CN1348121A - Soft logic controller (PPC) based on embedded real-time operation system - Google Patents
Soft logic controller (PPC) based on embedded real-time operation system Download PDFInfo
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- CN1348121A CN1348121A CN 00129788 CN00129788A CN1348121A CN 1348121 A CN1348121 A CN 1348121A CN 00129788 CN00129788 CN 00129788 CN 00129788 A CN00129788 A CN 00129788A CN 1348121 A CN1348121 A CN 1348121A
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- soft logic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/18—Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
Abstract
The soft logic controller based on embedded real-time operation system consists of CPU, flash memory, EEPROM, special chip with high-level language programming interface, special ICs as bus drive for bus interface among circuit board, etc. The controller based on PC has excellent opening performance, may be fit with various industrial network protocol for connection with site bus, and has fast processing speed, strong operation function, small volume, light weight, low cost and high reliability.
Description
The present invention relates to technical field of industrial automatic control, particularly based on the soft logic controller (PPC) of PC based on embedded real-time operating system.
The various PLC technology of the many employings of industrial automation control technology at present, general PLC adopts application specific architecture, the chip multiselect mainly adopts the proprietary network protocol of oneself in the PLC network facet with single-chip microcomputer series such as MC68K or MCS51 and each producer of the world, as PROFIBVS of Siemens etc., make existing PLC technology commonly used exist with the other system intercommunity relatively poor, soft, hardware is open not enough, be difficult to and on-the-spot other the diversified design of control, instrument communication, various softwares can not be transplanted to above it and move, because chip MC68K, single-chip microcomputer series such as MCS51, this just exists arithmetic speed limited, the indifferent deficiency that waits of floating-point operation, some senior computings can not be carried out, some common softwares can not be carried out.
The objective of the invention is at above the deficiencies in the prior art, design a kind of based on PC, it is open good to have, can install various industrial network agreements additional, be convenient to be connected with fieldbus, processing speed is fast, calculation function is strong, volume is little, in light weight, cost is low, reliability is high, can load the soft logic controller based on embedded real-time operating system of various User Agreements.
Purpose of the present invention can be achieved through the following technical solutions, and based on the soft logic controller of embedded real-time operating system, this controller comprises:
The CPU that the band system hardware detects is used for mainly finishing the processing of real-time image data, the workflow management and the executive utility of system;
The FLASH ROM (flash memory) of mini miniature special-purpose BIOS is housed, is used for depositing initial configuration system;
Be used to deposit the EEPROM of embedded real-time operating system-TOS;
Band advanced language programming interface circuit can be supported the C Programming with Pascal Language, thereby the soft logic function realized in senior language such as available C;
Be used to connect each interface unit and reach the special IC of doing the bus driver effect for bus interface between plate;
The hardware watchdog circuit that carries prevents that software wanders away, and improves the functional reliability of soft logic;
Can be between the plate that PC104 directly is connected connecting bus and interface bus driving circuit thereof.Make the controller can direct plug-in PC104 module, greatly enriched systemic-function.
Fig. 1 is a theory diagram of the present invention;
Fig. 2 is the embodiments of the invention theory diagram.
The present invention is described in further detail as follows below in conjunction with accompanying drawing:
Soft logic controller based on embedded real-time operating system mainly comprises as the lower part: 1, CPU, 2, the FLASH flash memory, 3, the EEPROM program storage, 4, the higher level lanquage interface circuit, 5, the network interface special IC, 6, watchdog circuit, 7, super input and output special IC, 8, the RS232 interface, 9, the RS485 interface, 10, operational mode is selected circuit, 11, RAM, 12, display circuit, 13, the read-write logic controller, 14, Ethernet interface, 15, remote interface, 16, the higher level lanquage interface, 17, reach and the PC104 bus interface circuit between plate.
After powering on, CPU carries out hardware check, mainly detects the FLASH flash memory.From flash memory, BIOS is called in internal memory by the back and detect hardware such as RAM, EEPROM, super I/O, FLASH ROM and Ethernet interface, long-range mouth, higher level lanquage mouth.Then, from EEPROM, call in embedded real-time operating system-TOS, from EEPROM, call in embedded real-time operating system-TOS by TOS, call network communication protocol (ETHERNET-803.3), Token Ring communications protocol, higher level lanquage translation and compiling environment (BORLAND C++ compiler) or the like by TOS from EEPROM, RAM all packs into.Simultaneously, carry out the I/O module by the inter-board interface bus and detect, in RAM, distribute the I/O map list then.In addition, by super I/O, read operational mode and select signal, send specific look-at-me by super I/O again, tell CPU to carry out corresponding operational mode by CPU.
At ordinary times, power to watchdog circuit, provide real-time clock to CPU by reserve battery.During operation, reserve battery is switched by commutation circuit, with external power source to house dog and whole module for power supply.
When carrying out the network interface communication with the outside, the corresponding network communication protocol that CPU can call among the RAM is controlled the network-specific interface, and carries out data transmission by Ethernet interface.
Equally, when carrying out RS232, RS485 serial communication, super I/O controls corresponding communication interface chip, by RS232 and RS485 interface, carries out exchanges data with the outside.Its data that obtain directly send CPU to by super I/O and handle.
Enforcement of the present invention as shown in Figure 2, its detailed programs:
Title: oxygenerator (the empty branch) control system
The control function of system is finished by the soft logic controller (PPC controller) based on embedded real-time operating system.The PPC controller is mainly finished the data acquisition and the circuit controls function of product processing district, memory block.The loop of control is mainly: air compressor machine sucks the flow control of air; The liquid level control of air cooling tower, water-cooling tower; The operating procedure of two molecular sieve and switching controls; The pressure of each rectification column and pipeline, flow, temperature control in the ice chest; Liquid level in the storage tank and pressure control etc.In addition, the PPC controller is also finished startup, the logic control that stops, moving, circuit controls and the running state monitoring of large body equipment such as the interior air compressor machine of main building.Simultaneously, also by Industrial Ethernet and MMI (operator's man-machine interface) and ALC expert system swap data.
Controller generates in its program storage with the C language by the advanced language programming mouth multiple functional module at this system, as PID regulatory function piece etc.Various pid parameters can be set on MMI by the operator, after the special purpose interface chip by Ethernet and controller inside is handled and functional block connect, enter CPU and handle.Simultaneously, by the various on-site parameters that the collection of I/O module comes, also be under the control of CPU, through the special purpose interface chip, pass to MMI through Ethernet and show.And can offer upper management infosystem (MIS) by MMI.Exchanges data with the ALC expert system, be to control by the communication program of in program storage, finishing with the C language, this program has real-time multi-task operating system TOS to dispatch, thereby the system database of realizing residing in controller and the ALC expert system in the SQL carries out the dynamic data exchange.
Like this, brought into play various advantages preferably, in oxygenerator (the empty branch) control system, reached effect preferably based on the soft logic controller of embedded real-time operating system.
Claims (2)
1, based on the soft logic controller (PPC) of embedded real-time operating system, it is characterized in that described controller comprises:
The CPU that a, band system hardware detect is used for mainly finishing the processing of real-time image data, the workflow management and the executive utility of system;
B, the flash memory of mini miniature special-purpose BIOS is housed, is used for depositing initial configuration system;
C, be used to deposit the program storage of embedded real-time operating system-TOS;
D, higher level lanquage interface circuit can be supported the C Programming with Pascal Language, thereby the soft logic function realized in senior language such as available C;
E, be used to connect each interface unit and make the special IC of bus driver effect for bus interface between plate;
F, the hardware watchdog circuit that carries prevent that software wanders away, and improve the functional reliability of soft logic;
G, can be between the plate that PC104 directly is connected connecting bus and interface bus driving circuit thereof.Make the controller can direct plug-in PC104 module.
2, the soft logic controller based on embedded real-time operating system according to claim 1 is characterized in that described controller comprises:
A, be used to receive, control the PLC interface unit of field data;
B, be used to transmit the RS232 interface and the RS422/485 interface of industrial control data;
C, the RAM of self-contained battery is arranged, the automatic power cutoff protector program;
D, be used for the display of display interface and running status.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00129788 CN1348121A (en) | 2000-10-12 | 2000-10-12 | Soft logic controller (PPC) based on embedded real-time operation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00129788 CN1348121A (en) | 2000-10-12 | 2000-10-12 | Soft logic controller (PPC) based on embedded real-time operation system |
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| CN1348121A true CN1348121A (en) | 2002-05-08 |
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| CN 00129788 Pending CN1348121A (en) | 2000-10-12 | 2000-10-12 | Soft logic controller (PPC) based on embedded real-time operation system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100368943C (en) * | 2004-11-19 | 2008-02-13 | 中国科学院长春光学精密机械与物理研究所 | Embedded type general servo controller |
| CN100504754C (en) * | 2003-07-29 | 2009-06-24 | 索林集团德国有限公司 | Display and operation device for medical equipment |
| CN103760810A (en) * | 2014-01-30 | 2014-04-30 | 中国石油集团东方地球物理勘探有限责任公司 | Remote measuring terminal controller |
| CN105094021A (en) * | 2015-09-11 | 2015-11-25 | 浙江中烟工业有限责任公司 | PLC cooperative control device based on ARM embedded technology |
| CN112558541A (en) * | 2019-09-25 | 2021-03-26 | 北京东土科技股份有限公司 | PLC programming extension system and method and electronic equipment |
| CN113093622A (en) * | 2021-04-08 | 2021-07-09 | 中国人民解放军火箭军士官学校 | Interconnection formula simulation training emulation machine |
-
2000
- 2000-10-12 CN CN 00129788 patent/CN1348121A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100504754C (en) * | 2003-07-29 | 2009-06-24 | 索林集团德国有限公司 | Display and operation device for medical equipment |
| CN100368943C (en) * | 2004-11-19 | 2008-02-13 | 中国科学院长春光学精密机械与物理研究所 | Embedded type general servo controller |
| CN103760810A (en) * | 2014-01-30 | 2014-04-30 | 中国石油集团东方地球物理勘探有限责任公司 | Remote measuring terminal controller |
| CN105094021A (en) * | 2015-09-11 | 2015-11-25 | 浙江中烟工业有限责任公司 | PLC cooperative control device based on ARM embedded technology |
| CN112558541A (en) * | 2019-09-25 | 2021-03-26 | 北京东土科技股份有限公司 | PLC programming extension system and method and electronic equipment |
| CN112558541B (en) * | 2019-09-25 | 2022-04-15 | 北京东土科技股份有限公司 | PLC programming extension system and method and electronic equipment |
| CN113093622A (en) * | 2021-04-08 | 2021-07-09 | 中国人民解放军火箭军士官学校 | Interconnection formula simulation training emulation machine |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |