CN106933201A - The collection of digitlization engine speed and processing unit - Google Patents
The collection of digitlization engine speed and processing unit Download PDFInfo
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- CN106933201A CN106933201A CN201511031689.5A CN201511031689A CN106933201A CN 106933201 A CN106933201 A CN 106933201A CN 201511031689 A CN201511031689 A CN 201511031689A CN 106933201 A CN106933201 A CN 106933201A
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- 238000012545 processing Methods 0.000 title claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 58
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 17
- 230000001105 regulatory effect Effects 0.000 claims abstract description 7
- 239000011159 matrix material Substances 0.000 claims abstract description 3
- 230000003750 conditioning effect Effects 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 229910052770 Uranium Inorganic materials 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 101000860173 Myxococcus xanthus C-factor Proteins 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000004092 self-diagnosis Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/41875—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by quality surveillance of production
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Small-Scale Networks (AREA)
Abstract
Rotating speed and measurement of power loss field the invention belongs to slewing, and in particular to one kind digitlization engine speed collection and processing unit.The device includes mother matrix, power panel I, power panel II, communication board I, communication board II, communication board III, signal regulating panel, alarm board, LCDs, power panel I, power panel II, communication board I, communication board II, communication board III, signal regulating panel, alarm board are inserted on motherboard, connected by motherboard, the COM of liquid crystal touch screen is connected with alarm board.It is of the invention mainly to be realized using the single chip circuit based on arm processor, increased network redundancy and power supply redundancy design, compared with the same device before the country, have the advantages that small volume, low in energy consumption, simple structure, toggle speed be fast, good stability, reliability high, low production cost, convenient operating maintenance.
Description
Technical field
Rotating speed and measurement of power loss field the invention belongs to slewing, and in particular to one kind digitlization main frame turns
Speed collection and processing unit.
Background technology
With the high speed development of modern electronic technology, Signal acquiring and processing technology have become power electronics with
The hot technology of communication technical field.In order to solve magnanimity engine speed in production process collection, transmission with
Process problem, is most efficient method using the Signal acquiring and processing technology in technical field of electronic communication.
Chinese patent (CN103699702A) discloses a kind of ultra-high-speed data acquisition and processing unit, device master
The data acquisition and procession method wanted is to carry out scaling down processing by the output clock to A/D converter, is obtained
Frequency-dividing clock；Data pick-up treatment is carried out to frequency-dividing clock again, the data of each passage are obtained.This method
Shortcoming be that data need to be buffered in buffering area, for mass data, handling capacity and the bit error rate turn into most
Big problem.The present invention is a kind of high-speed digitization signal acquisition and place based on Signal acquiring and processing technology
Reason device, effectively solves the collection of magnanimity engine speed in uranium enrichment production process, transmission and is asked with treatment
Topic.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of collection of digitlization engine speed and processing unit, solution
The certainly corresponding problem of engine speed and power consumption monitoring device.The present invention can realize master in uranium enrichment production process
The measurement of the rotating speed and power consumption of machine, judges whether the running status of main frame is normal according to measured value, automatically forms
Various alarm signals and accident protection signal, the more preferable safety for ensureing the main production line of uranium enriching plant,
Continuous operation.The present invention supporting with another kind invention " multi-channel intelligent main frame frequency signal detects box " need to make
With, the measurement and treatment of All hosts rotating speed and power consumption in a section are completed jointly, all masters are shown on the spot
The tachometer value of machine, power consumption number and abnormal state information, prison is uploaded under automatic running operating mode by alarm signal
Control the server of room.
In order to solve the above technical problems, a kind of digitlization engine speed collection of the present invention and processing unit, the dress
Put including mother matrix, power panel I, power panel II, communication board I, communication board II, telecommunication circuit
Plate III, signal regulating panel, alarm board, LCDs, power panel I, power panel II, communication board
I, communication board II, communication board III, signal regulating panel, alarm board are inserted on motherboard, by mother
Plate is connected, and the COM of liquid crystal touch screen is connected with alarm board.
Also have on motherboard some RS485 interfaces, DC24V interfaces, two AC220V power interfaces, two with
Too Netcom's communication interface, alarm signal output interface, alarm lamp power output interface, intermediate frequency AC380V power supplys are defeated
Incoming interface.
The power panel I, the voltage input end of power panel II are connected with the AC220V power interfaces on motherboard,
Its output end connects the input of power supply redundancy circuit.
The inner high speed serial communication bus port of the warning circuit plate by motherboard respectively with telecommunication circuit
Plate, the inner high speed serial communication bus port of signal conditioning circuit plate are connected, with the Ethernet on motherboard
Communication interface is connected, and alarm signal output ends are connected with the alarm signal output interface on motherboard.
5. a kind of digitlization engine speed according to claim 4 is gathered and processing unit, and its feature exists
In the inner high speed COM of the signal conditioning circuit plate is interior with warning circuit plate by motherboard
Portion high speed communication port is connected, and its intermediate frequency AC380V power output ends are by motherboard and intermediate frequency AC380V electricity
Source input interface is connected.
The power input of liquid crystal touch display screen is connected with redundant power output end, its PORT COM with report
The special liquid crystal touch display screen interface of alert circuit board is connected.
Advantageous Effects of the invention are：It is of the invention main electromechanical using the monolithic based on arm processor
Road realizes, increased network redundancy and power supply redundancy design, compared with the same device before the country, tool
Have that small volume, low in energy consumption, simple structure, toggle speed fast, good stability, reliability be high, production cost
The advantages of low, convenient operating maintenance.
Brief description of the drawings
Fig. 1 is a kind of digitlization engine speed collection of the present invention and processing unit structured flowchart；
Fig. 2 is a kind of digitlization engine speed collection of the present invention and process flow figure.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
As shown in figure 1, a kind of digitlization engine speed of the present invention is gathered and processing unit, the device includes mother
Version, power panel I, power panel II, communication board I, communication board II, communication board III, letter
Number conditioning plate, alarm board, LCDs, some RS485 interfaces, DC24V interfaces, two AC220V
Power interface, two ethernet communication interfaces, alarm signal output interface, alarm lamp power output interface,
Intermediate frequency AC380V power input interfaces, power panel I, power panel II, communication board I, communication board
II, communication board III, signal regulating panel, alarm board are inserted on motherboard by the double connector of 64 pins,
Linked together by motherboard, the COM of liquid crystal touch screen is connected by 4 core winding displacements with alarm board；
There are 12 RS485 interfaces, DC24V interfaces, two AC220V power interfaces, two ether on motherboard
Netcom's communication interface, alarm signal output interface, alarm lamp power output interface, intermediate frequency AC380V power inputs
Interface.
3 pieces of communication boards are had in device, it is main to be responsible for being shelved with installed in technique by RS485 buses
Interior " multi-channel intelligent main frame frequency signal detects box " carries out data communication, and serial by inner high speed
Communication bus is communicated with alarm board.Each communication board has 4 RS485 PORT COMs, by motherboard point
It is not connected with 4 RS485 communication interfaces in template, the DC24V power inputs of alarm board
It is connected with the redundancy output end of power panel.
Have 2 pieces of power panels in device, be mainly responsible for circuit board in device, liquid crystal touch display screen and
Outside section alarm lamp, " multi-channel intelligent main frame frequency signal detects box " offer working power.2 blocks of electricity
The voltage input end of source plate is connected with the AC220V power interfaces on motherboard, its output end connection power supply redundancy
The input of circuit, it is 1 that 2 road DC24V power supplys are closed into 2, then the power end with other circuit boards of device inside
And RS485 interface powers end on motherboard, alarm lamp power output end are connected.
There is 1 piece of alarm board in device, for receiving data from communication board, signal regulating panel, to receiving
To data be analyzed treatment, form various alarm signals, data and alarm signal output are touched to liquid crystal
Touching carries out alarm indication on display screen, and alarm signal is sent to the data, services of Control Room by Ethernet
Device, alarm signal is sent to cascade control system by alarm signal output interface.Warning circuit plate it is interior
Portion high speed serial communication bus port by motherboard respectively with communication board, the inside of signal conditioning circuit plate
High speed serial communication bus port is connected, and is connected with the ethernet communication interface on motherboard, alarm signal
Output end is connected with the alarm signal output interface on motherboard.
There is 1 block signal modulate circuit plate in device, the main power network for being responsible for 2 road intermediate frequency AC380V power supplys of measurement
Frequency, sends measurement result to alarm board.The inner high speed COM of signal conditioning circuit plate leads to
Cross motherboard to be connected with the inner high speed PORT COM of warning circuit plate, its intermediate frequency AC380V power output ends lead to
Motherboard is crossed to be connected with intermediate frequency AC380V power input interfaces.
1 piece of liquid crystal touch display screen is installed on device front panel, is mainly used in showing rotating speed, the power consumption of main frame
And all kinds of alarm signals, while play keyboard, for carrying out various execute-in-places and parameter setting.
The power input of liquid crystal touch display screen is connected with redundant power output end, and its PORT COM is electric with alarm
The special liquid crystal touch display screen interface of road plate is connected.
There are 12 alarm lamps on the front panel of device, alarm lamp uses red, green 2 kinds of colors, uses
In the working condition and alarm signal of display device.Alarm lamp is directly by winding displacement and warning circuit plate
Alarm signal output ends mouthful be connected.
Device can according to default condition automatically form separate unit step-out OB, separate unit damage OP, in groups step-out TB,
TP, in groups separate unit step-out elementary errors OBW, step-out elementary errors TBW, separate unit communication failure OC, in groups are damaged in groups
The alarm signals such as communication failure EC, hostdown C, accident protection A3, resultant fault CH.
12 alarm lamps are installed, its function is defined as follows on the front panel of device：
Resultant fault (CH)：When there is CH signals, indicator lamp is changed into red, and otherwise, indicator lamp goes out；
Communication failure (EC)：When there is EC signals, indicator lamp is changed into red, and otherwise, indicator lamp goes out；
Hostdown (C)：When there is C signal, indicator lamp is changed into red, and otherwise, indicator lamp goes out；
Accident protection (A3)：When there is A3 signals, indicator lamp is changed into red, and otherwise, indicator lamp goes out；
Power network is all the way：When the tunnel frequency of power network 1 exceeds prescribed limit, power network fault-signal all the way is formed, indicated
Lamp is changed into red, and otherwise, indicator lamp is green；
The tunnel of power network two：When the tunnel frequency of power network 2 exceeds prescribed limit, the road fault-signal of power network two is formed, indicated
Lamp is changed into red, and otherwise, indicator lamp is green；
Power supply is all the way：When first piece of power panel output voltage be not in the range of 24 ± 1V, power failure is formed
Signal, indicator lamp is changed into red, and otherwise, indicator lamp is green；
The tunnel of power supply two：When second piece of power panel output voltage be not in the range of 24 ± 1V, power failure is formed
Signal, indicator lamp is changed into red, and otherwise, indicator lamp is green；
Outside operating mode：When server has the instruction of request of data to device, outside working condition signal is produced, referred to
Show that lamp is changed into green, otherwise, indicator lamp goes out；
Ethernet A：When device cannot set up network connection by first ethernet port with Control Room server
When, indicator lamp is changed into red, and otherwise, indicator lamp is green；
Ethernet B：When device cannot set up network connection by second ethernet port with Control Room server
When, indicator lamp is changed into red, and otherwise, indicator lamp is green；
Plate failure：When device self diagnosis finds one of or several piece of board failure, indicator lamp is changed into
Red, otherwise, indicator lamp does not work.
The function of board connector is defined as follows behind device：
RS485 and DC24V power interfaces, are 4 core aviation sockets, respectively with 3 pieces of PORT COMs of communication board
It is connected, the multi-channel intelligent main frame frequency signal for connecting outside detects box, wherein 1,2 pin is serial
Bus, 3,4 pin are used to export DC24V dc sources；
Alarm node：7 core air plugs, for outputting communication failure EC, hostdown C, accident protection A3,
4 alarm signals such as resultant fault CH；
Alarm lamp：3 core air plugs, for connecting 2 alarm lamps.Wherein 1,2 pin connection alarm lamp 1,3,
2 pin connect alarm lamp 2；
Network interface 1, network interface 2：RJ45 sockets, for connecting central control room server；
Power supply 1, power supply 2：3 core air plugs, for being input into 2 road AC220V power supplys；
Power network 1, power network 2：2 core air plugs, for being input into 2 road AC380V intermediate frequency power supply signals.
The main of device has lifting/lowering week 2 kinds of working methods of operating mode and nominal situation, and each way is divided into automatically again
2 kinds of modes on the spot, the working method of device acquiescence is the automated manner under nominal situation.In different works
Under condition, device produces the threshold value of alarm signal different, under Work in Place mode, except resultant fault signal CH
Outward, All Alerts signal is not exported only showing on the spot to outside.The working method of device can be in liquid crystal
Touch and selected on display interface.
The workflow of device is summarized as follows：
On device after electricity, the DC24V power supplys of No. 2 power panels outputs redundancy all the way, for other circuit boards are provided can
The working power leaned on, signal conditioning circuit plate, communication board, warning circuit plate, liquid crystal touch display screen
Enter working condition simultaneously, acquiescence works under the automatic running mode of nominal situation, and warning circuit plate starts
Detection DC2V supply voltage values, and judge whether it is normal, result is sent into liquid crystal touch display screen and is shown；
Data requesting instructions are sent to communication board and signal conditioning circuit plate, starts to receive communication board and letter
Engine speed and intermediate frequency power supply frequency values that number modulate circuit plate is returned, the data to receiving are analyzed and locate
Reason, judges whether to form hostdown signal and intermediate frequency power supply frequency fault signal, if it has, by alarm signal
Number server is sent to by ethernet port, while alarm signal is sent into liquid crystal touch screen alarm and LED
Alarm lamp shows；Whether detection ethernet port has server to send the instruction of request of data, if it has, then
Server to is sent engine speed or power consumption, intermediate frequency power supply frequency by ethernet port.Signal condition electricity
After road plate works on power, start to measure intermediate frequency power supply frequency values, then detect the presence of request of data or data connect
Instruction is received, if data requesting instructions, then the grid frequency value of measurement is sent to warning circuit plate, such as
Fruit has data receiver request instruction, then receive the data that warning circuit plate sends, and data are analyzed with treatment
Afterwards, by relay to outside output alarm signal.After communication board works on power, to the " many of outside
Passage smart host frequency signal detects box " data requesting instructions are sent, then start to receive one by one and " lead to more
The data that road smart host frequency signal detection box " sends, after data are all received, are stored in data and delay
Area is deposited, the data requesting instructions that warning circuit plate sends is detected whether, if it has, then by data buffer area
Interior data send warning circuit plate to.
Signal conditioning circuit plate, communication board in device, warning circuit plate are equipped with download program and adjust
Examination port, for download online program.The download program interface of device is JTAG, and download program uses JTAG
SW patterns, the pattern using 4 leads download, take circuit board resources it is small, flexibly and easily.Four leads
Connection be allocated as follows table.
Claims (6)
1. a kind of collection of digitlization engine speed and processing unit, it is characterised in that the device include mother matrix,
Power panel I, power panel II, communication board I, communication board II, communication board III, signal are adjusted
Reason plate, alarm board, LCDs, power panel I, power panel II, communication board I, communication board
II, communication board III, signal regulating panel, alarm board are inserted on motherboard, are connected by motherboard, and liquid crystal is touched
The COM for touching screen is connected with alarm board.
2. a kind of digitlization engine speed according to claim 1 is gathered and processing unit, and its feature exists
In, also have on motherboard some RS485 interfaces, DC24V interfaces, two AC220V power interfaces, two with
Too Netcom's communication interface, alarm signal output interface, alarm lamp power output interface, intermediate frequency AC380V power supplys are defeated
Incoming interface.
3. a kind of digitlization engine speed according to claim 2 is gathered and processing unit, and its feature exists
In, the power panel I, the voltage input end of power panel II are connected with the AC220V power interfaces on motherboard,
Its output end connects the input of power supply redundancy circuit.
4. a kind of digitlization engine speed according to claim 3 is gathered and processing unit, and its feature exists
In the inner high speed serial communication bus port of, the warning circuit plate by motherboard respectively with communication board,
The inner high speed serial communication bus port of signal conditioning circuit plate is connected, with the ethernet communication on motherboard
Interface is connected, and alarm signal output ends are connected with the alarm signal output interface on motherboard.
5. a kind of digitlization engine speed according to claim 4 is gathered and processing unit, and its feature exists
In the inner high speed COM of the signal conditioning circuit plate is interior with warning circuit plate by motherboard
Portion high speed communication port is connected, and its intermediate frequency AC380V power output ends are by motherboard and intermediate frequency AC380V electricity
Source input interface is connected.
6. a kind of digitlization engine speed according to claim 5 is gathered and processing unit, and its feature exists
In, the power input of liquid crystal touch display screen is connected with redundant power output end, its PORT COM with report
The special liquid crystal touch display screen interface of alert circuit board is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511031689.5A CN106933201A (en) | 2015-12-31 | 2015-12-31 | The collection of digitlization engine speed and processing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511031689.5A CN106933201A (en) | 2015-12-31 | 2015-12-31 | The collection of digitlization engine speed and processing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106933201A true CN106933201A (en) | 2017-07-07 |
Family
ID=59444227
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| CN201511031689.5A Pending CN106933201A (en) | 2015-12-31 | 2015-12-31 | The collection of digitlization engine speed and processing unit |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135894A (en) * | 2007-09-30 | 2008-03-05 | 江阴众和电力仪表有限公司 | Built-in rotating machinery operation monitoring protecting equipment and setting method thereof |
| CN101615013A (en) * | 2009-04-14 | 2009-12-30 | 中国船舶重工集团公司第七一二研究所 | Data collector and data processing method thereof |
| CN102323802A (en) * | 2011-06-07 | 2012-01-18 | 江苏华豪航海电器有限公司 | Safety protection control system for marine engine |
| WO2012124157A1 (en) * | 2011-03-15 | 2012-09-20 | オムロン株式会社 | Motor speed measurement device and motor speed monitoring device |
| CN102692298A (en) * | 2012-06-13 | 2012-09-26 | 中国船舶重工集团公司第七0四研究所 | On-site dynamic balance monitoring correcting device and method of high-speed rotary machinery for boat |
| CN102748214A (en) * | 2012-07-10 | 2012-10-24 | 国电联合动力技术有限公司 | Wind generation set state monitoring and fault diagnosis system coupled to control system |
| JP5195685B2 (en) * | 2009-07-31 | 2013-05-08 | 富士電機株式会社 | Rotational speed sensor and rotational speed monitoring device |
| CN104122822A (en) * | 2014-07-25 | 2014-10-29 | 成都蓝宇科维科技有限公司 | GPRS (General Packet Radio Service)-based environment data exchanger |
-
2015
- 2015-12-31 CN CN201511031689.5A patent/CN106933201A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135894A (en) * | 2007-09-30 | 2008-03-05 | 江阴众和电力仪表有限公司 | Built-in rotating machinery operation monitoring protecting equipment and setting method thereof |
| CN101615013A (en) * | 2009-04-14 | 2009-12-30 | 中国船舶重工集团公司第七一二研究所 | Data collector and data processing method thereof |
| JP5195685B2 (en) * | 2009-07-31 | 2013-05-08 | 富士電機株式会社 | Rotational speed sensor and rotational speed monitoring device |
| WO2012124157A1 (en) * | 2011-03-15 | 2012-09-20 | オムロン株式会社 | Motor speed measurement device and motor speed monitoring device |
| CN102323802A (en) * | 2011-06-07 | 2012-01-18 | 江苏华豪航海电器有限公司 | Safety protection control system for marine engine |
| CN102692298A (en) * | 2012-06-13 | 2012-09-26 | 中国船舶重工集团公司第七0四研究所 | On-site dynamic balance monitoring correcting device and method of high-speed rotary machinery for boat |
| CN102748214A (en) * | 2012-07-10 | 2012-10-24 | 国电联合动力技术有限公司 | Wind generation set state monitoring and fault diagnosis system coupled to control system |
| CN104122822A (en) * | 2014-07-25 | 2014-10-29 | 成都蓝宇科维科技有限公司 | GPRS (General Packet Radio Service)-based environment data exchanger |
Non-Patent Citations (1)
| Title |
|---|
| 百度文库: "mms6312e", 《百度文库，HTTPS://WENKU.BAIDU.COM/VIEW/4B8122AAD1F34693DAEF3E6A.HTML》 * |
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Application publication date: 20170707 |