91 results about "Process control block" patented technology

An apparatus is adapted to be used to create software and programming instructions for a distributed process control system having a user workstation remotely located from a distributed controller that controls one or more field devices using control modules. The apparatus includes a computer having a memory and a processing unit as well as a configuration application and a controller application stored on the computer memory to be executed on the processor. The configuration application is further capable of being executed on the user workstation of the distributed process control system to create the control modules for execution by the distributed controller while the controller application is adapted to be executed on the distributed controller to implement one of the control modules during operation of the distributed process control system. In this system, the configuration application, when run on the computer, creates a first control module capable of being used by the distributed controller within the distributed process control system and the controller application causes execution of the first control module within the computer to thereby simulate operation of the distributed process control system. The use of this system enables the simulation and testing of distributed process control system software and control modules without the use of the hardware, e.g., the distributed process controller and field devices, which will ultimately run that software.

An analysis of a communication configuration in a process control (PC) or substation automation (SA) system is disclosed, wherein network messages, and/or respective message sources, configured for transmission across a communication network of the system can be evaluated. From a logical data flow description that is part of a standardized configuration representation of the PC or SA system and which includes, in the form of control blocks, formal information for every message, receiver intelligent electronic devices (IEDs) can be retrieved or determined. For each retrieved receiver IED, the totality of all network messages destined for or directed to this particular receiver IED can be evaluated or processed (e.g. in view of a subsequent network load analysis, virtual local area network assignment, or graphical display of the data flow). Exemplary network messages of interest include cyclic point-to-point reports, periodic or repeated real-time multicast messages (Sampled Values SV) and event-based multicast messages (generic object oriented substation events GOOSE).

This invention discloses one network address conversion method to realize conversion between public and private network addresses by use of process control block, wherein, the method comprises the following steps: converting the private address into public address; converting the private address into public address and establishing control block in the house network gate and modifying the data frame terminal number and source IP address and sending the data frame to the public network; modifying the data frame aim IP address and aim terminal number according to the process control block information.

A process control system performing control of an industrial process implemented in a plant, may include: a network provided in the plant; a plurality of field devices connected to the network, each of the plurality of field devices is configured to perform at least one of measurement and actuation required for control of the industrial process; and a controller, connected to the network, having a virtual part configured to operate in hardware in place of hardware, and a control unit configured to operate in the virtual part and to control operations of the field devices via the network, the controller being configured to enable replacement of hardware without changing the control unit.

A system and method for integrating a production line process control system (PCS) with production line machine controllers to record data about processes completed on a production line. The PCS receives data from line controllers regarding processes that are completed on each part. Process data including process order data is stored by the PCS and used to instruct line controllers on whether a particular part should be accepted for machining or handled in another way. Rejected parts are flagged electronically so when they arrive at a subsequent line controller, they are directed to a chute containing parts removed from the production process. The PCS and line controllers exchange data about each part and applicable processes as it proceeds through production. The PCS records the data to develop a complete part history. The PCS integrates with a plant quality and tracking system that records the historical data.

The invention relates to an experimental system and a method of ore grinding process control, and belongs to the technical field of automatic control. The system comprises an operation optimization control device, a process loop control device, and a three-dimensional virtual ore grinding process operation device, wherein the three-dimensional virtual ore grinding process operation device comprises a virtual object operation device and a three-dimensional visualization operation device, new software and hardware technologies and simulation technologies are used on the process loop control device to enable the process loop control device in development and the three-dimensional virtual ore grinding process operation device to be as close as possible to a real industrial environment, and the process loop control device has good visuality and compatibility. The system further integrates the operation optimization control device, so that the problems that in the real industrial process, the loop set value is depended on human experience, arbitrariness is high, and decisions are unreasonable are solved. Therefore, the experimental system and the method of the ore grinding process control are good in versatility, strong in compatibility, and have three-dimensional visual effects. The experimental system and the method of the ore grinding process control are free from the restriction of a hardware device. The dynamic substitution between the optical control algorithm and the device model algorithm can be achieved, and the openness is good.

Disclosed herein is a semiconductor memory device, including: a memory array section wherein a memory array which requires a refresh operation is formed; an interface section configured to carry out an interfacing process between an external apparatus and the memory array section; and a refresh control block for controlling the refresh operation; the interface section configured to include a plurality of interface modules individually corresponding to a plurality of memory types and selectively applied to the interfacing process between the external apparatus and the memory array section; the refresh control block having a function of issuing a refresh command within a refresh cycle and another function of preventing, if, upon issuance of the refresh command, an access command and the refresh command to the memory array are estimated to collide with each other, the collision.

The present invention discloses a soft PLC technology-based wireless sensor network control terminal. The soft PLC technology-based wireless sensor network control terminal comprises an embedded controller which adopts an embedded system, an I / O module which is used for acquiring input information data and output processing-post information data of a detection area, and a soft PLC system, wherein the soft PLC system includes a soft PLC development system and a soft PLC operating system, wherein the soft PLC operating system includes a soft PLC operating program and a real-time operating kernel, wherein the real-time operating kernel is arranged in the embedded controller, the soft PLC operating program is used for the realizing various kinds of logic control and process control of a wireless sensor network. The soft PLC technology-based wireless sensor network control terminal of the invention can improve the applicability and scalability of a sensor network control system; the visual operation platform of the soft PLC technology-based wireless sensor network control terminal can satisfy requirements of use of different systems; the soft PLC technology-based wireless sensor network control terminal can increase the portability of the system and can assist in avoiding a complex process of a traditional PLC application process programming and simplifying operation.

The invention discloses a process control system and a process control method based on neural network predictive control, comprising a physical controlled object, a DCS (distributed control system), an industrial control computer, a switch, a GPRS (general packet radio service) wireless communication module and a handheld client device. The physical controlled object is controlled by the DCS; the switch is connected with the DCS; the industrial control computer and the GPRS wireless communication module are connected with the switch; the handheld client device carries out wireless network communication through the GPRS wireless communication module, synchronizes with the industrial control computer and realizes remote and field monitoring. According to the process control method provided by the invention, the model prediction in predictive control is realized through a BP (back propagation) neutral network, the controller optimization in the predictive control is realized through an RBF (radial basis function) neutral network, and for a process control system with constraint conditions, the constraint conditions are taken into consideration as part of rolling optimization. In application, the process control system and the process control method based on the neural network predictive control has the following advantages: the response speed is high, the tracing performance is good, the robustness is good, and the anti-interference is strong.

The invention discloses a communication method for implementing multi-process control through a single hardware serial port, which comprises the steps that: as much as 16 virtual serial port channels are provided on the single hardware serial port, a transmitting party transmits an application data packet to a receiving party on a multi-process control protocol layer according to the generation mode of the data packet, the receiving party unpacks and analyzes the data packet on the peer-to-peer multi-process control protocol layer. The method has the advantages that: multi-process control is offered to application by utilizing one essential hardware serial port, thereby saving the pin of hardware chip which increasingly becomes valuable in product design and being favorable for chip minimization; only 4 bytes are used as the control bytes for the data packet, which greatly improves the transmission speed and efficiency of data on the hardware serial port; and the data packet adopts the simple and effective generation mode which only takes up quite less memory and calculation resource, so the communication method is particularly suitable for high-speed data transmission and portable electronic products.

The method includes steps: setting up access control list (ACL) for files needed to protect; arranging access control item with attribute being as 'having executed' for each program needed to guard against in ACL; specific access right is prescribed in ACE, and ID of access is setup as program file name needed to guard against; when a process requests to access a file, operation system checks through each access control item of ACL of the file in sequence. For access control item with attribute being as 'having executed', operation system determines whether current process is executing ACE specified programs by looking at program names provided by 'process control block' in current process. Advantages are: ACL mechanism investigates behavior history of user in order to prevent baleful users from accessing target file inadequately through network so as to raise safety of operation system.

Techniques for controlling the operation of a process plant or several process plants within a process control system using a centralized or distributed controller farm allow for increased flexibility in the process control system. Any of the controllers in the controller farm may be utilized to execute modules corresponding to any of the field devices in one or several process plants. Control modules or other operations may be allocated amongst the controllers distributing the load so that one controller is not performing several operations while others are inactive. Additionally, the controller farm may be located in a temperature controlled room or area in an offsite location from the process plants. In some scenarios, load balancing techniques are performed to distribute the load for the modules equally or at least similarly amongst the controllers.

A data sharing system is disclosed together with a transmitting terminal apparatus and a receiving terminal apparatus interconnected and controlled so as to effect efficient data transfers and concomitant interlocking processes therebetween in keeping with network communication status. The transmitting terminal apparatus illustratively includes a transfer rate setting block for setting a transfer rate based on how fast display screen data were transferred previously to the receiving terminal apparatus, a communication performance measuring block for measuring communication performance parameters representative of network communication performance between the transmitting terminal apparatus and the receiving terminal apparatus, an evaluating block for calculating evaluation parameters for evaluating the network communication status using at least the transfer rate and the communication performance parameters, and an interlocking process controlling block for controlling an interlocking process between the transmitting terminal apparatus and the receiving terminal apparatus by use of the evaluation parameters.

A baby shoe comprises a sole, an upper, a light-emitting device, a sound production device and a body weight measuring device. The light-emitting device comprises a diode, a power supply and a switch, the diode is arranged in the sole corresponding to toes, the tail end of the switch extends out of the sole, and the diode is respectively electrically connected with the power supply and the switch. The sound production device comprises an intelligent voice chip, the power supply and a switch, wherein the intelligent voice chip is arranged in the sole corresponding to a foot arch, the tail end of the switch extends out of the sole, and the intelligent voice chip is respectively electrically connected with the power supply and the switch. The body weight measuring device comprises the power supply, weighing sensors, a process control block and a display window, wherein the weighing sensors are respectively arranged at the bottom of the sole corresponding to a foot sole and a heel, the display window is arranged on the upper, the process control block is arranged in the middle of the sole, and the weighing sensors are respectively electrically connected with the power supply, the process control block and the display window. The light-emitting device, the sound production device and the body weight measuring device share the same power supply. The shoe can emit light, produce music and measure the body weight, and is rich in function, practical, convenient, compact in structure and light in weight.

The invention provides a cold strip steel leveling unit process control method. The method comprises the steps that the VB6.0 version programme is adopted, and a server and a client side are of a C/S structure; the communication method of a process control system and a basic automation PLC, a message processing method, a message structure and message content are established, the functions and the solution of functional modules of the process control system and the function achieving technical condition of the process control system are established, and therefore an operator can conveniently manage a steel coil plan, set values, technological parameters, finished product data, downtime and a team and group through a customized HMI; various accurate data are provided for an ERP system. The whole process control system is clear in functional partitioning, capable of being transplanted and popularized conveniently and suitable for the process control of a cold rolled leveling unit.

The invention discloses an overall structure of a thermal automation system of a thermal power plant, composed of four parts as follows: measurement communication, protection, process control and supervision optimization, wherein the measurement communication consists of a field sensor, a transmitter, an actuator, and a communication network; the communication network includes protection, control,supervision, and a common bus; the protection includes equipment protection and protection management; the process control includes a two-level mode consisting of a function coordination level and adrive execution level; the function coordination level includes performing start-stop and non-start-stop control, accepting an optimized instruction set, an external instruction set, a direct feed-forward instruction set, a real-time measurement data set, and an internal state instruction set as input signals, and establishing a parallel control system that simultaneously faces the entire power generation production process; and the supervision optimization realizes the online monitoring for the integrated data platform and thermal process optimization and equipment in the operational controlzone. The overall structure of a thermal automation system of a thermal power plant respectively provides an implementation manner of a capital construction and a production plant, which provides a reference for the construction of a smart power plant.

A process control system coordinates with an associated asset management system to implement a plant safety mechanism and, in particular, to prevent unintended changes to, or otherwise undesired operation of, one or more process control equipment resources in a process plant. A maintenance technician uses the asset management system to request access to one or more of the process control equipment resources. A process operator receives the request via the process control system and grants or denies the request. Process control equipment resources for which a process operator grants a request are inoperable, in part or in whole, by the process control system. Upon completion of the maintenance task, the maintenance technician requests to return control of the process control equipment resource to the process operator. The return is complete when the process operator acknowledges the return of the resource to the process control system.

The invention discloses a process guidance system for industrial process control. The system comprises a process guidance module, a data acquisition and monitoring control system, a process analysis module and an interface drive module, wherein the process guidance module is used for performing action decomposition and attribute configuration on a controlled element, and performing simple imaging and drag operation on the process of a user to generate intelligent guidance data that can be recognized by the system; the data acquisition and monitoring control system is used for monitoring the running state of the process control system and adjusting parameters; the process analysis module is used for analyzing the data generated by the process guidance module via a controller, and implementing process control on the user process; and the interface drive module is used for driving peripheral interface equipment according to the analysis result of the process analysis module. The system does not need to concern the specific detail and network topology structure of the controlled element, the user process control program is completely replaced by intelligent data via data drive thought, the controller user process program is free from being compiled, and the process control of the user becomes simple, transparent, direct and flexible.

A data pipeline is used as a fundamental processing element for implementing techniques that automatically or autonomously perform signal processing-based learning in a process plant or monitoring system. Each data pipeline includes a set of communicatively interconnected data processing blocks that perform processing on one or more sources of data in a predetermined order to, for example, clean the data, filter the data, select data for further processing, perform supervised or unsupervised learning on the data, etc. The individual processing blocks or modules within a data pipeline may be stored and executed at different devices in a plant network to perform distributed data processing. Moreover, each data pipeline can be integrated into one or more higher level analytic modules that perform higher level analytics, such as quality prediction, fault detection, etc. on the processed data. The use of data pipelines within a plant network enables data collected within a plant control or monitoring system to be processed automatically and used in various higher level analytic modules within the plant during ongoing operation of the plant.