CN201821454U - Remote network monitoring system - Google Patents
Remote network monitoring system Download PDFInfo
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- CN201821454U CN201821454U CN 201020505072 CN201020505072U CN201821454U CN 201821454 U CN201821454 U CN 201821454U CN 201020505072 CN201020505072 CN 201020505072 CN 201020505072 U CN201020505072 U CN 201020505072U CN 201821454 U CN201821454 U CN 201821454U
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Abstract
The utility model discloses a remote network monitoring system, which comprises a monitoring host and a plurality of remote monitoring terminals, wherein the monitoring host is in series connection with each of the remote monitoring terminals to form a single daisy chain; the monitoring host and the remote monitoring terminals receive a data packet through an SHDSL (single-pair high-speed digital subscriber line) chip; and a MCU (micro control unit) judges whether the local is a destination terminal or not according to address information in the data packet, if so, the data packet is processed, and if not, the MCU sends the data packet to other units through the SHDSL chip. The remote network monitoring system adopts digital communication, has long communication distance and strong anti-interference capacity and has no limitation on the number of accessed remote monitoring terminals.
Description
Technical field
The utility model relates to a kind of remote network monitoring system, relates in particular to the long distance control system that various alarm signals and sound, video monitoring information are handled in long-range many places.
Background technology
At present, the visible building intercom system has been widely used on the various building.Application number is to disclose a kind of visible building intercom system and main frame thereof in 200710032130.3 the application documents, and Fig. 1 is the theory diagram of this visible building intercom system; This system comprises main frame and several video intercom terminals, and each video intercom terminal links to each other with main frame by mode in parallel, comprises central processing unit in the main frame, is transmitted control signal on control signal wire to purpose video intercom terminal by central processing unit.
But this kind visible building intercom system, what transmit is a kind of analog signal, and supervisory control system need insert a plurality of monitoring extension sets (being visual intercommunication terminal), if adopt the analogue technique transmission, need to solve a plurality of extension sets and insert the resistance matching problem that causes, thereby cause the extension set limited amount that can insert, simultaneously, the transmission range that can realize is also limited.
The utility model content
The utility model provides a kind of remote network monitoring system, after sound, video data and control information data processing, carries out transfer of data by the SHDSL technology, and antijamming capability is strong, the system communication distance, between two nodes greater than 3KM.
The utility model provides a kind of remote network monitoring system, comprises monitoring host computer and a plurality of remote monitoring terminal, and monitoring host computer and each remote monitoring terminal are connected mutually, forms daisy chain; Described monitoring host computer and remote monitoring terminal include MCU and SHDSL chip;
Described SHDSL chip is used for the transceive data bag, described MCU judges according to the destination address information that comprises in the packet that receives whether this remote monitoring terminal is the purpose terminal, if, then described packet is handled in this locality, otherwise, described packet is transmitted to connected monitoring host computer or next stage remote monitoring terminal by described SHDSL chip again.
From above scheme as can be seen, because the transmission of SHDSL chip is the signal rather than the analog signal of process digitized processing, circuit design only need be considered to satisfy the input impedance of next stage extension set and get final product, therefore when inserting new monitoring extension set, system need not consider the problem of impedance matching, make System Expansion simple, antijamming capability is far longer than the antijamming capability of transmission of analogue signal in the prior art simultaneously.And aspect device hardware, need not use amplifier that analog signal is amplified, make the quantity of the remote monitoring terminal that can insert unrestricted.
Description of drawings
Fig. 1 is the schematic diagram of video monitoring system in the prior art;
Fig. 2 is the theory diagram of dual-port monitoring host computer and remote monitoring terminal;
Fig. 3 is the theory diagram of four port monitoring main frames and remote monitoring terminal;
Fig. 4 is the network topological diagram of semi-ring list daisy chain long distance control system;
Fig. 5 is the network topological diagram of loopful list daisy chain long distance control system;
Fig. 6 is the network topological diagram of the two daisy chain long distance control systems of semi-ring;
Fig. 7 is the network topological diagram of the two daisy chain long distance control systems of loopful;
Fig. 8 is for mixing the network topological diagram of single daisy chain long distance control system.
Embodiment
The utility model provides a kind of long distance control system, and this long distance control system can solve the monitoring extension set limited amount that inserts in the prior art, antijamming capability is weak and problem that can't long-distance transmissions.Long distance control system of the present utility model can adopt the multiple network topological structure, is illustrated detailed protocol of the present utility model with several specific embodiments below.
Embodiment one
Long distance control system of the present utility model can adopt the multiple network topological structure, and present embodiment is introduced the long distance control system of semi-ring list daisy chain.
Comprise monitoring host computer and a plurality of remote monitoring terminal in remote network monitoring system of the present utility model, Fig. 2 is the monitoring host computer of dual-port and the theory diagram of remote monitoring terminal; Monitoring host computer and each remote monitoring terminal are connected mutually, form single daisy chain; Comprise MCU and SHDSL chip at monitoring host computer and remote monitoring terminal inside; MCU receives and sends packet by the SHDSL chip, when the SHDSL chip receives packet, MCU judges according to the destination address information in the packet whether this remote monitoring terminal is the purpose terminal, if, then MCU wraps in this locality to data and handles, otherwise, MCU then is handed down to connected monitoring host computer or next stage remote monitoring terminal by the SHDSL chip with described packet, the remote control terminal of monitoring host computer or next stage carries out operation same as described above: at first by the packet of SHDSL chip reception from upper level, MCU judges according to the destination address information in the packet, handle packet or proceed to issue by the SHDSL chip.
SHDSL chip and MCU include Ethernet interface and 8BIT host interface, and in the utility model, MCU carries out initial configuration by the 8BIT host interface to the SHDSL chip by Ethernet interface transceive data bag.
The monitoring host computer of dual-port is meant that with remote monitoring terminal the SHDSL chip configuration of monitoring host computer and remote monitoring terminal becomes a pair of local side CO interface and terminal CP interface.In the utility model, CO and CP are predefined interface, the bi-directional that can realize packet by the CO interface that pre-defines and CP interface.When one of them CO (perhaps CP) interface is used for CP (perhaps CO) interface communication transceive data bag with monitoring host computer or upper level remote monitoring terminal, another one CP (perhaps CO) interface just is responsible for CO (perhaps CP) the interface communication transceive data bag with next stage remote monitoring terminal or monitoring host computer, the destination address information that comprises packet in CO (perhaps CP) interface in the packet of receiving, whether MCU number conforms to according to this destination address and local ident is judged and wants that packet is carried out this locality to be handled.
The local side CO interface in the SHDSL chip and the terminal CP interface of another SHDSL chip are to be connected in pairs, as a preferred embodiment, between CO interface and CP interface, can adopt a pair of unshielded twisted pair UTP directly to connect, can realize the full-duplex high-speed communication.Adopt UTP to connect and make that not only system extension is simple, and further reduced the overall routing cost.
When the SHDSL chip from CO (perhaps CP) when port is received packet: the SHDSL chip sends to MCU to data by Ethernet interface, MCU judges packet, if the destination address in the packet and local ident number conform to, then MCU handles data in this locality; If the destination address in the packet and local ident number do not conform to, then MCU sends it back the SHDSL chip by Ethernet interface with packet, make packet pass through another one port CP (perhaps CO) interface and transmit downwards, send to CO (perhaps CP) interface of another remote monitoring terminal.This process is called the relaying transmission of data.
Monitoring host computer and remote monitoring terminal also are responsible for carrying out local data collection and control task in the system, the packet that the transceive data flow is smaller, for example send alarm signal, blower fan, water pump, gate inhibition's information that extension set collects, accept central air-conditioning, camera, cradle head control signal that monitoring host computer is sent.Theory diagram as shown in Figure 2, MCU can pass through various peripheral interfaces such as CAN mouth, parallel I/O mouth, RS232 mouth and be connected with corresponding peripheral performance element, MCU with these packing data that collect after, mail to destination address by the SHDSL chip and carry out telecommunication, realize communication and control between remote monitoring main frame and the local various types of watch-dog.Remote monitoring terminal is when packets such as monitoring host computer transmission alarm signal, and which platform monitoring extension set monitoring host computer can judge data from according to the source address information in the packet, does respective handling subsequently.
In the theory diagram as shown in Figure 2, sound, video information can be selected to handle by the sound that is connected with MCU, video processing module unit.Because sound, video information data volume are bigger, usually adopt audio/video encoding/decoding chip (CODEC) to finish, the sound that MCU receives the SHDSL chip, video compression data bag are realized playing by loud speaker and display after decoding by the audio/video encoding/decoding chip again.The flow process of this rock noise, video information is opposite, and at first microphone and camera are finished audio-video collection, and the audio/video encoding/decoding chip is finished the audio frequency and video compressed encoding, and MCU arrives the SHDSL chip to data packet delivery by Ethernet interface, and the SHDSL chip is issued on network.
In order more clearly to set forth the utility model, below enumerate an application example of the present utility model: among Fig. 2, microphone 5 and camera 2 transmit audio and video analog signal to sound, video processing module unit 1 (being often referred to codec chip (CODEC)), codec chip (CODEC) is the audio, video data bag after compressing with analog signal conversion, MCU6 transmits the audio, video data bag by the Ethernet interface chip to SHDSL chip 7 then, and SHDSL chip 7 is with packet one of them transmission in local side CO interface or terminal CP interface.
If CO (perhaps CP) interface is received packet, send to MCU6 by Ethernet interface, address information in the MCU6 resolution data bag judges whether the notebook data bag should be received by this machine, if not local reception then MCU6 by Ethernet interface packet is sent back to SHDSL chip 7, transmit data by CP (perhaps CO) interface, realize the relaying forwarding.If it is by local reception that MCU6 judges, then packet is judged, if the audio frequency and video compressed data packets then sends to sound, video processing module unit 1, sound, video processing module unit 1 decompress the back to data by loud speaker 4, and display 3 carries out audio frequency, video playback; If other control signal then sends to corresponding peripheral performance element by relevant CAN mouth, parallel I/O mouth, RS232 mouth etc.
According to the different situations of sound, video processing module unit, can be with voice, the compression of video information, decompressing function are separately finished on different chips, can realize the function of native system equally.
In summary, include in the described packet: sound, video compression data, address information, the monitor message of each peripheral actuating equipment and control information etc.; Address information also comprises source address information and destination address information, source address information is to judge that with helping main frame the information that receives from which remote monitoring terminal, has then comprised packet and will be sent to which purpose terminal information in the destination address information.
For improving whole system operation efficient, after at the beginning whole system being powered on, can at first send query statement by monitoring host computer, collect the id information of each remote monitoring terminal, draw the particular location of each terminal, and send this positional information to each remote monitoring terminal and store, when so each terminal collects the packets need transmission afterwards, just can locate the purpose terminal rapidly according to this initial information that stores, after having known that the purpose terminal is in which position in the whole circuit, select the transmission direction of the circuit close, packet is sent on the purpose terminal with the fastest speed as whole system with the purpose terminal.
By such scheme as can be seen, in the remote network monitoring system of the present utility model, each monitoring host computer and remote monitoring terminal possess the dual-use function of transmission trunking and watch-dog simultaneously.Because the transmission of SHDSL chip is the signal of digitized processing, therefore when inserting new monitoring extension set, need not consider the problem of impedance matching, make System Expansion simple, greatly promoted the quantity that inserts extension set; The simultaneity factor communication anti-interference capability is strong, is far longer than the antijamming capability of transmission of analogue signal in the prior art; And the at present popular remote network monitoring system cost based on Ethernet and Optical Fiber Transmission of the equipment input of this remote network monitoring system and construction wiring is also much lower.
Embodiment two
Referring to Fig. 3, present embodiment is with the difference of embodiment one: the SHDSL chip configuration of monitoring host computer among the embodiment one and remote monitoring terminal becomes a pair of local side CO interface and terminal CP interface, and the SHDSL chip here is to be configured to two pairs of local side CO interfaces and terminal CP interface, and monitoring host computer under this configuration and remote monitoring terminal are called as the monitoring host computer and the remote monitoring terminal of four ports.
The benefit of this four configuring ports methods is, on the basis of original dual-port configuration, increased by one times transmission bandwidth, bandwidth such as 2M among the embodiment one, on the basis of original system, the SHDSL chip configuration is become four ports, then bandwidth has just become 4M, the collocation method of this increase bandwidth is simple, is applicable to the user that the broadband capacity requirement is big.The another one benefit of this configuration is also can not cause the communication disruption of whole system when one of them CO or CP interface have broken down, because also have an other CO or CP interface to use, but so will cause the decline of transmission bandwidth.
Identical in other technologies feature in the present embodiment and the foregoing description one do not repeat them here.
Embodiment three
Present embodiment provides several topological connected mode between monitoring host computer and each remote monitoring terminal.
Referring to Fig. 4 and Fig. 5, be two kinds of network topological diagrams.Fig. 4 is the network topological diagram of semi-ring list daisy chain, and Fig. 5 is the network topological diagram of loopful list daisy chain long distance control system.
We have known that the SHDSL chip comprises local side CO interface and terminal CP interface by embodiment one, terminal CP (CO) interface of local side CO (CP) interface and another SHDSL chip is to be connected in pairs, thereby and is exactly the connected mode of the mutual series connection that forms by the paired connection between above-mentioned CO and the CP interface between monitoring host computer and each remote monitoring terminal.
Different by the logarithm of CO and CP interface, the series connection between monitoring host computer and each remote monitoring terminal can be divided into two kinds of single daisy chain and two daisy chain.
Single daisy chain correspondence be the situation of having only a pair of local side CO interface and terminal CP interface in the SHDSL chip, comprising:
Semi-ring list daisy chain, a described monitoring host computer is connected with a remote monitoring terminal, and other remote monitoring terminal is connected in turn after the above-mentioned remote monitoring terminal;
Loopful list daisy chain, a described monitoring host computer is connected with a remote monitoring terminal, and other remote monitoring terminal is connected in turn after the described remote monitoring terminal, and last remote monitoring terminal is connected with described monitoring host computer, forms closed-loop path.
Wherein each remote monitoring terminal is the ornaments that in-line arranges in this connected mode suitable cell of semi-ring list daisy chain, and the advantage of these ornaments is that from the beginning each terminal moves tail to, and structure is simple relatively, and wiring cost is low; Shortcoming is that the dependence of each terminal is bigger, if a certain terminal is damaged in the circuit, certainly will influence the connectedness of whole circuit owing to connect in this way, can not realize intercoming mutually between the terminal before and after the breakpoint again.
For addressing this problem, the utility model provides a kind of loopful list daisy chain, a monitoring host computer is connected with a remote monitoring terminal, other remote monitoring terminal is connected in turn after the described remote monitoring terminal, last remote monitoring terminal is connected with described monitoring host computer again, forms an end to end closed-loop path each other.When adopting this connected mode in loop a certain terminal be damaged, still can realize one-way communication between each terminal before and after the breakpoint, guaranteed the connectedness of whole circuit.
Similarly, two daisy chain are used under the situation that the SHDSL chip includes two pairs of local side CO interfaces and terminal CP interface, also comprise two daisy chain of semi-ring and the two daisy chain of loopful, here two daisy chain define with respect to single daisy chain, be called single daisy chain under the situation of a pair of CO and CP interface, when two couples of CO and CP interface, be called two daisy chain.Respectively referring to accompanying drawing 6 and accompanying drawing 7, because these two kinds of series systems are identical with Fig. 4 with series system principle among Fig. 5, therefore the different just dual-ports and the difference of four ports will not be given unnecessary details here.Fig. 8 is for mixing the network topological diagram of single daisy chain long distance control system, taken into account the advantage of semi-ring list daisy chain and two kinds of series systems of loopful list daisy chain, though structure seems more complicated, adopt the configured in series mode of this mixed type in reality, to have very high practicality.Which kind of series system the user can freely select according to the concrete condition of each sub-district.
Above-described the utility model execution mode does not constitute the qualification to the utility model protection range.Any modification of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the claim protection range of the present utility model.
Claims (8)
1. a remote network monitoring system comprises monitoring host computer and a plurality of remote monitoring terminal, it is characterized in that: described monitoring host computer and described each remote monitoring terminal are connected mutually, form daisy chain;
Described monitoring host computer and described remote monitoring terminal include MCU and SHDSL chip, and described SHDSL chip is used for the transceive data bag; Described MCU judges according to the address information in the described packet that receives whether this locality is the purpose terminal, if, then described packet is handled in this locality, otherwise described MCU is handed down to connected monitoring host computer or next stage remote monitoring terminal by described SHDSL chip with described packet.
2. remote network monitoring system according to claim 1, it is characterized in that: described SHDSL chip and MCU include Ethernet interface and 8BIT host interface, described Ethernet interface is used to receive and dispatch described packet, and described 8BIT host interface is used for described MCU described SHDSL chip is carried out initial configuration.
3. remote network monitoring system according to claim 1, it is characterized in that: described SHDSL chip comprises local side CO interface and terminal CP interface, described local side CO interface is used to receive the packet of described monitoring host computer or upper level remote monitoring terminal, and described terminal CP interface is used to send described packet to next stage remote monitoring terminal or monitoring host computer;
Or
Described local side CP interface is used to receive the packet of described monitoring host computer or upper level remote monitoring terminal, and described terminal CO interface is used to send described packet to next stage remote monitoring terminal or monitoring host computer.
4. remote network monitoring system according to claim 3 is characterized in that, described SHDSL chip comprises a pair of local side CO interface and terminal CP interface or the two pairs of local side CO interfaces and terminal CP interface.
5. remote network monitoring system according to claim 3, it is characterized in that: connect in pairs between the local side CO interface in the described SHDSL chip and the terminal CP interface of another SHDSL chip, connect with a pair of unshielded twisted pair UTP between described local side CO interface and the terminal CP interface.
6. remote network monitoring system according to claim 1 is characterized in that: described MCU comprises peripheral interface CAN mouth, parallel I/O mouth, RS232 mouth, and described peripheral interface is used for communicating with peripheral performance element;
Described MCU also is used to control connected sound, video processing module unit, described sound, video processing module unit are used to gather local audio and vision signal, carry out passing to described MCU after the digitized processing, mail to the purpose terminal by the SHDSL chip by described MCU; And the audio, video data bag that described SHDSL chip is received is transferred to described sound, video processing unit by described MCU and handle back output in this locality.
7. remote network monitoring system according to claim 1 is characterized in that, comprises in the packet that described SHDSL chip receives: sound, video compression data, control information, address information; Described address information also comprises: source address information, destination address information.
8. remote network monitoring system according to claim 4 is characterized in that, described monitoring host computer and described each remote monitoring terminal are connected mutually and formed single daisy chain, comprising:
Semi-ring list daisy chain, a described monitoring host computer is connected with a remote monitoring terminal, and other remote monitoring terminal is connected in turn after the above-mentioned remote monitoring terminal;
Loopful list daisy chain, a described monitoring host computer is connected with a remote monitoring terminal, and other remote monitoring terminal is connected in turn after the described remote monitoring terminal, and last remote monitoring terminal is connected with described monitoring host computer, forms closed-loop path.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020505072 CN201821454U (en) | 2010-08-24 | 2010-08-24 | Remote network monitoring system |
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| CN 201020505072 CN201821454U (en) | 2010-08-24 | 2010-08-24 | Remote network monitoring system |
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| CN201821454U true CN201821454U (en) | 2011-05-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222379A (en) * | 2011-06-24 | 2011-10-19 | 无锡乾通电器有限公司 | Access controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222379A (en) * | 2011-06-24 | 2011-10-19 | 无锡乾通电器有限公司 | Access controller |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20180824 |