JPS6352298A - Monitor/controller - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to the improvement of a supervisory control device that monitors a process, and in particular to outputting an appropriate alarm according to the rank of the alarm occurrence time. The present invention relates to a monitoring and control device.

(Prior art) In the conventional process monitoring control 1ifi, sensors are installed at important points in the process (hereinafter referred to as monitoring points) according to each monitoring purpose, and detection signals from these sensors and predetermined The system is configured to compare the detected signal from the sensor with a set level and generate an alarm when the detection signal from the sensor exceeds the set level.

However, although the above-mentioned alarm generating means provides different setting levels and ranks the monitoring points, clear rankings have not yet been made for other factors. For example, if there is a situation where a lifeguard is stationed at all times during the day, but it is unmanned at night, and you have no choice but to rely on equipment for everything, for example, it is possible to rank the daytime as light rank and the nighttime as heavy rank. Conceivable. Further, there may be a case where it is desired to rank each monitoring point by time according to the monitoring purpose.

When implementing a system like the one described above, the general idea is to prepare a timer for each monitoring point, and turn on the relay contact at a certain time to operate the required signal level source. It is conceivable to generate a predetermined setting level by causing

However, as the number of monitoring points increases, the above-mentioned alarm generation means requires a large number of timers, and as the number and rank of monitoring points increases, the number of relays, etc. increases, resulting in mechanical problems. ! Moreover, if the rank is changed after the vR station is installed, large-scale changes and modifications are unavoidable. For this reason, there were many inconveniences for the device users, and it was difficult to monitor and control the process based on appropriate judgment.

(Problems to be Solved by the Invention) Therefore, in the above-described supervisory control device, when determining the number and ranking of monitoring points, the entire device becomes cumbersome and large-scale, resulting in an increase in the number of monitoring points and There was a problem in which the rank could not be changed easily.

The present invention has been made in view of the above circumstances, and has a simple configuration that allows for easy ranking, easy change of monitoring points and ranking, and has excellent flexibility and process control. It is an object of the present invention to provide a monitoring and control device that can output a warning based on appropriate judgment regarding an abnormality.

[Structure of the Invention] (Means for Solving the Problems) A monitoring control device according to the present invention includes a mask data storage means for storing alarm mask data ranked for each unit time, and at least one monitoring point. It has an alarm data input means for monitoring the condition and inputting alarm data in case of an abnormality,
When alarm data is input from the alarm data input means, the alarm occurrence time is acquired from the timer, the ranked alarm mask data is read from the mask data storage means according to the alarm occurrence time, and the alarm mask data is read out from the mask data storage means. This determines whether alarm data is to be output based on the content.

(Operation) Therefore, by using the above means, the mask data storage means is ranked for each unit time, and
Different mask data is stored for each monitoring point, and when alarm data is input from the alarm data input means, the alarm occurrence time is obtained from the timer and the ranking can be easily determined from the alarm occurrence time, and the ranking and monitoring When the mask data read based on the points is data that should cause an alarm, it is determined that an alarm is necessary and an alarm is output.

(Example) Hereinafter, an example of the apparatus of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing the configuration of the monitoring υJlil device. The J2 device M11 has at least one monitoring sensor 12 installed at a required monitoring point of the process.
1.122. ..., 12n, and compares it with a predetermined set level or condition, determines whether there is an abnormality, and outputs alarm data.

The alarm data output from the monitoring device 11 does not have a particular alarm level, but outputs, for example, "1" which is 211I data representing a monitoring point and the meaning of alarm data. 13 is a data processing control unit (
This is an alarm data input section for inputting alarm data to the CPU (hereinafter referred to as CPU). This alarm data input section 13 has a format conversion function for setting alarm data in the bit position of the monitoring point based on the monitoring point data, if necessary. It goes without saying that the monitoring device 11 itself may have this format conversion function. 14 is a timer that generates a time signal; 15 is mask data storage means that ranks mask data for each monitoring point, such as light rank, medium rank, and heavy rank, for each unit time (day, hour, minute); It is. Reference numeral 16 denotes an alarm rank determination means using a CPU or the like, which reads the alarm occurrence time from the timer 14 when alarm data is input from the alarm data input means, determines the rank at the alarm occurrence time, and determines the rank at the alarm occurrence time. The mask data of the corresponding monitoring point is read based on the determination rank, and if the mask data is data that should cause an alarm to be output, a determination is made to issue an alarm.

17 is an alarm data output unit that converts into predetermined alarm data based on the judgment result of the alarm rank judgment means 16 and, if necessary, converts it into data corresponding to a monitoring point and outputs it;
18 receives the alarm data from the alarm data output unit 17 and lights a predetermined lamp, activates an alarm generator, stops the operation control element related to the monitoring point, or changes the control form, etc. It is an alarm output device that can be changed.

FIG. 2 is a diagram showing a hardware configuration when using, for example, a CPU. In the figure, reference numeral 21 denotes a CPIJ that performs data processing for the alarm rank determining means 16 and the like based on predetermined program data, and has a built-in separate functional element corresponding to the timer 14. From this CPU 21, a data/address bus 22 and a control line 23 are connected.
The bus 22 includes a ROM (read only memory) 24 for storing program data and a RAM for storing alarm data, temporary processing data, etc.
(Random access memory) 25 is connected. 26 is a keyboard for inputting mask data for each monitoring point and rank data for unit time; 27 is a key signal input circuit. In addition, it has an alarm data input section 13 and an alarm data output section 17 that operate in response to the υ control signal input from the control line 23 and convert the data on the bus 22 into predetermined data. Part 13
A monitoring device 11 is connected to the alarm data output section 17, and an alarm output device 18 is connected to the alarm data output section 17.

Next, we will discuss the operation of the device configured as described above in the third section.
This will be explained with reference to the figures and FIG. The monitoring device 11 has, for example, 4fI] monitoring points, and each monitoring sensor 12L, 122°123.124 (123
, 124 (not shown) is taken in and compared with a predetermined setting level or predetermined condition to determine the presence or absence of an abnormality. Here, the monitoring device 11 is the second monitoring sensor 1
When it is determined that there is an abnormality in step 22, the monitoring point data and alarm data are output. When the alarm data input unit 13 receives the monitoring point data and alarm data shown in the fourth toy from the monitoring device 11, it sets alarm data "1" in the bit position corresponding to the monitoring point as shown in the opening of the figure. C via bus 22
Input to PL121.

Here, the CPtJ21 determines whether or not alarm data has been input in step S1 after starting the operation, and if it determines that alarm data has been input from the alarm data input section 13, the alarm data is stored in a predetermined area of the RAM 25. The data is stored and the alarm generation time is acquired from the timer 14 (step 82, S3). Then, the CPU 21 executes steps 84 to S6 based on the alarm occurrence time of the timer 14.
For example, if it is a light rank, a medium rank, or a heavy rank, it is determined, for example, in the case of a medium rank, in step S7, the alarm is selected from the medium rank among the mask data ranked for each unit time shown in FIG. For example, the upper 4 bits of mask data (c) corresponding to each monitoring point corresponding to the time of occurrence are read out. Note that the lower 4 bits indicate a vacant area in anticipation of an increase in the number of monitoring points. Then, if the AND condition of the data (b) and data (c) is rlJ and rlJ in the second monitoring point bit, it is determined that alarm data is to be output, and the 11 report data is output (step S8). , "○" in the corresponding bit of mask data
If the data is set, it is determined that the alarm data is not output. Note that step S9. S10 is step 84.
If it is determined in step S86 that the rank is light or heavy, the same process as step S7 is performed to determine whether or not there is an alarm.

Therefore, according to the configuration of the embodiment as described above, mask data ranked for each unit time is stored in advance in the memory, and when an alarm occurs, the alarm occurrence time is read from the timer 14 to determine the rank. Multiple ranking decisions can be made using the multiple timers 14. Also,
Since mask data is stored in an area having bits corresponding to the number of monitoring points for each unit time, mask data can be input from the keyboard 26 as needed by securing an appropriate free area in advance. The rank and the number of monitoring points can be freely changed and increased, achieving extremely high flexibility, and improving space factor and cost performance. In addition, since specific bits corresponding to monitoring point positions are matched and the AND condition is used to determine whether or not alarm data is output, there is no need to input data with particular levels from the monitoring device, making it easy to use. Alarm data for a large number of monitoring points can be input using the signal input means.

In the above embodiment, the alarm data input unit 13 converts the data into a format according to the monitoring point position, but the monitoring point data and alarm signal may be sent directly to the CPLJ side without using such a conversion means. . In this case, the format corresponding to data (b) is performed by the CPU 21 II. Further, for convenience of explanation, the explanation has been given by dividing into light, medium, and heavy ranks, but it goes without saying that various rankings can be made depending on the form of the process, the purpose of monitoring, etc.

Also, process monitoring 1! I+ 1211 should not be interpreted in a narrow sense, but should be interpreted to include not only large-scale plants but also security aspects such as pill management and anti-theft devices. In addition, the present invention is not limited to the above embodiments, and can be implemented with various modifications.

[Effects of the Invention] As described in detail above, according to the present invention, it is possible to rank easily with a simple configuration, the number of monitoring points and ranking can be easily changed, and it is highly flexible and takes up little space. It is possible to provide a monitoring garden control device that can improve factors and cost performance, and can output a warning based on appropriate judgment regarding abnormality in the process.

[Brief explanation of the drawing]

Figures 1 to 4 are shown to explain one embodiment of the device of the present invention. Figure 1 is a block diagram showing the configuration of the device of the present invention, and Figure 2 is a hardware diagram of the device using a CPU. FIG. 3 is a diagram schematically showing the configuration, FIG. 3 is a diagram showing the operational processing procedure when using the hardware configuration shown in FIG. 2, and FIG. 4 is a schematic diagram explaining the operation of the device of the present invention. . 11... Monitoring device, 121, 122. ... Monitoring point sensor, 13... Alarm data input section, 14... Timer, 15... Mask data storage means, 16... Alarm rank determination means, 17... Alarm data output section, 18・
...W report output device.

Claims (4)

[Claims] (1) A supervisory control device that monitors a process includes a timer that generates a time signal, a mask data storage means that stores alarm mask data ranked for each unit time, and a state of at least one monitoring point. an alarm data input means for monitoring and inputting alarm data in the event of an abnormality; and when alarm data is input from the alarm data input means, a rank is determined according to the alarm occurrence time obtained from the timer, and a mask according to the rank. What is claimed is: 1. A monitoring and control device comprising: an alarm rank determining means for determining the presence or absence of an alarm output from data, and outputting an alarm according to the rank of the alarm generation time. (2) The monitoring control device according to claim 1, wherein the mask data storage means stores alarm mask data that is ranked for each unit time and corresponds to the number of monitoring points. (3) The alarm data input means converts the format according to the position of the monitoring point.
The supervisory control device described in Section 1. (4) The alarm rank determining means includes a time reading means for determining the presence or absence of input of alarm data and, if there is input of alarm data, reading the alarm occurrence time from the timer, and a time reading means for reading the alarm occurrence time from the timer; a rank determining means for determining the rank based on the rank; and an alarm data output presence/absence determination for determining whether or not the alarm data is output based on the rank determined by the rank determining means and the contents of the mask data according to the rank and the alarm generation time. A monitoring and control device according to claim 1, comprising means.