctor electrode connecting triode Q1 emitter stage，Audion Q1 colelctor electrode connects resistance R1 and power supply VCC respectively，The resistance R1 other end connects resistance R11 and earth resistance R2 respectively，Resistance R11 other end connecting triode Q1 base stage，The described resistance R6 other end connects diode D3 negative pole and audion Q5 base stage respectively，Audion Q5 colelctor electrode connects resistance R7 respectively、Diode D2 negative pole and audion Q6 colelctor electrode，The resistance R7 other end connects resistance R9 and power supply VCC respectively，The resistance R9 other end connecting triode Q7 colelctor electrode and signal output part respectively，Audion Q7 base stage connects diode D2 positive pole，Described audion Q6 emitter stage connecting triode Q7 emitter stage respectively、Resistance R8、Diode D3 positive pole and resistance R5 ground connection，The resistance R8 other end connecting triode Q5 emitter stage and audion Q6 base stage respectively，The described resistance R5 other end connects electric capacity C3 and audion Q4 base stage respectively，Audion Q4 emitter stage connects the electric capacity C3 other end ground connection，Audion Q4 colelctor electrode connecting triode Q3 emitter stage，Audion Q3 colelctor electrode connects resistance R4 and power supply VCC respectively，The resistance R4 other end connecting triode Q3 base stage and earth resistance R3 respectively；Described FSK generation module uses chip CC1150.
The operation principle of the present invention is: refer to Fig. 1, the core component of transponder is control module, on the one hand its main task is to receive order that state-detection control module sends and respond, and completes parsing and the parsing of application message layer protocol SNMPv1 of the mac-layer protocol to HMS；On the other hand each simulated object parameter of analog data interface and discrete objects parameter reconditioning MIB database are gathered by A/D modular converter.Data memory module is for storing the content of MIB database, and NVRAM is for depositing the parameter of HMS standard-required non-volatile memories.
Transponder leaves local interface on hardware, its function is the relevant MIB data base that the inside actual installation information according to transmission equipment carrys out situ configuration transponder, such as, certain optical node maximum has 3 road light emission modules, but the most all install when reality is applied, certain 1 road that may be only fitted into or the transmitter module on certain 2 tunnel, can the MIB database of situ configuration transponder light emission module by local interface, certain road transmitter module of corresponding optical node actual installation selects open-minded, uninstalled transmitter module selects to turn off, so NMS will obtain the actual installation situation within this optical node when traveling through the MIB database of optical node transponder, network management personnel can be appreciated that the mount message of optical node according to this, it is easy to engineering maintenance.
The reliable operation of RFMODEM whether directly affect the data communication with hfc plant as platform reliability, RFMODEM module uses independent uplink and downlink channel to be connected to RF port, wherein up channel includes FSK generation module and level control block, down channel includes FSK demodulation module, up channel carrier frequency modulation range is 3.2MHz bandwidth, and down channel carrier frequency modulation range is 8MHz bandwidth；Uplink transmission power level has the range of accommodation of 24dB.Transponder can intercept effective down channel in the range of downlink carrier frequency automatically, and then determines effective up channel and uplink transmission power level.
Refer to Fig. 2～3, the effect that Fsk demodulator circuit demodulates under different pulse widths is different, the particularly output pulse degree of depth varies slightly, it is minimum 80mV that circuit can correctly demodulate the difference of its low and high level of envelope signal, when the low and high level conversion time of envelope signal is less than 0.1us, the minimum signal pulsewidth that circuit can detect is 2.5us, improve the sensitivity of circuit demodulation, expand input dynamic range, there is low-voltage, low-power consumption, the feature of Larger Dynamic scope, be particularly suitable for processing the signal that modulation depth is shallower.
Claims (2)
1. the two-way answering system in the Internet, including control module, local interface, RFMODEM, A/D modular converter and state-detection control module, it is characterized in that, described RFMODEM includes FSK demodulation module, level control block and FSK generation module, described control module connects local interface respectively, FSK demodulation module, level control block, FSK generation module, A/D modular converter, analog data interface, state-detection control module, data memory module and NVRAM, A/D modular converter is also connected with analog data interface and FSK generation module, described level control block is also connected with FSK generation module and RF port, RF port is also connected with FSK demodulation module；
Described FSK demodulation module includes that hysteresis comparator circuit described in envelope detection circuit, edge sense circuit, hysteresis comparator circuit and generating circuit from reference voltage connects signal output part, edge sense circuit and generating circuit from reference voltage respectively, the edge sense circuit other end connects envelope detection circuit, and the envelope detection circuit other end connects radio-frequency (RF) signal input end；
Described envelope detection circuit includes diode D1, resistance R1 and audion Q1, described edge sense circuit includes resistance R7 and diode D2, described generating circuit from reference voltage includes resistance R3, resistance R4 and audion Q3, described hysteresis comparator audion Q7 and audion Q6；nullDescribed diode D1 positive pole connects radio-frequency (RF) signal input end，Diode D1 negative pole connects resistance R10 respectively、Electric capacity C1 and electric capacity C2，The described electric capacity C2 other end connecting triode Q2 base stage and resistance R6 respectively，Audion Q2 emitter stage connects the electric capacity C1 other end and the resistance R10 other end ground connection respectively，Described audion Q2 colelctor electrode connecting triode Q1 emitter stage，Audion Q1 colelctor electrode connects resistance R1 and power supply VCC respectively，The resistance R1 other end connects resistance R11 and earth resistance R2 respectively，Resistance R11 other end connecting triode Q1 base stage，The described resistance R6 other end connects diode D3 negative pole and audion Q5 base stage respectively，Audion Q5 colelctor electrode connects resistance R7 respectively、Diode D2 negative pole and audion Q6 colelctor electrode，The resistance R7 other end connects resistance R9 and power supply VCC respectively，The resistance R9 other end connecting triode Q7 colelctor electrode and signal output part respectively，Audion Q7 base stage connects diode D2 positive pole，Described audion Q6 emitter stage connecting triode Q7 emitter stage respectively、Resistance R8、Diode D3 positive pole and resistance R5 ground connection，The resistance R8 other end connecting triode Q5 emitter stage and audion Q6 base stage respectively，The described resistance R5 other end connects electric capacity C3 and audion Q4 base stage respectively，Audion Q4 emitter stage connects the electric capacity C3 other end ground connection，Audion Q4 colelctor electrode connecting triode Q3 emitter stage，Audion Q3 colelctor electrode connects resistance R4 and power supply VCC respectively，The resistance R4 other end connecting triode Q3 base stage and earth resistance R3 respectively.
The two-way answering system in the Internet the most according to claim 1, it is characterised in that described FSK generation module uses chip CC1150.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610340933.4A CN105828217A (en) | 2016-05-20 | 2016-05-20 | Internet bidirectional response system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610340933.4A CN105828217A (en) | 2016-05-20 | 2016-05-20 | Internet bidirectional response system |
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| CN105828217A true CN105828217A (en) | 2016-08-03 |
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| CN201610340933.4A Pending CN105828217A (en) | 2016-05-20 | 2016-05-20 | Internet bidirectional response system |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1392732A (en) * | 2001-06-15 | 2003-01-22 | 张学斌 | Cable TV HFC network transmission link management system |
| CN201663594U (en) * | 2010-02-08 | 2010-12-01 | 泉州市视通光电网络有限公司 | Responder of Webmaster |
| CN102148726A (en) * | 2011-03-24 | 2011-08-10 | 无锡路通光电技术有限公司 | Network management data acquisition unit of field equipment based on hybrid fiber coax (HFC) network radio frequency (RF) backhaul |
| CN202334559U (en) * | 2011-11-18 | 2012-07-11 | 成都康特电子高新科技有限责任公司 | Network management responder based on field of broadcast television network |
| CN102647380A (en) * | 2011-02-18 | 2012-08-22 | 拉碧斯半导体株式会社 | Fsk demodulator |
| CN202798787U (en) * | 2012-08-03 | 2013-03-13 | 无锡路通视信网络股份有限公司 | HFC (High-frequency Current) webmaster signaling modulator-demodulator based on FSK (Frequency Shift Keying) modulation technique |
| CN202872773U (en) * | 2012-08-14 | 2013-04-10 | 成都思迈科技发展有限责任公司 | Network management responder based on three-in-one network |
| US20130243043A1 (en) * | 2012-03-19 | 2013-09-19 | Samsung Electronics Co., Ltd. | Transmitter and receiver for reducing power consumption in fm-uwb communication system |
| CN204836202U (en) * | 2015-07-21 | 2015-12-02 | 合肥有线电视宽带网络有限公司 | Cable network network management transponder |
-
2016
- 2016-05-20 CN CN201610340933.4A patent/CN105828217A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1392732A (en) * | 2001-06-15 | 2003-01-22 | 张学斌 | Cable TV HFC network transmission link management system |
| CN201663594U (en) * | 2010-02-08 | 2010-12-01 | 泉州市视通光电网络有限公司 | Responder of Webmaster |
| CN102647380A (en) * | 2011-02-18 | 2012-08-22 | 拉碧斯半导体株式会社 | Fsk demodulator |
| CN102148726A (en) * | 2011-03-24 | 2011-08-10 | 无锡路通光电技术有限公司 | Network management data acquisition unit of field equipment based on hybrid fiber coax (HFC) network radio frequency (RF) backhaul |
| CN202334559U (en) * | 2011-11-18 | 2012-07-11 | 成都康特电子高新科技有限责任公司 | Network management responder based on field of broadcast television network |
| US20130243043A1 (en) * | 2012-03-19 | 2013-09-19 | Samsung Electronics Co., Ltd. | Transmitter and receiver for reducing power consumption in fm-uwb communication system |
| CN202798787U (en) * | 2012-08-03 | 2013-03-13 | 无锡路通视信网络股份有限公司 | HFC (High-frequency Current) webmaster signaling modulator-demodulator based on FSK (Frequency Shift Keying) modulation technique |
| CN202872773U (en) * | 2012-08-14 | 2013-04-10 | 成都思迈科技发展有限责任公司 | Network management responder based on three-in-one network |
| CN204836202U (en) * | 2015-07-21 | 2015-12-02 | 合肥有线电视宽带网络有限公司 | Cable network network management transponder |
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