CN201335994Y - Programmable sectional-type current control device - Google Patents
Programmable sectional-type current control device Download PDFInfo
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- CN201335994Y CN201335994Y CNU2008201995553U CN200820199555U CN201335994Y CN 201335994 Y CN201335994 Y CN 201335994Y CN U2008201995553 U CNU2008201995553 U CN U2008201995553U CN 200820199555 U CN200820199555 U CN 200820199555U CN 201335994 Y CN201335994 Y CN 201335994Y
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Abstract
The utility model discloses a programmable sectional-type current control device which comprises a current signal input module, a switching-value input interface module, a switching-value output interface module, a memory module and a microprocessor MCU (micro controller unit) module. The current signal input module is used for performing digitized sampling to three-phase analog current signals, and comparison-working out the real-time status of a group of segmented current signals; the switching-value input interface module is used for leading in status signals which reflect the external physical quantity, and is connected with an input interface of the MCU; the switching-value output interface module is used for realizing that a controller controls the external physical quantity; the memory module is used for storage demands of nonvolatile data such as adjustable controlling parameters of the device, user application programs, segmented current setting tables and the like; the microprocessor MCU module outputs a group of logical signals according to the real-time status of the signals input by the current signal input module on the basis of a pre-concerted logic control scheme, and controls electric equipment which is controlled through an output driving element.
Description
Technical field
The utility model relates to electric equipment Current Control field, relates in particular to a kind of programmable sectional type current control device.
Background technology
In sectional type Current Control---electric utility when operation,, its quantitative classification can be gone out several our interested running sections according to the ratio PI of its dynamic current size with rated current; Analyze the running section of electrical equipment facility working current, can estimate its operating condition, and guide and implement suitable control strategy.
For example: certain equipment is pressed the size of working current, and being defined as follows needs protection work section:
I1S＞(PI＞110％)；
I2S＞(PI＞150％)；
I3S＞(PI＞200％)。
And formulate following control strategy:
3 work in I1S＞time, send alerting signal, and start the inverse time lag controller;
4 work in I2S＞time, send alerting signal, after 1 second of delaying time, start the tripping operation action;
5 work in I3S＞time, start the tripping operation action immediately.
The sectional type Current Control is used widely in technical fields such as supply line's protection, Electric Machine Control.
The range of application of sectional type Current Control is quite extensive, but because the different application field may need different control strategies, makes most of application products only be confined to a kind of specific application.Nonetheless, specific products still has the possibility that can not satisfy client's specific demand.
Developing a kind of universal product that satisfies sectional type Current Control function is highly significant.
The utility model content
Technical problem to be solved in the utility model is: a kind of method and apparatus of sectional type Current Control is provided, and technology is general, exploitation is efficient, use platform flexibly for the application of sectional type Current Control Technology provides one.
Described sectional type current control device comprises:
The current signal load module is used for the three-phase simulation current signal is carried out digitized sampling, according to the sample of above-mentioned current signal collector output, calculates the amplitude of three-phase simulation electric current, relatively calculates the real-time status of a set of segmentation current signal; The switch value input interface module is used to reflect the introducing of external physical amount status signal, interface circuit by optocoupler with the input signal isolated variable after, be connected with the input interface of MCU; The switching value output interface module is used to realize the controller control of physical quantity to external world, and relay is connected with the output interface of MCU by this module; Memory module is used for the storage demand that device can be adjusted Nonvolatile datas such as controlled variable, user application, segmented current definite value table; Microprocessor MCU module according to the real-time status of above-mentioned current signal load module input signal, according to predetermined logic control scheme, is exported one group of logical signal, by the output driving element, controlled electric utility is implemented control.
Preferably, described device also comprises: communication interface modules, link to each other with microprocessor MCU module serial communication interface, and the passage with the external network communication is provided.
Preferably, the user can submit to microprocessor MCU module with predetermined logic control scheme by communication interface modules, and control device is according to this logic control scheme, and output logic signal is implemented control to controlled electric appliance equipment.
Preferably, described current signal load module comprises: the current signal collector is used for filtering and digitized sampling to the three-phase simulation current signal; Segmented current definite value table, the definition that is used to store a set of segmentation electric current variable, this form is submitted the programmable sectional type current controller to by the user; The segmented current status comparator, the sample according to above-mentioned current signal collector output calculates the amplitude of three-phase simulation electric current and contrasts above-mentioned segmented current definite value table, relatively calculates the real-time status of a set of segmentation current signal.
Preferably, described microprocessor MCU module comprises: steering logic variable PLM state table is used to register the manageable whole variable current states of PLM; Applied logic structure table, the application program that the storage user sets; The PLM communication server provides the service of user's remote programmable visit, comprises services such as reading, upgrade applied logic structure table, segmented current definite value table; The applied logic manipulater is according to applied logic structure table, operation user application.
Preferably, the manageable variable of described PLM comprises: be input to PLM segmented current class signal, open into the class signal, PLM output leave the class signal, and the register class variable that provides of PLM etc.; Each PLM variable is with a unique PLM number-mark.
Preferably, described memory module is used EEPROM, and this module links to each other with MCU by the I2 bus.
Preferably, described device also comprises: the signal lamp Drive Module, be used to connect LED light, and indicate some physical descriptor state.
Compare with present prior art, the utility model is by the sectional type Current Control, make the electrical equipment of different field, can adopt different control strategies, thereby the application's product not only is confined to a kind of specific application, the user can also send to the special processing logical scheme of oneself in the microprocessor MCU module, thereby satisfies the specific demand of particular client.
Description of drawings
Fig. 1 is the illustrative view of functional configuration of programmable sectional type current control device described in the utility model;
Fig. 2 is a programmable sectional type current control device structural drawing described in the utility model;
Fig. 3 is PLM variable numbering described in the utility model and PLM variable name mapping chart.
Embodiment
The device of a kind of programmable sectional type current controller that present embodiment provides comprises: by the front end of three-phase current signal acquisition module on three no-load voltage ratios current transformer constituent apparatus that is 5A/0.35MA; Above-mentioned current transformer primary side is that the foreign current mutual inductor of I/5A is connected by the connection terminal on the device and reflection external electrical facility working current, no-load voltage ratio; Aforementioned currents mutual inductor secondary side is connected with the A/D interface of microprocessor unit (MCU) by signal filtering, translation circuit; 8 switch value input interface of device configuration are used to reflect the introducing of external physical amount status signal; Interface circuit by optocoupler with the input signal isolated variable after, be connected with the input interface of MCU; 8 LED signal lamps of configuration are used for the indication of some physical descriptor state on the device panel; LED light is connected by driving element by the output interface of MCU; 8 output relays of device configuration, to realize the controller control of physical quantity to external world, relay is connected with the output interface of MCU by driving element; The EEPROM memory module of device configuration 32K is used for the storage demand that device can be adjusted Nonvolatile datas such as controlled variable, user application, segmented current definite value table, and this module links to each other with MCU by the I2 bus; 485 driver modules that link to each other with the MCU serial communication interface in the device provide the passage with the external network communication; The above-mentioned hardware of electric power source pair of module of dress provides working power in the device.
Contrast accompanying drawing below, by description to embodiment, to a kind of effect of programmable sectional type current control device each several part and principle, method etc., be described in further detail, design of the present utility model, technical scheme had more complete, understanding accurately to help those skilled in the art.
Fig. 1 is the illustrative view of functional configuration of a kind of programmable sectional type current control device of the utility model enforcement.Wherein:
S01 represents the current signal collector;
S02 represents the current segmenting status comparator;
S03 represents current segmenting definite value table;
S04 represents the switching signal collector;
S05 represents 485 communication receiving/transmission devices;
S06 represents relay driver;
S07 represents the signal lamp driver;
S08 represents beat generator;
P01 represents PLM variable state registration form;
P02 represents the PLM communication server;
P03 represents the applied logic manipulater;
P04 represents applied logic structure table.
The basic thought of sectional type Current Control is: with the working current of controlled electric utility, be categorized into several working stages by amplitude, be in different duties to represent it, present embodiment is used IAS1-IAS10 respectively; IBS1-IBS10; 30 logical variables such as ICS1-ICS10 are represented the residing duty of three-phase current, and above-mentioned variable is called the segmented current variable.
S03 stores the user definition of each segmented current variable, and record comprises following information field in the table:
1: electric current phase line sign: the phase current that is compared;
2: setting value;
3: return definite value;
4: comparison condition: divide greater than/less than two classes
5: compare the time;
6:PLM variable numbering: the numbering of this segmented current variable in the PLM variable.
S01 carries out digital collection to input three-phase current ia, ib, ic signal.
S02 calculates the real-time status of each segmented current variable, the operation that may further comprise the steps:
1:, calculate the real-time amplitude IA of three-phase current, IB, IC by the sample of S01 output.
2: each the bar record among the S03 is implemented the operation of following steps:
According to electric current phase line identification field, determine object IX (IA/IB/IC) to be compared;
By PLM variable numbering territory, read the current state of this segmentation electrorheological amount to PLM;
If current state=0, then: IX and setting value are compared (comparison condition is the definition of comparison condition territory): when satisfying comparison condition, the number of times that record satisfies condition, when reaching the comparison time value, then notifying PLM is 1 with the state recording of this variable; When not satisfying comparison condition, the number of times zero clearing that satisfies condition;
If if current state=1, then: with IX with return definite value relatively (comparison condition defines opposite with the comparison condition territory): when satisfying comparison condition, the number of times that record satisfies condition, when reaching the comparison time value, then notifying PLM is 0 with the state recording of this variable; When not satisfying comparison condition, the number of times zero clearing that satisfies condition.
S04 is used for input switch signal kr0 ... the collection of .kr7 state, result notification PLM upgrades in0 ... the state of in7 variable.
The 485 communication receiving/transmission devices that S05 represents are responsible for receiving and dispatching the MODBUS Frame that exchanges between PLM and 485 buses, comprise the steps:
If receive an effective MODBUS frame,
Then:
This frame is submitted the communication server of PLM;
When treating that PLM returns response frame, send this response frame to 485 bus;
Otherwise: continue to receive the data on the bus.
The relay driver that S06 represents is used for the driving to PLM output control signal Ox, makes the output relay element can be by time-delay, level, pulse, and the pattern operation of continuous impulse, wherein pattern is that user-programmable is set.
The lamp driver that S07 represents: be used for driving, make to show that output element can be by level PLM output indicator LEDx signal, pulse, the pattern operation of continuous impulse, wherein pattern is that user-programmable is set.
The establishing method of above-mentioned pattern is seen the explanation about PLM.
The PLM that above-mentioned part relates to, its formation comprises:
The PLM variable state registration form that P01 represents;
The applied logic structure table that P02 represents;
The PLM communication server that P03 represents;
The applied logic manipulater that P04 represents.
PLM offers the resource of user as control able to programme with limited naming logistics variable (being called the PLM variable), comprising:
1:INx: switching value input class variable, the logical variable that after the switching signal collector for processing, obtains;
2:IASx, IBSx, ICSx: the segmented current class variable, by the current signal of outside input, the one group of logical variable that after current signal collector and the conversion of segmented current comparer, obtains;
3:LEDx: the indicating lamps variable, by one group of logical variable that reflects the physical quantity state of PLM structure;
4:Ox: switching value output class variable, by one group of logical variable of outside things being implemented control of PLM structure;
5:RTx: one group of remote control of importing into by communications service, the logical variable of remote signalling information;
6:REGx: the register class variable, by one group of logical variable of PLM structure, its purposes is the design of convenient complicated control program.
Above-mentioned each PLM variable is seen Fig. 4 with a unique PLM number-mark, the mapping relations of PLM variable and PLM numbering.
PLM is responsible for above-mentioned variable is managed, and accepts user's programmatic access request, and realizes that the user sets the operation of application program.Wherein:
PLM variable state registration form P01 is used to write down the real-time status of above-mentioned each PLM variable;
Applied logic structure table P02 is used to store the application program of user's input, comprises following content:
The controlled PLM variable of each user (comprising: LEDx, Ox REGx) has in table and has only a record, and recorded content comprises following territory:
1:PLM variable numbering, the numbering of PLM variable to be calculated;
2: logical expression (logical condition that this PLM variable state variation is relied on) is characterized in that:
Only comprise in the logical condition formula with or, non-three kinds of operational symbols;
The computing variable is represented with the numbering of PLM variable;
Logical operation formula suffix arithmetic expression tissue, # is an end mark;
Empty logical condition formula must comprise a # end mark;
3: pattern (manner of execution of output: time-delay, level, pulse, continuous impulse);
4: delay time (for the time parameter of time-delay, pulse, continuous impulse pattern);
The mode of operation of content decision S06, the S07 in above-mentioned pattern, delay time territory;
The content of record can be upgraded by the user.
PLM communication server P03 is responsible for the user-programmable visit of device, makes the user finish programmatic access to device, the operation that may further comprise the steps on host computer by network:
Analyze effective MODBUS claim frame that communication receiving/transmission device S05 imports into;
Be current segmenting record update request, then upgrade the corresponding record of current segmenting definite value table, and tectonic response frame traffic news transceiver sends;
Be current segmenting record read request, then the corresponding recorded content traffic news of current segmenting definite value table transceiver sent;
Be applied logic expression formula update request, then upgrading applied logic structure epiphase should record, and tectonic response frame traffic news transceiver sends;
Be applied logic expression formula read request, then applied logic constructed epiphase and answer recorded content traffic news transceiver to send;
Be remote signalling, remote control variable state update request, then upgrade PLM variable state registration form respective record state, and tectonic response frame traffic news transceiver sends;
Be PLM variable state read request, then PLM variable state registration form respective record content traffic news transceiver sent.
Applied logic manipulater P04 is responsible for the operation to user application, comprises the steps:
To using each the bar record in the logical construct table, implement the operation of following step:
According to the PLM variable current state of P01 record, calculate given logical expression in the P03 record;
By the PLM variable numbering territory in the P03 record is index:
Upgrade the state that the P01 epiphase should write down with operation result;
Be the Ox variable, then operation result exported to relay driver S06 and handled;
Be the LEDx variable, then operation result exported to signal lamp driver S07 and handled.
The beat generator that S08 represents: be used to control, operation opportunity of above-mentioned each functional part synchronously, the beat of generation comprises:
1: sampling beat: be used for the operation of synchronous S01, S04;
2: compare beat: be used for the operation of synchronous S03;
3: operation beat: be used for the operation of synchronous P4.
Be not difficult to find out to possess the ability of control able to programme by the sectional type current controller of said method and step structure.
Shown in Figure 2, a kind of programmable sectional type current control device structural drawing comprises: the power module that links to each other with each module of Fig. 2; Comprise the microprocessor 101 (MCU) of interfaces such as A/D conversion, the total line traffic control of I2C on the sheet, the MCU model is the product LPC2136 of PHILIPS company; Switching value output module 104; Switching input module 103; Indicating lamp module 105; Current signal conversion, filtration module 102; 485 communication interface modules 107; EEPROM memory module 106.
Described MCU1: its A/D pin, by current signal conversion, filtration module 102, the signal wire of the controlled facility three-phase of the reflection working current of introducing with the outside links to each other; Its universal I/O port pin links to each other with switching value output module 104, switching input module 103, indicating lamp module 105; And its I2C interface pin links to each other with EEPROM memory module 106; Its general serial communication pin then is connected with communication interface module 107;
With this device and other computing machine or devices interconnect, communications protocol adopts the MODBUS agreement to above-mentioned communication interface module by 485 buses.
The signal of the reflection three-phase working current of above-mentioned access device must be the normalized current signal of 0-5A range;
Open into signal the outside that links to each other with switching input module 103, can be the switch state signal of random physical quantity;
The output of switching value output module 104 reflects with the action of relay normally open contact;
Indicating lamp module is by the state of physical quantity in the state reflection device of LED;
The EEPROM memory module is used to store the storage of user to data such as the application program of device input and segmented current definite value tables; MCU moves employed program and data then are stored among the MCU embedded FLASH and SRAM.
The method of constituent apparatus software systems:
This device adopts the mode of AC sampling, calculating root-mean-square value to the measurement of real-time current signal;
Above-mentioned processing mode needs system to produce the timeticks of one 50 cycle per second power frequency integral multiple, with the frequency of control sampling action;
It is 1.25MS that this device is selected the sampling beat, with the operation of synchronizing current signal picker;
Apparatus system will compare beat and be decided to be 5MS, with the operation of synchronous segmenting current comparator;
The beat of will operating of device is decided to be 5MS, with the operation of synchronous applications logical operator;
Device mutual by with the user obtains the demand for control of user expectation; The communications service of use device makes the user and install interactive information at host computer; The correlation process method of relevant host computer does not belong to the category that the utility model is discussed, and the utility model only provides the protocol specification of relevant access means.
The above only is preferred embodiment of the present utility model, be not in order to limit claims of the present utility model, and technological thought of the present utility model can be used in other similar system widely, therefore every not breaking away from the equivalence change of being finished under the spirit disclosed in the utility model or revising, all should be included in the scope of claims.
Claims (6)
1, a kind of programmable sectional type Current Control apparatus is characterized in that comprising:
The current signal load module is used for the three-phase simulation current signal is carried out digitized sampling, according to the sample of above-mentioned current signal collector output, calculates the amplitude of three-phase simulation electric current, relatively calculates the real-time status of a set of segmentation current signal;
The switch value input interface module is used to reflect the introducing of external physical amount status signal, interface circuit by optocoupler with the input signal isolated variable after, be connected with the input interface of MCU;
The switching value output interface module is used to realize the controller control of physical quantity to external world, and relay is connected with the output interface of MCU by this module;
Memory module is used for the storage demand that device can be adjusted Nonvolatile datas such as controlled variable, user application, segmented current definite value table;
Microprocessor MCU module according to the real-time status of above-mentioned current signal load module input signal, according to predetermined logic control scheme, is exported one group of logical signal, by the output driving element, controlled electric utility is implemented control.
2, programmable sectional type Current Control apparatus as claimed in claim 1 is characterized in that described device also comprises:
Communication interface modules links to each other with microprocessor MCU module serial communication interface, and the passage with the external network communication is provided.
3, programmable sectional type Current Control apparatus as claimed in claim 2 is characterized in that, communication interface modules inputs to microprocessor MCU module with predetermined logic control data, and the control device output logic signal is to controlled electric appliance equipment.
4, programmable sectional type Current Control apparatus as claimed in claim 1 is characterized in that, described current signal load module comprises:
The current signal collector is used for filtering and digitized sampling to the three-phase simulation current signal;
Segmented current definite value table, the definition that is used to store a set of segmentation electric current variable, this form is submitted the programmable sectional type current controller to by the user;
The segmented current status comparator, the sample according to above-mentioned current signal collector output calculates the amplitude of three-phase simulation electric current and contrasts above-mentioned segmented current definite value table, relatively calculates the real-time status of a set of segmentation current signal.
The applied logic manipulater is according to applied logic structure table, operation user application.
5, programmable sectional type Current Control apparatus as claimed in claim 1 is characterized in that, described memory module is used EEPROM, and this module links to each other with MCU by the I2 bus.
6, programmable sectional type Current Control apparatus as claimed in claim 1 is characterized in that described device also comprises:
The signal lamp Drive Module is used to connect LED light, indication physical descriptor state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201995553U CN201335994Y (en) | 2008-12-15 | 2008-12-15 | Programmable sectional-type current control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201995553U CN201335994Y (en) | 2008-12-15 | 2008-12-15 | Programmable sectional-type current control device |
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| CN201335994Y true CN201335994Y (en) | 2009-10-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361431A (en) * | 2011-10-19 | 2012-02-22 | 安徽鑫龙电器股份有限公司 | Double-speed motor controller and control method thereof |
| CN102480821A (en) * | 2010-11-22 | 2012-05-30 | 意法半导体研发(深圳)有限公司 | System for reprogramming power parameters of light emitting diodes |
| CN103428958B (en) * | 2012-05-04 | 2017-04-12 | 欧司朗有限公司 | Circuit arranged for operating at least a first and a second cascade of LEDs |
-
2008
- 2008-12-15 CN CNU2008201995553U patent/CN201335994Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102480821A (en) * | 2010-11-22 | 2012-05-30 | 意法半导体研发(深圳)有限公司 | System for reprogramming power parameters of light emitting diodes |
| CN102480821B (en) * | 2010-11-22 | 2015-04-01 | 意法半导体研发(深圳)有限公司 | System for reprogramming power parameters of light emitting diodes |
| CN102361431A (en) * | 2011-10-19 | 2012-02-22 | 安徽鑫龙电器股份有限公司 | Double-speed motor controller and control method thereof |
| CN102361431B (en) * | 2011-10-19 | 2013-10-30 | 安徽鑫龙电器股份有限公司 | Double-speed motor controller and control method thereof |
| CN103428958B (en) * | 2012-05-04 | 2017-04-12 | 欧司朗有限公司 | Circuit arranged for operating at least a first and a second cascade of LEDs |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091028 Termination date: 20141215 |
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