CN107966974A - A kind of system control method based on operational mode and sequential - Google Patents

Abstract

The invention discloses a system control method based on operation mode and time sequence, which includes the following steps: step 1, constructing the operation mode of the controlled equipment or system in the monitoring background; step 2, organizing the operation mode according to time sequence; step 3, When the system time matches the time of the organization, the monitoring background analyzes and judges the constructed operation mode and sends control instructions to each controlled object respectively; step 4, the monitoring background obtains the execution result of the control instruction, judges the execution status, and returns if there is no abnormality Execute step three until all sequences are executed. This control method can facilitate the configuration of the system operation mode during the system operation process, and the operation is simple and the workload is small.

Description

A System Control Method Based on Operation Mode and Sequence

technical field

The invention belongs to the field of industrial process control, and in particular relates to a method for forming an operation sequence according to time and equipment operation status, so as to realize the control of equipment groups or systems.

Background technique

In the production process of enterprises, it is often necessary to control the equipment in production according to time sequence. For example, the lighting system in intelligent buildings usually turns on the lights at a fixed time in the morning according to the work plan, and turns off the lights at a fixed time in the evening after get off work. There are many lighting switches. In the case of manual operation, it is cumbersome and error-prone. In order to liberate people, a sequence control logic is usually configured with a programmable controller to realize a time sequence control. Sequential control logic can indeed realize automatic start, automatic stop and adjustment of equipment in time series, but the execution logic is generally solidified after debugging, and logic maintenance after the system is put into operation requires many operations and risks: 1. First, if the programmable controller does not support the function of updating the logic online, the new logic will take effect and the multiple updates will require multiple restarts of the controller, which will inevitably affect the running system; second, the newly added logic needs to be retested, and for a For a large system, the workload of complete testing from beginning to end is too large, and the correctness of the newly added logic cannot be guaranteed without testing.

Contents of the invention

The purpose of the present invention is to provide a system control method based on operation mode and time sequence, which can conveniently configure the system operation mode during system operation, and has simple operation and low workload.

In order to achieve the above object, the solution of the present invention is:

A system control method based on operating modes and timing, comprising the steps of:

Step 1: Construct the operating mode of the controlled device or system in the monitoring background;

Step 2, organize the operation modes in time series;

Step 3: When the system time matches the organization time, the monitoring background analyzes and judges the built operation mode and then issues control instructions to each controlled object;

Step 4: monitor the background to obtain the execution result of the control command, judge the execution status, and return to step 3 if there is no abnormality, until all sequences are executed.

In the above step 1, the operation mode of the equipment or system includes the start and stop of the equipment or system, as well as its opening, closing and intermediate positions.

In the above step 1, only the equipment whose state has changed in the operation mode needs to be configured, and the equipment whose operation status is the same as the previous time and the current time is ignored, and its controlled objects are some equipment or subsystems in the system.

In the above step 2, the time series is organized in ascending order of year, month, day, hour, minute, and second, and the year, month, day, hour, and minute can be configured by default in sequence. The time loop executes.

In the above operation mode, the controlled object is configured with an execution timeout limit. When the execution result is not correct within the configured time after the command is issued, a timeout fault will be reported, and the fault information will be recorded for future reference.

When the above-mentioned timeout failure is executed, the user can choose to abort the time series or continue to execute the next time series according to the mode preset by the user.

After adopting the above-mentioned scheme, the present invention can freely modify the operation mode of the equipment in the system after the control system is put into operation, and it is not necessary to conduct a comprehensive test on the system; and multiple revisions.

Description of drawings

Fig. 1 is the application schematic diagram of the present invention;

Fig. 2 is a flow chart of monitoring the background operation mode and timing control;

Fig. 3 is a flow chart of monitoring background operation mode and sequence control execution;

Fig. 4 is a schematic diagram of monitoring background operation mode and timing control online update.

Detailed ways

The present invention provides a system control method based on the operation mode and sequence. In the control system, the following steps are adopted to realize the control of the controlled equipment or system:

Step 1: Construct the operating mode of the controlled device or system in the monitoring background;

Wherein, the operating mode of the equipment or system includes starting and stopping of the equipment or system, as well as opening, closing and intermediate positions thereof. In the operation mode, only the equipment whose status changes needs to be configured, and the equipment whose operation status is the same as the current time at the previous time is ignored, and its controlled object can be some equipment or subsystems in the system.

Step 2, organize the operation modes in time series;

Among them, the time series is organized in ascending order of year, month, day, hour, minute, and second, and the year, month, day, hour, and minute can be configured by default in turn. If the default is used, it means that the time series is executed according to the time cycle below the default , such as the default month, the same day, hour, minute, and second will be executed every month.

Step 3: When the system time matches the organization time, the monitoring background analyzes and judges the built operation mode and then issues control instructions to each controlled object;

Step 4: monitor the background to obtain the execution result of the control command, judge the execution status, and return to step 3 if there is no abnormality, until all sequences are executed.

When the present invention is working, the controlled object in the operation mode is configured with an execution timeout limit. When the instruction is issued and the execution result is not correctly returned within the configured time, a timeout fault is reported, and the fault information is recorded for future reference. Set the mode to choose whether to abort the time series or continue to execute the next time series. Moreover, the system operation mode and time series can be modified during operation, and the modification will not affect the operation of the existing system.

Shown in Fig. 1 is a kind of typical application of the present invention, and this method is applied to the monitoring system shown in the figure, and wherein according to the operation mode configuration of time series in the monitoring background, after the configuration is analyzed by the monitoring background, each control command is issued to For the corresponding controller, after the controller is executed, the execution status will be fed back to the monitoring background, so as to complete the complete function.

The invention realizes the system control based on the operation mode and time sequence by analyzing the operation mode of the system and utilizing computer technology. In order to make the above content easier to understand, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

The control implementation process based on the operation mode and time sequence is shown in Figure 2. Step 201 analyzes, summarizes and summarizes the operation modes in the system, and records the equipment operation state transition points at the same time; The state transition points are connected in series in chronological order; configure the operating modes organized in time series in the monitoring background, see step 203, this process does not configure devices whose status does not change, and needs to configure the timeout time of the current mode, the command signal of each device, and the state Return signal and fault processing mode. The fault processing mode includes two options: continue and stop. The default is stop. After the configuration is completed, verify whether the configuration is valid, including whether the time is accurate, whether the controlled device is in the system monitoring list, and control commands and whether the status is valid, etc.; finally, the checked sequence is put into operation through step 204 .

The execution flow of monitoring the background running mode and timing control is shown in Figure 3. First, read the current mode entry information in the configured running mode sequence through step 301, including the time and the device information of the state transition in the entry. The device information includes the device's Control instructions, status semaphores, and the timeout time for the execution of this entry, and also obtain the current system running time. In order to ensure reliable execution, it is necessary to synchronize the time of the control system; in step 302, it is judged whether the current time of the system is equal to the time configured by the entry , if the entry time has a default, then ignore the judgment of the default time; according to the judgment result of step 302, if the time does not match, then go to step 301 after a small delay and continue to judge until the time meets the requirements; when the time judgment condition of step 302 After being satisfied, step 303 issues corresponding control instructions according to all configured device states in the current entry, and the control instructions include start commands, stop commands, and analog quantity adjustment instructions for devices or subsystems; in step 304, the completed steps The execution result of 303 is judged, and timing is started when entering step 304, and when the execution feedback surface execution of all the control commands sent within the timing time is all correct, then the current timing is ended, and step 305 is forwarded to; step 305 first records the execution of the current item Result information, and move the current entry down by one, and then return to step 301 to continue execution. In this step, if this entry is the last entry of the entire time series, then return to the first entry when moving down one entry; when judging in step 304, if If the waiting state return time exceeds the configured time and any device fails to return correctly, enter step 306 to judge the fault mode and give an alarm; the fault mode is a pre-configured mode, which needs to be configured by the user when monitoring the background operation mode and timing control. Step 306 is executed directly according to the previous configuration results. If the configuration continues to be executed, then proceed to step 305 for execution. If the configuration is in aborted mode, then proceed to step 307 for execution. Step 307 is to perform exception handling. This step first records the execution information of the current step, Then it automatically exits the function operation and gives an alarm. The function operation needs to be re-entered by the user after troubleshooting.

When the function needs to be modified during the process of putting into operation, the implementation process is shown in Figure 4. Step 401 enters the monitoring background with maintenance functions, and opens the configuration software and the current project; step 402 follows the normal operation process of steps 201, 202 and 203 Complete the modification of the new time and operating mode and verify that it is valid; Step 403 put the modified configuration into online update. If it is detected that this function is not enabled, it will be put into operation directly. After step 305, the current execution sequence is temporarily suspended, and the new configuration is updated. This time, the entry to be executed in the new configuration that is closest to the current system time needs to be found according to the current system time, and the updated current entry is changed to this The entry is executed; the last step 404 is to record the execution result, and exit the update, so far the online update function is completed.

The above embodiments are only to illustrate the technical ideas of the present invention, and can not limit the protection scope of the present invention with this. All technical ideas proposed in accordance with the present invention, any changes made on the basis of technical solutions, all fall within the protection scope of the present invention. Inside.

Claims (6)

1. A system control method based on operating mode and sequence, characterized in that it comprises the steps: Step 1: Construct the operating mode of the controlled device or system in the monitoring background; Step 2, organize the operation modes in time series; Step 3: When the system time matches the organization time, the monitoring background analyzes and judges the built operation mode and then issues control instructions to each controlled object; Step 4: monitor the background to obtain the execution result of the control command, judge the execution status, and return to step 3 if there is no abnormality, until all sequences are executed. 2. A system control method based on operating mode and sequence according to claim 1, characterized in that: in said step 1, the operating mode of the device or system includes starting, stopping, and opening of the device or system , OFF and intermediate positions. 3. A system control method based on operating mode and sequence as claimed in claim 1, characterized in that: in the first step, only the equipment whose state changes in the operating mode needs to be configured, ignoring that the previous time is the same as the current time The equipment in the running state, its controlled object is part of the equipment or subsystem in the system. 4. A system control method based on operating mode and time sequence as claimed in claim 1, characterized in that: in said step 2, the time sequence is organized in ascending order of year, month, day, hour, minute, and second, and the year , month, day, hour, and minute can be configured by default in turn. If the default is used, it means that the time series will be executed cyclically according to the time below the default. 5. A system control method based on operating mode and timing as claimed in claim 1, characterized in that: in the operating mode, the controlled object is configured to execute a timeout limit, and when the command is issued, the result is executed within the configured time If the fault is not returned correctly, a timeout fault will be reported, and the fault information will be recorded for future reference. 6. A system control method based on operating mode and time sequence as claimed in claim 5, characterized in that: when the timeout fault is executed, the user can choose to abort the time sequence according to the mode preset by the user, or continue to execute the next time sequence .