CN117061579A - Visual hierarchical alarm system based on EPICS - Google Patents

Visual hierarchical alarm system based on EPICS Download PDF

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Publication number
CN117061579A
CN117061579A CN202311127403.8A CN202311127403A CN117061579A CN 117061579 A CN117061579 A CN 117061579A CN 202311127403 A CN202311127403 A CN 202311127403A CN 117061579 A CN117061579 A CN 117061579A
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alarm
epics
information
process variable
input
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Inventor
潘天红
刘东洋
余银钢
周宸峰
田佳强
陈帆
陶骏
丁石川
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Anhui University
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Anhui University
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H04L67/125—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks involving control of end-device applications over a network
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/069—Management of faults, events, alarms or notifications using logs of notifications; Post-processing of notifications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/2866—Architectures; Arrangements
    • H04L67/2871—Implementation details of single intermediate entities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/2866—Architectures; Arrangements
    • H04L67/30—Profiles
    • H04L67/303—Terminal profiles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Computing Systems (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing And Monitoring For Control Systems (AREA)

Abstract

The application discloses a visual hierarchical alarm system based on EPICS, which belongs to the field of monitoring alarm of industrial control equipment and comprises the following components: the system comprises an input/output control module, an information transmission module and an application module; the input and output control module, the information transmission module and the application module are sequentially connected; the input/output control module is used for receiving the process variable of the controlled equipment and writing the process variable into a record file; the information transmission module is used for transmitting the process variable to the application module; the application module is used for carrying out visual hierarchical alarm display on the alarm type of the process variable based on EPICS, and monitoring the running state of the controlled equipment in real time based on the display result. The application carries out visual hierarchical alarm display on the alarm type of the process variable of the controlled equipment, can realize timely and accurate processing during processing, reduces the influence of abnormal conditions and reduces possible loss.

Description

Visual hierarchical alarm system based on EPICS
Technical Field
The application belongs to the technical field of monitoring and alarming of industrial control equipment, and particularly relates to a visual hierarchical alarming system based on EPICS.
Background
The large-scale experiment physical and industrial control systems such as accelerators are widely distributed in number of controlled devices. The data processing requirements for all devices are continuously improved, and the distributed control system based on EPICS can realize the sharing of real-time data of the control system by a local area network computer, provide hundreds of hardware interface device drivers commonly used by accelerators, and facilitate the management of controlled devices. The system based on EPICS is easy to develop, and a user can create a control system according to the requirements, so that the workload of a developer for developing programs secondarily is greatly reduced; the EPICS system is composed of three layers, and each layer is provided with a corresponding interface.
A large number of process variables are generated in the running process of each device of the control system, and the real-time monitoring and scientific management of the process variables are particularly important. However, in consideration of the large number of process variables, when abnormal conditions occur, alarming information can be timely and accurately informed to staff so as to facilitate processing, avoid possible damage and reduce loss. The alarm system also needs to store alarm information in real time, so that workers can conveniently inquire fault information and scientifically analyze data.
At present, aiming at large controlled equipment such as an accelerator and the like, various data are collected, monitored and stored in real time, timely and detailed alarm processing on abnormal conditions of the data is lacking, a part of alarm systems cannot give timely and accurate alarms, the alarm conditions are lack of grading, inconvenience is brought to control work of staff, and follow-up staff is not facilitated to inquire and analyze the data.
Disclosure of Invention
The application provides a visual hierarchical alarm system based on EPICS, which aims to solve the technical problems in the prior art.
In order to achieve the above object, the present application provides a visual hierarchical alarm system based on EPICS, comprising:
the system comprises an input/output control module, an information transmission module and an application module; the input and output control module, the information transmission module and the application module are sequentially connected;
the input/output control module is used for receiving the process variable of the controlled equipment and writing the process variable into a record file;
the information transmission module is used for transmitting the process variable to the application module and storing the operation information of the visual hierarchical alarm system;
the application module is used for carrying out visual hierarchical alarm display on the alarm type of the process variable based on EPICS, and monitoring the running state of the controlled equipment in real time based on the display result.
Preferably, the input/output control module is further connected to an equipment controller, where the equipment controller is configured to perform configuration writing on the controlled equipment, and set different variable address names based on the configuration writing program, where the variable address names correspond to the process variables.
Preferably, the record file comprises a device type description field, an input-output link field, a scanning period field, a parameter input-output precision field, an upper limit value field, a lower limit value field, an alarm severity field and a digital quantity on-off field.
Preferably, the application module includes: the alarm monitoring interface, the alarm area panel and the sound alarm device;
the alarm monitoring interface is used for carrying out alarm processing on the alarm type of the controlled equipment;
the alarm area panel is used for obtaining alarm types based on a plurality of fields of the record file and displaying graded color images based on the alarm types;
the sound alarm device is used for sending out alarm sounds with different frequencies based on the digital quantity on-off field.
Preferably, the alarm monitoring interface comprises: the switch assembly, the display assembly and the alarm indicator lamp;
the switch component is used for controlling the start and stop of the controlled equipment and the sound alarm device;
the display component is used for displaying monitoring parameters of the controlled equipment in real time, and the display component comprises: coordinate axis, instrument panel, decimal number;
the alarm indicator lamp is used for displaying the working state of the sound alarm device.
Preferably, the alarm monitoring interface is displayed in a digital manner, and the alarm monitoring interface is associated with the process variable in a digital manner.
Preferably, in the alarm area panel, the alarm area panel is divided into a plurality of areas based on the number of the process variables, and alarm images of different grades are presented based on the plurality of areas.
Preferably, in the application module, based on the alarm type of the process variable, the alarm severity of the controlled device is obtained, and based on the alarm severity, alarm images of different grades are triggered, and meanwhile, alarm sounds of corresponding grade frequencies are triggered.
Preferably, the alarm type includes: normal state, unassigned initial value, record disconnection and numerical limit out of limit.
Preferably, in the information transmission module, a plurality of topics are created based on EPICS, and the operation information of the visual hierarchical alarm system is respectively stored through the plurality of topics, wherein the operation information comprises: real-time alarm information, configuration information, instruction information, sound alarm information and image alarm information of process variables of the controlled equipment.
Compared with the prior art, the application has the following advantages and technical effects:
the application provides a visual hierarchical alarm system based on EPICS, which receives process variables of controlled equipment through an input/output control module and writes the process variables into a record file; transmitting the process variable to the application module through an information transmission module; and through an application module, the alarm type of the process variable is subjected to visual hierarchical alarm display based on EPICS, and the running state of the controlled equipment is monitored in real time based on a display result.
The application carries out visual hierarchical alarm display on the alarm type of the process variable of the controlled equipment, can realize timely and accurate processing during processing, reduces the influence of abnormal conditions and reduces possible loss. The alarm records are stored in real time, so that the inquiry and analysis of staff are facilitated. The application can solve the problem of alarm monitoring of multiple objects in the field of experimental physics and industrial control, and has wide application prospect and economic benefit.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is a block diagram of an alarm system according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an alarm system according to an embodiment of the present application;
FIG. 3 is a flow chart of alarm system creation in accordance with an embodiment of the present application.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is illustrated in the flowcharts, in some cases the steps illustrated or described may be performed in an order other than that illustrated herein.
Example 1
As shown in fig. 1, the structural block diagram of the alarm system, the visual hierarchical alarm system based on epcss according to the embodiment includes: the system comprises an application end, an alarm information middleware and a server end. The Channel Access (CA) protocol is a protocol based on a TCP/IP transmission mode and is mainly responsible for data transmission of an application end, an alarm information middleware and a server end. The user may access and control a specific Process Variable (PV) via a channel access protocol and may also obtain information about the status of the channel connection.
As shown in fig. 2, the alarm system structure schematic diagram is that the alarm system based on the EPICS mainly operates an operator interface module (Operator Interface, OPI) at the application end, the alarm information middleware mainly operates as a message transfer station and a database, and the server end mainly operates an Input/output control module (Input/Output Controller, IOC) and an equipment controller.
The operator interface module is used for real-time monitoring and alarming processing of the process variable running state of the controlled equipment on site through creating and using the man-machine interaction interface. The operator interface module of the application end generally uses workstations such as HP, graphics, SUN, or PC as an operator control platform. An operating system such as HPUX, sunOS, linux and Windows is generally used.
The alarm information middleware is used as a message transfer station in an alarm system and is used for delivering the alarm information to an application end and a server end; as a database, real-time alarm information, configuration information, instruction information, sound alarm information, and image alarm information of process variables may be stored in corresponding topics.
The process variable of the controlled equipment monitored by the service-side input-output control module corresponds to the producer of the topics, and the operator interface module of the application-side corresponds to the consumer of the topics. The input/output control module of the server communicates with the device controller through a network, and different network communication protocols are adopted according to different device controllers. The input/output control module stores the process variable information acquired by the field device in real time to finish the work of setting and adjusting the control quantity, setting the data alarm limit value, converting the engineering quantity and the physical quantity data and the like.
The device controller is connected with the controlled object and is mainly responsible for processing signals sent by the field device and sending the signals to the input/output control module, converting instructions sent by the operator interface module into signals to be input into the field device and realizing control functions. The operator performs a series of control instruction information through the monitoring interface at the operator interface module, and sends the control instruction information to the equipment controller through the input/output control module, and the equipment controller performs operation on the field controlled equipment.
The application end mainly comprises an alarm monitoring interface, an alarm area panel and an audible alarm device. The alarm monitoring interface mainly comprises a switch, a parameter real-time display, a parameter input, an alarm indicator lamp, an instrument panel and other components. And displaying all monitoring parameters of the controlled equipment in real time through coordinate axes, instrument panels and decimal numbers. The switch component can carry out alarm processing when the equipment is in abnormal condition, and the switch component can control the equipment to start and stop and also can control the sound alarm device to start and stop. When an alarm condition occurs, the alarm processing can be carried out on the controlled equipment by inputting the set parameters. The alarm indicator light is used for displaying the working state of the audible alarm device, green represents that no alarm sound is emitted, and red represents that the alarm sound is emitted. The alarm area panel is equally divided into a plurality of rectangular areas according to the recorded files of the process variables of the controlled equipment written by the server, and marks corresponding to the names of the process variables are arranged in the areas. When an alarm condition occurs, the area panel will appear as a graded image color based on the alarm severity. The sound alarm device consists of buzzers which can send out alarm sounds with different frequencies. The sound alarm device is triggered when the on-off field of the digital quantity of the record file written by the server reaches an alarm condition, and can be closed by a corresponding switch component of the alarm monitoring interface.
The alarm information middleware designs five theme libraries, and can store real-time alarm information, configuration information, instruction information, sound alarm information and image alarm information of process variables of the controlled equipment in corresponding themes. The real-time alarm information theme mainly stores the real-time display information of parameters of the alarm monitoring interface, the configuration information theme mainly stores a record file of a process variable written by the server, the instruction information theme mainly stores a parameter input instruction of the alarm monitoring interface, the sound alarm information theme corresponds to the sound alarm device, and the image alarm information theme corresponds to the alarm area panel.
And the server is mainly used for writing a process variable record file of the controlled equipment in the input/output control module. The record file comprises a device type description field, an input-output link field, a scanning period field, a parameter input-output precision field, an upper limit value field, a lower limit value field, an alarm severity field, a digital quantity on-off field and the like. The setting of these fields directly affects the alarm type. The device controller in the system uses a Siemens series programmable controller.
As shown in fig. 3, the alarm system creates a flow chart, the visual hierarchical alarm system based on the EPICS, the server side equipment controller mainly adopts a Programmable Logic Controller (PLC), firstly, new equipment is needed for the PLC, and program blocks are configured and written for the equipment, and the input quantity and the output quantity of the program blocks of the configuration equipment are required to set different variable address names according to the difference between the digital quantity and the analog quantity. The address variable names correspond to parameters displayed in real time and input parameters in an alarm monitoring interface, and also correspond to process variables in a record file written by an input/output control module of a server side in an alarm area panel, and are data which need to be monitored and alarm when abnormal conditions occur in industrial control. After the variable address name is set in the device controller PLC of the server, an IOC engineering file with a fixed template is newly built in the EPICS. The most important thing in the process of creating the IOC engineering file is the writing of the record file. The record file has a specific format, and the fields of the record file are predefined for the EPICS software tool set. After the writing of the record file is completed, the operation needs to be started, and the communication with the PLC is realized through an S7nodave protocol. And then, the configuration of an alarm monitoring interface and an alarm area panel is carried out, and the interface configuration needs to be designed by using CSS-Phoebus software in an EPICS tool set. The components such as a switch, a parameter real-time display, a parameter input, an alarm indicator lamp, an instrument panel and the like are special for the Phoebus. Wherein the switch and the alarm indicator light are in a digital quantity display mode and need to be associated with corresponding Process Variable (PV) names in the record file. During interface configuration, if the component is not associated with a PV name, a process variable disconnection type alarm may be caused. The real-time display of parameters, the input of parameters and the display of the instrument panel are in analog quantity input and output presentation modes, and the parameters and the instrument panel are also required to be associated with corresponding PV names in a record file. The alarm area panel interface needs to be added with process variable names first, and the interface is divided into a plurality of areas equally according to the number of the process variable names so as to be used for presenting alarm images of different grades. Finally, the design of the alarm information middleware is realized, wherein the design of the middleware needs to use Kafka software in an EPICS tool set, five topics are created through a series of instructions of Kafka, process variables in the IOC engineering file are used as producers of the topics, and OPI alarm monitoring interfaces and alarm area panels are used as consumers of the topics. The inquiry of the topic storage alarm information can be directly inquired through an alarm monitoring interface and an alarm area panel. After the above work is completed, the visual hierarchical alarm system based on EPICS is completed, program blocks of newly built and configured equipment are compiled and downloaded to the PLC, the IOC engineering file and Kafka software are started, then an alarm monitoring interface and an alarm area panel are opened, and the alarm system starts to operate to implement a monitoring alarm function on process variables of the controlled equipment.
At the application end, the alarm monitoring interface is used for displaying state alarm information of process variables of the controlled equipment and carrying out alarm processing when abnormal conditions occur; the alarm area panel is used to display the change in color of the image when in an alarm state. In addition, the application end also comprises sound alarm devices for giving out sound alarms of different frequencies of different levels of alarm states. The alarm information middleware is mainly used for transmitting alarm information at an application end and a service end, and can also store information such as real-time state alarm information, instruction information, relevant configuration and the like of equipment process variables in corresponding topics. At the server, the alarm system communicates with the process variable of the equipment to be monitored through a channel access protocol, and monitors the state of the process variable in real time. In addition, the server side also sends instruction information transmitted by the application side to the controlled equipment to make the controlled equipment respond to the state.
In EPICS-based distributed systems, the server monitors devices on site through a head-end device controller. When abnormal conditions such as numerical value out-of-limit, process variable disconnection or no initial value appear in the process variable of the equipment, the server determines the severity of the alarm according to the actual condition of the equipment, and then sends the alarm information to the application end through the alarm information middleware. The application end triggers images with different colors according to the severity level to display, and triggers alarm sounds with corresponding level frequencies, so that staff equipment is reminded of abnormal conditions and needs to be processed in time according to the alarm level. After that, the information such as specific alarm time, alarm type and alarm severity can be stored in the middleware after the confirmation of the staff at the application end so as to be used for the staff to inquire data and scientifically analyze.
In order to make the field staff better distinguish which are serious alarms which must be processed immediately and which are mild alarms which can be solved slowly, the embodiment classifies the alarm type and the severity of the alarm when the system is designed, and shows the classification difference of the image color visualization and the classification difference of the alarm sound frequency. Therefore, the staff can respond in preparation according to the alarm information, the accuracy of solving the emergency situation is improved, the accident handling time is reduced, the timely fault handling is ensured, and the loss is reduced.
The alarm system must be able to reflect the alarm status of the device clearly in time, and in EPICS based distributed control systems, the classification of alarm type and alarm severity is achieved by setting fields of the log files of different process variables. Four alarm types are set, namely: normal state, unassigned initial value, record disconnection and numerical limit out of limit. Setting four alarm severity degrees, namely: normal, mild, more severe, severe. The corresponding relation between the four alarm types and the four alarm severity degrees is as follows: the normal state corresponds to normal, the unassigned initial value corresponds to slight, the recorded disconnection corresponds to severe, and the numerical value out-of-limit corresponds to severe.
When the equipment operates normally, the recording field of the process variable is in a normal state level, an alarm state is not triggered, and the image of the process variable alarm area set by the monitoring interface is green; when the application end receives alarm information which accords with the slight grade, the application end triggers low-frequency alarm sound, and an image of a process variable alarm area of corresponding equipment set by the monitoring interface is yellow; when the application end receives alarm information meeting the serious grade, the alarm sound of the medium frequency is triggered, and the process variable alarm area image corresponding to the monitoring interface turns orange; when the application receives alarm information meeting the severity level, high-frequency alarm sound is triggered, and an image of a process variable alarm area corresponding to the monitoring interface turns red.
And realizing hierarchical alarm monitoring of the running state of the process variable of the equipment according to alarm sounds with different frequencies triggered by alarm severity levels of different grades and images with different colors displayed.
In this embodiment, the alarm visualization is mainly presented at the application end through the color change of the panel image of each alarm area and the color change of the alarm indicator lamp of the alarm monitoring interface. The whole alarm area interface is equally divided into a plurality of parts by a plurality of rectangular panels, and each part corresponds to a process variable in a record file written by the server input/output control module. When an abnormal condition occurs in a certain process variable, the corresponding alarm severity degree is triggered according to the corresponding alarm type, and the color of the corresponding rectangular panel is changed. The panel color is changed from normal green to yellow or orange or red in an alarm state, and the color of the alarm indicator lamp is changed from green to red, so that workers are reminded of timely, accurately and pertinently making alarm treatment through the change of color, time is saved, and possible loss is reduced.
In this embodiment, the alarm information related to the alarm system includes real-time alarm parameter information displayed in an alarm monitoring interface designed at the application end, configuration information of each component, image information displayed on an alarm area panel, sound information of a sound alarm device, configuration information of a process variable record file written in an input/output control module at the server end, instruction information input by parameters of the alarm monitoring interface, and the like. The information generated along with the operation of the alarm system is stored in the middleware in real time, and the information is transmitted by the middleware at the application end and the service end according to the corresponding channel access protocol.
The alarm record information in the specific time period can be queried by clicking the variable name of the process variable mark in the alarm area panel interface. The recorded information includes information such as alarm time, alarm processing time, alarm type, alarm severity, status values of process variables, etc. The staff can be helped to find the abnormal reasons and scientifically analyze the data by inquiring the alarm information.
The beneficial effects of this embodiment are:
the embodiment provides a visual hierarchical alarm system based on EPICS, which can effectively solve the problems that the process variables of equipment monitored by the distributed control system based on the EPICS are more, abnormal condition alarms are not timely, the alarm accuracy is low, alarm information is not specific and alarm records cannot be stored and inquired in real time.
In order to solve the problems that the process variables of controlled equipment in the field of experimental physics and industrial control are more, and the variable states are not easy to monitor and alarm, the embodiment provides a hierarchical alarm monitoring system based on EPICS by introducing a hierarchical concept. Different grades are classified on the alarm types of the process variables of the controlled equipment, and the corresponding alarm severity degrees of the different grades can be caused, so that different alarm states of the alarm system are triggered, the alarm system is particularly characterized by the grading of the image colors of the area panel and the grading of the alarm sound frequency, the alarm processing efficiency is improved, and the accurate monitoring of the real-time running states of all the equipment by workers is facilitated.
In order to solve the problem that alarming is not timely and inaccurate when abnormal process variables of controlled equipment of a control system occur, according to the embodiment, alarming severity of different conditions is expressed into different colors of regional images through a visual interface, and staff is timely helped to distinguish the alarming severity through visual color change. The embodiment also can help staff to accurately distinguish the alarm severity by representing the alarm severity of different conditions as different frequencies of alarm sounds and by changing the sounds in the sense of hearing.
In order to solve the problem that after abnormal condition alarm processing occurs on process variables of controlled equipment of a control system, alarm information cannot be stored and inquired in real time, according to the embodiment, different alarm information is stored in real time according to different themes through an alarm information middleware, and alarm record information of the current and past specific time periods can be searched through an alarm monitoring interface and an alarm area panel of an application end, so that staff can be effectively helped to inquire alarm data and scientifically analyze the running state of the monitored equipment.
Firstly, classifying alarm types of process variables of controlled equipment, wherein the alarm types of different levels correspond to different alarm severity degrees; and then the staff is reminded of abnormal alarm conditions in time through the change of the image color of the panel of the alarm area visually and the sounds with different frequencies emitted by the audible alarm device in hearing. The difference in color of the panel images and the level of the alarm sound frequency correspond to the ranking of the alarm severity. The staff can primarily judge the type of alarm by looking at the color of the panel image and listening to the frequency of the alarm sound, so that timely and accurate processing can be realized during processing, the influence of abnormal conditions is reduced, and possible loss is reduced. The alarm records are stored in real time, so that the inquiry and analysis of staff are facilitated. In conclusion, the system can well solve the alarm monitoring problem of multiple objects in the field of experimental physics and industrial control, and has wide application prospect and economic benefit.
Example two
EPICS was originally a software package developed for control systems developed for accelerator and other large scale experimental facilities in combination. Currently, EPICS has been used in many laboratories in the world, widely for control of large-scale experimental facilities such as accelerators, nuclear fusion, detectors, astronomical tables, and also in some companies (e.g., boeing). In China, the control system of the accelerator is developed by using a standard model based on an EPICS architecture in a plurality of major scientific projects. For example, the positive and negative electron clash machine of Beijing high energy physics institute, shanghai synchrotron radiation light source of Shanghai institute, compound fertilizer synchrotron radiation device of Zhongkeda and heavy ion accelerator-cooling storage ring of Lanzhou near institute.
The technical scheme of the embodiment is mainly applied to monitoring and early warning of system or equipment process variables such as a vacuum system, a water cooling system, a microwave amplifier, an interlocking protection system, a power source and the like of a strong magneto-optical science center (FEL-HMF) experimental device. In this embodiment, all systems and devices of the experimental apparatus employ a distributed control system based on EPICS.
Taking a water cooling system as an example, the temperature of cooling water and the temperature of warm water need to be monitored in real time in the water cooling system, and a temperature sensor, a heating device and a refrigerating device are arranged on a controlled device at a service end. The temperature collected by the temperature sensor is analog quantity, and the temperature is displayed on an alarm monitoring interface through decimal numbers, coordinate axes and an instrument panel. The whole alarm system is controlled to be started and stopped by the switch component, the heating equipment and the refrigerating equipment are started and stopped, and the alarm indicator lamp is turned on and off, the parameter input component can set a fixed temperature, and the working states of the heating equipment and the refrigerating equipment are changed according to the set temperature, so that the temperatures of cooling water and constant-temperature water are regulated.
Firstly, the 1200PLC is configured by the Bo-Gong software, and the PID temperature control program block, the heating and refrigerating equipment switch program block, the sound alarm device switch program block and the temperature conversion program block are mainly used, and the input and output variables of each program block are set according to actual needs. For example, the real-time temperature is named as% ID30 in the variable address of the PLC, the process variable name of the record file in the corresponding IOC engineering file is named as AIID30, and the variable is the process variable which needs to be monitored in real time by an alarm system and needs to be alarmed when abnormal conditions occur. After the program block is compiled, an IOC engineering file is created, a required device driver and a database are required to be added under a corresponding file directory in the creation process, an IP address of 1200PLC is added in a starting file, and then a record file is written. The record file takes a PV quantity as a section, each section is started by record, and fields are added according to the characteristics of the PV quantity. The real-time temperature AIID30 record file example is as follows:
record(ai,"AIID30")
{
field(DTYP,"s7nodave")
field(INP,"@s7plc1200 ID30 float")
field(SCAN,"1second")
field(PREC,"2")
field(LOW,"30")
field(LSV,"MAJOR")
field(HIGH,"90")
field(HSV,"MAJOR")
}
where ai denotes that the process variable is an analog input, AIID30 is a process variable name, DTYP, INP, SCAN, PREC, LOW, HIGH, LSV and HSV are respectively a device type description field, an input output link field, a scan period field, a parameter input output precision field, upper and lower limit values fields (LOLO, LOW, HIGH and HIHI), and alarm severity fields (LLSV, LSV, HSV and HHSV) of the process variable. Each field is followed by a specific value for the setting.
The classification of alarm type grades is strictly based on the relevant fields in the record file, and the classification of alarm severity grade is based on the influence results caused by the alarm types in the actual operation process. And the numerical value out-of-limit in the alarm type level corresponds to an upper limit value field and a lower limit value field, the process variable disconnection corresponds to an input/output link field, and the non-initialized value is not set for the upper limit and the lower limit.
After the writing of the record file is completed, an alarm monitoring interface and an alarm area panel are designed for monitoring and early warning of the real-time temperature in the water cooling system. The alarm monitoring interface mainly comprises a control switch, a temperature display, a temperature setting and an alarm indicator lamp. The control switch comprises an alarm system main switch, a heating and refrigerating equipment switch and a sound alarm device switch. When the abnormal conditions such as the temperature exceeding the limit value in real time are alarmed, heating or refrigerating equipment can be opened through an alarm monitoring interface to directly perform alarm processing, and after the abnormal conditions are relieved, alarm sound can be closed through a sound alarm device switch of the alarm monitoring interface. The temperature display is displayed in real time through decimal numbers, instrument panels and coordinate axis components. The temperature is set with a parameter input assembly, and the alarm indicator lamp displays the working state of the audible alarm device and is represented by the LED lamp assembly. Because the process variable needing real-time monitoring and early warning only has one real-time temperature, the panel interface of the alarm area only has one variable. When the real-time temperature exceeds the set upper limit by 90 degrees or is lower than the set lower limit by 30 degrees, the color of the regional panel image is changed from green to red, and workers are reminded of abnormal conditions.
For the design of the alarm information middleware, the design is mainly realized by Kafka software. Five topics are first created, the process variable set as alarm PV is in the alarm information middleware as producer, and when data anomalies occur in the real-time temperature AIID30, the messages in the topic "real-time alarm information" will change. The alarm monitoring interface and the alarm area panel can be used as consumers to acquire the information in each alarm theme.
After the real-time temperature alarm system of the water cooling system is built, successfully compiled program blocks are downloaded to the PLC, IOC engineering files are started, kafka software is opened to enable alarm information middleware to work normally, an alarm monitoring interface and an alarm area panel are opened, and workers can monitor the real-time temperature of cooling water and warm water in real time. When the temperature of water is higher than the upper limit value or lower than the lower limit value, the panel of the alarm area turns red, the sound alarm device gives out high-frequency alarm sound, the alarm indicator light turns red, a worker can directly open the refrigerating or heating switch through the monitoring interface to carry out temperature regulation treatment, and the system can automatically open the refrigerating or heating equipment to carry out regulation through inputting normal temperature parameters. After the alarm is processed, the sound alarm device is manually closed through the monitoring interface. Information such as alarm type, alarm severity, alarm time and PV value can be inquired through the alarm monitoring interface and the alarm area panel.
Besides the water cooling system, the process variables related to all other systems are numerous, and the real-time monitoring and early warning of the process variables are particularly important for the stable operation of the whole experimental device. Through the visual hierarchical alarm system based on EPICS that this embodiment designed, can satisfy staff's actual demand from three aspect of monitoring early warning, alarm processing and alarm record storage inquiry of process variable.
The present application is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present application are intended to be included in the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims (10)

1. An EPICS-based visual hierarchical alarm system, comprising: the system comprises an input/output control module, an information transmission module and an application module; the input and output control module, the information transmission module and the application module are sequentially connected;
the input/output control module is used for receiving the process variable of the controlled equipment and writing the process variable into a record file;
the information transmission module is used for transmitting the process variable to the application module and storing the operation information of the visual hierarchical alarm system;
the application module is used for carrying out visual hierarchical alarm display on the alarm type of the process variable based on EPICS, and monitoring the running state of the controlled equipment in real time based on the display result.
2. The EPICS-based visual hierarchical alarm system of claim 1, wherein the input/output control module is further coupled to a device controller for configuring a block for the controlled device, the variable address names corresponding to the process variables being set based on the configuration block.
3. The EPICS-based visual hierarchical alarm system of claim 1, wherein the record file includes a device type description field, an input-output link field, a scan period field, a parameter input-output precision field, upper and lower limit values fields, an alarm severity field, and a digital quantity on-off field.
4. The EPICS-based visual hierarchical alarm system of claim 3, wherein the application module comprises: the alarm monitoring interface, the alarm area panel and the sound alarm device;
the alarm monitoring interface is used for carrying out alarm processing on the alarm type of the controlled equipment;
the alarm area panel is used for obtaining alarm types based on a plurality of fields of the record file and displaying graded color images based on the alarm types;
the sound alarm device is used for sending out alarm sounds with different frequencies based on the digital quantity on-off field.
5. The EPICS-based visual hierarchical alarm system of claim 4, wherein the alarm monitoring interface comprises: the switch assembly, the display assembly and the alarm indicator lamp;
the switch component is used for controlling the start and stop of the controlled equipment and the sound alarm device;
the display component is used for displaying monitoring parameters of the controlled equipment in real time, and the display component comprises: coordinate axis, instrument panel, decimal number;
the alarm indicator lamp is used for displaying the working state of the sound alarm device.
6. The EPICS-based visual hierarchical alarm system of claim 4, wherein the alarm monitoring interface is digitally displayed to relate the alarm monitoring interface to the process variable.
7. The EPICS-based visual hierarchical alarm system of claim 4, wherein in the alarm area panel, the alarm area panel is divided into a number of areas based on the number of process variables, and alarm images of different levels are presented based on the number of areas.
8. The EPICS-based visual hierarchical alarm system of claim 1, wherein the application module obtains alarm severity of the controlled device based on the alarm type of the process variable, and triggers alarm images of different levels based on the alarm severity while triggering alarm sounds of corresponding level frequencies.
9. The EPICS-based visual hierarchical alarm system of claim 1, wherein,
the alarm types include: normal state, unassigned initial value, record disconnection and numerical limit out of limit.
10. The EPICS-based visual hierarchical alarm system of claim 1, wherein in the information transmission module, a plurality of topics are created based on the EPICS, and operation information of the visual hierarchical alarm system is stored through the plurality of topics, respectively, wherein the operation information comprises: real-time alarm information, configuration information, instruction information, sound alarm information and image alarm information of process variables of the controlled equipment.
CN202311127403.8A 2023-09-01 2023-09-01 Visual hierarchical alarm system based on EPICS Pending CN117061579A (en)

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