CN107894528A - High speed synchronous sample system - Google Patents
High speed synchronous sample system Download PDFInfo
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- CN107894528A CN107894528A CN201711009392.8A CN201711009392A CN107894528A CN 107894528 A CN107894528 A CN 107894528A CN 201711009392 A CN201711009392 A CN 201711009392A CN 107894528 A CN107894528 A CN 107894528A
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- 230000001360 synchronised effect Effects 0.000 title claims abstract description 18
- 238000005070 sampling Methods 0.000 claims abstract description 26
- 238000007726 management method Methods 0.000 claims description 13
- 238000003860 storage Methods 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 10
- 238000013500 data storage Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 5
- 230000009466 transformation Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000003139 buffering effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 14
- 230000005611 electricity Effects 0.000 description 8
- 239000003990 capacitor Substances 0.000 description 5
- 230000003750 conditioning effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000004224 protection Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000010056 antibody-dependent cellular cytotoxicity Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2506—Arrangements for conditioning or analysing measured signals, e.g. for indicating peak values ; Details concerning sampling, digitizing or waveform capturing
- G01R19/2509—Details concerning sampling, digitizing or waveform capturing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/088—Aspects of digital computing
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Tests Of Electronic Circuits (AREA)
Abstract
The invention provides high speed synchronous sample system, including analog/digital signal pinboard, host control panel and power panel；The analog/digital signal pinboard includes：4 road voltage transformer circuits, voltage sampling signal modulate circuit, 4 road current transformer circuits, current sampling signal modulate circuit, digital I/O circuits；4 road voltage transformer circuits are connected with voltage sampling signal modulate circuit, and 4 road current transformer circuits are connected with current sampling signal modulate circuit.B classes LXI high speed synchronous sample modules individual module of the present invention can at most access 8 passages, and multiple TT＆C system combinations can carry out unlimited extension to port number.This module is based on LXI buses, is internally integrated the chronometer time synchronous protocols of IEEE 1588, it is possible to achieve the timing tracking accuracy of nanosecond.
Description
Technical field
The present invention relates to a kind of circuit of B classes LXI high speed synchronous sample inside modules.
Background technology
With the fast development of micro-capacitance sensor, its load form of micro-capacitance sensor is also more and more diversified, as this quasi-nonlinear of radar
Load easilys lead to the impact of power network, causes the load of power network fluctuation and often influences the normal of micro-capacitance sensor inside miscellaneous equipment
Operation, serious situation can make micro-capacitance sensor inside in paralyzed state, and detect the source of trouble with traditional method, waste time and energy,
Often result does not reach expected effect, and carries out micro-capacitance sensor voltage electric current by B classes LXI high speed synchronous samples module of the present invention
Real-time monitoring, the source of trouble that impact can be produced to power network carry out tripping protection and be effectively protected micro-capacitance sensor internal unit in advance
Normal operation.The module uses standard LAN communication interfaces, facilitates the distributed extension of system and taking for real-time monitoring system
Build.
At present, when subject study is done by universities and colleges or scientific research institutions, voltage and current data especially to micro-capacitance sensor are carried out
When test, storage and analysis, experimental data sampling is typically carried out using oscillograph, it is less that this method is only suitable for passage
Situation, when the channel data for requiring test is more if oscillograph seem and prove definitely inferior, and use it is extremely inconvenient.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention is based on LXI bus mark standards, there is provided one
Kind B class LXI high speed synchronous sample modules.
Technical scheme：
High speed synchronous sample system, including analog/digital signal pinboard, host control panel and power panel；
The analog/digital signal pinboard includes：
4 road voltage transformer circuits are used to the high voltage signal of outside input being converted into low voltage signal；
Voltage sampling signal modulate circuit is used for low voltage signal filtering, the amplification of voltage transformer circuit output；
4 road current transformer circuits are used to the high current signal of outside input being converted into low voltage signal；
Current sampling signal modulate circuit is used for low voltage signal filtering, the amplification of current transformer circuit output；
Digital I/O circuits are used for the input processing of external switch amount signal and the output processing of on-off model；
4 road voltage transformer circuits are connected with voltage sampling signal modulate circuit, and 4 road current transformer circuits are adopted with electric current
Sample signal conditioning circuit connects；
The host control panel includes：
Mixed signal controller circuitry is used to gather analog signal, and analog signal input multiplexer is entered into row of channels and cut
Change, buffer；The ADC being internally integrated by it carries out analog-to-digital conversion, and data processing, data storage are carried out to ADC transformation result；
Storage circuit is used for the non-volatile data storage of power down；
Outer clock circuit is used to provide clock source for mixed signal controller；
LAN interface circuit is used for data receiver and the transmission of LXI buses；
Electric power management circuit connects power panel, conversion and monitoring for voltage；
Storage circuit, outer clock circuit, LAN interface circuit, electric power management circuit are electric with mixed signal controller respectively
Road connects；
The power panel is used to provide 3 groups of working powers to host control panel, and controls the break-make of power supply.
The analog/digital signal pinboard also includes LED indicating circuit, for indicating the system work shape of acquisition module
State.
The host control panel also includes：
Debugging interface circuit is used for the on-line debugging of program and the download of program；
Usb circuit is used for the data communication of outside USB flash disk；
Reseting switch circuit is used for external trigger and switched to acquisition module progress system reset；
The debugging interface circuit, usb circuit, reseting switch circuit connect with mixed signal controller circuitry respectively
Connect.
Beneficial effect：
1. the mixed signal controller of the B class LXI high speed synchronous sample modules is internally integrated the SAR types of two 16
ADC, each ADC include 4 tunnels multiplexing input channel, and two ADC amount to 8 road signal sampling passages, and each passage includes signal
Modulate circuit, the ADCC controllers inside mixed signal controller automatically control two ADC and sampled, single pass sampling speed
Rate reaches as high as 2.63Msa/s, and sampled data deposit is internally integrated by dma mode the one-level SRAM of 384KB capacity, mixes
Close signal controller read SRAM in sampled data, data are handled, process and data communication etc..
2. ferroelectric memory U101 of the present invention, maximum read/write number 10,000,000,000 times, data storage is not lost for 45 years, writes number
According to without waiting for.
Brief description of the drawings
Fig. 1 is the schematic diagram of B classes LXI high speed synchronous sample modules of the present invention；
Fig. 2 is analog/digital signal conversion plate circuit theory diagrams of the present invention；
Wherein, Fig. 2 a are No. 4 voltage transformers, voltage sampling signal modulate circuit schematic diagram；Fig. 2 b are 4 road Current Mutual Inductances
Device, current sampling signal modulate circuit schematic diagram；Fig. 2 c are digital I/O circuits and LED indicating circuit schematic diagram；
Fig. 3 is host control panel circuit theory diagrams of the present invention；
Wherein, Fig. 3 a are mixed signal controller, outer clock circuit schematic diagram；Fig. 3 b A/D interface circuit theories
Figure；Fig. 3 c are storage circuit, debugging interface circuit theory diagrams；Fig. 3 d are LAN interface circuit theory diagrams；Fig. 3 e are USB interface electricity
Road schematic diagram；Fig. 3 f are electric power management circuit schematic diagram；
Fig. 4 is power board circuit theory diagrams of the present invention；
Wherein, Fig. 4 a are power circuit principle figure；Fig. 4 b are power switch circuit schematic diagram.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
Fig. 1 is the schematic diagram of B classes LXI high speed synchronous sample modules of the present invention；As shown in figure 1, the B classes LXI of the present invention is high
Fast synchronous data collection module, including analog/digital signal pinboard, host control panel and power panel.Analog/digital is believed
Number pinboard includes No. 4 voltage transformers, voltage sampling signal modulate circuit, No. 4 current transformers, current sampling signal conditioning
Circuit, digital I/O circuits, LED indicating circuit；Host control panel includes mixed signal controller, storage circuit, debugging interface electricity
Road, outer clock circuit, LAN interface circuit, usb circuit, electric power management circuit and reseting switch circuit；Power panel includes
Power switch circuit and power circuit.
Analog/digital signal pinboard is used for the high voltage of outside input, that high current signal is converted into sampled signal is defeated
Go out the ADC being internally integrated to mixed signal controller and carry out analog-to-digital conversion, while outside digital input signals are nursed one's health, be defeated
Go out to give the processing of mixed signal controller, and outside control is given the data signal conditioning output of mixed signal controller output
Equipment, LED indicating circuit are used for the working condition for indicating system；Host control panel is used to carry out voltage, current sampling signal
Buffering, filtering and sampling, storage circuit are used to store non-volatile parameter, and debugging interface circuit is used for the debugging of program with
Carrying, outer clock circuit provides clock source for mixed signal controller, and LAN interface circuit communicates for Ethernet external data,
Usb circuit supports the file access of USB flash disk and program upgrading, reseting switch circuit to be used for external trigger system reset.Electricity
Voltage of the power management circuits the voltage conversion that power panel provides into system worked well；Power panel provides electricity for acquisition module
Source, power switch circuit are used for the break-make for controlling power supply.
Wherein, 4 road voltage transformer circuits are used to the high voltage signal of outside input being converted into low voltage signal；Voltage
Sampled signal modulate circuit is used for low voltage signal filtering, the amplification of voltage transformer circuit output；No. 4 current transformer electricity
Road is used to the high current signal of outside input being converted into low voltage signal；Current sampling signal modulate circuit is used for electric current is mutual
Low voltage signal filtering, the amplification of sensor circuit output；Digital I/O circuits be used for external switch amount signal input processing and
The output processing of on-off model；LED indicating circuit is used for the working state of system for indicating acquisition module, such as power supply instruction, LAN
Communication instruction etc..
Mixed signal controller circuitry is for gathering analog signal, analog signal input multiplexer enters row of channels and cut
The ADC change, buffer, being internally integrated carries out analog-to-digital conversion, and data processing, data storage are carried out to ADC transformation result.Mixing letter
Number controller is internally integrated ethernet mac controller, IEEE1588 Clock managements module, USB controller, FRAM memory, real
The now processing of USB communications, ethernet communication, program storage and USB, LXI bus protocol；
Storage circuit is used for the non-volatile data storage of power down；Debugging interface circuit is used for the on-line debugging and journey of program
The download of sequence；Outer clock circuit is used to provide clock source for mixed signal controller；LAN interface circuit is used for LXI buses
Data receiver is with sending；Usb circuit is used for the data communication of outside USB flash disk, realizes the real-time storage and program of sampled data
Upgrading；Reseting switch circuit is used for external trigger and switched to acquisition module progress system reset；Electric power management circuit is used for voltage
Conversion and monitoring.
Power circuit is used to provide 3 groups of working powers to host control panel；Power switch circuit is used to control general supply
Break-make.
Analog/digital signal conversion plate includes 4 road Miniature precision AC voltage transformer circuits, voltage sampling signal is nursed one's health
Circuit, 4 road bus built-in type miniature precision AC current transformer circuits, current sampling signal modulate circuit, digital I/O electricity
Road and LED indicating circuit.As shown in Fig. 2 the Miniature precision AC voltage transformer circuit is defeated including external communication high voltage
Incoming interface (J200), current-limiting resistance (R201, R204, R208, R211, R215, R218, R222, R225), Miniature precision exchange
Voltage transformer (PT200-PT203)；The voltage sampling signal modulate circuit includes diode (D200-D207), feedback electricity
Hinder (R202, R209, R216, R223), filter capacitor (C200, C204, C208, C212), build-out resistor (R203, R200,
R205, R206, R210, R207, R212, R213, R217, R214, R219, R220, R224, R221, R226, R227), computing
Amplifier (U200-U203), voltage sampling signal conditioning output interface (J100)；The bus built-in type miniature precision alternating current
Current transformer circuit includes external communication high current input interface (J300), bus built-in type miniature precision AC current transformer
(CT300-CT303)；The current sampling signal modulate circuit include diode (D300-D307), feedback resistance (R301,
R306, R311, R316), filter capacitor (C300, C304, C308, C312), build-out resistor (R300, R302-R304, R305,
R307-R309, R310, R312-R314, R315, R317-R319), operational amplifier (U300-U303), current sampling signal adjust
Manage output interface (J100)；The digital I/O circuits include digital I/O signal input output interfaces (J102)；The LED refers to
Show that circuit includes light-emitting diode display module LED100.
Host control panel include mixed signal controller circuitry, storage circuit, debugging interface circuit, outer clock circuit,
LAN interface circuit, usb circuit, electric power management circuit and reseting switch circuit.As shown in figure 3, the mixed signal control
Device circuit includes mixed signal controller (U100), operational amplifier (U102), IEEE1588 synchronised clocks debugging mouth (J301)；
The storage circuit includes ferroelectric memory FRAM (FM24C256), pull-up resistor (R1, R101)；The debugging interface circuit
Including jtag interface (J101), resistance (R104-R107, R112-R113)；The outer clock circuit vibrates including quartz crystal
Device (U103), resistance (R111)；The LAN interface circuit includes ethernet transceiver (U300), quartz oscillator
(U301), RJ45 interfaces (J300), terminal resistance (R303-R306), filter capacitor (C305-C308)；The USB interface electricity
Road includes USB external interfaces (J400), USB power supply managements (U400), ESD protections (D400)；The electric power management circuit includes
Power input interface (J500), power management chip (U500), light emitting diode (D500-D501)；The reseting switch circuit
Including external reset interface (J100).
Power panel includes power circuit, power switch circuit.As shown in figure 4, the power circuit includes piezo-resistance
VF1, thermistor RT1, AC/DC power module (U1), Transient Suppression Diode (TVS1), DC/DC power modules (U2-U3),
Power input interface (CN1), power output interface (CN2), filter capacitor (C3, C5-C7, C10, C12)；The power switch
Circuit includes power input interface (J1), fuse (FUSE), wave filter (EMI), on-off switch (K1), power output interface
(J2)。
Described above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (4)
1. high speed synchronous sample system, it is characterised in that：Including analog/digital signal pinboard, host control panel and power supply
Plate；
The analog/digital signal pinboard includes：
4 road voltage transformer circuits are used to the high voltage signal of outside input being converted into low voltage signal；
Voltage sampling signal modulate circuit is used for low voltage signal filtering, the amplification of voltage transformer circuit output；
4 road current transformer circuits are used to the high current signal of outside input being converted into low voltage signal；
Current sampling signal modulate circuit is used for low voltage signal filtering, the amplification of current transformer circuit output；
Digital I/O circuits are used for the input processing of external switch amount signal and the output processing of on-off model；
4 road voltage transformer circuits are connected with voltage sampling signal modulate circuit, and 4 road current transformer circuits are believed with current sample
The connection of number modulate circuit；
The host control panel includes：
Mixed signal controller circuitry be used for gather analog signal, by analog signal input multiplexer enter row of channels switching,
Buffering；The ADC being internally integrated by it carries out analog-to-digital conversion, and data processing, data storage are carried out to ADC transformation result；
Storage circuit is used for the non-volatile data storage of power down；
Outer clock circuit is used to provide clock source for mixed signal controller；
LAN interface circuit is used for data receiver and the transmission of LXI buses；
Electric power management circuit connects power panel, conversion and monitoring for voltage；
Storage circuit, outer clock circuit, LAN interface circuit, electric power management circuit connect with mixed signal controller circuitry respectively
Connect；
The power panel is used to provide 3 groups of working powers to host control panel, and controls the break-make of power supply.
2. high speed synchronous sample system according to claim 1, it is characterised in that：The analog/digital signal pinboard
Also include LED indicating circuit, for indicating the working state of system of acquisition module.
3. high speed synchronous sample system according to claim 1, it is characterised in that：The host control panel also includes：
Debugging interface circuit is used for the on-line debugging of program and the download of program；
Usb circuit is used for the data communication of outside USB flash disk；
Reseting switch circuit is used for external trigger and switched to acquisition module progress system reset；
The debugging interface circuit, usb circuit, reseting switch circuit are connected with mixed signal controller circuitry respectively.
4. high speed synchronous sample system according to claim 1, it is characterised in that：The memory is FRAM memory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009392.8A CN107894528A (en) | 2017-10-25 | 2017-10-25 | High speed synchronous sample system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009392.8A CN107894528A (en) | 2017-10-25 | 2017-10-25 | High speed synchronous sample system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107894528A true CN107894528A (en) | 2018-04-10 |
Family
ID=61803811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711009392.8A Pending CN107894528A (en) | 2017-10-25 | 2017-10-25 | High speed synchronous sample system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10215025A1 (en) * | 2002-04-03 | 2003-10-16 | Kries Energietechnik Gmbh & Co | Detecting/locating 3-phase network earth shorts, short circuits involves using criterion to decide if current detected fault will be displayed instead of or in addition to currently displayed fault(s) |
| CN201117094Y (en) * | 2007-08-06 | 2008-09-17 | 电信科学技术第五研究所 | Cable testing system |
| CN102436735A (en) * | 2011-12-20 | 2012-05-02 | 陕西海泰电子有限责任公司 | B type LXI (LAN eXtensions for Instrumentation) synchronous data acquisition instrument |
| CN104297639A (en) * | 2014-11-07 | 2015-01-21 | 广东电网有限责任公司电力科学研究院 | Fault traveling wave collecting device and system for medium voltage distribution network |
| CN105486914A (en) * | 2015-11-22 | 2016-04-13 | 国网辽宁省电力有限公司朝阳供电公司 | AC sampling device of electricity larceny preventive power load monitoring system |
| CN107153152A (en) * | 2017-07-19 | 2017-09-12 | 云南电网有限责任公司电力科学研究院 | A kind of grid adaptability test device |
-
2017
- 2017-10-25 CN CN201711009392.8A patent/CN107894528A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10215025A1 (en) * | 2002-04-03 | 2003-10-16 | Kries Energietechnik Gmbh & Co | Detecting/locating 3-phase network earth shorts, short circuits involves using criterion to decide if current detected fault will be displayed instead of or in addition to currently displayed fault(s) |
| CN201117094Y (en) * | 2007-08-06 | 2008-09-17 | 电信科学技术第五研究所 | Cable testing system |
| CN102436735A (en) * | 2011-12-20 | 2012-05-02 | 陕西海泰电子有限责任公司 | B type LXI (LAN eXtensions for Instrumentation) synchronous data acquisition instrument |
| CN104297639A (en) * | 2014-11-07 | 2015-01-21 | 广东电网有限责任公司电力科学研究院 | Fault traveling wave collecting device and system for medium voltage distribution network |
| CN105486914A (en) * | 2015-11-22 | 2016-04-13 | 国网辽宁省电力有限公司朝阳供电公司 | AC sampling device of electricity larceny preventive power load monitoring system |
| CN107153152A (en) * | 2017-07-19 | 2017-09-12 | 云南电网有限责任公司电力科学研究院 | A kind of grid adaptability test device |
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Application publication date: 20180410 |