CN105425618A - Implementation method of software framework applicable to primary mirror control system with active support technology - Google Patents

Abstract

The invention provides a method for realizing the software frame applicable to the master mirror control system with active support technology. The software frame adopts a three-layer software structure of a message-response layer, a device object layer, and a basic function layer, and realizes threads and Algorithms, algorithms and interfaces are separated, and the state machine principle is introduced in the message-response layer to realize the message switching process based on the state machine. The present invention also establishes an abnormal database of the main mirror system according to the faults that may occur during the operation of the main mirror, and takes corresponding software protection measures to ensure the safety of the main mirror when an abnormality occurs. The three-layer software structure proposed by the present invention realizes layered modularization of software with low coupling degree on the basis of ensuring the safety of the main mirror, improves the reuse rate of software modules, and is easy to expand and upgrade the system.

Description

Implementation method of a software framework suitable for primary mirror control system with active support technology

technical field

The invention relates to the technical field of primary mirror control in large-diameter telescopes, in particular to a method for realizing a software framework of a primary mirror control system with active support technology in large-diameter telescopes.

Background technique

Traditional telescopes have a remarkable feature: once the system is processed and assembled. The optical structure of the entire system can hardly be changed, so traditional telescopes are also called passive telescopes. Once such a telescope mirror is deformed, the entire system cannot work accurately.

With the development of large-aperture telescopes, a main mirror control system with active support technology has been produced. The principle is: through real-time detection of the mirror surface of the telescope, the deformation of the mirror surface can be obtained, and real-time corrections can be made at the same time, so that the telescope can maintain a high Quality of image quality.

Compared with the ordinary control system, the main mirror control system with active support technology has the following differences: 1. It has different system requirements when it is in the debugging state, calibration state, and normal operation state; 2. It involves many The control and integration of a single motor and multiple temperature-controlled fans; 3. In the later maintenance and expansion, it will face problems such as equipment replacement and module upgrade; 4. It involves strong electricity and high voltage, and often requires all-weather monitoring of all equipment When the system fails and is difficult to eliminate, it is easy to cause the primary mirror to break. Therefore, the development of a highly reusable, scalable, safe and reliable primary mirror control system software framework has become a key issue to be solved.

Contents of the invention

For the defect of prior art, the present invention provides a kind of realization method that is applicable to the software framework of the main mirror control system with active support technology, the characteristics of this software framework are: 1) this software framework adopts message-response layer, device object The three-layer software structure of the first layer and the basic function layer, the software modules of each layer are less coupled, which is convenient for the access of new equipment or the upgrade of software modules; The principle defines the requirements and switching process of the main mirror control system in various states such as debugging, calibration, and normal operation; 3) The software framework defines the exception vector table and the corresponding software according to the abnormalities that may occur in the main mirror control system Protection measures to ensure the safety of the primary mirror in the event of a failure.

The technical solution adopted in the present invention is: a method for realizing the software frame applicable to the master mirror control system with active support technology, the software frame is realized through three layers: message-response layer, device object class layer, and basic function layer, The implementation method is as follows:

1) In the message-response layer, classify the messages that the system needs to process, and in the message mapping, bind the win message to the corresponding response function;

2) According to the state machine diagram, define the functions of the system in various states and the switching process between states;

3) In the device object class layer, analyze the startup, shutdown, and workflow of each device, and determine the variable resources and function resources that need to be encapsulated in the device class object;

4) Read the database during program initialization, and establish a global exception vector and exception level.

Principle of the present invention is: technical task of the present invention is realized by following technical means:

1) In this software framework, the message-response layer calls the device object layer to complete the startup and shutdown of multiple devices in turn during the message response process, without having to care about the startup and shutdown process of the device itself. The device object layer sends specific information by calling the basic function layer. Start and stop commands and control commands, without having to care about the communication interface of the device itself;

2) In the message-response layer, create a main thread based on the message-response mechanism, first analyze the system requirements, determine and classify the system messages, and bind the relevant response functions in the message map;

3) During the state switching process, analyze the general state machine transition diagram of the primary mirror control system, including five states: debugging state, ready state, calibration state, working state, and abnormal state, including calibration messages, working messages, shutdown messages, There are five types of messages: abnormal message and recovery message, and the system state is switched according to the message trigger;

4) Establish the equipment object classes corresponding to the main mirror support force motor and the temperature control fan, analyze the common operations required by each equipment, and encapsulate them as sub-functions of the class objects, such as equipment startup process, shutdown process, and control algorithm process and other submodules, this layer provides a concise and clear interface for the message-response layer to call;

5) The basic functional layer is the general communication class, file operation class, etc., among which the communication class encapsulates various interface protocols, such as serial port, TCP/IP interface, and the file operation class encapsulates file read/write operations and other operations. The basic function layer is designed on the basis of interface API and file operation API provided by VC;

6) Analyze the possible exceptions of the system, establish an exception database, including the description of the exception, the impact of the exception, the protection measures for the exception, the solution to the exception, the probability that the exception may occur, and the level of the exception, and configure it during the initialization process of the program , take corresponding protective measures by looking up the database when an exception occurs, and prompt possible solutions.

The advantage of the present invention compared with prior art is:

The present invention is a software framework developed on the VisualStudio platform. What is different from the prior art is that the present invention introduces a state machine mechanism, and comprehensively considers various requirements and switching of the main mirror control system in debugging, calibration, and normal operating states. The process of writing the module interface of the software reduces the software development cost and improves the reuse rate of the software module; the present invention introduces the main thread based on the message-response mechanism, and maps the state machine switching message and the interface refresh message to the software framework. The win message triggers parallel processing of multiple threads according to the message, effectively improving software efficiency; the present invention introduces an exception handling mechanism, and uses it as a kind of system state, when an exception occurs, implement software protection as soon as possible according to the level of the exception Measures, alarms, and reduce the occurrence of security incidents.

Description of drawings

Fig. 1 is the three-layer software structure based on message-response mechanism that the present invention realizes;

Figure 2 is a state transition diagram of the system based on the state machine.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 shows the composition schematic diagram of the software frame that the realization method of the present invention realizes, a kind of software frame that is applicable to the master mirror control system with active support technology, its software frame passes message-response layer, device object class layer, basic function layer Three layers are implemented, and the implementation method is as follows:

1) In the message-response layer, classify the messages that the system needs to process, and in the message mapping, bind the win message to the corresponding response function;

2) According to the state machine diagram, define the functions of the system in various states and the switching process between states;

3) In the device object class layer, analyze the startup, shutdown, and workflow of each device, and determine the variable resources and function resources that need to be encapsulated in the device class object;

4) Read the database during program initialization, and establish a global exception vector and exception level.

The following is a detailed introduction to each step:

The messages that the system needs to process are divided into the following two types according to the nature of the messages: 1) WM_STATE_: This message is a state switching message, in which the calibration message, work message, shutdown message, and recovery message are sent by the UI interface, and the exception message is sent by the After the refresh thread sends out and receives the state switching message, it completes the state switching function according to the callback function bound in the message map. 2) WM_UPDATE_: This message is a refresh status message sent by a timer. After receiving the message, call the device object class to read the current support force and temperature information, refresh the interface to display the current status, and judge whether the current data is abnormal. An exception message is emitted if there is an exception.

Since the software framework adopts a state machine transition mechanism, the state transition diagram of the system is first drawn, as shown in Figure 2. There are five states in the system: debugging state, ready state, calibration state, working state, and abnormal state. The messages in the system are as follows: : The working message of the UI interface, the calibration message of the UI interface, the closing message of the UI interface, the recovery message of the UI interface, and the abnormal message, wherein the abnormal message is generated by the system according to its own state judgment. The five system states are described below.

After the system is initially powered on, it is in the debugging state. During the debugging process, the software monitors the status of each device and displays it on the interface. During the debugging process, the unit test of the device can be realized. After the debugging is completed, it enters the preparation state of the system. This process is irreversible.

After the system enters the ready state, the software will monitor the state of the main mirror and send an alarm signal when it is abnormal, and at the same time start responding to the status switching message on the UI interface. If the calibration message on the UI interface is received, the system will transfer from the ready state to the calibration state, to calibrate the system; if a work message from the UI interface is received, the system changes from the ready state to the working state.

When the system is in the calibration state, after the support force-voltage table of the main mirror is calibrated, wait for the message on the UI interface, and then enter the working state;

In the working state, the system continuously monitors the supporting force state of the main mirror, and sends corresponding control signals according to the high-angle information of the telescope. If it receives a closing message from the UI interface, it will call the closing process and return to the ready state. The software is constantly powering on It is always in a state of readiness and monitors the status information of the equipment around the clock.

When the system is in the ready state, calibration state, and working state, if the software detects that the system has an abnormality that cannot be ignored, such as the device is powered off, the device does not respond, etc., it will send a WM_STATE_UNNORMAL exception message through SendMessage, take software protection measures, and transfer to Enter the abnormal state, wait for the system maintenance, and return to the ready state when receiving the recovery message from the UI interface, that is, the maintenance is completed.

In the device object layer, define the resource pool related to the supporting force information and temperature control information of the primary mirror, and refresh the data of the resource pool in real time according to the trigger of the refresh message, and call the resource pool when the message-response layer needs to obtain the state of the primary mirror The data can be displayed.

In the device object layer, write the control algorithm related to the main mirror support motor and temperature control fan, and reserve the call interface for the message-response layer.

The implementation of this method can enable designers to concentrate on the control algorithm of the device itself or interesting research directions, reduce the excessive energy spent by designers on issues such as software module reuse, greatly reduce software development costs, and improve the efficiency of software modules. High reuse rate, reducing safety accidents caused by equipment failure, suitable for upgrading and expansion of the main mirror control system with active support technology, effectively improving economic benefits.

Claims (7)

1. be applicable to an implementation method for the software frame of the primary mirror control system with initiatively support technology, this software frame is realized by message-response layer, device object class layer, basic training ergosphere three layers, it is characterized in that: this implementation method is specific as follows:

1) in message-response layer, need message to be processed to classify system, in message maps, win message is tied to corresponding response function;

2) according to state machine diagram, the function of define system under various states, and the switching flow between state;

3) in device object class layer, analyze the startup of often kind of equipment, close down, workflow, determine the variable resource function resource needing in equipment class object to encapsulate;

4) reading database in program initialization process, sets up the exception vector of the overall situation and abnormal rank.

2. the implementation method being applicable to the software frame of the primary mirror control system with initiatively support technology according to claim 1, it is characterized in that: message-response layer not only can response interface message, refresh message, the unexpected message that also can produce in responding system operational process, in message response process, invocation facility object layer completes the start and stop of multiple equipment successively, and need not the start and stop flow process of interested devices itself; Device object layer sends concrete start stop command and control command by calling basic training ergosphere, and need not the communication interface of interested devices itself.

3. the implementation method being applicable to the software frame of the primary mirror control system with initiatively support technology according to claim 1, it is characterized in that: establish for the general state machine transition diagram of telescope primary mirror control system, contain debugging mode, standby condition, demarcation state, duty, abnormality five kinds of states, contain and demarcate message, operative message, closedown message, unexpected message, permission message recovery five kinds of message, switch according to message trigger between system state.

4. the implementation method being applicable to the software frame of the primary mirror control system with initiatively support technology according to claim 1, it is characterized in that: it is win message in software frame that system state is switched message macro definition by message-response layer, and bind its response function, create main thread in a program, all the time round robin current message, thus completion system state machine switches, interface refresh function.

5. the implementation method being applicable to the software frame of the primary mirror control system with initiatively support technology according to claim 1, it is characterized in that: device object layer establishes the corresponding device object class of primary mirror support force motor, temperature control blower fan, the conventional operation for this kind equipment is encapsulated in each object class, the conventional of this kind equipment is operating as device start flow process, closing flow path, control algolithm flow process submodule, this layer is the specific implementation of equipment flowsheet, and provides short and sweet interface and call for message-response layer.

6. the implementation method being applicable to the software frame of the primary mirror control system with initiatively support technology according to claim 1, it is characterized in that: basic training ergosphere relates to general device talk class, file operation class, wherein communication class encapsulates multiple interfaces agreement, file operation class wrapper file reads write operation operation, and basic training ergosphere is that the interface API and file operation API basis that provide at VC design.

7. the implementation method being applicable to the software frame of the primary mirror control system with initiatively support technology according to claim 1; it is characterized in that: described abnormal data storehouse; comprise abnormal description, abnormal impact, abnormal safeguard measure, abnormal solution, abnormal contingent probability, abnormal grade; be configured in the initialization procedure of program; take corresponding safeguard measure when abnormal generation by searching database, and point out possible solution.