TW201917600A - Controlling method for integrating standard programming language script structure in virtual machine and computer program product - Google Patents

Abstract

Embodiments disclose a controlling method for interpreting standard programming language script program in a virtual machine and a computer program product. The script program of a micro-controller is imported in the environment using the standard programming language such as the C programming language. A compiler compiles the script program. A virtual machine executes the script program to control a base-layer mechanical component. The virtual machine is constructed upon the open instructions, and the virtual machine and the base-layer mechanical component communicate with each other in accordance with the international standard IEC61800-7-201.

Description

Control method and program product of standard programming language script framework combined with virtual machine

The invention relates to a control method and a program product of a standard programming language script framework combined with a virtual machine, in particular to constructing a script of a microcontroller in an environment of a standard programming language and executing the script by a virtual machine. The virtual machine is built on an open instruction set, and the communication method between the virtual machine and the underlying mechanical components is invented through the IEC international standard.

Currently, if an end user wishes to write a script in a control system terminal (CSE), the script is usually written in a custom language of the CSE manufacturer. This language can attempt to be similar to an industry standard language such as the C language.

The execution engine can be divided into: (1) a direct interpreter type, see the second figure, the microcontroller (A) is connected to the CSE through the CSE device external communication interface (B), and the microcontroller (A) is used in The program text written by the author will be interpreted in the execution time to control the underlying mechanical component (C). This method has the disadvantage of low calculation efficiency due to redundant word processing. (2) Another implementation is a virtual machine (VM) (D). Refer to the third figure, which provides users with a virtual CPU (E) that implements the vendor's custom instruction set architecture (ISA) and transmits information through the virtual machine. The interface (F) controls the underlying mechanical components (G). The user's text program will be compiled into the machine code of the customized ISA before uploading it to the VM (D) for execution. The disadvantage is that the compiler tool chain is specific to a specific vendor and cannot be used to compile user programs written in a computer industry standardized language format.

In addition, referring to the second and third figures, the way in which the microcontroller (A) and virtual machine (D) communicate with the underlying mechanical components (C) (G) through the device application service interface (H) (I) For different vendors, the device application service interface (H) (I) uses different standards.

Overall, existing scriptable CSEs have the following limitations:

1. Except for the large potential user group consisting of most of the manpower trained in modern software programs, users of the information technology and electronics industries are generally unfamiliar with the programming languages used in the programming environment.

2. The programming environment does not conform to the "any" standard used in the field of industrial automation, information technology, or embedded electronics, and new users who need a scripting environment learn programming languages that cannot be transferred or reused.

3. CSE is the host of the execution environment, and the method of accessing CSE application services is not using international industry standards.

Therefore, the present invention proposes a standard programming language script architecture combined with a virtual machine control method to improve the aforementioned defects. The present invention includes the following steps:

Constructing a script of a microcontroller in a standard programming language environment; compiling the script using a compiler; executing the script by a virtual machine to control a low-level mechanical element, wherein the virtual machine is built in an open Instruction set, and the virtual machine communicates with the underlying mechanical components through the IEC international standard.

Further, the standard programming language is C language.

Further, a custom instruction may be added to the open instruction set.

Further, the communication between the virtual machine and the underlying mechanical components is through the international standard of IEC61800-7-201.

Further, the host CPU of the virtual machine is used to assist the virtual CPU of the virtual machine to perform operations.

Further, the mechanical code for interpretation by the virtual machine is loaded and stored in a program memory through a circuit simulator.

Further, the data data and the program data of the virtual machine are derived from part of the data data and part of the program data of the host of the virtual machine.

Further, the internal state of the virtual machine can be accessed through the same communication interface as the communication interface of the host of the virtual machine.

Further, the virtual machine and a physical main controller control the underlying mechanical element through the same control mode.

The present invention further proposes a program product, which is used to install to a computer and execute the control method of the aforementioned standard programming language script framework combined with a virtual machine.

According to the above technical features, the following effects can be achieved:

1. Make users who are familiar with microcontroller programming with a general electronics background have a simple learning curve.

2. End users can build advanced functions into CSE, without the need for CSE providers to risk exposing the details of the internal work of the VM host, which is a property right.

3. Pure software implementation can be added to existing devices just like software upgrades.

In summary of the above technical features, the standard programming language script framework of the present invention combined with the control method of the virtual machine and the main functions of the program product will be clearly presented in the following embodiments.

Referring to the first figure, a user writes a script by using an integrated development environment (IDE) (11) of a user computer (1) using a standard programming language, such as C language or JAVA. However, it is better to use the C language, because the C language is the most commonly used programming language, so that users who are familiar with microcontroller programming and have a general electronics background can have a simple learning curve.

A compiler (12) is used to compile the script, and then the script is converted into a mechanical code by a circuit simulator (13) for interpretation by a virtual machine (21) of the control system terminal (CSE) (2). The mechanical code is loaded into a program memory (211) of the virtual machine (21) through an external communication interface (22) of a device of the CSE (2).

The script is executed by the virtual machine (21) to control an underlying mechanical element (23), wherein the virtual machine (21) is constructed in an open instruction set, and can be used by users to add to the open instruction set. A custom instruction for users to expand instructions according to different needs, so users can build advanced functions into CSE (2) without the need for the CSE (2) provider to risk exposing the details of the internal work of the virtual machine that are property rights. The virtual machine (21) is connected to a device application service interface (24) through a virtual machine information transmission interface (212) to control the underlying mechanical component (23). The device application service interface (24) adopts the international standards of IEC Standards, such as the international standard of IEC61800-7-201, can save users' learning time because of adopting different standards. Furthermore, the internal state of the virtual machine (21) can be accessed through the same communication interface as the communication interface of the host of the virtual machine (21), that is, the user can directly connect to the CSE ( 2) the external communication interface (22) of the device and directly check the internal state of the virtual machine (21). The host CPU (213) of the virtual machine (21) can be used to assist the virtual CPU (214) of the virtual machine (21) to perform calculations to accelerate the calculation speed. In addition, the program data and data data of the virtual machine (21) are stored in the program memory (211) and a data memory (215) respectively, and the program data and data data come from the virtual machine (21). This mechanism provides part of the program data and some data data of the host. This mechanism provides resource dispersion and prevents the virtual machine (21) from having access to the host data and program data of the virtual machine (21).

It should be particularly noted that the CSE (2) can be connected to a physical main controller (3), and the virtual machine (21) and the physical main controller (3) can control the underlying machinery through the same control method. Element (23).

In another embodiment of the present invention, a program product is further provided, and the program product can be installed on a computer, so that the computer can execute the control method of the foregoing standard programming language script framework combined with a virtual machine. Therefore, the present invention is implemented by simple software, and can be added to an existing device just like software upgrade.

Based on the description of the above embodiments, the operation, use and effects of the present invention can be fully understood, but the above-mentioned embodiments are only preferred embodiments of the present invention, and the implementation of the present invention cannot be limited in this way. The scope, that is, the simple equivalent changes and modifications made according to the scope of the patent application and the description of the invention, are all within the scope of the present invention.

(1) ‧‧‧user computer

(11) ‧‧‧Integrated Development Environment

(12) ‧‧‧Compiler

(13) ‧‧‧Circuit Simulator (ICE)

(2) ‧‧‧Control System Terminal (CSE)

(21) (D) ‧‧‧Virtual Machine (VM)

(211) ‧‧‧Program memory

(212) (F) ‧‧‧Virtual Machine Information Transmission Interface

(213) ‧‧‧Host CPU

(214) (E) ‧‧‧Virtual CPU

(215) ‧‧‧Data Memory

(22) (B) ‧‧‧Device external communication interface

(23) (C) (G) ‧‧‧bottom mechanical components

(24) (H) (I) ‧‧‧Device Application Service Interface

(3) ‧‧‧Entity Master Controller

(A) ‧‧‧Microcontroller

[First Figure] is a functional block diagram of a system for performing the method of the present invention.

[Second figure] is a functional block diagram of controlling CSE by a microcontroller.

[Third figure] is a functional block diagram of controlling CSE by a virtual machine.

Claims (10)

A control method of a standard programming language script structure combined with a virtual machine includes the following steps: constructing a script of a microcontroller in a standard programming language environment; compiling the script using a compiler; and executing the script by a virtual machine, It is used to control a low-level mechanical element, wherein the virtual machine is constructed in an open instruction set, and the virtual machine communicates with the low-level mechanical element through the IEC international standard. According to the standard programming language script framework described in item 1 of the scope of the patent application combined with the control method of the virtual machine, wherein the standard programming language is C language. For example, the standard programming language script framework described in the first patent application scope and the virtual machine control method, wherein a custom instruction may be added to the open instruction set. For example, the standard programming language script architecture described in item 1 of the scope of patent application combines the control method of the virtual machine, wherein the communication between the virtual machine and the underlying mechanical component is through the international standard of IEC61800-7-201. The standard programming language script architecture described in item 1 of the scope of the patent application combines the control method of the virtual machine, wherein the host CPU of the virtual machine is used to assist the virtual CPU of the virtual machine to perform operations. According to the standard programming language script architecture described in item 1 of the scope of patent application combined with a control method of a virtual machine, a mechanical code for the virtual machine to read is loaded into a program memory through a circuit simulator. The standard programming language script architecture described in item 1 of the scope of patent application combined with a virtual machine control method, wherein the data data and program data of the virtual machine come from part of the data data and part of the program data of the host of the virtual machine. For example, the standard programming language script architecture described in the scope of application for patents combined with a virtual machine control method, wherein the internal state of the virtual machine can be accessed through the same communication interface as the communication interface of the host of the virtual machine. The standard programming language script architecture described in item 1 of the scope of the patent application combines the control method of a virtual machine, wherein the virtual machine and a physical main controller use the same control method to control the underlying mechanical element. A program product is used to install to a computer and execute a control method of a standard programming language script framework combined with a virtual machine as described in any one of claims 1 to 9 of the scope of patent application.