CN203490373U - Photoelectric hybrid array detection system - Google Patents
Photoelectric hybrid array detection system Download PDFInfo
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- CN203490373U CN203490373U CN201320539976.7U CN201320539976U CN203490373U CN 203490373 U CN203490373 U CN 203490373U CN 201320539976 U CN201320539976 U CN 201320539976U CN 203490373 U CN203490373 U CN 203490373U
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Abstract
The utility model belongs to the field of signal detection, and provides a photoelectric hybrid array detection system with low noise, high sensitivity, large dynamic range and high anti-interference capability. The photoelectric hybrid array detection system comprises a data recording center, data transmission modules, signal acquisition modules, a light source module, a photoelectric conversion module, an optical fiber hydrophone and optical fibers. The data recording center transmits control commands to all the data transmission modules, and receives detection data transmitted from the data transmission modules, and performs storage and corresponding processing on the data. The signal acquisition modules and the data communication modules are in data communication by RS485 interfaces or SPI interfaces or level matching direct connection. The data transmission modules are sequentially connected in series, and the control commands transmitted from the data recording center are transmitted sequentially to the data transmission module at the end. The photoelectric hybrid array detection system is mainly used for gas detection.
Description
Technical field
The utility model belongs to acquisition of signal field, specifically, relates to photoelectricity mixing array detection system.
Technical background
Array detection system has a wide range of applications at aspects such as seismic prospecting, engineering exploration, the warning of bank base, towed sonars
[1-3].Array detection system mainly forms by surveying cable section and data recording center two parts, and survey cable section, mainly signal acquisition module and data transmission module, consists of.Traditional array detection system is mainly divided into two kinds, and a kind of is full cable array detection system [4], and a kind of is full optical cable array detection system
[3,5].Full cable array detection system refers to that surveying cable intersegmental part all adopts electric signal to carry out transmission information, and transmission medium also adopts electric wire entirely, and sensor is generally piezoelectric hydrophone; Full optical cable array detection system refers to that surveying cable intersegmental part all adopts light signal to carry out transmission information, and transmission medium is also optical fiber entirely, and sensor is generally fibre optic hydrophone.Compare with piezoelectric hydrophone, fibre optic hydrophone has the advantages such as self noise is little, highly sensitive, dynamic range is large, antijamming capability is strong
[6]so the signal quality of full cable array detection system acquisition does not have the height of full optical cable array detection system.
Yet, to compare with electric wire, optical fiber transmission medium has following shortcoming: easy fracture and bad mechanical strength, the shunting of signal and coupling difficulty, when fibercuts, need special optical fiber fusion splicing machine to connect
[7-8], the fusion procedure of optical fiber is more complicated than the welding process of electric wire, so transmission medium be in the use procedure at the scene of full optical cable array detection system of optical fiber entirely, and easily damage, reliability is not high.
[1]M.Lasky,Richard?D.Doolittle,B.D.Simmons,et?al.Recent?progress?in?towed?hydrophone?array?research[J].IEEE?Journal?of?Oceanic?Engineering,2004,29(2):374-387.
[2]Stanley?G.Lemon.Towed-array?history,1917-2003[J].IEEE?Journal?of?Oceanic?Engineering,2004,29(2):365-373.
[3] Liu Meng Buddhist nunnery. starboard ambiguity of towed linear array sonar technical development summary [J]. acoustics and electronic engineering, 2006,83 (3): 1-5.
[4] Wu Kang. sonar towed array cable gathers transmission technology research [D]. master thesis, University Of Tianjin, 2010.
[5] Zhu Zhenfeng. the high-speed time-division multiplex systematic study [D] based on Scale Fiber-Optic Hydrophone Array. master thesis, the National University of Defense technology, 2004
[6] Zhang Renhe, Ni Ming. the principle of fibre optic hydrophone and application [J]. physics, 2004,33 (7): 503-507.
[7] Wang Limeng. optical fiber Damage and Fracture signature analysis [J]. optical communication research, 1994,72 (4): 30-38.
[8] Han Peng. the mechanical strength properties of optical fiber research [D] under high temperature. master thesis, South China Science & Engineering University, 2013.
Summary of the invention
For overcoming the deficiencies in the prior art, the utility model is intended to, and the photoelectricity mixing array that a kind of self noise is little, highly sensitive, dynamic range is large, antijamming capability is strong detection system is provided.For achieving the above object, the technical solution adopted in the utility model is that photoelectricity mixing array detection system, comprising: data recording center, data transmission module, signal acquisition module, light source module, photoelectric conversion module, fibre optic hydrophone, optical fiber,
Data recording center is responsible for sending control command in each data transmission module on the one hand, is responsible on the other hand receiving the detection data that each data transmission module sends, and these data are stored and respective handling; Between signal acquisition module and data transmission module, by RS485 interface or SPI interface or the direct-connected mode of level match, carry out data communication; Some data transmission modules are connected in series successively, and the control command of sending from data recording center is forwarded to the data transmission module that is positioned at least significant end successively;
The corresponding signal acquisition module of data transmission module is obtained the detection data from nautical receiving set, and then is sent to upper level data transmission module after these detection datas are processed accordingly; This data transmission module also receives the detection data forwarding from next stage data transmission module simultaneously, after then these detection datas being assembled, again sends to upper level data transmission module;
In signal acquisition module, signal demodulation module has the effect of signal demodulation and control, it receives control command on the one hand, and according to these control commands, change the duty of signal acquisition module, its receives and to come from the detection data that photoelectric conversion module transmits and these detection datas are uploaded in data transmission module on the other hand for it, and signal acquisition module is also controlled light source module;
The light signal of light source module output, after optical branching device, then is sent to respectively in each nautical receiving set;
Between the two ends of the output terminal of light source module, the both sides of optical branching device, each nautical receiving set, each nautical receiving set and photoelectric conversion module, the transmission medium of signal is optical fiber;
The light signal that photoelectric conversion module is responsible for that each fibre optic hydrophone is transmitted converts corresponding electric signal to; Light source module provides luminous energy for each nautical receiving set.
Data recording center sends control command in each data transmission module by downlink, downlink is a kind of in following manner: (1) is based on RS485 hardware interface, the mode that adopts synchronous transmission, starts to be forwarded to step by step each data transmission module by control command from data recording center; In this mode, control command to be sent, without coding, is directly transmitted source code flow, or control command is carried out after Manchester's cde, then transmits, or control command is carried out from NRZ to NRZI after the coding of MLT-3 again, then transmits; (2), based on MLT-3 hardware interface, adopt the mode of synchronous transmission; (3), based on Ethernet chip, control command is started to be forwarded to step by step each data transmission module from data recording center; (4) hardware interface based on voltage or current drives, adopts the mode of asynchronous or synchronous transmission, and control command is started to be forwarded to step by step each data transmission module from data recording center.
Each data transmission module sends to data recording center by uplink by data, uplink is taked any one realization in following four kinds of modes: (1) is based on RS485 hardware interface, the mode that adopts synchronous transmission, is sent to data recording center step by step by detection data; Detection data to be sent can directly transmit source code flow without coding, or detection data is carried out after Manchester's cde, then transmits; Or detection data is carried out from NRZ to NRZI after the coding of MLT-3 again, then transmit; (2) based on MLT-3 hardware interface, adopt the mode of synchronous transmission, detection data is sent to data recording center step by step; (3), based on Ethernet chip, detection data is sent to data recording center step by step; (4) hardware interface based on voltage or current drives, adopts the mode of asynchronous or synchronous transmission, and detection data is sent to data recording center step by step.
The utility model possesses following technique effect:
(1) in the utility model, sensor adopts fibre optic hydrophone, in order to the advantage little, highly sensitive with fibre optic hydrophone self noise, dynamic range is large, antijamming capability is strong, so the signal quality obtaining is higher than full cable array detection system;
(2) in the utility model only when obtaining signal, adopt fibre optic hydrophone and fiber medium, other parts all adopt electric wire to carry out electric signal transmission and processing;
(3) the utility model is owing to having used the fibre optic hydrophone of superior performance, so include a small amount of optical fiber in surveying cable section; Meanwhile, the utility model is owing to having used physical strength electric wire high, that be easy to weld, reliability is high to carry out signal transmission, so include a large amount of electric wires in surveying cable section; For a small amount of optical fiber of making to be connected with nautical receiving set, light source module and photoelectric conversion module easy fracture not, the utility model adopts fiber optic protection layer to carry out concentrated protection to optical fiber;
(4) number of fibers that the utility model is surveyed in cable section greatly reduces than the number of fibers in full optical cable array detection system, so the described photoelectricity mixing array of the utility model detection system has better reliability; Meanwhile, the utility model has adopted the fibre optic hydrophone the same with full optical cable array detection system, so the described photoelectricity mixing array of the utility model detection system and full optical cable array detection system can be obtained identical signal quality.
Accompanying drawing explanation
Fig. 1 illustrates photoelectricity mixing array detection system theory diagram of the present utility model.
Fig. 2 illustrates the inner theory diagram of signal acquisition module of the present utility model.
Fig. 3 illustrates the inner theory diagram of data transmission module of the present utility model.
In Fig. 1: 1 is data recording center, 2 for surveying cable section, 3 is downlink transfer electric wire, 4 is uplink electric wire, 5 is detection data transmission electric wire, 6 is control command transmission electric wire, 7 is data transmission module (1), 8 is signal acquisition module, 9 is downlink transfer electric wire, 10 is optical fiber, 11 is fibre optic hydrophone, 12 is optical fiber, 13 is uplink electric wire, 14 is fiber optic protection layer, 15 is data transmission module (2), 16 is signal acquisition module (2), 17 is uplink electric wire, 18 is downlink transfer electric wire, 19 is data transmission module (i), 20 is signal acquisition module (i), 21 is uplink electric wire, 22 is downlink transfer electric wire, 23 is data transmission module (n), 24 is signal acquisition module (n).
In Fig. 2: 25 is light source module, 26 is optical fiber, and 27 is optical branching device, and 28 is transmission electric wire, and 29 is transmission electric wire, and 30 is signal demodulation module, and 31 is photoelectric conversion module, and 32 is optical fiber, and 33 is fibre optic hydrophone, and 34 is optical fiber.
In Fig. 3: 35 is transmission electric wire, 36 is transmission electric wire, and 37 is order receiver module, and 38 is data transmission blocks, and 39 is data transmission module processing enter, and 40 is order sending module, and 41 is data reception module.
Embodiment
Can overcome following shortcoming: (1) the utility model can overcome the shortcoming that full cable array detection system self noise is large, sensitivity is not high, dynamic range little, antijamming capability is not strong; (2) the utility model can overcome the shortcomings such as complicated that fuse that are prone to fibercuts, optical fiber between the data transmission nodal of full optical cable array detection system.
The utlity model has following advantage: (1) adopts self noise fibre optic hydrophone little, highly sensitive, that dynamic range is large, antijamming capability is strong to obtain signal as sensor, and the signal quality obtaining is high, and the performance of system is good; (2) adopt easy fracture not, physical strength shunting high, signal simple with coupling, be connected that electric wire is as the medium of data transmission simply and easily, transmission line is frangibility not, system is difficult for breaking down, reliability is high.
The technical scheme that the utility model is taked is that photoelectricity mixing array detection system, comprising:
Data recording center: data recording center is responsible for sending control command to each data transmission module on the one hand, is responsible on the other hand receiving the detection data that each data transmission module sends, and these detection datas are stored and respective handling;
Signal acquisition module: signal acquisition module can receive simultaneously and process the signal that a plurality of nautical receiving sets transmit;
Fibre optic hydrophone: fibre optic hydrophone is used as sensor and removes to obtain signal;
Data transmission module: data transmission module (i) (i=1,2 ..., n) receive signal acquisition module (i) (i=1,2 ..., the detection data of n) uploading; In addition, data transmission module (i) comprises a uplink and a downlink; Downlink is comprised of command transfer path, and uplink is comprised of data transmission path;
Data transmission module (i) is received from data transmission module and is turned the control command (attention: the source of control command is all data recording center that (i-1) sends by the order receiver module in downlink, be that control command is all only sent by data recording center, and each data transmission module just forwards control command), then by data transmission module processing enter, on the one hand corresponding operation is identified and made to control command, by order sending module, control command is forwarded to data transmission module on the other hand and turns in (i+1) and go;
Data transmission module (i) is received and is turned from data transmission module the detection data that (i-1) sends by the data reception module in uplink, then these detection datas and the detection data uploaded from signal acquisition module (i) being assembled, then by data transmission blocks, send to data transmission module and turn in (i-1) and go.
Data transmission module processing enter: data transmission module processing enter is connected with order sending module with the order receiver module in downlink respectively, and is connected with data transmission blocks with the data reception module in uplink; Data transmission module processing enter is the core of data transmission module, and all control procedures of data transmission module, the change of duty and the processing of data etc. are all completed by data transmission module processing enter;
Command transfer path: command transfer is led to routing command receiver module, data transmission module processing enter, order sending module composition;
Data transmission path: data transmission path is comprised of data reception module, data transmission module processing enter, data transmission blocks;
Further, carry out the downlink of order transmission, namely command transfer path can be with any one realization in following four kinds of modes: (1) is based on RS485 hardware interface, the mode that adopts synchronous transmission, starts to be forwarded to step by step each data transmission module by control command from data recording center; Note, in this mode, control command to be sent can be without coding, directly transmission source code flow, also can carry out after Manchester's cde control command, then transmit, so that control command receiving end is easy to extract timing information from data stream, can also carry out from NRZ to NRZI again after the coding of MLT-3 control command, then transmit, to reduce the transmission bandwidth of data; (2) based on MLT-3 hardware interface, adopt the mode of synchronous transmission, control command is started to be forwarded to step by step each data transmission module from data recording center; (3), based on Ethernet chip, control command is started to be forwarded to step by step each data transmission module from data recording center; (4) hardware interface of the voltage based on other or current drives, adopts the mode of asynchronous or synchronous transmission, and control command is started to be forwarded to step by step each data transmission module from data recording center.
Further, carry out the uplink of data transmission, namely data transmission path can be with any one realization in following four kinds of modes: (1), based on RS485 hardware interface, adopts the mode of synchronous transmission, and detection data is sent to data recording center step by step; Note, in this mode, detection data to be sent can be without coding, directly transmission source code flow, also can carry out after Manchester's cde detection data, then transmit, so that detection data receiving end is easy to extract timing information from data stream, can also carry out from NRZ to NRZI again after the coding of MLT-3 detection data, then transmit, to reduce the transmission bandwidth of data; (2) based on MLT-3 hardware interface, adopt the mode of synchronous transmission, detection data is sent to data recording center step by step; (3), based on Ethernet chip, detection data is sent to data recording center step by step; (4) hardware interface of the voltage based on other or current drives, adopts the mode of asynchronous or synchronous transmission, and detection data is sent to data recording center step by step.
Further, between signal acquisition module and data transmission module, by RS485 interface or SPI interface or the direct-connected mode of level match, carry out data transmission;
Further, the control command of sending from data recording center is forwarded to last data transmission module step by step from first data transmission module;
With data transmission module (i) (i=1,2,, n) corresponding signal acquisition module (i) (i=1,2, n) obtain the detection data from nautical receiving set, and then be sent to data transmission module (i) (i=1,2 after these detection datas are processed accordingly,, n); Data transmission module (i) (i=1,2 ..., n) also receive the detection data forwarding from data transmission module (i+1) simultaneously, after then these detection datas being assembled, again send in data transmission module (i-1) and go;
In signal acquisition module, signal demodulation module has the effect of signal demodulation and control, it receives the control command passing from data transmission module on the one hand, and according to these control commands, change the duty of signal acquisition module, receive on the other hand and come from the detection data that photoelectric conversion module transmits and these detection datas are uploaded in data transmission module, then can control light source module on the one hand;
In signal acquisition module, from the light signal of light source module output, after optical branching device, then be sent to respectively in each nautical receiving set; An optical branching device divides the way of bright dipping to select according to actual needs;
In signal acquisition module, between the two ends of the output terminal of light source module, the both sides of optical branching device, each nautical receiving set, each nautical receiving set and photoelectric conversion module, the transmission medium of signal is optical fiber; The transmission medium of other parts signal is electric wire;
Photoelectric conversion module: the light signal that photoelectric conversion module is responsible for that each fibre optic hydrophone is transmitted converts corresponding electric signal to; Light source module provides luminous energy for each nautical receiving set.
(1) in the utility model, sensor adopts fibre optic hydrophone, in order to the advantage little, highly sensitive with fibre optic hydrophone self noise, dynamic range is large, antijamming capability is strong, so the signal quality obtaining is higher than full cable array detection system;
(2) in the utility model only when obtaining signal, adopt fibre optic hydrophone and fiber medium, other parts all adopt electric wire to carry out electric signal transmission and processing;
(3) the utility model is owing to having used the fibre optic hydrophone of superior performance, so include a small amount of optical fiber in surveying cable section; Meanwhile, the utility model is owing to having used physical strength electric wire high, that be easy to weld, reliability is high to carry out signal transmission, so include a large amount of electric wires in surveying cable section; For a small amount of optical fiber of making to be connected with nautical receiving set, light source module and photoelectric conversion module easy fracture not, the utility model adopts fiber optic protection layer to carry out concentrated protection to optical fiber;
(4) number of fibers that the utility model is surveyed in cable section greatly reduces than the number of fibers in full optical cable array detection system, so the described photoelectricity mixing array of the utility model detection system has better reliability; Meanwhile, the utility model has adopted the fibre optic hydrophone the same with full optical cable array detection system, so the described photoelectricity mixing array of the utility model detection system and full optical cable array detection system can be obtained identical signal quality.
Below in conjunction with the drawings and specific embodiments, further describe the utility model.
In the utility model, sensor adopts fibre optic hydrophone, in order to the advantage little, highly sensitive with fibre optic hydrophone self noise, dynamic range is large, antijamming capability is strong;
Further, in the utility model, only when obtaining signal, adopt fibre optic hydrophone and fiber medium, other parts all adopt electric wire to carry out electric signal transmission and processing;
Further, the utility model is owing to having used the fibre optic hydrophone of superior performance, so include a small amount of optical fiber in surveying cable section; Meanwhile, the utility model is owing to having used physical strength electric wire high, that be easy to weld, reliability is high to carry out signal transmission, so include a large amount of electric wires in surveying cable section; For a small amount of optical fiber of making to be connected with nautical receiving set, light source module and photoelectric conversion module easy fracture not, the utility model adopts fiber optic protection layer to carry out concentrated protection to optical fiber;
Further, the number of fibers that the utility model is surveyed in cable section greatly reduces than the number of fibers in full optical cable array detection system, so the described photoelectricity mixing array of the utility model detection system has better reliability; Meanwhile, the utility model has adopted the fibre optic hydrophone the same with full optical cable array detection system, so the described photoelectricity mixing array of the utility model detection system and full optical cable array detection system can be obtained identical signal quality;
Further, the utility model adopts fibre optic hydrophone, so it is higher than full cable array detection system to obtain the quality of signal;
Further, the utility model obtains signal by the fibre optic hydrophone in signal acquisition module, and adopts light source module to provide luminous energy to fibre optic hydrophone;
Further, a light source module can provide luminous energy to a plurality of nautical receiving sets by optical branching device; Be sent to photoelectric conversion module, photoelectric conversion module is sent in signal demodulation module after converting light signal to electric signal the signal parallel that each nautical receiving set receives;
Further, signal demodulation module carries out outputing to data transmission module after demodulation, analog to digital conversion and respective handling to the electric signal of input;
Further, signal acquisition module receives control command from data transmission module, to change the duty of self according to different control commands;
Further, data transmission module receives the detection data that signal acquisition module is uploaded; In addition, each data transmission module comprises a uplink and a downlink; Downlink is comprised of command transfer path, and uplink is comprised of data transmission path; Data transmission module receives the control command of coming from a upper data transmission module forwards by the order receiver module in downlink and (notes: the source of control command is all data recording center, be that control command is all only sent by data recording center, and each data transmission module just forwards control command), then by data transmission module processing enter, on the one hand corresponding operation is identified and made in order, by order sending module, control command is forwarded in next data transmission module and is gone on the other hand; Data transmission module receives the detection data sending from next data transmission module by the data reception module in uplink, then these data and the data of uploading from signal acquisition module being assembled, then send in a upper data transmission module and go by data transmission blocks;
Further, carrying out the downlink of order transmission can realize with any one in following four kinds of modes: (1) is based on RS485 hardware interface, the mode that adopts synchronous transmission, starts to be forwarded to step by step each data transmission module by control command from data recording center; Note, in this mode, control command to be sent can be without coding, directly transmission source code flow, also can carry out after Manchester's cde control command, then transmit, so that control command receiving end is easy to extract timing information from data stream, can also carry out from NRZ to NRZI again after the coding of MLT-3 control command, then transmit, to reduce the transmission bandwidth of data; (2) based on MLT-3 hardware interface, adopt the mode of synchronous transmission, control command is started to be forwarded to step by step each data transmission module from data recording center; (3), based on Ethernet chip, control command is started to be forwarded to step by step each data transmission module from data recording center; (4) hardware interface of the voltage based on other or current drives, the mode of employing asynchronous transmission, starts control command to be forwarded to step by step each data transmission module from data recording center.
Further, the uplink that carries out data transmission can be realized with any one in following four kinds of modes: (1), based on RS485 hardware interface, adopts the mode of synchronous transmission, and detection data is sent to data recording center step by step; Note, in this mode, detection data to be sent can be without coding, directly transmission source code flow, also can carry out after Manchester's cde detection data, then transmit, so that detection data receiving end is easy to extract timing information from data stream, can also carry out from NRZ to NRZI again after the coding of MLT-3 detection data, then transmit, to reduce the transmission bandwidth of data; (2) based on MLT-3 hardware interface, adopt the mode of synchronous transmission, detection data is sent to data recording center step by step; (3), based on Ethernet chip, detection data is sent to data recording center step by step; (4) hardware interface of the voltage based on other or current drives, the mode of employing asynchronous transmission, is sent to data recording center step by step by detection data.
Below in conjunction with drawings and Examples, the utility model is described further.
In the utility model, photoelectricity mixing array detection system is mainly by data recording center 1, survey cable section 2, downlink transfer electric wire 3, uplink electric wire 4, detection data transmission electric wire 5, control command transmission electric wire 6, data transmission module (1) 7, signal acquisition module (1) 8, downlink transfer electric wire 9, optical fiber 10, fibre optic hydrophone 11, optical fiber 12, uplink electric wire 13, fiber optic protection layer 14, data transmission module (2) 15, signal acquisition module (2) 16, uplink electric wire 17, downlink transfer electric wire 18, data transmission module (i) 19, signal acquisition module (i) 20, uplink electric wire 21, downlink transfer electric wire 22, data transmission module (n) 23, signal acquisition module (n) 24.
Further, data recording center 1 is responsible for sending control command in each data transmission module on the one hand, is responsible on the other hand receiving the detection data that each data transmission module sends, and these data are stored and respective handling;
Further, a signal acquisition module can receive simultaneously and process the signal that a plurality of nautical receiving sets transmit;
Further, between signal acquisition module and data transmission module, by RS485 interface or SPI interface or the direct-connected mode of level match, carry out data communication;
Further, the control command of sending from data recording center 1 by from data transmission module (1) 7, is forwarded to through data transmission module (2) 15, data transmission module (i) 19 data transmission module (n) 23 that is arranged in least significant end step by step.
Further, with data transmission module (i) (i=1,2 ... n) corresponding signal acquisition module (i) (i=1,2 ..., n) obtain the detection data from nautical receiving set, and then after being processed accordingly, these detection datas are sent to data transmission module (i) (i=1,2 ..., n); Data transmission module (i) (i=1,2 ..., n) also receive from data transmission module (i+1) (i=1 simultaneously, 2,, detection data n) forwarding, after then assembling these detection datas, again send to data transmission module (i-1) (i=1,2 ..., go in n);
Further, at signal acquisition module (i) (i=1,2, n) in, signal demodulation module 30 has the effect of signal demodulation and control, it receives the control command transmitting from transmission line 28 on the one hand, and according to these control commands, change the duty of signal acquisition module (i), its receives and to come from the detection data that photoelectric conversion module 31 transmits and these detection datas are uploaded in data transmission module (i) 19 by 29 on the other hand for it, and it can be controlled light source module 25 more on the one hand;
Further, signal acquisition module (i) (i=1,2 ..., n) in, from the light signal of light source module 25 output, after optical branching device 27, then be sent to respectively in each nautical receiving set;
Further, in signal acquisition module (i) (i=1,2, n), in, between the output terminal of light source module 25, the both sides of optical branching device 27, the two ends of each nautical receiving set, each nautical receiving set and photoelectric conversion module 31, the transmission medium of signal is optical fiber; The transmission medium of other parts signal is electric wire;
Further, the light signal that photoelectric conversion module 31 is responsible for each fibre optic hydrophone to transmit converts corresponding electric signal to; Light source module 25 provides luminous energy for each nautical receiving set;
Further, data transmission module (i) (i=1,2 ..., n) receive signal acquisition module (i) (i=1,2 ..., the detection data of n) uploading; In addition, data transmission module (i) comprises a uplink and a downlink; Downlink is comprised of command transfer path, and uplink is comprised of data transmission path; Data transmission module (i) is received from data transmission module and is turned the control command (attention: the source of control command is all data recording center 1 that (i-1) sends by the order receiver module 37 in downlink, be that control command is all only sent by data recording center 1, and each node just forwards control command), then by data transmission module processing enter 39, on the one hand corresponding operation is identified and made to control command, by order sending module 40, control command is forwarded to data transmission module on the other hand and turns in (i+1) and go; Data transmission module (i) is received and is turned from data transmission module the detection data that (i-1) sends by the data reception module 41 in uplink, then these detection datas and the detection data uploaded from signal acquisition module (i) being assembled, then by data transmission blocks 38, send to data transmission module and turn in (i-1) and go.
Further, carrying out the downlink of order transmission can realize with any one in following four kinds of modes: (1) is based on RS485 hardware interface, the mode that adopts synchronous transmission, starts to be forwarded to step by step each data transmission module by control command from data recording center; Note, in this mode, control command to be sent can be without coding, directly transmission source code flow, also can carry out after Manchester's cde control command, then transmit, so that control command receiving end is easy to extract timing information from data stream, can also carry out from NRZ to NRZI again after the coding of MLT-3 control command, then transmit, to reduce the transmission bandwidth of data; (2) based on MLT-3 hardware interface, adopt the mode of synchronous transmission, control command is started to be forwarded to step by step each data transmission module from data recording center; (3), based on Ethernet chip, control command is started to be forwarded to step by step each data transmission module from data recording center; (4) hardware interface of the voltage based on other or current drives, the mode of employing asynchronous transmission, starts control command to be forwarded to step by step each data transmission module from data recording center.
Further, the uplink that carries out data transmission can be realized with any one in following four kinds of modes: (1), based on RS485 hardware interface, adopts the mode of synchronous transmission, and detection data is sent to data recording center step by step; Note, in this mode, detection data to be sent can be without coding, directly transmission source code flow, also can carry out after Manchester's cde detection data, then transmit, so that detection data receiving end is easy to extract timing information from data stream, can also carry out from NRZ to NRZI again after the coding of MLT-3 detection data, then transmit, to reduce the transmission bandwidth of data; (2) based on MLT-3 hardware interface, adopt the mode of synchronous transmission, detection data is sent to data recording center step by step; (3), based on Ethernet chip, detection data is sent to data recording center step by step; (4) hardware interface of the voltage based on other or current drives, the mode of employing asynchronous transmission, is sent to data recording center step by step by detection data.
Claims (3)
1. a photoelectricity mixing array detection system, is characterized in that, comprising: data recording center, data transmission module, signal acquisition module, light source module, photoelectric conversion module, fibre optic hydrophone, optical fiber;
Data recording center is responsible for sending control command in each data transmission module on the one hand, is responsible on the other hand receiving the detection data that each data transmission module sends, and these data are stored and respective handling; Between signal acquisition module and data transmission module, by RS485 interface or SPI interface or the direct-connected mode of level match, carry out data communication; Some data transmission modules are connected in series successively, and the control command of sending from data recording center is forwarded to the data transmission module that is positioned at least significant end successively;
The corresponding signal acquisition module of data transmission module is obtained the detection data from nautical receiving set, and then is sent to upper level data transmission module after these detection datas are processed accordingly; This data transmission module also receives the detection data forwarding from next stage data transmission module simultaneously, after then these detection datas being assembled, again sends to upper level data transmission module;
In signal acquisition module, signal demodulation module has the effect of signal demodulation and control, it receives control command on the one hand, and according to these control commands, change the duty of signal acquisition module, its receives and to come from the detection data that photoelectric conversion module transmits and these detection datas are uploaded in data transmission module on the other hand for it, and signal acquisition module is also controlled light source module;
The light signal of light source module output, after optical branching device, then is sent to respectively in each nautical receiving set;
Between the two ends of the output terminal of light source module, the both sides of optical branching device, each nautical receiving set, each nautical receiving set and photoelectric conversion module, the transmission medium of signal is optical fiber;
The light signal that photoelectric conversion module is responsible for that each fibre optic hydrophone is transmitted converts corresponding electric signal to; Light source module provides luminous energy for each nautical receiving set.
2. photoelectricity mixing array detection system as claimed in claim 1, it is characterized in that, data recording center sends control command in each data transmission module by downlink, downlink is a kind of in following manner: (1) is based on RS485 hardware interface, the mode that adopts synchronous transmission, starts to be forwarded to step by step each data transmission module by control command from data recording center; In this mode, control command to be sent, without coding, is directly transmitted source code flow, or control command is carried out after Manchester's cde, then transmits, or control command is carried out from NRZ to NRZI after the coding of MLT-3 again, then transmits; (2), based on MLT-3 hardware interface, adopt the mode of synchronous transmission; (3), based on Ethernet chip, control command is started to be forwarded to step by step each data transmission module from data recording center; (4) hardware interface based on voltage or current drives, adopts the mode of asynchronous or synchronous transmission, and control command is started to be forwarded to step by step each data transmission module from data recording center.
3. photoelectricity mixing array detection system as claimed in claim 1, it is characterized in that, each data transmission module sends to data recording center by uplink by data, uplink is taked any one realization in following four kinds of modes: (1) is based on RS485 hardware interface, the mode that adopts synchronous transmission, is sent to data recording center step by step by detection data; Detection data to be sent can directly transmit source code flow without coding, or detection data is carried out after Manchester's cde, then transmits; Or detection data is carried out from NRZ to NRZI after the coding of MLT-3 again, then transmit; (2) based on MLT-3 hardware interface, adopt the mode of synchronous transmission, detection data is sent to data recording center step by step; (3), based on Ethernet chip, detection data is sent to data recording center step by step; (4) hardware interface based on voltage or current drives, adopts the mode of asynchronous or synchronous transmission, and detection data is sent to data recording center step by step.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439745A (en) * | 2013-08-29 | 2013-12-11 | 天津大学 | Photovoltaic hybrid array detection system |
| CN108169793A (en) * | 2017-12-27 | 2018-06-15 | 国家海洋局第海洋研究所 | A kind of earthquake data acquisition multi-protocols real-time transmission system |
| CN109064727A (en) * | 2018-09-18 | 2018-12-21 | 淄博祥龙测控技术有限公司 | Coal mine goaf wireless sensing device based on LORA technology and communication method |
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2013
- 2013-08-29 CN CN201320539976.7U patent/CN203490373U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439745A (en) * | 2013-08-29 | 2013-12-11 | 天津大学 | Photovoltaic hybrid array detection system |
| CN103439745B (en) * | 2013-08-29 | 2015-10-28 | 天津大学 | Photovoltaic hybrid array detection system |
| CN108169793A (en) * | 2017-12-27 | 2018-06-15 | 国家海洋局第海洋研究所 | A kind of earthquake data acquisition multi-protocols real-time transmission system |
| CN109064727A (en) * | 2018-09-18 | 2018-12-21 | 淄博祥龙测控技术有限公司 | Coal mine goaf wireless sensing device based on LORA technology and communication method |
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