CN203117719U - Mobile storage unit based logic controller - Google Patents
Mobile storage unit based logic controller Download PDFInfo
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- CN203117719U CN203117719U CN 201320122698 CN201320122698U CN203117719U CN 203117719 U CN203117719 U CN 203117719U CN 201320122698 CN201320122698 CN 201320122698 CN 201320122698 U CN201320122698 U CN 201320122698U CN 203117719 U CN203117719 U CN 203117719U
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- active storage
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Abstract
The utility model discloses a mobile storage unit based logic controller. The logic controller comprises a master control unit and peripheral devices. The peripheral devices include a mobile storage unit. The mobile storage unit is in bidirectional communication with the master control unit. The master control unit reads a configuration file in the mobile storage unit and controls the other peripheral devices, and acquires control information to write into the mobile storage unit. By the logic controller, a scripting language configuration file is firstly written into a mobile storage device, and a micro control unit reads the scripting language configuration file and executes control of the peripheral devices. The mobile storage unit based logic controller has the advantages of high integration degree, compatibility to various communication protocols, extensible processing signal types, function of data acquisition and recording, long operating time span and the like.
Description
Technical field
The utility model relates to a kind of logic controller, relates in particular to a kind of logic controller based on active storage equipment, belongs to the control technology field.
Background technology
Programmable logic controller (PLC) (Programmable Logic Controller abbreviates PLC as) has obtained development and the widespread use of decades as the control core of automatic control system.Its convenient, flexible control mode has obtained general approval.At present, though the PLC product reliability on the market and stability are higher, its programming mode often difficulty is bigger, to program burn writing require too highly, price is also comparatively high.Be in particular in the following aspects:
At first be that programming language is had relatively high expectations.Because the real-time of programmable logic controller (PLC) is had relatively high expectations, and programming language is had more stiff requirement.Its programming language is required to be one of following five kinds of standardization programming languages: order functional diagram (SFC), ladder diagram (LD), three kinds of graphical language of functional block diagram (FBD) and statement list (IL), two kinds of text languages of structure text (ST).The programming language of selecting for use should be observed the IEC6113123 standard.Because above-mentioned defective, making programmable logic controller (PLC) require in real-time is not that too high occasion (as Smart Home etc.) can not be widely used.
Next is to need complicated professional support equipment just can finish the program burn writing of programmable logic controller (PLC), and its programming cost is higher, causes expensive.
Be function singleness again, extensibility is not strong.In communication aspects, programmable logic controller (PLC) is not supported these powerful communication protocols such as WIFI, TCP/IP mostly.Even the minority programmable logic controller (PLC) is supported TCP/IP, its price also is very expensive, and use must be according to very professional operative knowledge; Aspect timing, the time span of traditional programmable logic controller (PLC) program timing is little, and generally only can support the timing of repetitive event.And traditional time switch that possesses timing function does not possess programmable functions, enforcement measure (Chang Kai still gets out of the way etc.) that can't customized event, and execution number of times that can't customized event can't carry out corresponding logic judgement etc.
At last, traditional programmable logic controller (PLC) also lacks the data acquiring and recording function, can not provide the more needed data of user for it with reference to use, for example running log, operation or control parameter etc.
In view of above-mentioned deficiency, some companies improve existing programmable logic controller (PLC).For example application number is in 201110173587.2 the Chinese patent application file, to provide a kind of Programmable Logic Controller, and it constitutes and be provided for the structure of reading script data and script is resolved and carried out from exterior storage medium in Programmable Logic Controller.Programmable Logic Controller 10 comprises following part and constitutes: exterior storage medium interface 32, and it is used for removably installing exterior storage medium 20; Exterior storage medium driver 33 when it has externally installed the exterior storage medium 20 that stores script data 40 on the storage medium interface 32, reads in script data 40, wherein, records script 41,42 in this script data; Script analysis unit 34, its script 41,42 to record in the script data 40 is resolved; And script execution portion 35, it carries out script according to the result who parses.But this solution integration degree is not high, and the loaded down with trivial details inefficiency of control procedure is difficult to satisfy current user's request.
Summary of the invention
At the deficiencies in the prior art, technical problem to be solved in the utility model is to provide a kind of logic controller based on script in the active storage equipment.The integrated level height of this logic controller makes things convenient for the user to programme and controls.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
A kind of logic controller based on active storage equipment comprises main control unit and peripherals, and described peripherals also comprises: the active storage unit;
Described active storage unit and described main control unit two-way communication;
Described main control unit reads the configuration file in the described active storage unit and controls other peripherals; Described main control unit is gathered control information and is write described active storage unit.
Wherein more preferably, described active storage unit comprises active storage equipment and the active storage equipment interface corresponding with described active storage equipment; Described active storage equipment interface is connected with described main control unit.
Wherein more preferably, described active storage equipment is any one in storage card, FLASH storage chip, USB flash disk, disk cartridge, the multimedia memory card.
Wherein more preferably, described peripherals also comprises time control unit;
Described time control unit is the real-time clock control module;
Described main control unit reads and carries out configuration file in the described active storage unit by the time of described real-time clock control module.
Wherein more preferably, described main control unit is microcontroller;
Described microcontroller also comprises microcontroller kernel script sentence storer and connected little processing arithmetic element, and the microprocessor arithmetic element is by bus and other peripherals transmission data.
Wherein more preferably, also has the data buffering pond in the described main control unit;
Described data buffering pond is used for preserving the data that will send or receive.
Wherein more preferably, described peripherals also comprises communication unit;
Described communication unit comprises communication module and corresponding with it communication interface;
Described communication unit and described main control unit two-way communication;
Described communication unit is used for and other equipment carry out data communication.
Wherein more preferably, described communication module is the USART communication module.
Wherein more preferably, described peripherals also comprises logic control element;
Described logic control element comprises: logic input and output driver module and control executive's interface;
Described logic input and output driver module and described main control unit two-way communication.
The logic controller based on active storage equipment that the utility model provides is write program as the script sentence file and is put into the active storage device interior, and microcontroller reads the script configuration file and carries out control peripherals.Make programming mode become simpler and easy on the one hand, because script is general more understandable easily to be write, avoided the complicacy of professional programming language on the other hand.The utlity model has the integrated level height, support various communications protocols, processing signals type can expand, have advantages such as data acquiring and recording function, working time span are wide.
Description of drawings
Fig. 1 is in the prior art, the structural representation of programmable logic controller (PLC);
Fig. 2 is the structural representation based on the logic controller of active storage equipment;
Fig. 3 is in this logic controller, the structural representation of centralized control unit.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As shown in Figure 2, the utility model provides a kind of logic controller based on active storage equipment (hereinafter to be referred as logic controller), and this logic controller comprises: main control unit 5 and a plurality of peripherals.A plurality of peripherals are connected with main control unit 5 respectively.Main control unit 5 preferred microcontrollers (Micro Control Unit is abbreviated as MCU).Other peripherals can need to arrange by the user, mainly comprise: active storage unit, communication unit, time control unit and logic control element.In an embodiment of the present utility model, microcontroller carries out two-way communication with active storage unit, communication unit, time control unit, logic control element respectively.Microcontroller reads the configuration file in the active storage unit and controls other peripherals, and microcontroller is gathered control information and write the active storage unit.Main control unit 5 according to the time of time control unit read with the executed activity storage unit in configuration file.Certainly can understand, peripherals of the present utility model is not limited only to this, peripherals with other functions also can be connected with microcontroller, for example display module, pulse width modulation module, simulation multiplexing module, A/D modular converter, human-machine interface module, print module etc.
In an embodiment of the present utility model, the active storage unit comprises: active storage equipment (also claiming movable storage device) 1 and corresponding active storage equipment interface 2 with it.Active storage equipment 1 is used for depositing configuration file and the needed record data of user of user's design.These configuration files can be the script configuration files of user program.In initialization procedure, from this active storage equipment 1, read the script configuration file of user program, and judge one by one and carry out, the script configuration file of this user program is finally resolved by microcontroller, and drives related hardware work according to analysis result.The needed record data of user can be the controller running logs, can be the data of some peripherals (for example, communication data, magnitudes of voltage of peripherals etc.), microcontroller remembers that with the daily record of the utility model operation complete record uses for customer analysis to this active storage equipment 1.In an embodiment of the present utility model, active storage equipment 1 is preferably storage card.Certainly can understand, this active storage equipment 1 is not limited only to this, also can adopt other memory devices for example FLASH storage chip, USB flash disk, disk cartridge, multimedia memory card etc.In an embodiment of the present utility model, the physics of active storage equipment interface 2 shows as chip pin, interface slot and corresponding connecting line.During actual data communication, required underlying protocol when active storage equipment interface 2 provides microcontroller access activity memory device 1.Microcontroller is supported wherein a kind of agreement, for example SPI(Serial Peripheral Interface (SPI) usually at least), SDIO(secure digital input-output card) etc.
Owing to write driver and the corresponding file system of active storage equipment 1 in the microcontroller, so microcontroller also possesses file management facilities.When the user uses script sentence in the active storage equipment 1 to carry out and records certain numerical value to specified file, microcontroller calls driver and the file system of the active storage equipment 1 of bottom, the data that the user need be recorded write the file of appointment, so the utility model can be gathered and record data.
In an embodiment of the present utility model, time control unit preferably adopts RTC(Real-Time Clock, real-time clock) control module 8.This RTC control module 8 is used for the computing current time.In the utility model, the current time amount is as an important reference amount of Run Script statement, adopt RTC control module 8 users can easily control the script configuration file of big time span operation by the different timing node of definition, reach the purpose that different time moves different script configuration files.RTC control module 8 is as the material time control reference of logic controller, main control unit 5 can be according to the script configuration file of user program in the active storage equipment 1, according to the timing node class script sentence in the configuration file, determine reading and the execution time of concrete script sentence section by this.Hereinafter in the time triggering method, it is described in detail.
In an embodiment of the present utility model, microcontroller is mainly used in communicating by letter between active storage unit, time control unit, the communication unit as the core component of logic controller, and the control source that finally drives as the logic input and output.As shown in Figure 3, microcontroller comprises microcontroller kernel program storer (inner FLASH and RAM) and connected little processing arithmetic element (ALU), and the microprocessor arithmetic element is by bus and other peripherals transmission data.Microcontroller when work, read the script configuration file that the user writes in the active storage equipment 1, and the script configuration file analysis of user in the active storage equipment 1 being write by program stored in the microcontroller kernel program storer.Microcontroller is directly resolved script, need not other any script translation tool.Microcontroller is foundation with the analysis result of script, directly by bus to all peripheral unit control.The utility model is compared with prior art, and having saved controller deciphering script needs script analytical tool and script to carry out this process of instrument, has improved integrated level.The firmware of microcontroller is equivalent to an embedded OS, and this embedded OS self is integrated microcontroller is to the driver of various peripherals (for example storage card read-write control module, real-time clock RTC control module 8, logic IO interface and human-machine interface module etc.).Under the different situation of logic controller peripherals configuration, can be by microcontroller in design interrelated logic controller in the variation of bsp driver of programming in advance reach the purpose that drives the work of various difference in functionality module.
In an embodiment of the present utility model, communication unit comprises: communication module 4 and corresponding with it communication interface 3.Communication module 4 preferred USART(universal synchronous/asynchronous serial receives/sends) communication module, be used for carrying out data communication with other equipment, it is by microcontroller driving work.Certainly can understand, this communication module 4 is not limited only to this, and other have the wired or wireless communication module of data communication function, and for example WIFI module, gsm module, CDMA module, ethernet module etc. also can be realized function of the present utility model.In the utility model, communication module 4 can be selected according to user's actual need, and can support more, more powerful communication protocol as far as possible.The physics of communication interface 3 show as chip corresponding pin, connecting line and with 4 pairs of corresponding interface slots of communication module.Certainly can understand, the structure of logic controller is not limited in this in the utility model.Along with the type selecting difference of microcontroller, this microcontroller integrated RTC control module 8 of possibility and communication module 4, or also may include other dissimilar peripherals.
In an embodiment of the present utility model, logic control element comprises: logic input and output driver module 6 and control executive's interface 7.Wherein, logic input and output driver module 6 amplifies the control signal of microcontroller on the one hand, drives other peripherals work; On the other hand external input signal is carried out pre-service, to microcontroller transmission security external signal clearly.Control executive's interface 7 is used for the output signal of logic input and output driver module 6 is exported to the outside, also the signal that peripherals need be sampled can be passed to logic input and output driver module 6.
In an embodiment of the present utility model, when the user uses script sentence calling communication module 4 to receive data from the outside, might there be the asynchronous problem of communication.Namely when execution received the script sentence of data from communication module 4, other equipment might not send data to this logic controller at the same time.For solving the asynchronous problem of above-mentioned communication, also be provided with Buffer Pool in the microcontroller.This Buffer Pool is the data that will to send or receive in order to preserve, and improves communication efficiency and a kind of technical scheme of adopting.Just do not need to enable the Buffer Pool in microcontroller if itself have Buffer Pool in the communication module 4; If communication module 4 is real-time Transmission, and itself can not preserve the data that will send or receive, must need enable the Buffer Pool in microcontroller.In the utility model, under the different situation of peripherals configuration, need in advance the bsp driver programming of peripherals to be advanced in the microcontroller.Drive various peripheral apparatus operations according to the script configuration file of resolving the user program in the active storage equipment 1.The user can use the directly corresponding peripheral apparatus operation of control of simple script sentence.For example, if peripherals includes AD conversion (analog to digital conversion) module, need to write the AD conversion driver so and microcontroller is advanced in programming.Microcontroller reads the AD conversion script configuration file that the user designs in the active storage equipment 1, the analysis of control analog voltage signal.Should be appreciated that the utility model by reading script configuration files different in the mobile active storage equipment, can handle multiple signal, for example realize frequency signal analysis, frequency signal generation, pwm signal generation etc.Therefore, the utility model obviously has stronger extensibility in terms of existing technologies.
The course of work based on the logic controller of active storage equipment that the utility model provides is such: the driver of microcontroller loading activity memory device 1, read the script configuration file in the active storage equipment 1 and resolve; Microcontroller drove communication module 4 work according to the bsp driver of analysis result and programming in advance after parsing was finished, and carried out the transmitting-receiving of data; Microcontroller passes through the output of logic control element control signal and the input of external signal according to analysis result simultaneously.During microprocessor work, the current time amount that time control unit is provided is as a reference quantity of Run Script statement.When the user used script sentence calling communication module 4 to send data to the outside, microcontroller served as " translation " (after namely user's script sentence being resolved, the communication module driver that calls bottom carries out transmission information).Because the communication module driver is taken over by the firmware in the microcontroller, when a certain moment external unit sends data to this logic controller, the statement of received communication module data whether in user's script sentence of this logic controller operation no matter, microcontroller all can pass through communication interruption service program received communication module data, and a data that receive is stored in the specific array, this array of preserving the communications reception data is exactly Buffer Pool, when the user used script to receive data from communication module 4, the practical operation of microcontroller was to read the up-to-date communication data that receives for the analysis of user's script sentence in Buffer Pool.
The various instructions of in the hypothesis microcontroller script being resolved have designed and have finished below, are example with one section user's scripted code, and the time trigger process in the utility model is described in detail.
Suppose the script sentence example:
1 2013-02-18 17:26:20/
2 PA0=0:PA1=1;
3 PA0=1:PA1=0:PA2=1;
4 BACK 2;
5 2013-02-18 17:26:30/
6 WRI"new.TXT"analogP1;
7 SEND"finished!";
8 17:30:00/
9 PA1=1:PA2=0;
10 2013-02-19 18:20:00/
When above script sentence is resolved, the 1st, 5,8,10... is about to the resolved timing node that is, microcontroller is opened this script file and it is traveled through to obtain the position of first timing node in script sentence after initialization.Then according to first this section of timing node position initialization script sentence size of code in the script.If first timing node is capable at the n of script sentence, then this section of initialization script sentence size of code and script position pointer value JC are n.Follow microcontroller and determine whether and will carry out the script sentence of shell script pointed by calling the condition judgment method by the magnitude relationship of judging shell script pointer value PC and this section script sentence size of code, and the relation of the time quantum of cycle criterion current time amount and next timing node.In above script sentence example, because first timing node is in the first trip of script sentence, so can being assigned, this section script sentence size of code and script position pointer value JC think in the 0(kernel script handling procedure that the line number of script is since 0), and shell script pointer value PC is assigned 0 after the systematic parameter initialization, because shell script pointer value PC is not less than this section script sentence size of code, so microcontroller can directly obtain the current time amount and compare with the time quantum of the timing node of script position pointed from the RTC real-time clock module, if the current time, amount was less than the time quantum in the timing node, then microcontroller reaches the wait effect by the relation of the time quantum in circulation contrast current time amount and the timing node, otherwise microcontroller can be sought at next timing node and with the comparison with it of current time amount, until find current time amount to equate with the timing node time quantum or less than timing node in the timing node of time quantum, and determine the script sentence that needs move.
In sum, the logic controller that adopts the utility model to provide, the download debugging acid that does not need specialty, the user only need be according to fixing script form, write script sentence as the script sentence file and write in the active storage equipment 1, so microcontroller reads script configuration file and the execution that the user writes in active storage equipment 1.The utlity model has the integrated level height, support various communications protocols, processing signals type can expand, have advantages such as data acquiring and recording function, working time span are wide.Adopt the utility model, make programming mode become simpler and easy on the one hand; Easily write owing to script is general more understandable on the other hand, avoided the complicacy of professional programming language.
The logic controller based on active storage equipment that the utility model is proposed has been described in detail above.For the technician in general field, any apparent change of under the prerequisite that does not deviate from the utility model connotation it being done all will constitute to the utility model infringement of patent right, with corresponding legal responsibilities.
Claims (9)
1. the logic controller based on active storage equipment comprises main control unit and peripherals, it is characterized in that described peripherals also comprises the active storage unit;
Described active storage unit and described main control unit two-way communication;
Described main control unit reads the configuration file in the described active storage unit and controls other peripherals; Described main control unit is gathered control information and is write described active storage unit.
2. the logic controller based on active storage equipment as claimed in claim 1 is characterized in that:
Described active storage unit comprises active storage equipment and the active storage equipment interface corresponding with described active storage equipment; Described active storage equipment interface is connected with described main control unit.
3. the logic controller based on active storage equipment as claimed in claim 2 is characterized in that described active storage equipment is any one in storage card, FLASH storage chip, USB flash disk, disk cartridge, the multimedia memory card.
4. the logic controller based on active storage equipment as claimed in claim 1 is characterized in that described peripherals also comprises time control unit;
Described time control unit is the real-time clock control module;
Described main control unit reads and carries out configuration file in the described active storage unit by the time of described real-time clock control module.
5. the logic controller based on active storage equipment as claimed in claim 1 is characterized in that described main control unit is microcontroller;
Described microcontroller also comprises microcontroller kernel script sentence storer and connected little processing arithmetic element, and the microprocessor arithmetic element is by bus and other peripherals transmission data.
6. the logic controller based on active storage equipment as claimed in claim 1 is characterized in that also having the data buffering pond in the described main control unit;
Described data buffering pond is used for preserving the data that will send or receive.
7. the logic controller based on active storage equipment as claimed in claim 1 is characterized in that described peripherals also comprises communication unit;
Described communication unit comprises communication module and corresponding with it communication interface;
Described communication unit and described main control unit two-way communication;
Described communication unit is used for and other equipment carry out data communication.
8. the logic controller based on active storage equipment as claimed in claim 7 is characterized in that described communication module is the USART communication module.
9. the logic controller based on active storage equipment as claimed in claim 1 is characterized in that described peripherals also comprises logic control element;
Described logic control element comprises: logic input and output driver module and control executive's interface;
Described logic input and output driver module and described main control unit two-way communication.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320122698 CN203117719U (en) | 2013-03-18 | 2013-03-18 | Mobile storage unit based logic controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320122698 CN203117719U (en) | 2013-03-18 | 2013-03-18 | Mobile storage unit based logic controller |
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| CN203117719U true CN203117719U (en) | 2013-08-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197590A (en) * | 2013-03-18 | 2013-07-10 | 张二浩 | Logic controller based on movable storage device and control method thereof |
| CN106170375A (en) * | 2014-04-08 | 2016-11-30 | 川崎重工业株式会社 | Data gathering system and method |
-
2013
- 2013-03-18 CN CN 201320122698 patent/CN203117719U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197590A (en) * | 2013-03-18 | 2013-07-10 | 张二浩 | Logic controller based on movable storage device and control method thereof |
| CN103197590B (en) * | 2013-03-18 | 2015-06-10 | 张二浩 | Logic controller based on movable storage device and control method thereof |
| CN106170375A (en) * | 2014-04-08 | 2016-11-30 | 川崎重工业株式会社 | Data gathering system and method |
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Effective date of registration: 20160303 Address after: 550005, 1, Fuyuan North Road, Nanming District, Guizhou, Guiyang 1, 1 Patentee after: Guizhou Eurasia Electronic Technology Co., Ltd. Address before: 550000 No. 15 Fuyuan North Road, Nanming District, Guizhou, Guiyang Patentee before: Zhang Erhao |
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Granted publication date: 20130807 Termination date: 20190318 |