CN103825749A - Cascaded synchronous large-scale data collecting system based on network and distributed type power supply - Google Patents
Cascaded synchronous large-scale data collecting system based on network and distributed type power supply Download PDFInfo
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- CN103825749A CN103825749A CN201410073276.2A CN201410073276A CN103825749A CN 103825749 A CN103825749 A CN 103825749A CN 201410073276 A CN201410073276 A CN 201410073276A CN 103825749 A CN103825749 A CN 103825749A
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Abstract
The invention provides a cascaded synchronous large-scale data collecting system based on a network and distributed type power supply. The cascaded synchronous large-scale data collecting system comprises a plurality of power supply and data collecting sub-systems, an industrial Ethernet switch and a plurality of data collecting working stations. Each power supply and data collecting sub-system comprises main power stations. External power supplies have access to the main power stations, the main power stations conduct interference resistance and current limiting on the external power supplies so that electric power can be supplied outward and clock synchronization of all the main power stations can be achieved, and the main power stations provide an Ethernet switch interface and a power supply interface. The external power supplies have access to the power stations, interference resistance and current limiting are conducted on the external power supplies, electric power is supplied outward, and the Ethernet switch interface is provided; each collecting terminal receives input signals and processes the input signals to generate processed data so that clock synchronization of all the collecting terminals can be ensured; the industrial Ethernet switch receives the processed data and sends the processed data to the data collecting working stations; each data collecting working station receives the processed data. By means of the cascaded synchronous large-scale data collecting system, cascaded communication and power supply synchronous data collecting of the whole system can be achieved.
Description
Technical field
The present invention relates to communication and technical field of data processing, particularly a kind of Network Based and synchronous large-scale data acquisition system of tandem type distributed power supply.
Background technology
In tunnel monitoring, the common circuit of oil seismic exploration signal acquiring system is very long, therefore can adopt proprietary network technology, for example the token-ring network of specialty, or adopt Ethernet and CAN(Controller Area Network, controller local area network) bus etc.But aforesaid way has only solved communication issue, be difficult to solve powerup issue.Although have POE(Power Over Ethernet, active Ethernet) technology, it belongs to star wire laying mode, and its communication and only 100m of power supply distance, can not meet on-the-spot needs.Because its signal is AC signal, frequency is between 0.001HZ～1000HZ, very high for signal to noise ratio requirement, more than requiring to reach 90DB.Signal is guided to center and concentrate the mode gathering, the deterioration that will bring signal to noise ratio, introduces the interference of electrical network, technical infeasible.And the collection of AC signal must synchronously carry out, otherwise lose phase information.
And, due to field condition very severe, be not easy to install and wiring more complicated, and prior art still can not realize synchronous data acquisition, can not realize the synchronous data collection of cascaded communication and power supply.
Summary of the invention
Object of the present invention is intended at least solve one of described technological deficiency.
For this reason, the object of the invention is to propose a kind of Network Based and synchronous large-scale data acquisition system of tandem type distributed power supply, this system can conveniently be installed, wiring is simple, can realize synchronous data acquisition, and realize the synchronous data collection scheme that can carry out cascaded communication and power supply.
To achieve these goals, embodiments of the invention provide a kind of Network Based and synchronous large-scale data acquisition system of tandem type distributed power supply, comprise: multiple power supplies and data acquisition subsystem, industrial ethernet switch and many number of units are according to acquisition workstation, wherein, described industrial ethernet switch communicates with each described power supply and data acquisition subsystem and each described data collection task station respectively, wherein, each described power supply and data acquisition subsystem are for generating supply current with supplying power for outside and gathering outside input signal and generate corresponding deal with data, wherein, each described power supply and data acquisition subsystem comprise: main power source station, described main power source station communicates by optical fiber communication or communication and described industrial ethernet switch, wherein, described main power source station is used for accessing external power source, and described external power source is carried out to anti-interference and current limliting processing, generate supply current with supplying power for outside, internally power through DC power convertor simultaneously, and the time service that the synchronous master clock of IEEE1588V2 is provided and receives satellite navigation system is to realize the clock synchronous between each described main power source station, and provide Ethernet switch interface and power supply interface, from power station, for accessing described external power source, and described external power source is carried out to anti-interference and current limliting processing, generate supply current with supplying power for outside, internally power through DC power convertor simultaneously, and be provided for the Ethernet switch interface of cascade, multiple acquisition terminals, described multiple acquisition terminal communicates to realize power supply cascade and each described acquisition terminal and main power source station by stube cable successively cascade, a part in described multiple acquisition terminal is worked under the described supply current of described main power source station output by described stube cable, another part is worked described by described stube cable from the described supply current of power station output, wherein, each described acquisition terminal receives outside input signal, and described input signal is amplified, filtering and analyzing and processing are processed rear data to generate, and data after described processing are sent to described main power source station, and the IEEE1588V2 message that each described acquisition terminal also sends for receiving described main power source station, and according to IEEE1588V2 agreement, time deviation and the frequency departure of the master clock at calculating and described main power source station, and adjust described time deviation and frequency departure so that the time error of the clock of each described acquisition terminal and master clock is less than to preset value, trigger sampling output by the clock of described acquisition terminal more synchronous to guarantee the sampling clock of each acquisition terminal, described industrial ethernet switch is used for receiving from data after the described processing at described main power source station, and data after described processing are sent to described many number of units according to acquisition workstation, each described data collection task station is used for receiving data after described processing, and to data analysis and storage after described processing.
In one embodiment of the invention, each described main power source station comprises: the first power supply, the first Ethernet switching chip group, first processor, Ethernet switch interface and power interface, wherein, described the first power supply is used for accessing external power source, and described external power source is generated to supply current to power to described the first Ethernet switching chip group and described first processor after DC power convertor, and described external power source connects a side of two pairs of heart yearns in parallel in stube cable, described acquisition terminal connects the opposite side of described two pairs of two-way heart yearns in parallel to realize power supply cascade by described power interface, one of them interface of the first Ethernet switching chip group is connected with the elementary of Ethernet transformer, a secondary side that connects two pairs of signal core lines in stube cable of described Ethernet transformer, and the another one of described Ethernet switch interface is connected with the elementary of another Ethernet transformer, the message switching of the opposite side that described another Ethernet transformer secondary connects described two pairs of one way signal heart yearns by Ethernet switching chip is to realize the cascade of ethernet communication signal, first processor, described first processor is connected with described first one of them interface of Ethernet switching chip group, for for the synchronous master clock of IEEE1588V2 the time service that receives satellite navigation system to realize the clock synchronous between each described main power source station.
In one embodiment of the invention, described satellite navigation system is triones navigation system or global position system GPS receiver.
In yet another embodiment of the present invention, described industrial ethernet switch and described the first chips of Ethernet exchange group communicate by optical fiber or wireless mode.
In another embodiment of the present invention, described main power source station is also for exporting pulse per second (PPS) 1PPS signal.
In one embodiment of the invention, describedly comprise from power station: second source, the second Ethernet switching chip group and Ethernet switch interface, wherein, described second source is used for accessing external power source, and described external power source is generated to supply current to power to described the second Ethernet switching chip group after DC power convertor, and described external power source connects a side of two pairs of heart yearns in parallel in stube cable, described acquisition terminal connects the opposite side of described two pairs of two-way heart yearns in parallel to realize power supply cascade by described power interface; One of them interface of described the second Ethernet switching chip group is connected with the elementary of Ethernet transformer, a secondary side that connects two pairs of signal core lines in stube cable of described Ethernet transformer, and the another one interface of described Ethernet switch is connected with the elementary of another Ethernet transformer, the message switching of the opposite side that described another Ethernet transformer secondary connects described two pairs of one way signal heart yearns by Ethernet switching chip is to realize the cascade of ethernet communication signal.
In yet another embodiment of the present invention, each described acquisition terminal comprises multiple signals processing unit and the second processor, wherein, the IEEE1588V2 message that described the second processor sends for receiving described main power source station, and according to IEEE1588V2 agreement, time deviation and the frequency departure of the master clock at calculating and described main power source station, and adjust described time deviation and frequency departure so that the time error of the clock of each described acquisition terminal and master clock is less than to preset value, trigger sampling output by the clock of described acquisition terminal more synchronous to guarantee the sampling clock of each acquisition terminal, described multiple signals processing unit is connected with described the second processor, wherein, described in every road signal processing unit be connected with described the second CPU by spi bus, every road signal processing unit is for accessing the input signal of described outside, and to described input signal amplify, filtering and signals collecting.
In another embodiment of the present invention, signal processing unit comprises described in every road: programmable gain amplifier, for receiving the input signal of described outside, and adjust the multiplication factor of described programmable gain amplifier according to the intensity of described input signal; Bank of filters, described bank of filters is connected with the output of described programmable gain amplifier, for described input signal is carried out to filtering; Gradual approaching A/D converter, the input of described gradual approaching A/D converter is connected with the output of described bank of filters, for being carried out to signals collecting, filtered signal obtains image data, and by described spi bus, described image data is sent to described the second CPU, wherein, described the second CPU is also for carrying out analyzing and processing and being sent to described main power source station to described image data.
According to the synchronous large-scale data acquisition system of the tandem type of the Network Based and distributed power supply of the embodiment of the present invention, employing is different from the tandem type power delivery method based on Ethernet stube cable of POE method, the large-scale data acquisition system of the system architecture based on Ethernet and the Clock Synchronization Technology of IEEE1588V2, Network Based and new framework distributed power supply is proposed, can be on Ethernet stube cable, communication and function of supplying power that cascade is provided, solved wiring, power supply and stationary problem.And, Network Based and the synchronous large-scale data acquisition system of tandem type distributed power supply of the present invention can conveniently be installed, wiring is simple, can realize synchronous data acquisition, and realize and can realize the cascaded communication of whole system and the synchronous data collection scheme of power supply.
The aspect that the present invention is additional and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is according to the schematic diagram of the synchronous large-scale data acquisition system of tandem type of the Network Based and distributed power supply of the embodiment of the present invention;
Fig. 2 is according to the schematic diagram at the main power source station of the embodiment of the present invention;
Fig. 3 is the schematic diagram from power station according to the embodiment of the present invention;
Fig. 4 is according to the schematic diagram of the acquisition terminal of the embodiment of the present invention.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
The synchronous large-scale data acquisition system of tandem type of the Network Based and distributed power supply below with reference to Fig. 1 to Fig. 4 to the embodiment of the present invention is described.The present invention proposes Network Based and new framework distributed power supply, can be on Ethernet stube cable, communication and the function of supplying power of cascade is provided, and solve wiring, power supply and stationary problem.
As shown in Figure 1, the synchronous large-scale data acquisition system of the tandem type of the Network Based and distributed power supply that the embodiment of the present invention provides, comprising: multiple power supplies and data acquisition subsystem 1, industrial ethernet switch 2 and many number of units are according to acquisition workstation 3.Wherein, industrial ethernet switch 2 communicates according to acquisition workstation 3 with each power supply and data acquisition subsystem 1 and every number of units respectively.
Particularly, each power supply and data acquisition subsystem 1 are for generating supply current with supplying power for outside and gathering outside input signal and generate corresponding deal with data, wherein, each power supply and data acquisition subsystem comprise: main power source station 11, from power station 12 and multiple acquisition terminal 13.
Wherein, main power source station 11 can complete power supply and the network interface to network system, and the synchronous master clock of IEEE1588 is provided, thereby accepts the clock synchronous of global position system time service assurance whole system.Below the above-mentioned functions at main power source station 11 is described in detail.
Particularly, main power source station 11 can communicate by optical fiber communication or communication and industrial ethernet switch 2.Wherein, main power source station 11 can be for access external power source, and this external power source is carried out to anti-interference and current limliting processing, then produces supply current, and exports supply current externally to power, and internally powers through DC power convertor simultaneously.In addition, main power source station 11 also for the time service that provides the synchronous master clock of IEEE1588V2 and receive satellite navigation system to realize the clock synchronous at 11, each main power source station.And main power source station 11 is also for providing Ethernet switch interface and power supply interface.In one embodiment of the invention, main power source station 11 can provide 2～4 Ethernet switch interfaces.
As shown in Figure 2, each main power source station 11 comprises: the first power supply 111, the first Ethernet switching chip group 112, first processor 113, Ethernet switch interface and power interface.Wherein, the first power supply 111 is for accessing external power source, and external power source generated after DC power convertor (DC/DC) to supply current, thereby powers to the first Ethernet switching chip group 112 and first processor 113.
In one embodiment of the invention, external power source is got 48V or 60V, and maximum current current limliting is 2A, by 4,5,7,8 line centerings of this power supply access network based on ethernet line, supplying power for outside.Particularly, external power source connects a side of two pairs of heart yearns in parallel in class line, and acquisition terminal 13 connects the opposite side of described above-mentioned two pairs of two-way heart yearns in parallel to realize the power supply to acquisition terminal 13 of power supply cascade and main power source station 11 by power interface.Wherein 4 of 5 class lines and 5 is one group, and 7 and 8 is one group, and two groups of lines are to realizing the cascade of power supply by internal parallel.
In an embodiment of the present invention, connector is selected heavy-duty connector, thereby guarantees severe on-the-spot reliable connection.
In an example of the present invention, one of them interface of the first Ethernet switching chip group 112 is connected with the elementary of Ethernet transformer, a secondary side that connects two pairs of signal core lines in stube cable of Ethernet transformer, and the another one interface of Ethernet switch is connected with the elementary of another Ethernet transformer, the message switching of the opposite side that this another Ethernet transformer secondary connects two pairs of one way signal heart yearns by Ethernet switching chip is to realize the cascade of ethernet communication signal.Wherein, ethernet communication signal cascade by providing 1 twoport Ethernet switch to realize on each unit.Wherein, 1,2,3,6 lines pair that two pairs of one way signal heart yearns of stube cable are respectively, secondary 1,2,3,6 lines that connect stube cable of Ethernet transformer are to realizing the cascade of ethernet signal.Wherein, stube cable is for example category-5 cable.It should be noted that, category-5 cable is only to stube cable for exemplary purposes, rather than in order to limit the present invention.Stube cable of the present invention can also be other forms, does not repeat them here.
In one embodiment of the invention, the first Ethernet switching chip group 112 can be selected the DM8806C of DAVICOM, and 6 Ethernet interfaces are provided altogether, 4 of actual uses.
Industrial ethernet switch and the first chips of Ethernet exchange group communicate by optical fiber or wireless mode.Wherein, optical fiber communication mode adopts the electricity mouthful light mouth transducer of external, can be convenient for changing as 3G or 4G router in the future.
First processor 113 is connected with Ethernet switching chip group 112 one of them interface, for for the synchronous master clock of IEEE1588V2 the time service that receives satellite navigation system to realize the clock synchronous at 11, each main power source station.
In another example of the present invention, it is the integrated CPU of the support M4 kernel of STM32F417 that first processor 113 is selected model, it has the hardware facility of supporting IEEE1588V2, can support easily IEEE1588V2 clock synchronization protocol, can guarantee the clock synchronization accuracy of each acquisition terminal, time phase difference is less than 2 μ s.Wherein, first processor 113 receives power supply, the calibration of constant-temperature crystal oscillator and the timing of RTC clock of external cell.
In one embodiment of the invention, satellite navigation system 114 can be triones navigation system or global position system GPS receiver.
The Big Dipper/GPS receiver receives the time signal of satellite, and precision is the highest, is better than 100NS, and its signal can be for the master clock signal of the IEEE1588V2 at synchronous main power source station 11.
In yet another embodiment of the present invention, main power source station 11 is also for exporting pulse per second (PPS) 1PPS signal.
The Big Dipper or GPS to system time service, produce date Hour Minute Second time signal by serial ports, and wherein accurate time service, by 1PPS signal, can provide the time precision that is better than 100NS, guarantee the clock synchronization accuracy below different main power source stations.
Mainly complete the function of Ethernet switch function and current limliting power supply from power station 12.Particularly, can access external power source from power station 12, and this external power source is carried out to anti-interference and current limliting processing, produce supply current, and export this supply current with supplying power for outside, internally power through DC power convertor simultaneously, and be provided for the Ethernet switch interface of cascade.Communication distance deficiency or electricity shortage it should be noted that, if can solve from the mode of power station by increasing.In an embodiment of the present invention, can provide 2 Ethernet switch interfaces from power station 12.
As shown in Figure 3, comprise second source 121, the second Ethernet switching chip group 122 and Ethernet interface from power station 12.Particularly, second source 121 is for accessing external power source, and external power source generated after DC power convertor to supply current to power to the second Ethernet switching chip group 122.
In one embodiment of the invention, external power source is got 48V or 60V, and maximum current current limliting is 2A, by 4,5,7,8 line centerings of this power supply access network based on ethernet line, supplying power for outside.Particularly, external power source connects a side of two pairs of heart yearns in parallel in class line, and acquisition terminal 13 connects the opposite side of described above-mentioned two pairs of two-way heart yearns in parallel to realize the power supply to acquisition terminal 13 of power supply cascade and main power source station 11 by power interface.Wherein 4 of 5 class lines and 5 is one group, and 7 and 8 is one group, and two groups of lines are to realizing the cascade of power supply by internal parallel.
In an embodiment of the present invention, connector is selected heavy-duty connector, thereby guarantees severe on-the-spot reliable connection.One of them interface of the second Ethernet switching chip group 122 is connected with the elementary of Ethernet transformer, a secondary side that connects two pairs of signal core lines in stube cable of Ethernet transformer, and the another one interface of Ethernet switch is connected with the elementary of another Ethernet transformer, the message switching of the opposite side that another Ethernet transformer secondary connects described two pairs of one way signal heart yearns by Ethernet switching chip is to realize the cascade of ethernet communication signal.Wherein, ethernet communication signal cascade by providing 1 twoport Ethernet switch to realize on each unit.Wherein, 1,2,3,6 lines pair that two pairs of one way signal heart yearns of stube cable are respectively, secondary 1,2,3,6 lines that connect stube cable of Ethernet transformer are to realizing the cascade of ethernet signal.
In an example of the present invention, it is the DM8803 of DAVICOM that the second Ethernet switching chip group 122 is selected model, and 3 Ethernet interfaces are provided altogether, 3 of actual uses.
Acquisition terminal 13 is power consumption equipment, can data acquisition, networking interface is provided, and be external sensor power supply.
Multiple acquisition terminals 13 are by stube cable successively cascade to realize power supply cascade, and each acquisition terminal 13 communicates with main power source station 11.Particularly, under the power supply of the supply current that the part in multiple acquisition terminals 13 is exported at main power source station 11 by stube cable, work, another part acquisition terminal 13 is worked under the power supply of the supply current of exporting from power station 12 by stube cable.Wherein, each acquisition terminal 13 receives outside input signal, and this input signal is amplified, filtering and analyzing and processing are processed rear data to generate, and data after processing are sent to main power source station 11, and the IEEE1588V2 message that each acquisition terminal 13 also sends for receiving main power source station 11, and according to IEEE1588V2 agreement, time deviation and the frequency departure of the master clock at calculating and main power source station 11, and adjust time deviation and frequency departure so that the time error of the clock of each acquisition terminal 13 and master clock is less than to preset value, trigger sampling output by the clock of acquisition terminal 13 more synchronous to guarantee the sampling clock of each acquisition terminal.
In one embodiment of the invention, each acquisition terminal 13 is all drawn the output of 1PPS signal, conveniently tests and measures.
As shown in Figure 4, each acquisition terminal 13 comprises: the second processor 131 and multiple signals processing unit 132.Wherein, the second processor 131 is for receiving the IEEE1588V2 message being sent by main power source station 11, and according to IEEE1588V2 agreement, time deviation and the frequency departure of the master clock at calculating and main power source station 11, and adjust time deviation and frequency departure so that the time error of the clock of each acquisition terminal 13 and master clock is less than to preset value, then it is synchronous to guarantee the sampling clock of each acquisition terminal to trigger sampling output by the clock of acquisition terminal 13.That is, acquisition terminal 13 is synchronizeed with master clock by 1588V2 agreement, thereby guarantees the synchronism of whole system.
In an example of the present invention, the second processor 131 adopts STM32F417, and this is the arm processor of 32 COTEX M4, and itself hardware supports IEEE1588V2 agreement is supported Ethernet interface.
Every road signal processing unit 132 be connected with the second processor 131 by spi bus, every road signal processing unit 132 is for accessing outside input signal, and to input signal amplify, filtering and signals collecting.
In one embodiment of the invention, every road signal processing unit 132 comprises: programmable gain amplifier PGA1341, bank of filters and gradual approaching A/D converter 1342.
Particularly, programmable gain amplifier 1341 can receive outside input signal, and adjusts the multiplication factor of described programmable gain amplifier according to the intensity of input signal.Bank of filters is connected with the output of programmable gain amplifier 1341, can carry out filtering to input signal.Wherein, bank of filters comprises second-order low-pass filter (LPF, Low Pass Filter) and bivalent high-pass filter (HPF, High Pass Filter).
Gradual approaching A/D converter (SAR ADC) 1342 input is connected with the output of bank of filters, obtains image data, and by spi bus, image data is sent to the second processor 131 for filtered signal is carried out to signals collecting.Wherein, the second processor 131 is also for carrying out analyzing and processing and being sent to main power source station 11 to image data.That is, input signal after the filtering of wave filter group, is sent to 16 gradual approaching A/D converters (SAR ADC) 1342 and carries out signals collecting after programmable gain amplifier 1341 amplifies, be transferred in the second processor 131 by the total image data of SPI,
After data processing, keep in, by Internet Transmission to data collection task station 3.
Industrial ethernet switch 2 can receive data after the processing being sent by each acquisition terminal 13 at automatic power supply station 11, and above-mentioned data after treatment are sent to many number of units according to acquisition workstation 3.
Every number of units is the data after can reception & disposal according to acquisition workstation 3, and to data analysis after treatment and storage.
In one embodiment of the invention, single supply station can complete 500 meters of distances by cascade, supports at most 25 equipment, and the power wastage in bulk or weight of acquisition terminal is not more than 50 watts, and multiple supply stations only solve output power and distance problem.
According to the synchronous large-scale data acquisition system of the tandem type of the Network Based and distributed power supply of the embodiment of the present invention, employing is different from the tandem type power delivery method based on Ethernet stube cable of POE method, the large-scale data acquisition system of the system architecture based on Ethernet and the Clock Synchronization Technology of IEEE1588V2, Network Based and new framework distributed power supply is proposed, can be on Ethernet stube cable, communication and function of supplying power that cascade is provided, solved wiring, power supply and stationary problem.And, Network Based and the synchronous large-scale data acquisition system of tandem type distributed power supply of the present invention can conveniently be installed, wiring is simple, can realize synchronous data acquisition, and realize and can realize the cascaded communication of whole system and the synchronous data collection scheme of power supply.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention in the situation that not departing from principle of the present invention and aim, modification, replacement and modification.Scope of the present invention is extremely equal to and limits by claims.
Claims (8)
1. the Network Based and synchronous large-scale data acquisition system of tandem type distributed power supply, it is characterized in that, comprise: multiple power supplies and data acquisition subsystem, industrial ethernet switch and many number of units are according to acquisition workstation, wherein, described industrial ethernet switch communicates with each described power supply and data acquisition subsystem and each described data collection task station respectively, wherein
Each described power supply and data acquisition subsystem are for generating supply current with supplying power for outside and gathering outside input signal and generate corresponding deal with data, and wherein, each described power supply and data acquisition subsystem comprise:
Main power source station, described main power source station communicates by optical fiber communication or communication and described industrial ethernet switch, wherein, described main power source station is used for accessing external power source, and described external power source is carried out to anti-interference and current limliting processing, generate supply current with supplying power for outside, internally power through DC power convertor simultaneously, and the time service that the synchronous master clock of IEEE1588V2 is provided and receives satellite navigation system to be to realize the clock synchronous between each described main power source station, and provide Ethernet switch interface and power supply interface;
From power station, for accessing described external power source, and described external power source is carried out to anti-interference and current limliting processing, generate supply current with supplying power for outside, internally power through DC power convertor simultaneously, and be provided for the Ethernet switch interface of cascade;
Multiple acquisition terminals, described multiple acquisition terminal communicates to realize power supply cascade and each described acquisition terminal and main power source station by stube cable successively cascade, a part in described multiple acquisition terminal is worked under the described supply current of described main power source station output by described stube cable, another part is worked described by described stube cable from the described supply current of power station output, wherein, each described acquisition terminal receives outside input signal, and described input signal is amplified, filtering and analyzing and processing are processed rear data to generate, and data after described processing are sent to described main power source station, and the IEEE1588V2 message that each described acquisition terminal also sends for receiving described main power source station, and according to IEEE1588V2 agreement, time deviation and the frequency departure of the master clock at calculating and described main power source station, and adjust described time deviation and frequency departure so that the time error of the clock of each described acquisition terminal and master clock is less than to preset value, trigger sampling output to guarantee the clock synchronous of each acquisition terminal by the clock of described acquisition terminal again, described industrial ethernet switch is used for receiving from data after the described processing at described main power source station, and data after described processing are sent to described many number of units according to acquisition workstation,
Each described data collection task station is used for receiving data after described processing, and to data analysis and storage after described processing.
2. the Network Based and synchronous large-scale data acquisition system of tandem type distributed power supply as claimed in claim 1, it is characterized in that, each described main power source station comprises: the first power supply, the first Ethernet switching chip group, first processor, Ethernet switch interface and power interface, wherein
Described the first power supply is used for accessing external power source, and described external power source is generated to supply current to power to described the first Ethernet switching chip group and described first processor after DC power convertor, and described external power source connects a side of two pairs of heart yearns in parallel in stube cable, described acquisition terminal connects the opposite side of described two pairs of two-way heart yearns in parallel to realize power supply cascade by described power interface;
One of them interface of the first Ethernet switching chip group is connected with the elementary of Ethernet transformer, a secondary side that connects two pairs of signal core lines in stube cable of described Ethernet transformer, and the another one interface of described Ethernet switch is connected with the elementary of another Ethernet transformer, the message switching of the opposite side that described another Ethernet transformer secondary connects described two pairs of one way signal heart yearns by Ethernet switching chip is to realize the cascade of ethernet communication signal;
First processor, described first processor is connected with one of them interface of described the first Ethernet switching chip group, for for the synchronous master clock of IEEE1588V2 the time service that receives satellite navigation system to realize the clock synchronous between each described main power source station.
3. the Network Based and synchronous large-scale data acquisition system of tandem type distributed power supply as claimed in claim 2, is characterized in that, described satellite navigation system is triones navigation system or global position system GPS receiver.
4. the Network Based and synchronous large-scale data acquisition system of tandem type distributed power supply as claimed in claim 2, is characterized in that, described industrial ethernet switch and described the first chips of Ethernet exchange group communicate by optical fiber or wireless mode.
5. the Network Based and synchronous large-scale data acquisition system of tandem type distributed power supply as claimed in claim 1, is characterized in that, described main power source station is also for exporting pulse per second (PPS) 1PPS signal.
6. the Network Based and synchronous large-scale data acquisition system of tandem type distributed power supply as claimed in claim 1, is characterized in that, describedly comprises from power station: second source, the second Ethernet switching chip group and Ethernet switch interface, wherein,
Described second source is used for accessing external power source, and described external power source is generated to supply current to power to described the second Ethernet switching chip group after DC power convertor, and described external power source connects a side of two pairs of heart yearns in parallel in stube cable, described acquisition terminal connects the opposite side of described two pairs of two-way heart yearns in parallel to realize power supply cascade by described power interface;
One of them interface of described the second Ethernet switching chip group is connected with the elementary of Ethernet transformer, a secondary side that connects two pairs of signal core lines in stube cable of described Ethernet transformer, and the another one interface of described Ethernet switch is connected with the elementary of another Ethernet transformer, the message switching of the opposite side that described another Ethernet transformer secondary connects described two pairs of one way signal heart yearns by Ethernet switching chip is to realize the cascade of ethernet communication signal.
7. the Network Based and synchronous large-scale data acquisition system of tandem type distributed power supply as claimed in claim 1, is characterized in that, each described acquisition terminal comprises: multiple signals processing unit and the second processor, wherein,
The IEEE1588V2 message that described the second processor sends for receiving described main power source station, and according to IEEE1588V2 agreement, time deviation and the frequency departure of the master clock at calculating and described main power source station, and adjust described time deviation and frequency departure so that the time error of the clock of each described acquisition terminal and master clock is less than to preset value, then it is synchronous to guarantee the sampling clock of each acquisition terminal to trigger sampling output by the clock of described acquisition terminal;
Described multiple signals processing unit is connected with described the second processor, wherein, described in every road signal processing unit be connected with described the second CPU by spi bus, every road signal processing unit is for accessing the input signal of described outside, and to described input signal amplify, filtering and signals collecting.
8. the Network Based and synchronous large-scale data acquisition system of tandem type distributed power supply as claimed in claim 1, is characterized in that, signal processing unit comprises described in every road:
Programmable gain amplifier, for receiving the input signal of described outside, and according to the multiplication factor of the described programmable gain amplifier of amplitude size adjustment of described input signal;
Bank of filters, described bank of filters is connected with the output of described programmable gain amplifier, for described input signal is carried out to filtering;
Gradual approaching A/D converter, the input of described gradual approaching A/D converter is connected with the output of described bank of filters, for being carried out to signals collecting, filtered signal obtains image data, and by described spi bus, described image data is sent to described the second CPU, wherein, described the second CPU is also for carrying out analyzing and processing and being sent to described main power source station to described image data.
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