TW594456B - Man machine interface control device - Google Patents

Abstract

A device used to process the communication data between a control host system and a man machine interface (MMI) comprises a data memory used to store the communication data between control host system and MMI and a microprocessor including a communication program used to write the communication data from the control host system to the MMI and to read the communication data from the MMI for providing the control host system. Generally speaking, what the invention discloses is a control system, which comprises a MMI providing a user to output a data signal via input of MMI, a control host for processing data signal outputted from MMI, and a control device electrically connected in between the control host system and MMI for processing communication data between MMI and control host system.

Description

594456 V. Description of the Invention (1) Field of the Invention This case relates to a human-machine interface, and more particularly to a human-machine interface control device for processing communication data between a control host and a human-machine interface. BACKGROUND OF THE INVENTION In a control system, in order to facilitate the user to control the operation of a control host and transmit information between the user and the control host, a human-machine interface is required as a medium for communication between the operator and the control host. Human-machine interface (HMI) refers to the communication between the operator and the machine through input / output components such as buttons, keyboards and screens. Interface. The current automatic control technology has successfully developed many powerful and programmable human-machine interfaces. The designers of the automatic control system can complete the communication interface between the man-machine interface and the control host and integrate the automatic control system into an independently operable unit according to their design requirements and specifications. However, in the control system, the communication program used by the control host, such as a computer and the human-machine interface, for connection and communication is stored in the memory of the control host. The capacity of the communication programs used in the control system is usually quite large, so it will occupy a lot of memory space, and the speed of program execution will also slow down. In addition, when the control host is connected to the HMI, there will be a large amount of complicated information to communicate. The microprocessor of the control host must spend a lot of time processing each other's communication data. Therefore, the performance of the microprocessor of the control host will be seriously reduced and the control system will be wasted. Furthermore, it will affect the real-time nature of control signal and data signal transmission in the control system, making the execution efficiency of the control system change.

594456 5. Description of the invention (2) Poor. For this reason, the applicant's persevering research spirit developed a human-machine interface control device to process the communication data between the control host and the human-machine interface in the control system to avoid the control host from being generated by a large number of complicated communications. The disadvantages of long data processing time and poor system efficiency. SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a human-machine interface control device for processing communication data between a control host and a human-machine interface. Another object of this case is to provide a control system which has better performance and higher reliability. According to the above concept, the present invention is a device for processing communication data between a control host and a human-machine interface, which includes a data memory, preferably a static random access memory (SRAM). It is used to store the communication data between the control host and the man-machine interface, and a microprocessor unit including a communication program for writing the communication data from the control host to the man-machine interface and reading The communication information from the man-machine interface is provided to the control host. In addition, the above-mentioned device further includes a bus interface for receiving communication data from the control host and transmitting communication data from the human-machine interface to the control host; a decoding circuit for generating a control A signal to provide the microprocessor unit and the data memory to process communication data between the control host and the human-machine interface; a bus buffer circuit for controlling communication data between the control host and the human-machine interface Data flow; and a sequential drive ^^ circuit to select and receive from the man-machine interface

Page 5 594456 V. Communication information of the description of invention (3) and transmission of communication data from the control host to the man-machine interface. In addition, the above device also includes a watchdog circuit for taking the microprocessor unit offline and resetting the microprocessor unit when the microprocessor unit is down. According to a second aspect of the case, a device for processing communication data between a control host and a human-machine interface includes a decoding circuit for generating a control signal for processing the control host and the Communication data between man-machine interface; a data memory, preferably a static random access memory (SRAM), used to store the communication data between the control host and the man-machine interface in response to control signals ; And a microprocessor unit including a communication program for writing communication data from the control host to the human-machine interface in response to a control signal, and reading communication data from the human-machine interface to provide the control Host. The above device further includes a bus interface for receiving communication data from the control host and transmitting communication data from the human-machine interface to the control host; a bus buffer circuit for controlling the control host and the Data flow of communication data between human-machine interfaces; a serial communication drive circuit for receiving communication data from the human-machine interface and transmitting communication data from the control host to the human-machine interface. In addition, the above-mentioned device further includes a watchdog circuit for taking the microprocessor unit offline and resetting the microprocessor unit when the microprocessor unit goes down. According to the idea of a broad aspect of this case, this case proposes a control system, which includes a human-machine interface to provide an operator with the human-machine interface.

594456 V. Description of the invention (4) The communication data between the master and the man-machine output from the interface input and output interface Among them, the bus) and the control line communication cable and the above-mentioned state random access records the man-machine interface Communication programs, interfaces, and host computers. In addition, the information from the control host to the control is provided to provide the machine and the human machine to control the control master. A serial communication driver and transmission are from a watchdog circuit. The processor unit is offline.

A data signal; a control host for processing the human-machine data signal; and a control device electrically connected between the control interface for processing the human-machine interface and the control data. The control host is connected by an industry standard architecture bus (I SA device, and the man-machine interface is connected by a RS 2 32 sequence. The control device includes a data memory, preferably a It is composed of static memory (SRAM), which is used to store the communication data between the control host and a microprocessor unit.

V takes the communication data from the human-machine interface to provide to the control device, and further includes a bus interface for receiving the communication data, and transmitting a universal host from the human-machine interface; a decoding circuit, It is used to generate a control signal microprocessor unit and the data memory to process the communication data between the control main plane; a bus buffer circuit for the poor material flow of communication materials between the machine and the man-machine interface; A moving circuit for receiving communication data from the man-machine interface and communication data of the control host to the man-machine interface; and for causing the microprocessor unit to reset the microprocessor when the microprocessor unit goes down unit,. The narrative and the advantages and characteristics of this case can be obtained by the following

Page 7 594456 V. Description of the invention (5) The embodiment is described in detail with the following illustrations to gain a deeper understanding. Simple illustration of the diagram. Figure 1 is based on the case and Figure 2 is the root box. The diagram does not control the host human-machine interface serial communication data memory watchdog electrical serial communication. In this case, the device is a face-to-face communication. Performance. According to the intent of the case. Included in the 11 13 cable, 15 body, 122 circuit, 124 drive circuit example, the human machine control host is designed to use data, borrowing a block diagram of the control system of a preferred embodiment; a human machine interface control device of a preferred embodiment Each element of the system has 126 controls and man-machines responsible for reducing the mitigation control 12 shown in the present case according to the present case, a large number and intention. As shown, the man-machine interface 1 3. For a human-machine interface control device 1 1 and human-machine interface 1 3 are listed as follows: Human-machine interface control device 1 2 Bus 1 4 Microprocessor unit 1 2 1 Decoding circuit 1 2 3 Bus buffer circuit 1 2 5 The bus interface 1 2 7 device is a communication bridge applied to a control system interface. Human-machine interface control process control master. Machine such as a computer and human-machine control host burden and increase the control system of a preferred embodiment of the control system. The block diagram shows that the control system includes a control host 11 and a host system. The control system increases. It is used to handle the complicated communication data of the control host. HMI control

Page 8 594456 V. Description of the invention (6) The device 12 uses a bus 14 to communicate with the control host 11 as an industry standard architecture bus (ISA bus), and a serial communication cable 15 such as an RS The 2 3 2 serial communication cable communicates with the man-machine interface 1 3. Such a design can make the control host 11 not waste a lot of time to process a large amount of complicated communication data, and all the communication data between the control host 11 and the human-machine interface 13 are handed over to the human-machine interface control device 1 2 to deal with. In this way, the control host 11 has more time to deal with more important tasks, such as the movement of the machine or the collection of real-time data. The performance of the control system will be improved as a result, and the data processing can meet the requirements of real-time processing. Please refer to FIG. 2, which is a block diagram of a human-machine interface control device 12 in a control system of a preferred embodiment of the present invention. It is worth noting that the communication program used to process the communication data between the control host 11 and the human-machine interface 13 is contained in the microprocessor unit 1 21 instead of being stored in the conventional technology. In the memory of the control host, the memory occupation rate of the control host is greatly reduced. In order to cope with the continuous data requirements of the human-machine interface 13, the data memory 1 2 2 is a static random access memory (SRAM), which is provided as the data between the control host 11 and the human-machine interface 13 Swap cache. When the user inputs data signals from the human-machine interface 13 and outputs them, the generated data signals are transmitted from the human-machine interface 13 to the human-machine interface control device 12 through the serial communication cable 15. The serial communication driving circuit 1 2 6 is used to convert the data signal and the serial communication voltage level, so as to control the data transmission and reception between the man-machine interface control device 12 and the man-machine interface 13. When the serial communication drive circuit 1 2 6 receives the data signal transmitted by the human-machine interface 1 3, the data signal is stored in the data

Page 9 594456 V. Description of the invention (7) Memory 1 2 2 If the control host 1 1 needs these data, the microprocessor unit 1 2 1 can read directly from the data memory 1 2 2 and transmit the data to the control host 1 through the bus interface 1 2 7 as the control host 1 1 Need to write data · When the man-machine interface 1 3, you only need to store the data in the data memory 1 2 2 and the microprocessor 1 2 1 will send the data to the man-machine interface 1 3 to complete the data writing HMI 1 to 3 operations. The function of the decoding circuit 1 2 3 is that when the control host 11 1 wants to write data into the man-machine interface 13, the data is to be stored in the data. The position of the memory 1 2 2 is decoded and a control signal is generated to control the micro processing. The data exchange between the processor unit 1 2 1 and the data memory 1 2 2 is performed. The bus interface 1 2 7 is used as the interface between the man-machine interface control device 12 and the control host 1 1, and the bus buffer circuit 1 2 5 is used to control the control host 1 1 and the human The communication data flow between the machine interface 1 and 3. The human-machine interface control device 12 further includes a watchdog circuit (¥ 31: (: 11 (1〇2 (3 丨 1 '(: 11 丨 〇124. The function of the watchdog circuit 12 4 is to prevent micro The processor unit 121 crashed. When the microprocessor unit 1 2 1 crashed, the gate circuit 1 2 4 would take the microprocessor unit 1 2 1 offline and reset the microprocessor unit 121 To prevent the microprocessor unit 1 2 1 from crashing, the entire control system stops working (ha 11). In summary, the human-machine interface control device in this case is designed to handle the control host and human in the control system. Communication data between machine interfaces. If a man-machine interface control device is added between the control machine and the man-machine interface, the control machine can save the time spent processing the large and complicated communication between the control machine and the man-machine interface. The memory space occupied by the control host for storing the communication program is saved. Therefore, the execution efficiency of the communication program is increased.

Page 10 594456 V. Description of the invention (8) In addition, the efficiency of the control system can also be improved, and the reliability of the control system is greatly improved. Therefore, even though this case has been described in detail in the above embodiments and can be modified in various ways by persons skilled in the art, it is not inferior to those who want to protect the scope of patent application.

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Claims (1)

594456 VI. Scope of patent application 1. A device for processing communication data between a control host and a human-machine interface, including: a data memory for storing communication data between the control host and the human-machine interface; And, a microprocessor unit includes a communication program for writing communication data from the control host into the human-machine interface, and reading communication data from the human-machine interface to provide the control host. Among them, the data memory includes the device. 2 · The device described in item 1 of the patent application scope includes a static random access memory (SRAM) 3. The device described in item 1 of the patent application scope includes : A bus interface for receiving communication data from the control host and transmitting communication data from the man-machine interface to the control host; a decoding circuit for generating a control signal to provide the microprocessing benefit: Zaoyuan and the tribute memory process communication data between the control host and the human-machine interface; a bus buffer circuit for controlling the data flow of communication data between the control host and the human-machine interface; and a sequence The communication driving circuit is used for receiving communication data from the human-machine interface and transmitting communication data from the control host to the human-machine interface. 4. The device according to item 1 of the scope of patent application, wherein the device further comprises: a watchdog circuit for taking the microprocessor unit offline and resetting the microprocessor when the microprocessor unit goes down.器 Unit. Page 13 594456 VI. Patent Application Range 5-Device for processing communication between a control host and a human-machine interface. The data includes: a decoding circuit for generating a control signal and providing for processing the control Communication data between the host and the man-machine interface; a data memory for storing communication data between the control host and the man-machine interface in response to a control signal; and a microprocessor unit including a communication program for According to the control signal, the communication data from the control host is written into the human-machine interface, and the communication data from the human-machine interface is read to be provided to the control host. 6. The device according to item 5 of the scope of patent application, wherein the data memory comprises a static random access memory (SRAM). 7. The device according to item 5 of the scope of patent application, wherein the device further comprises: a bus interface for receiving communication data from the control host, and transmitting communication data from the human-machine interface to the control host A bus buffer circuit for controlling the data flow of the communication data between the control host and the man-machine interface; and a serial communication driving circuit for receiving communication data from the man-machine interface and transmitting from the control The communication data of the host computer goes to the man-machine interface. 8. The device according to item 5 of the scope of patent application, wherein the device further comprises: a watchdog circuit for taking the microprocessor unit offline and resetting the microprocessor when the microprocessor unit goes down.器 Unit. 9. A control system comprising: Page 14 594456 VI. Patent application scope A human-machine interface, providing an operator to output a data signal through the human-machine interface input; a control host for processing the data signal output by the human-machine interface; and The control device is electrically connected between the control host and the man-machine interface, and is used for processing communication data between the man-machine interface and the control machine. 10. The system according to item 9 of the scope of patent application, wherein the control host is connected to the control device by an industry standard architecture bus (I S A). 1 1. The system described in item 9 of the scope of patent application, wherein the man-machine interface is connected to the control device by an RS2 3 2 serial communication cable. 1 2. The system according to item 9 of the scope of patent application, wherein the control device comprises: a data memory for storing communication data between the control host and the man-machine interface; and a microprocessor unit, It includes a communication program for writing communication data from the control host into the man-machine interface, and reading communication data from the man-machine interface to provide the control host. 1 3. The system according to item 12 of the scope of patent application, wherein the data memory system includes a static random access memory (SRAM). 1 4. The system described in item 9 of the scope of patent application, wherein the control device further comprises: * a bus interface for receiving communication data from the control host, and transmitting communication data from the human-machine interface to The control host; a decoding circuit for generating a control signal to provide the micro processing Page 15 594456 6. The scope of the patent application, the processor unit and the data memory process the communication data between the control host and the human-machine interface; a bus buffer circuit is used to control the communication between the control host and the human-machine interface Data flow of communication data; and a serial communication drive circuit for receiving communication data from the human-machine interface and transmitting communication data from the control host to the human-machine interface. 1 5 · The system according to item 9 of the scope of patent application, wherein the control device further comprises: a watchdog circuit for taking the microprocessor unit offline and resetting it when the microprocessor unit goes down. The microprocessor unit. Page 16