CN1142487C - Method of establishing embedded graphic user interface in real-time multitask operation system - Google Patents

Abstract

The present invention discloses a method for establishing embedded type graphic user interfaces in a microkernel real-time multi-task operation system. The present invention comprises the steps that a graphic user interface (GUI) is initialized, and the graphic user interface (GUI) starts an essential system timer, reads the configuration files of all the guard gaps of a transformer station and stores the configuration files in a memory area of the graphic user interface (GUI); a user logs on the microkernel real-time multi-task operation system, and the microkernel real-time multi-task operation system judges whether the user is a legal user; if the user fails, the microkernel real-time multi-task operation system allows the user to newly log on the microkernel real-time multi-task operation system or directly exit, and dynamically allocated memory is released; if the user succeeds, the microkernel real-time multi-task operation system establishes a main user interface window and opens an interface for event input to the user, and input event messages are input through the interface; relevant events are output according to the input event messages. The graphic user interfaces (GUI) established by using the method have the advantages of compact function, simple operation and visual interface and can make the user conveniently query the comprehensive information of the transformer station and assist the user to carry out necessary operation to equipment of the transformer substation.

Description

Method for Establishing Embedded Graphical User Interface in Real-time Multitasking Operating System

technical field

The invention relates to an electric power communication system, and more particularly relates to a method for establishing an embedded graphical user interface in a telecontrol and control method in substation automation.

Background technique

The integrated control system applied to substations, especially those suitable for substations with a voltage level above 110KV, usually provides a supporting graphical user interface to facilitate the use of substation personnel on duty. The multi-architecture of the common graphical user interface in the stage is on the operation platform of the substation control system, mainly including two types:

One is based on the Window'NT (Windows'2000) operating system platform, running on a PC or workstation, using object-oriented programming tools and corresponding programming environments provided by Microsoft or other companies - such as Visual C, Visual Basic, a graphical user interface developed by Delphi (an object-oriented development software package produced by Borland Corporation); the advantage of this type of product is that it runs on mainstream operating systems and has powerful development and auxiliary tools.

The other is based on the UNIX (Solaris, SCO Unix, HP-UX, etc.) operating system platform, most of which run on workstations, and adopt the user interface developed by the Motif (graphical interface of the Open Software Foundation) graphical interface software toolkit; The advantages of this type of product are high stability, strong portability, and friendly interface.

However, the common problem of the two types of products mentioned above is that the resource requirements of the hardware platform are very high, including the computing speed of the processor, the size of the memory, etc., which will lead to an increase in cost.

Contents of the invention

The purpose of the present invention is to overcome the defects in the above-mentioned prior art and provide a method for establishing an embedded graphical user interface in a microkernel real-time multitasking operating system.

The purpose of the present invention is achieved by the following technical solutions, described a method of setting up an embedded graphical user interface in a microkernel real-time multitasking operating system, comprising steps:

Initialize the graphical user interface, the graphical user interface starts the necessary system timer, reads in the configuration files of each protection interval of the substation and stores them in its memory area;

The system logs in and judges whether it is a legitimate user. If the login fails, the user is allowed to log in again, or directly exit the system, and release the dynamically allocated memory;

If the system login is successful, establish the main user interface window and open the event input interface to the user, and input the event message through the interface;

According to the input event message, the relevant event is output, and the data list window presents the corresponding data. The input event in the input event message is "data update timer time out", the event is triggered every 1 second, and the corresponding output event is Make all the data in the existing data list window be updated to the current value, so that the user can observe the latest real-time data.

The input event or "user operation" in the input event message, the user can input the request into the event processing main loop at any time through the operation of the mouse or keyboard, and the main loop generates various information according to the requirements according to the different input information. The various output events mentioned include: displaying real-time data, that is, according to the relay protection interval information selected by the user, pop-up windows by category, displaying the corresponding real-time data list; providing user equipment operation menus, that is, according to the user's selection The relay protection interval information will pop up the device remote control object selection window. Through the operation of the message queue between the database and the graphical user interface, the user can perform device remote control; display event records, that is, call out to display several recent event records. Alarm window; provide user account management function, that is, allow the current user to add a new legal user, and encrypt the added new user name and password and save it in a specific file; exit the system, that is, exit the system module and disconnect from the database core , and frees the dynamically allocated memory, closing all open windows.

The input event in the input event message or "the time of the event query timer is up", the event is triggered every 1 second, and the corresponding output event is "automatic pop-up window if there is an event", that is, the query database and the graphical user In the message queue established between the interfaces, if there are remote signal displacement events, telemetry over-limit events, protection action events, device alarm events or sequence of events (SOE) events, the event alarm window will pop up to prompt the user in time Important event; if the event alarm window has been opened, update the content of the window prompt immediately.

The advantages of the present invention are: considering the actual needs of substation control and communication, and the characteristics of QNX and its graphic development tools, CUI has simple functions, simple operation, and intuitive interface, which can provide users with convenient query of comprehensive information of substations, and can Assist users to perform necessary operations on substation equipment.

Description of drawings

The specific steps and advantages of the method of the present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a schematic software flow diagram of specific steps of the method of the present invention.

Detailed ways

Fig. 1 is a schematic software flow diagram of specific steps of the method of the present invention. As shown in Figure 1, the method of the present invention is summarized as:

Initialize the graphical user interface (CUI), the CUI starts the necessary system timers, reads in the configuration files of each protection interval of the substation and stores them in its memory area;

The system logs in and judges whether it is a legitimate user. If the login fails, the user is allowed to log in again, or directly exit the system, and release the dynamically allocated memory;

If the system login is successful, establish the main user interface window and open the event input interface to the user, and input the event message through the interface;

According to the input event message, the relevant event is output. The input event in the described input event message is "data update timer time is up", this event is triggered every 1 second (adjustable), and the corresponding output event is to make all the data in the existing data list window be updated as Current value, so that users can observe the latest real-time data;

The input event or "user operation" in the input event message, the user can input the request into the event processing main loop at any time through the operation of the mouse or keyboard, and the main loop generates various information according to the requirements according to the different input information. The various output events mentioned include: displaying real-time data, that is, according to the relay protection interval information selected by the user, pop-up windows by category, displaying the corresponding real-time data list; providing user equipment operation menus, that is, according to the user's selection The relay protection interval information will pop up the device remote control object selection window, and through the operation of the message queue between the database and the CUI, the user can perform device remote control; display event records, that is, call out the alarm window showing several recent event records; Provide user account management function, that is, allow the current user to add a new legal user, and store the added new user name and password in a specific file after encryption; exit the system, that is, the exit system module disconnects the connection with the database core and releases the Closes all open windows to remove dynamically allocated memory.

The input event in the described input event message is "event query timer time is up", the event is triggered every 1 second (adjustable), and the corresponding output event is "automatic pop-up window if there is an event", that is, the query database and In the message queue established between CUIs, if there are remote signal displacement events, telemetry over-limit events, protection action events, device alarm events or sequence of events (SOE) events, an event alarm window will pop up to prompt the user in time Important event; if the event alarm window has been opened, update the content of the window prompt immediately.

The software flow of its specific steps is: start from step S00, and step S01 is the initialization part of CUI. Due to the limited hardware resources of the embedded system, CUI does not build its own independent database, but only links to a specific core user real-time database, and reads and writes data through the user interface functions provided by the database when necessary. In the initialization part, CUI starts the necessary system timer, reads in the configuration files of each protection interval of the substation, stores them in the memory area, and fills its own simple data structure to avoid frequent file operations. Step S02 performs system login, and checks user authority. A dialog box pops up, prompting the user to log in. Step S03 judges whether the login is successful, checks the user name and password input by the user, compares the records in the password file, and judges whether the user is a legitimate user. If the check is passed, the login dialog box will be automatically closed; if the check is not passed, a login error warning box will pop up. Step S04—after the login fails, clear the last input content, and allow the user to log in again. Step S05—the user is also allowed to directly choose to log out after the login fails. Exiting the system module disconnects from the database core, frees dynamically allocated memory, and closes all open windows. Step S06—the main interface window that appears after successful login opens the event input interface to the user; event messages input through all interfaces will be sent to the event of CUI in the receiving blocking state (that is, the receiving state we often say) The main loop is processed, and the corresponding output events are generated by the main loop. This main loop is responsible for processing all screen input, keyboard input, and mouse operation events, and at the same time dispatching various interrupt programs, responsible for interface filtering, clipping, and output, and is the scheduling core of all graphical user interface software. Step S07—one of the input events is "data update timer expires", and this event is triggered every 1 second (adjustable). The corresponding output event is S14—make all the data in the existing data list window be updated to the current value, so that the user can observe the latest real-time data. Step S08—the second input event is "user operation". Users can input requests into the event processing main loop through mouse or keyboard operations at any time, and the main loop generates various output events according to the requirements according to different input information, mainly including the relay protection selected by the user in step S10. Interval information, sub-category pop-up window, display the corresponding real-time data list; provide user equipment operation menu in step S11, according to the relay protection interval information selected by the user, pop-up equipment remote control object selection window, through the message queue between the database and the CUI The operation enables the user to perform remote control of the device; in step S12, an alarm window showing several recent event records is called; step S13—provides the user account management function, allowing the current user to add a new legal user, and the added new user name and the password is encrypted and stored in a specific file; in step S05, the user is also allowed to directly choose to exit. Exiting the system module disconnects from the database core, frees dynamically allocated memory, and closes all open windows. The input event in the input event message in step S09 is "event inquiry timer time arrives", and this event is triggered every 1 second (adjustable), and the corresponding output event in step S15 is "if any event pops up automatically", That is, query the message queue established between the database and the CUI. If there are remote signal displacement events, telemetry over-limit events, protection action events, device alarm events or sequence of events records (SOE), the event alarm window will pop up for timely Prompt the user that an important event has occurred; if the event alarm window is already open, update the window immediately.

Since QNX, a real-time multitasking operating system based on microkernel technology, only needs to occupy less than 2 megabytes of storage space when it is installed in a minimized manner, and no more than 3 megabytes after adding network components. After adding necessary font files and graphical interface support, about Occupying 4.5 megabytes, it can be installed on an electronic disk or other types of small-capacity storage media. And if adopt 486 CPU (main frequency is 133MHz) and memory of 32 megabytes, just can reach the real-time requirement of substation field control and communication completely. It can be seen that the graphical user interface developed based on QNX has much lower hardware requirements than other types of products, and can be applied to embedded hardware platforms.

Photon is a graphical user interface (GUI) for QNX RTOS and QNX applications that provides a flexible and easy-to-use environment for end users and developers. In order to facilitate the development of a graphical user interface for QNX applications running under photon, photon provides a relatively convenient development tool "Photon Application Builder (PhAB--Photon graphical application development tool for short)". Using PhAB, it is relatively easy to make a friendly user interface similar to CUI.

Considering the actual needs of substation control and communication, as well as the characteristics of QNX and its graphic development tools, CUI has simple functions, simple operation, and intuitive interface, which can provide users with convenient query of comprehensive substation information, and can assist users in substation equipment Perform the necessary operations, as follows:

1. According to the user's requirements, display the real-time data of the actual status of the corresponding switch, analog and electricity

According to;

2. The user can control the controllable switches, knife switches and other equipment of the whole station through a simple mouse click operation

remote control;

3. When an event occurs in the guard interval that needs to be monitored, a message notification can be sent to the user.

4. According to the actual work needs, increase the legitimate users of the system and set the operation authority.

The foregoing description of the preferred embodiment of the invention has been presented for purposes of illustration and description. It is not exhaustive or to limit the invention to the precise form disclosed. Many modifications and variations are possible in light of the above teaching. It is intended that the scope of the invention be defined not by this detailed description but by the appended claims.

Claims (3)

1. A method for setting up an embedded graphical user interface in a microkernel real-time multitasking operating system, the method comprising steps: Initialize the graphical user interface, the graphical user interface starts the necessary system timer, reads in the configuration files of each protection interval of the substation and stores them in its memory area; The system logs in and judges whether it is a legitimate user. If the login fails, the user is allowed to log in again, or directly exit the system, and release the dynamically allocated memory; If the system login is successful, establish the main user interface window and open the event input interface to the user, and input the event message through the interface; According to the input event message, the relevant event is output, and the data list window presents the corresponding data. The input event in the input event message is that the data update timer time is up, and the event is triggered every 1 second, and the corresponding output event is to make the current All data in the data list window is updated to the current value, so that users can observe the latest real-time data. 2. The method according to claim 1, characterized in that: the input event or user operation in the input event message, the user can input the request into the event processing main loop at any time through the operation of the mouse or keyboard, and The main loop generates various output events according to the requirements according to the different input information. The various output events include: displaying real-time data, that is, according to the relay protection interval information selected by the user, pop-up windows by category to display the corresponding real-time Data list; provide the user equipment operation menu, that is, according to the relay protection interval information selected by the user, the equipment remote control object selection window will pop up, and the user can perform equipment remote control through the operation of the message queue between the database and the graphical user interface; display Event record, call out the alarm window showing several recent event records; provide user account management function, that is, allow the current system, that is, exit the system module to disconnect from the database core, release the dynamically allocated memory, and close all open window. 3. The method according to claim 1, characterized in that: the input event in the input event message or the time of the event query timer expires, the event is triggered every 1 second, and the corresponding output event is if there is an event Automatic pop-up window, that is, query the message queue established between the database and the graphical user interface. If there are remote signal displacement events, telemetry over-limit events, protection action events, device alarm events or event sequence records, event alarms will pop up window, so as to prompt the user that an important event has occurred; if the event alarm window has been opened, update the content of the window prompt immediately.

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