CN203872274U - Network camera monitoring system based on EoC - Google Patents
Network camera monitoring system based on EoC Download PDFInfo
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- CN203872274U CN203872274U CN201420081216.0U CN201420081216U CN203872274U CN 203872274 U CN203872274 U CN 203872274U CN 201420081216 U CN201420081216 U CN 201420081216U CN 203872274 U CN203872274 U CN 203872274U
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Abstract
The utility model discloses a network camera monitoring system based on EoC. The network camera monitoring system is characterized in that the network camera monitoring system comprises a monitoring front end (1), at least a monitoring terminal (2) and at least a network camera (3). The monitoring front end (1) comprises at least a BNC connector corresponding to the at-least monitoring terminal (2). Each BNC connector is connected with the monitoring terminal (2) through a coaxial cable. The monitoring terminal (2) is connected with the network camera (3). The monitoring front end (1) is in communication connection with a monitoring center. The beneficial effects of the network camera monitoring system are that a present and mature EoC coaxial network can be utilized, isolation among each monitoring terminal and safety are good, electricity taking is convenient, the transmission distance is far, management maintenance is convenient, the wiring cost is low, and the system utilization rate is high.
Description
Technical field
The utility model relates to monitoring technique field, more particularly, relates to a kind of network shooting crane monitoring system based on EoC.
Background technology
Web camera (IP Camera) is the digitizer of transmission Network Based, and web camera can directly access local area network by network output interface.Web camera is supported standard analog camera function, and can more systemic-function is provided and reduce cost for user.
Current network shooting crane monitoring system is all by traditional category-5 cable access network, to realize the data interaction between web camera and Surveillance center.Adopt the shortcoming of category-5 cable access to be: (1) transmission range is restricted; (2) this locality needs to web camera, provide power supply separately, but because web camera generally will be placed on some special places such as open air, doorway, power taking power supply difficulty, connects up and maintenance cost is very high, expand trouble, fail safe is low; (3) for existing analog video camera network application, when using web camera, need cloth category-5 cable again, cannot utilize existing coaxial network; (4) be unfavorable for centralized management, system availability is low.
Utility model content
The technical problems to be solved in the utility model is, utilizes the defect of category-5 cable access network for the above-mentioned network shooting crane monitoring system of prior art, and a kind of network shooting crane monitoring system based on EoC is provided.
The utility model solves the technical scheme that its technical problem adopts: a kind of network shooting crane monitoring system based on EoC is provided, comprises: front monitoring front-end, at least one road monitor terminal and at least one road web camera;
Described front monitoring front-end comprises at least one BNC connector corresponding with described at least one road monitor terminal, and described in each, BNC connector connects by coaxial cable Yu Yi road monitor terminal; Described monitor terminal is connected with web camera; The two-way communication of described front monitoring front-end Hai Yu Surveillance center connects;
Described front monitoring front-end is for mixing power supply be transferred to corresponding monitor terminal through different BNC connectors and coaxial cable from the Ethernet data bag from Surveillance center; Described monitor terminal is for changing and be transferred to described web camera by the signal coming through coaxial cable transmission;
Described web camera, also for collecting after monitor data, is converted into Ethernet data bag and is transferred to described monitor terminal; Described monitor terminal is also for described Ethernet data bag is converted to coaxial cable signal, and is transferred to described front monitoring front-end by coaxial cable; Described front monitoring front-end is transferred to Surveillance center after also changing for the coaxial cable signal to receiving.
In an embodiment of the present utility model, described front monitoring front-end comprises: power module, EoC administration module, voltage separation and monitoring and protection module, power supply and data-signal coupling distribution module;
Power module respectively and monitoring and protection module separated with voltage with described EoC administration module is connected; Described EoC administration module respectively and monitoring and protection module separated with described voltage, power supply is connected with Surveillance center with data-signal coupling distribution module; Described power supply is connected with described a plurality of BNC connectors with data-signal coupling distribution module;
Power module is also connected with external power source, is the first direct voltage and second direct voltage with scheduled voltage for the externally fed voltage transitions that external power source is provided;
Voltage separation and monitoring and protection module are used for described the first direct voltage to separate to the monitor terminal being connected with each BNC connector, to power respectively, and carry out electric current and voltage monitoring for each road monitor terminal;
EoC administration module is for being converted to the Ethernet data bag from Surveillance center the coaxial cable signal that is applicable to coaxial cable transmission;
Power supply and data-signal coupling distribution module are for being divided into multiple signals the coaxial cable signal from EoC administration module, the first direct voltage separated with from voltage and monitoring and protection module is coupled respectively, and is transferred to corresponding monitor terminal by different BNC connectors and coaxial cable;
Power supply and data-signal coupling distribution module are also for the coaxial cable signal from BNC connector is transferred to EoC administration module, and EoC administration module is also for being converted to coaxial cable signal Ethernet data bag and being transferred to Surveillance center.
In an embodiment of the present utility model, described EoC administration module comprises: microprocessor, data exchange module, first signal modular converter, the first coupling transformer, first network transformer and RJ45 gigabit network interface;
Microprocessor is connected with data exchange module; Data exchange module is connected with first network transformer with first signal modular converter respectively; The first coupling transformer is connected with first signal modular converter; RJ45 gigabit network interface is connected with first network transformer;
Described the first coupling transformer also by the inner connector of SMA respectively and monitoring and protection module separated with described voltage and power supply and the data-signal distribution module that is coupled be connected;
Described RJ45 gigabit network interface is for communicating to connect with Surveillance center.
In an embodiment of the present utility model, described monitor terminal comprises: data power separation module, power supply conversion and protection module, EoC terminal module and POE module;
Conversion is connected with protection module data power separation module with power supply with described EoC terminal module respectively; Power supply conversion is connected with POE module with EoC terminal module respectively with protection module; EoC terminal module is connected with POE module; POE module is connected with web camera; Data power separation module is connected with BNC connector;
Data power separation module is used for separating from coaxial cable signal and the power supply of front monitoring front-end BNC connector, and coaxial cable signal sends EoC terminal module to, and power supply is for powering with protection module to PoE module and power supply conversion;
Power supply conversion is used for power supply to convert the needed 12V direct current of EoC terminal module to protection module;
EoC terminal module is for being converted to Ethernet data bag by the coaxial cable signal from BNC connector;
POE module is used for Ethernet data bag to be transferred to web camera, and powers to web camera;
POE module also for future automatic network video camera Ethernet data bag be transferred to EoC terminal module, EoC terminal module also for future automatic network video camera Ethernet data bag be converted to coaxial cable signal and be transferred to front monitoring front-end by data power separation module.
In an embodiment of the present utility model, EoC terminal module comprises the second coupling transformer, secondary signal modular converter, physical layer interface chip and the second network transformer connecting successively.
In an embodiment of the present utility model, described web camera is connected with described monitor terminal by netting twine.
On the other hand, provide a kind of network shooting crane monitoring system based on EoC, comprising: front monitoring front-end and at least one road integrated monitoring terminal;
Described front monitoring front-end comprises at least one BNC connector corresponding with described at least one road integrated monitoring terminal, and described in each, BNC connector connects by coaxial cable Yu Yi road integrated monitoring terminal; The communication connection of described front monitoring front-end Hai Yu Surveillance center;
Described front monitoring front-end is for mixing power supply be transferred to corresponding integrated monitoring terminal through different BNC connectors and coaxial cable from the Ethernet data bag from Surveillance center;
Described integrated monitoring terminal, also for collecting after monitor data, is converted to the monitor data collecting after coaxial cable is believed and is transferred to described front monitoring front-end by coaxial cable; Described front monitoring front-end also sends to Surveillance center after the coaxial cable signal receiving is changed.
In an embodiment of the present utility model, described front monitoring front-end comprises: power module, EoC administration module, voltage separation and monitoring and protection module, power supply and data-signal coupling distribution module;
Power module respectively and monitoring and protection module separated with voltage with described EoC administration module is connected; Described EoC administration module respectively and monitoring and protection module separated with described voltage, power supply is connected with Surveillance center with data-signal coupling distribution module; Described power supply is connected with described a plurality of BNC connectors with data-signal coupling distribution module;
Power module is also connected with external power source, is the first direct voltage and second direct voltage with scheduled voltage for the externally fed voltage transitions that external power source is provided;
Voltage separation and monitoring and protection module are used for described the first direct voltage to separate to the integrated monitoring terminal being connected with each BNC connector, to power respectively, and carry out electric current and voltage monitoring for each road integrated monitoring terminal;
EoC administration module is for being converted to the Ethernet data bag from Surveillance center the coaxial cable signal that is applicable to coaxial cable transmission;
Power supply and data-signal coupling distribution module are for being divided into multiple signals the coaxial cable signal from EoC administration module, the first direct voltage electric coupling of and monitoring and protection module separated with from voltage respectively, and be transferred to corresponding integrated monitoring terminal by different BNC connectors and coaxial cable;
Power supply and data-signal coupling distribution module are also for the coaxial cable signal from BNC connector is transferred to EoC administration module, and EoC administration module is also for being converted to coaxial cable signal Ethernet data bag and being transferred to Surveillance center.
In an embodiment of the present utility model, described integrated monitoring terminal comprises: data power separation module, power supply conversion and protection module, EoC terminal module, web camera module;
Data power separation module is connected with EoC terminal module with protection module with power supply conversion respectively; Data power separation module is also connected with the BNC connector of front monitoring front-end; EoC terminal module is connected with web camera module with protection module with power supply conversion respectively;
Data power separation module is used for separating from coaxial cable signal and the power supply of front monitoring front-end BNC connector, and coaxial cable signal sends EoC terminal module to, and power supply is for powering to power supply conversion and protection module;
Power supply conversion converts the needed 12V direct current of EoC terminal module with protection module to power supply, and power supply is converted to 24V or the 12V direct current that web camera module needs;
EoC terminal module is used for the coaxial cable signal from BNC connector to be converted to Ethernet data bag, and is transferred to described web camera module;
Described web camera module is also for acquisition monitoring data; EoC terminal module is also for being converted to monitor data coaxial cable signal and being transferred to front monitoring front-end by data power separation module.
In an embodiment of the present utility model, EoC terminal module comprises the second coupling transformer, secondary signal modular converter, physical layer interface chip and the second network transformer connecting successively.
Implement the network shooting crane monitoring system based on EoC of the present utility model, there is following beneficial effect: can utilize the EoC coaxial network of existing maturation, isolation between each monitor terminal, fail safe are good; Power taking is convenient, long transmission distance; Management maintenance is convenient; Wiring cost is low, and system availability is high.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structured flowchart of the network shooting crane monitoring system based on EoC of the utility model the first embodiment;
Fig. 2 is the structured flowchart of the front monitoring front-end of the utility model the first embodiment;
Fig. 3 is the structured flowchart of the EoC administration module of the utility model the first embodiment;
Fig. 4 is the voltage separation of the utility model the first embodiment and the principle schematic of monitoring and protection module;
Fig. 5 is the structured flowchart of the monitor terminal of the utility model the first embodiment;
Fig. 6 is the structured flowchart of the EoC terminal module of the utility model the first embodiment;
Fig. 7 is the structured flowchart of the network shooting crane monitoring system based on EoC of the utility model the second embodiment;
Fig. 8 is the structured flowchart of the integrated monitoring terminal of the utility model the second embodiment.
Embodiment
For technical characterictic of the present utility model, object and effect being had more clearly, understand, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
The network shooting crane monitoring system of the utility model embodiment based on EoC, at the inner separated DC power supply of front monitoring front-end and data-signal, guarantees that Liao Weimei road monitor terminal provides separately data and power supply, and degree of safety is high, and isolation performance is good.
It referring to Fig. 1, is the structured flowchart of the network shooting crane monitoring system based on EoC of the utility model the first embodiment.The network shooting crane monitoring system based on EoC of the utility model the first embodiment comprises: front monitoring front-end 1, at least one road monitor terminal 2 and at least one road web camera 3.
Front monitoring front-end 1 comprises at least one BNC connector corresponding with at least one road monitor terminal 2 (in Fig. 1 not label).Each BNC connector connects by coaxial cable Yu Yi road monitor terminal 2, and each monitor terminal 2 is connected with a BNC connector of front monitoring front-end 1 by coaxial cable.Monitor terminal 2 Yu Yi road web cameras 3 in every road connect.Front monitoring front-end 1 is connected with Surveillance center (not shown in figure 1) two-way communication by category-5 cable, with access network based on ethernet, thereby monitor data is sent to Surveillance center and receives the information that Surveillance center sends.Preferably, web camera 3 can be connected with monitor terminal 2 by netting twine.
In signal uplink transmitting procedure: web camera 3 collects after monitor data (being video information), be converted into Ethernet data bag and (be transferred to monitor terminal 2 by netting twine; Monitor terminal 2 is converted to coaxial cable signal (signal that is applicable to coaxial cable transmission) by Ethernet data bag, and by coaxial cable, the signal after conversion is transferred to front monitoring front-end 1 according to HomePlug AV standard; The coaxial cable signal that 1 pair of front monitoring front-end receives is transferred to Surveillance center after changing.
Signal downlink transmitting procedure: Surveillance center sends Ethernet data bag to front monitoring front-end 1, front monitoring front-end 1 by power supply with after Ethernet data bag from Surveillance center mixes, through different BNC connectors and coaxial cable, be transferred to corresponding monitor terminal 2, web camera 3 is changed and be transferred to monitor terminal 2 by the signal coming through coaxial cable transmission.
It referring to Fig. 2, is the structured flowchart of the front monitoring front-end of the utility model the first embodiment.Front monitoring front-end 1 comprises: power module 11, EoC administration module 12, voltage separation and monitoring and protection module 13, power supply and data-signal coupling distribution module 14 and a plurality of BNC connector (in Fig. 2 not label).
Power module 11 respectively and monitoring and protection module 13 separated with voltage with EoC administration module 12 is connected, and EoC administration module 12 respectively and monitoring and protection module 13 separated with voltage, power supply is connected with data-signal coupling distribution module 14He Surveillance center.Power supply is connected with a plurality of BNC connectors with data-signal coupling distribution module 14.Each BNC connector Yu Yi road monitor terminal 2 connects.
Power module 11 is also connected with external power source, for example, for the externally fed voltage (, 220V electric main) that external power source is provided, is converted to the first direct voltage and second direct voltage with scheduled voltage.Preferably, in embodiment of the present utility model, the first direct voltage is 48V direct current, and the second direct voltage is 12V direct current.Wherein, 48V direct current is for powering to monitor terminal 2, and 12V direct current is for powering to EoC administration module 12.Power module 11 can adopt Switching Power Supply or adopt the circuit being comprised of rectifier, filter circuit etc. to realize.
EoC administration module 12 is applicable to for the Ethernet data bag from Surveillance center is converted to the coaxial cable signal that coaxial cable transmits, or the coaxial cable signal from monitor terminal 2 is converted to Ethernet data bag and is transferred to Surveillance center.
It referring to Fig. 3, is the structured flowchart of the EoC administration module 12 of the utility model the first embodiment.EoC administration module 12 comprises microprocessor 121, data exchange module 122, first signal modular converter 123 and the first coupling transformer 124 connecting successively, also comprise the memory 125, synchronous DRAM 126 and the serial ports 127 that are connected with microprocessor 121 respectively, and comprise the first network transformer 128 being connected with data exchange module 122, the RJ45 gigabit network interface 129 being connected with first network transformer 128.
Microprocessor 121 is for the transfer process between Control ethernet packet and coaxial cable signal, and controls the division of vlan, the assignment of traffic on each road, signal to noise ratio are obtained, Line Attenuation statistics etc.Should be understood that microprocessor 121 can realize above-mentioned functions by moving existing network management system.Thus, by EoC administration module 12, can to connect terminal (being monitor terminal 2), be managed for configuration easily, and the signal to noise ratio of circuit, Line Attenuation etc. are monitored.It is the chip realization of 88E6218 that microprocessor 121 can adopt model, also can adopt the chip of other models to realize.
Data exchange module 122 is for realizing exchanges data.Data exchange module 122 can adopt AR8327 chip.
First signal modular converter 123 is for realizing the too conversion between network data bag and coaxial cable signal.First signal modular converter 123 can adopt chip AR7410 and AR1550 to realize.
The first coupling transformer 124 can be by the inner connector of SMA and monitoring and protection module 13 separated with voltage is connected, by supply socket and power supply and the data-signal distribution module 14 that is coupled, be connected.RJ45 gigabit network interface 129 is for communicating to connect with Surveillance center.
Memory 125 and synchronous DRAM 126 in EoC administration module 12 are respectively used to storage program and data.Serial ports 127, for realizing serial communication, can now be debugged configuration by this cause for gossip.
Continuation is referring to Fig. 2; in the first embodiment of the present utility model; voltage separation and monitoring and protection module 13 are for separating 48V direct current to power to the monitor terminal 2 being connected with each BNC connector respectively; and carry out electric current and voltage monitoring for each road monitor terminal 2; make a certain route cause line short or web camera to damage in the situation of short circuit in outside cause specific, can not have influence on the monitoring operation of All other routes.
Referring to Fig. 4, be the voltage separation of the utility model the first embodiment and the principle schematic of monitoring and protection module.One road 48V direct current is divided into multichannel 48V direct current (48V1,48V2 ...), each road 48V direct current is provided with sample circuit 131, control circuit 132 and switching circuit 133.The monitoring and protection principle of voltage separation and monitoring and protection module 13 is: voltage and reference voltage that control circuit 132 detects sample circuit 131 compare; and according to conducting or the cut-off of comparative result control switch circuit 133, to realize the monitoring of each road monitor terminal and protection.When the load abnormal on a certain road (monitor terminal or the web camera being connected with monitor terminal are abnormal); the electric current that flows through this road can become suddenly large; now; the voltage that sample circuit 131 detects will be greater than reference voltage; control circuit 132 control switch circuit 133 cut-offs; to disconnect the power supply of Dui Gai road load, realize thus defencive function.In embodiment of the present utility model, switching circuit 133 can adopt the realizations such as relay, metal-oxide-semiconductor.Sample circuit 131 can, by being comprised of sampling resistor and amplifier etc., mainly carry out opening and closure of control switch by the collection of immediate current is judged.Control circuit 132 can adopt the realizations such as single-chip microcomputer, ARM, MCU.
Continuation is referring to Fig. 2; in the first embodiment of the present utility model; power supply and data-signal coupling distribution module 14 are for being divided into multiple signals the coaxial cable signal from EoC administration module 12; be coupled with the 48V direct current of and monitoring and protection module 13 separated from voltage respectively, and be transferred to corresponding monitor terminal 2 by different BNC connectors and coaxial cable.Power supply and data-signal coupling distribution module 14 are also for being transferred to EoC administration module by the coaxial cable signal from BNC connector.Power supply can for example, be comprised of inductance and electric capacity permutation and combination design (in parallel) with data coupling distribution module 14, thus, realizes the coupling of data-signal and power supply signal.In addition, power supply and data coupling distribution module 14 also can adopt the data-signal of prior art and power supply signal coupling principle to realize.
It referring to Fig. 5, is the structured flowchart of the monitor terminal of the utility model the first embodiment.Monitor terminal 2 comprises: data power separation module 21, power supply conversion and protection module 23, EoC terminal module 22, POE module 24.Data power separation module 21 is connected with protection module 23 with EoC terminal module 22, power supply conversion respectively.Power supply conversion is connected with POE module 24 with EoC terminal module 22 respectively with protection module 23.EoC terminal module 22 is connected with POE module 24.POE module 24 is connected with web camera 3 by netting twine.Data power separation module 21 is connected with BNC connector.
Data power separation module 21 is for separating coaxial cable signal and the power supply (48V direct current) of the BNC connector from front monitoring front-end 1; coaxial cable signal sends EoC terminal module 22 to, and 48V direct current is for powering with protection module 23 to PoE module 24 and power supply conversion.Data power separation module 21 can for example, be realized by combination (in parallel) circuit of electric capacity and inductance, due to the logical AC signal of electric capacity, therefore, data-signal can pass through, but 48V direct current cannot pass through, and inductance can filtering data-signal, realizes thus the separated of data-signal and power supply signal.In addition, data power separation module 21 also can adopt the separate mode of prior art to carry out separation, for example, adopts LT-POE-PD separator.
Power supply conversion converts the needed 12V direct current of EoC terminal module 22 with protection module 23 to 48V direct current.Power supply conversion can realize by DC/DC with protection module 23.
EoC terminal module 22 carries out the mutual of data based on HomePlug AV or IEEE1901 standard and front monitoring front-end 1, realizes the conversion between ethernet signal and coaxial cable signal.It referring to Fig. 6, is the structured flowchart of the EoC terminal module of the utility model the first embodiment.EoC terminal module 22 comprises the second coupling transformer 221, secondary signal modular converter 222, physical layer interface chip 223 and the second network transformer 224 connecting successively.Secondary signal modular converter 222 is realized by AR7411 and AR1500 chip.Physical layer interface chip 223 is realized by KSZ8041NL chip.
EoC terminal module 22 is according to HomePlug AV or IEEE1901 standard, and descending reception front monitoring front-end 1 is dealt into the data on coaxial cable, is converted into Ethernet data bag, then is transferred to web camera 3.The Ethernet data bag of uplink receiving web camera 3 transmission, is converted at coaxial cable signal, realizes thus two-way interactive.
POE module 24 has POE function of supplying power, for realizing to web camera 3 power supplies of supporting 802.3af or 802.3at standard.The POE function of supplying power of POE module 24 can open or close, and POE module 24 can be given the web camera power supply of supporting or do not support POE agreement.On netting twine, transmit Ethernet data bag and 48V direct current is offered to web camera 3.POE module 24 is connected by netting twine with web camera 3.POE module 24 can adopt LTC4274 or MAX5971A chip to realize.
In the first embodiment of the present utility model, in downstream signal transmitting procedure, front monitoring front-end 1 is transferred to corresponding monitor terminal 2 from the Ethernet data bag mixing from upstream Surveillance center through different BNC connector and coaxial cable power supply, and monitor terminal 2 converts Ethernet data bag to coaxial cable signal again and offers web camera 3.In uplink signal transmissions process, web camera 3 acquisition monitoring data (comprising image and acoustic information), the Ethernet data that is converted into standard is wrapped and is passed to monitor terminal 2, and monitor terminal 2 is processed and Ethernet data bag is converted to coaxial cable signal sent front monitoring front-end 1 to; Front monitoring front-end 1 is transferred to Surveillance center after changing, and by Surveillance center, carries out analyzing and processing.
It referring to Fig. 7, is the structured flowchart of the network shooting crane monitoring system based on EoC of the utility model the second embodiment.This system comprises: front monitoring front-end 1 and at least one road integrated monitoring terminal 2 '.Front monitoring front-end 1 comprises at least one BNC connector corresponding with at least one road integrated monitoring terminal 2 ', and each BNC connector connects by coaxial cable Yu Yi road integrated monitoring terminal 2 '; The two-way communication of front monitoring front-end 1 Hai Yu Surveillance center connects.
Front monitoring front-end 1 is for mixing power supply be transferred to corresponding integrated monitoring terminal 2 ' through different BNC connectors and coaxial cable from the Ethernet data bag from Surveillance center.
Integrated monitoring terminal 2 ', also for collecting after monitor data, is converted to the monitor data collecting after coaxial cable is believed and is transferred to front monitoring front-end 1 by coaxial cable; Front monitoring front-end 1 also sends to Surveillance center after the coaxial cable signal receiving is changed.
In the second embodiment of the present utility model, constitute and function all with the first embodiment of front monitoring front-end 1 is identical, difference is only: voltage separation and monitoring and protection module 13 be for 48V direct current being separated to power to respectively the integrated monitoring terminal 2 ' be connected with each BNC connector, and carries out electric current and voltage monitoring for each road integrated monitoring terminal 2 '; And power supply and data-signal coupling distribution module 14 is for being divided into multiple signals a signal for the applicable coaxial cable transmission from EoC administration module 12; be coupled with the 48V direct current of and monitoring and protection module 13 separated from voltage respectively, and be transferred to corresponding integrated monitoring terminal 2 ' by different BNC connectors and coaxial cable.Therefore,, in the second embodiment of the present utility model, repeat no more structure and the function of other modules of front monitoring front-end 1.
In the second embodiment of the present utility model, integrated monitoring terminal 2 ' combines the monitor terminal 2 in the first embodiment with web camera 3.In practice, monitor terminal in the first embodiment 2 can be placed on to integrated monitoring terminal 2 ' inside as a platelet, and make monitor terminal 2 for example, by internal plug (, inner winding displacement) interconnection network video camera 3, obtain thus an integrated integrated monitoring terminal 2 '.
It referring to Fig. 8, is the structured flowchart of the integrated monitoring terminal of the utility model the second embodiment.Integrated monitoring terminal 2 ' comprising: data power separation module 21 ', power supply conversion and protection module 23 ', EoC terminal module 22 ', web camera module 24 '.Data power separation module 21 ' is connected with EoC terminal module 22 ' with protection module 23 ' with power supply conversion respectively; Data power separation module 21 ' is also connected with the BNC connector of front monitoring front-end 1; EoC terminal module 22 ' is connected with web camera module 24 ' with protection module 23 ' with power supply conversion respectively.
Data power separation module 21 ' is for separating coaxial cable signal and the power supply (48V direct current) of the BNC connector from front monitoring front-end 1; coaxial cable signal sends EoC terminal module 22 ' to, and power supply (48V direct current) is for powering to power supply conversion and protection module 23 '.Data power separation module 21 can for example, be realized by the combinational circuit (in parallel) of electric capacity and inductance.
Power supply conversion converts the needed 12V direct current of EoC terminal module 22 ' with protection module 23 ' to power supply (48V direct current), and power supply (48V direct current) is converted to 24V or the 12V direct current that web camera module 24 ' needs.
EoC terminal module 22 ' carries out the mutual of data based on HomePlug AV or IEEE1901 standard and front monitoring front-end 1, realizes the conversion between Ethernet data bag and coaxial cable signal.The structure of EoC terminal module 22 ' and principle are identical with the EoC terminal module 22 of the first embodiment, do not repeat them here.
Web camera module 24 ' acquisition monitoring data, are converted into the Ethernet data bag of standard.EoC terminal module 22 ' is converted to coaxial cable signal by Ethernet data bag.
In the second embodiment of the present utility model, downstream signal passes through different coaxial cables 48V power supply with the data-signal mixing of Ethernet from upstream Surveillance center by front monitoring front-end 1 simultaneously and is transferred to corresponding monitor terminal 2 ', and monitor terminal 2 ' converts general data-signal to coaxial cable signal again and offers web camera module 24 '.Upward signal converts coaxial cable signal to vision signal and sends front monitoring front-end 1 to, then is transferred to Surveillance center by front monitoring front-end 1.
In embodiment of the present utility model, preferred, EoC administration module 12 can be configured to supports the above transfer of data of 320Mbps, supports 64 monitor terminals (or integrated monitoring terminal).Therefore, front monitoring front-end 1 can be designed to the BNC connector output of multichannel as required, 15M traffic transport high-definition video signal is distributed on Ruo Mei road, maximum can design 20 BNC connector outputs, thus, can support to access 20 monitor terminals 2 and 20 web camera 3(or integrated monitoring terminal).For the analog video camera network of original employing BNC coaxial cable, while setting up network shooting crane monitoring system, without carrying out circuit replacement, can save the signal transmission cable of arranging monitor terminal, implement convenient and saving cost.
The network shooting crane monitoring system of the utility model embodiment based on EoC is at the inner separated DC power supply of front monitoring front-end 1 and data-signal, by different BNC connectors, export, guarantee that Liao Weimei road monitor terminal provides separately data and power supply, degree of safety is high, and isolation is good.
The EoC network of the network shooting crane monitoring system of the utility model embodiment based on EoC based on HomePlug AV standard can transmit power supply with signal simultaneously, when having solved long Distance Transmission problem, also solved web camera power taking problem.
The network shooting crane monitoring system of the utility model embodiment based on EoC converts ethernet signal to the signal that utilizes coaxial line transmission, utilize existing HomePlug AV coaxial transmission and coaxial finger assignments technology, convenient layout and cost are low, work in low-frequency range, link attenuation is less, disturb littlely, coverage is large; And the DC power supply of 48V can be coupled into coaxial cable transmits together with signal, power supply is same to be provided and is controlled by front monitoring front-end, effectively solve the problem of current outdoor monitoring camera cloth power taking line difficulty, save the cost of independent layout power cable, saved manpower and maintenance cost simultaneously.Utilize coaxial transmission technology, transmission range has had access to very large lifting than traditional Ethernet, maximum transmission distance can reach 1000 meters, solved and used the five traditional restrictions of class netting twine to transmission range, for needs, the monitoring of long Distance Transmission being provided and externally cannot providing in the scheme of power supply has very large advantage.。In addition, adopt this monitor mode can be clearly from front monitoring front-end 1, to understand the situation of whole circuit, comprise SNR(signal to noise ratio), Line Attenuation etc., convenient to each circuit and web camera is monitored and fault location, maintenance and management is convenient.
In the network shooting crane monitoring system of the utility model embodiment based on EoC, front monitoring front-end, by BNC connector, carries out branch's transmission by data and power supply, and each road transmission is separated, and a road has fault can not have influence on the monitoring on other roads.
In addition in the process of implementing, for the analog video camera network that adopts original BNC coaxial cable, while setting up network shooting crane monitoring system, without carrying out circuit replacement, can save power cable and the signal transmission cable of arranging monitor terminal, implement convenient and saving cost.
By reference to the accompanying drawings embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not departing from the scope situation that the utility model aim and claim protect, also can make a lot of forms, within these all belong to protection of the present utility model.
Claims (10)
1. the network shooting crane monitoring system based on EoC, is characterized in that, comprising: front monitoring front-end (1), at least one road monitor terminal (2) and at least one road web camera (3);
Described front monitoring front-end (1) comprises at least one BNC connector corresponding with described at least one road monitor terminal (2), and described in each, BNC connector connects by coaxial cable Yu Yi road monitor terminal (2); Described monitor terminal (2) is connected with web camera (3); The communication connection of described front monitoring front-end (1) Hai Yu Surveillance center;
Described front monitoring front-end (1) is for mixing power supply be transferred to corresponding monitor terminal (2) through different BNC connectors and coaxial cable from the Ethernet data bag from Surveillance center; Described monitor terminal (2) is for changing and be transferred to described web camera (3) by the signal coming through coaxial cable transmission;
Described web camera (3), also for collecting after monitor data, is converted into Ethernet data bag and is transferred to described monitor terminal (2); Described monitor terminal (2) is also for described Ethernet data bag is converted to coaxial cable signal, and is transferred to described front monitoring front-end (1) by coaxial cable; Described front monitoring front-end (1) is transferred to Surveillance center after also changing for the coaxial cable signal to receiving.
2. the network shooting crane monitoring system based on EoC according to claim 1, it is characterized in that, described front monitoring front-end (1) comprising: power module (11), EoC administration module (12), voltage separation and monitoring and protection module (13), power supply and data-signal coupling distribution module (14);
Power module (11) is connected with voltage separation and monitoring and protection module (13) with described EoC administration module (12) respectively; Described EoC administration module (12) respectively and monitoring and protection module (13) separated with described voltage, power supply is connected with Surveillance center with data-signal coupling distribution module (14); Described power supply is connected with described a plurality of BNC connectors with data-signal coupling distribution module (14);
Power module (11) is also connected with external power source, is the first direct voltage and second direct voltage with scheduled voltage for the externally fed voltage transitions that external power source is provided;
Voltage separation and monitoring and protection module (13) be for described the first direct voltage being separated to power to respectively the monitor terminal (2) is connected with each BNC connector, and carry out electric current and voltage monitoring for each road monitor terminal (2);
EoC administration module (12) is for being converted to the Ethernet data bag from Surveillance center the coaxial cable signal that is applicable to coaxial cable transmission;
Power supply and data-signal coupling distribution module (14) are for being divided into multiple signals the coaxial cable signal from EoC administration module (12), the first direct voltage separated with from voltage and monitoring and protection module (13) is coupled respectively, and is transferred to corresponding monitor terminal (2) by different BNC connectors and coaxial cable;
Power supply and data-signal coupling distribution module (14) are also for the coaxial cable signal from BNC connector is transferred to EoC administration module (12), and EoC administration module (12) is also for being converted to coaxial cable signal Ethernet data bag and being transferred to Surveillance center.
3. the network shooting crane monitoring system based on EoC according to claim 2, it is characterized in that, described EoC administration module (12) comprising: microprocessor (121), data exchange module (122), first signal modular converter (123), the first coupling transformer (124), first network transformer (128) and RJ45 gigabit network interface (129);
Microprocessor (121) is connected with data exchange module (122); Data exchange module (122) is connected with first network transformer (128) with first signal modular converter (123) respectively; The first coupling transformer (124) is connected with first signal modular converter (123); RJ45 gigabit network interface (129) is connected with first network transformer (128);
Described the first coupling transformer (124) also by the inner connector of SMA respectively and monitoring and protection module (13) and power supply and data-signal separated with the described voltage distribution module (14) that is coupled be connected;
Described RJ45 gigabit network interface (129) is for communicating to connect with Surveillance center.
4. the network shooting crane monitoring system based on EoC according to claim 1, it is characterized in that, described monitor terminal (2) comprising: data power separation module (21), power supply conversion and protection module (23), EoC terminal module (22) and POE module (24);
Conversion is connected with protection module (23) data power separation module (21) with power supply with described EoC terminal module (22) respectively; Power supply conversion is connected with POE module (24) with EoC terminal module (22) respectively with protection module (23); EoC terminal module (22) is connected with POE module (24); POE module (24) is connected with web camera (3); Data power separation module (21) is connected with BNC connector;
Data power separation module (21) is separated from coaxial cable signal and the power supply of front monitoring front-end (1) BNC connector for handle, coaxial cable signal sends EoC terminal module (22) to, and power supply is for powering with protection module (23) to PoE module (24) and power supply conversion;
Power supply conversion and protection module (23) are for converting power supply to the needed 12V direct current of EoC terminal module (22);
EoC terminal module (22) is for being converted to Ethernet data bag by the coaxial cable signal from BNC connector;
POE module (24) is for Ethernet data bag being transferred to web camera (3), and gives web camera (3) power supply;
POE module (24) is also transferred to EoC terminal module (22) for the Ethernet data bag of automatic network video camera in future (3), and EoC terminal module (22) is also converted to coaxial cable signal and is transferred to front monitoring front-end (1) by data power separation module (21) for the Ethernet data bag of automatic network video camera in future (3).
5. the network shooting crane monitoring system based on EoC according to claim 4, it is characterized in that, EoC terminal module (22) comprises the second coupling transformer (221), secondary signal modular converter (222), physical layer interface chip (223) and the second network transformer (224) connecting successively.
6. according to the network shooting crane monitoring system based on EoC described in claim 1-5 any one, it is characterized in that, described web camera (3) is connected with described monitor terminal (2) by netting twine.
7. the network shooting crane monitoring system based on EoC, is characterized in that, comprising: front monitoring front-end (1) and at least one road integrated monitoring terminal (2 ');
Described front monitoring front-end (1) comprises at least one BNC connector corresponding with described at least one road integrated monitoring terminal (2 '), and described in each, BNC connector connects by coaxial cable Yu Yi road integrated monitoring terminal (2 '); The communication connection of described front monitoring front-end (1) Hai Yu Surveillance center;
Described front monitoring front-end (1) is for mixing power supply be transferred to corresponding integrated monitoring terminal (2 ') through different BNC connectors and coaxial cable from the Ethernet data bag from Surveillance center;
Described integrated monitoring terminal (2 '), also for collecting after monitor data, is converted to the monitor data collecting after coaxial cable is believed and is transferred to described front monitoring front-end (1) by coaxial cable; Described front monitoring front-end (1) also sends to Surveillance center after the coaxial cable signal receiving is changed.
8. the network shooting crane monitoring system based on EoC according to claim 7, it is characterized in that, described front monitoring front-end (1) comprising: power module (11), EoC administration module (12), voltage separation and monitoring and protection module (13), power supply and data-signal coupling distribution module (14);
Power module (11) is connected with voltage separation and monitoring and protection module (13) with described EoC administration module (12) respectively; Described EoC administration module (12) respectively and monitoring and protection module (13) separated with described voltage, power supply is connected with Surveillance center with data-signal coupling distribution module (14); Described power supply is connected with described a plurality of BNC connectors with data-signal coupling distribution module (14);
Power module (11) is also connected with external power source, is the first direct voltage and second direct voltage with scheduled voltage for the externally fed voltage transitions that external power source is provided;
Voltage separation and monitoring and protection module (13) be for described the first direct voltage being separated to power to respectively the integrated monitoring terminal (2 ') is connected with each BNC connector, and carry out electric current and voltage monitoring for each road integrated monitoring terminal (2 ');
EoC administration module (12) is for being converted to the Ethernet data bag from Surveillance center the coaxial cable signal that is applicable to coaxial cable transmission;
Power supply and data-signal coupling distribution module (14) are for being divided into multiple signals the coaxial cable signal from EoC administration module (12), the first direct voltage electric coupling of and monitoring and protection module (13) separated with from voltage respectively, and be transferred to corresponding integrated monitoring terminal (2 ') by different BNC connectors and coaxial cable;
Power supply and data-signal coupling distribution module (14) are also for the coaxial cable signal from BNC connector is transferred to EoC administration module (12), and EoC administration module (12) is also for being converted to coaxial cable signal Ethernet data bag and being transferred to Surveillance center.
9. the network shooting crane monitoring system based on EoC according to claim 7, it is characterized in that, described integrated monitoring terminal (2 ') comprising: data power separation module (21 '), power supply conversion and protection module (23 '), EoC terminal module (22 '), web camera module (24 ');
Data power separation module (21 ') is connected with EoC terminal module (22 ') with protection module (23 ') with power supply conversion respectively; Data power separation module (21 ') is also connected with the BNC connector of front monitoring front-end (1); EoC terminal module (22 ') is connected with web camera module (24 ') with protection module (23 ') with power supply conversion respectively;
Data power separation module (21 ') is separated from coaxial cable signal and the power supply of front monitoring front-end (1) BNC connector for handle, coaxial cable signal sends EoC terminal module (22 ') to, and power supply is for powering to power supply conversion and protection module (23 ');
Power supply conversion converts the needed 12V direct current of EoC terminal module (22 ') with protection module (23 ') to power supply, and power supply is converted to 24V or the 12V direct current that web camera module (24 ') needs;
EoC terminal module (22 ') is for the coaxial cable signal from BNC connector is converted to Ethernet data bag, and is transferred to described web camera module (24 ');
Described web camera module (24 ') is also for acquisition monitoring data; EoC terminal module (22 ') is also for being converted to monitor data coaxial cable signal and being transferred to front monitoring front-end (1) by data power separation module (21 ').
10. the network shooting crane monitoring system based on EoC according to claim 9, it is characterized in that, EoC terminal module (22 ') comprises the second coupling transformer, secondary signal modular converter, physical layer interface chip and the second network transformer connecting successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420081216.0U CN203872274U (en) | 2014-02-25 | 2014-02-25 | Network camera monitoring system based on EoC |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420081216.0U CN203872274U (en) | 2014-02-25 | 2014-02-25 | Network camera monitoring system based on EoC |
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| CN203872274U true CN203872274U (en) | 2014-10-08 |
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| CN201420081216.0U Expired - Fee Related CN203872274U (en) | 2014-02-25 | 2014-02-25 | Network camera monitoring system based on EoC |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104994323A (en) * | 2015-07-21 | 2015-10-21 | 常熟市高事达光电科技有限公司 | Outdoor EOC (Ethernet Over Cable) device |
| CN107612821A (en) * | 2017-09-06 | 2018-01-19 | 东莞市博成硅胶制品有限公司 | A kind of IP DTV converters and its application |
| CN107612766A (en) * | 2017-08-02 | 2018-01-19 | 东南大学 | A kind of netting twine simulator and the highly dense net-port device with one integrated approach of POE test circuits |
| CN111586347A (en) * | 2020-04-15 | 2020-08-25 | 桂林长海发展有限责任公司 | Camera front-end data processing device and method and storage medium |
-
2014
- 2014-02-25 CN CN201420081216.0U patent/CN203872274U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104994323A (en) * | 2015-07-21 | 2015-10-21 | 常熟市高事达光电科技有限公司 | Outdoor EOC (Ethernet Over Cable) device |
| CN104994323B (en) * | 2015-07-21 | 2017-10-10 | 苏州市高事达信息科技股份有限公司 | Field EOC equipment |
| CN107612766A (en) * | 2017-08-02 | 2018-01-19 | 东南大学 | A kind of netting twine simulator and the highly dense net-port device with one integrated approach of POE test circuits |
| CN107612821A (en) * | 2017-09-06 | 2018-01-19 | 东莞市博成硅胶制品有限公司 | A kind of IP DTV converters and its application |
| CN111586347A (en) * | 2020-04-15 | 2020-08-25 | 桂林长海发展有限责任公司 | Camera front-end data processing device and method and storage medium |
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Assignee: Shenzhen Richerlink Technology Co.,Ltd. Assignor: Chen Weihan Contract record no.: 2015440020239 Denomination of utility model: Network camera monitoring system based on EoC Granted publication date: 20141008 License type: Exclusive License Record date: 20150701 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
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Effective date of registration: 20160629 Address after: 518000, Guangdong, Longhua, Shenzhen New District, Longhua street, Qing Xiang Road, Bao science and Technology Park, 7 blocks B, building 15, GHIJKLM units Patentee after: Shenzhen Richerlink Technology Co.,Ltd. Address before: 518000 Guangdong city of Shenzhen province Nanshan District South Road 9, South East Garden 6 2E Patentee before: Chen Weihan |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20141008 Termination date: 20200225 |