JPH0315774B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an operating condition change factor determination method that can immediately determine the cause of a driving condition change and provide it as effective information in a computer-based equipment monitoring system.

Conventional monitoring systems only monitor changes in driving conditions themselves, and the cause of the change is determined by humans, which takes time.

For this reason, the present invention improves the functionality of the condition monitoring system by immediately determining the cause of the change in operating condition of a large number of monitored equipment by comparing the cause with a pattern table.

Hereinafter, the present invention will be explained based on examples.

FIG. 1 is a schematic process flowchart according to the present invention. Generally, in equipment monitoring systems, a slave station address, a word address, and a bit address are assigned to the bit information that represents the status of each equipment, and the contact information for each word is sent from the sensor to the center in the order of these addresses. Transmitted repeatedly. The center then compares the information transmitted last time with the information transmitted this time to detect whether the operating state has changed. When a change in operating status occurs, such as switching from active equipment to standby equipment, or from operation to stoppage and vice versa, the following shall be carried out for each type of equipment (or type of operating status) as shown in Figure 2a. Find the pattern table for the judgment you prepared. Next, check the state of the flag in the table that stores the state of each contact as shown in FIG. If the flag is 1, it is determined that there is a cause (in this example, it is a current failure). Then, the cause code determined to be a cause is stored in another area of the memory. After performing the above for all the factor codes, the separately stored factor codes are converted into codes and output to a printer, display, etc.

Here, as shown in FIG. 2B, if additional information such as repair work, equipment function test, etc. is available for each cause code on the table, more detailed judgments can be made. This additional information becomes effective when there is another factor that regulates the cause of failure. For example, taking the example of a wireless device, if the cause of the state change is a power failure, it becomes clear whether the power was turned off for repair work or whether there was a failure in the power supply itself. (In this example, due to repair work) Furthermore,
This additional information is input from a display keyboard or the like before starting work such as repair. Figure 3 shows
FIG. 2 is a system block diagram that realizes the above. In the figure, SC is the monitored equipment, TC is the remote monitoring and control device, CPU is the central processing unit, CRT is the display device, MEM is the memory, and PRT is the printer.

The remote monitoring control device TC inputs the status of each monitoring point of the monitored equipment SC as contact information,
Monitor its changes. Specifically, for each contact information, address (word address) is given in units of 12 contacts.
is given, and an address (bit address) is also given to each contact. and,
When a change in state is detected, the word address, bit address, and state value after the change are transmitted to the central processing unit CPU.
The central processing unit CPU stores memory corresponding to the transmitted address (words and bits).
Comparison is made with the flag state in MEM, and if it is determined that a change in state has occurred, the flag in memory MEM is rewritten to the state after the change. After that, if the change in condition is a change in driving condition, follow the flow shown in Figure 1.
Check the flag status in the memory MEM corresponding to each factor. At this time, the state of the flag of the additional information is also checked as required, and the cause is also determined and displayed on the display CRT or printed on the printer PRT.

As described above, according to the present invention, when a state changes, the cause is outputted, so that it is easier to determine the cause than in the past.

[Brief explanation of the drawing]

FIG. 1 is a processing flowchart according to the present invention, FIG. 2a is a pattern table, FIG. 2b is a diagram showing an example of a status and supplementary information table, and FIG. 3 is a system block diagram according to the present invention. In the figure, SC is the monitored equipment, TC is the remote monitoring and control device, CPU is the central processing unit, MEM is the memory, CRT is the display, and PRT is the printer.

Claims (1)

[Scope of Claims] 1. In a center that captures and monitors the status of equipment as binary information, the center includes: a first table storing equipment codes for determination prepared for each type of equipment; A second table is provided that stores flags indicating the operating status, corresponding to the type of operation, and the information transmitted last time and the information transmitted this time are compared to determine whether the operating status has changed. If a change in operating status occurs, search for the equipment type and equipment code in the first table, check the state of the flag indicating the operating status in the second table corresponding to the equipment code, and change the flag. If the factor is 1, it is determined that a factor exists, a factor code determined to be a factor is stored in a memory, and the stored factor code is output to a display means.