JPS6389173A - Electric control system of building control system - 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 [Field of Industrial Application] The present invention relates to a building management system, and more particularly to a power restoration control method for optimally outputting output to equipment when power is restored.

[Conventional technology]

The conventional method, as described in Japanese Unexamined Patent Publication No. 60-247723, is a method in which the processing after power restoration is determined only according to the power outage time. That is, focusing on the power outage time, if it is determined that there is no problem with the system due to a short power outage, processing is continued, and in case of a long power outage, initial clearing or the like is performed.

[Problem that the invention seeks to solve]

As with the conventional technology above, processing is selected based on power outage time.

There were the following problems with the process.

(1) When the power is restored, the system determines what to do in advance, such as re-outputting equipment registered in schedule control according to the scheduled time, or returning the equipment to the state it was in before the power outage. Therefore, the way the power is output to the installed W equipment upon power restoration was not necessarily appropriate.

(2) During maintenance, etc., when the valve was cut off by individual shaking, regeneration force was applied to the schedule M control due to an instantaneous power outage, and the pipe was turned on again, which could be dangerous for maintenance workers.

(3) When a power outage lasts for a long time, performing schedule control regeneration or processing to return to the state before the power outage does not necessarily result in output to equipment in accordance with the time of power restoration.

An object of the present invention is to solve the problems of the above-mentioned prior art and to provide a power restoration control method that brings equipment to the optimal state at that time when power is restored.

[Means for solving problems]

The above purpose is to provide a reasoning unit that determines the conditions for output to equipment at that point in time when power is restored, based on multiple input signal conditions that are input to the system before power outage and at the time of power restoration, and to perform control. This is achieved by

[Effect]

According to the present invention, the inference unit that determines the conditions for output to equipment at the time of power restoration operates as follows.

First, based on the input signal taken in by the input control unit at the time of power restoration and the buffered input signal state before the power outage,
A condition determination unit determines output conditions to the equipment according to the priority level of the input signal.

Next, based on the results determined by the condition determination section, the arithmetic/calculation section determines the optimal state of the equipment at that point in time when power is restored, and the output is actually output to the equipment through the output control section. As a result, optimal power restoration control is achieved.

〔Example〕

) Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 9.

FIG. 1 is an overall configuration diagram of a building management system, and it is assumed that the power recovery control inference section 8 of the present invention is provided within the central processing unit 1. As shown in FIG. The central processing unit 1 is connected to various types of equipment 7 via a remote station 6, and their status is displayed on a status display device 2, CRT 3. It is configured so that it can be monitored by input/output devices such as a printer 4 and an F/D device 5.

FIG. 2 is a diagram specifically showing the power recovery control inference section 8, which is controlled by the main control section 9 together with the input control section 10 and the output control section 13.

The operation of the power recovery control inference unit 8 will be explained in conjunction with the flowchart in FIG.

At the time of power restoration, the necessary input signals are taken in from the input control unit 10, and at the same time, the input signals before the power outage buffered in the storage device in the main control unit 9 are also taken in (step O1).
A priority level is set in advance for each input signal. Here, the types and priority levels of the signals are as shown in FIG. According to this signal priority level, the condition determination unit 11 performs the processing of flowcharts h5tep 102 to 5top 108.

The processing from 5step 102 to 5step 108 is as follows.

First, determine the presence/absence of input of the disaster prevention-related double amount, which is the most important signal among the input signals (step 102), and then determine the presence/absence of individual operation input only if the disaster prevention-related signal is not input.
It is determined whether the schedule control is registered or not (step O4), and thereafter it is similarly determined whether the schedule control is registered or not.

The results obtained by the above condition determination (steps 103, 105, 107, and 108) are taken into consideration together with the current time of the system in the calculation unit 12, and the optimal state of the equipment at the current time is determined. Of these, the disaster prevention input waiting process (step
l O3), individual operation input waiting processing (gtepl O5)
), schedule registration processing (step 107), and equipment state processing (step 108) will be described in detail later with reference to FIGS. 5 to 8.

Finally, the output control unit 13 outputs to the actual equipment (step 109).

The signal types and control priority levels shown in FIG.
It becomes effective only when all the input conditions become transition conditions to the lower level.

In order to explain the present invention more specifically, the examples shown in FIGS. 5 to 8 will be used.

Here, (a) in Figures 5 to 8 shows the timing of power outage and restoration and the input/output of each input signal (disaster prevention related input signal, individual operation input, schedule device and time input, am device status input signal) The relationship is shown in a time chart,
The table (b) shows the output signal state in (a). Here, the output signal state refers to the state to which the power recovery control returns the equipment, and in this example, for any input signal, it means the state during disaster prevention input, the state before the power outage. It is assumed that there are only three states: , schedule control restart state (which can be considered as initial clear). Note that 0 indicates that the control output is possible, x indicates that the control output is not possible, and - indicates that there is no relation.

The explanation for each input signal is as follows.

(1) Disaster prevention-related input signals (explained with reference to FIG. 5) When looking at the relationship between the timing of power failure and restoration and the disaster prevention signal input as shown in FIG. 5, the following cases are possible.

In case of ■, a disaster prevention related signal is input during a power outage, and is reset when the power is restored. Therefore, the state of the equipment is not returned to the state in which disaster prevention input is in progress, and since disaster prevention-related signals are input before the power outage, the state before the power outage is considered to be the state in which disaster prevention input is in progress. Instead of returning to the state, it returns to the schedule control restart state.

■Contrary to ■, there are no disaster prevention signals during a power outage.

If it has been input at the time of power restoration, the input of disaster prevention-related signals is at the highest priority level, so the state is returned to the state in which disaster prevention input is in progress.

In case of ■, there is no input of disaster prevention related signals either during a power outage or when the power is restored, so control is performed for each device according to the priority level of the input signal shown in Figure 3.Therefore, in case of ■, the device returns to the state before the power outage. Select one of the following: or return to scheduled restart status.

(2) Individual operation input (explained with reference to FIG. 6) As shown in FIG. 6, when looking at the relationship between the timing of power failure and restoration and the individual operation input, cases ① to ③ can be considered.

For ■, there was no individual operation input before the power outage, so of course there will be no input when the power is restored. Since the transition to this control level occurs only when there is no input of disaster prevention-related signals, the state of equipment and equipment at the time of power restoration will be the state before the power outage or the state of scheduled restart according to the priority level determined by the input signal shown in Figure 3. shall be returned to.

In case (2), since there is an individual operation input when the power is restored, the state before the power outage is returned to the state before the power outage according to the priority level based on the input signal shown in FIG.

(3) Schedule device and time input (explained with reference to FIG. 7) As shown in FIG. 7, when looking at the relationship between the timing of power failure and restoration and the schedule 0N10FF time, cases ① to ② are possible.

In case of ■, the time of power outage is within the scheduled time and the time of power restoration is outside of the scheduled time, so when the equipment is returned to the state before the power outage, it will have passed the ON10 F F time of the schedule.
It will differ from the actual state you want to use. Therefore, the state of the equipment shall be returned to the state of schedule control restart.

Regarding (2), the conditions at the time of power outage and power restoration are reversed, but the processing is the same as (2).

As shown in ■ and ■, when there is no change during the power outage or power restoration, whether it is within the scheduled time or outside the scheduled time, the state will be returned to the state before the power outage or the state of schedule control restart according to the priority level shown in Figure 3. shall be returned.

(4) Equipment status input signal (explanation according to Figure 8) No. 8
As shown in the figure, when looking at the relationship between the timing of power outage and restoration and the change in status signals of equipment, cases ① to ② can be considered.

Items (2) and (2) are 0N10FF locally (on the field side) because the state of the equipment changes during a power outage and when the power is restored. Therefore, when the power is restored, the state before the power outage or schedule control restart state shall be restored.

According to this embodiment, priority levels are set for input signals, and the equipment is restored by taking into consideration the relationship between the timing of power outage and restoration and the input signal. This has the effect of changing the state to suit the purpose.

In this embodiment, the output states in the recovery control are set to three: the state during disaster prevention input, the state before power outage, and the state of schedule control restart (initial clear), but the output state is not limited to these. It is also possible to continue a state in which no output is produced depending on the situation. Furthermore, the input signal state is not limited to this embodiment.

〔Effect of the invention〕

According to the present invention, it is possible to organically process a plurality of input signals that are input to the building management system at the time of power restoration, so there is an effect that the optimum state of the equipment can be achieved at the time of power restoration (time). .

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of the present invention, FIG. 2 is a schematic block diagram of the present invention, FIG. 3 is a diagram showing input signal types and priority levels, FIG. 4 is a schematic flowchart of the present invention, and FIG. 8 are detailed explanatory diagrams for each input signal. 1... Central processing unit, 8... Power recovery control inference unit, 10
...Input control section, 11...Condition judgment section, 12...
Arithmetic section. 13... Output control section.

Claims (1)

[Scope of Claims] 1. In a building management system equipped with a central processing unit that monitors and controls various equipment in a building, based on multiple input information before a power outage and at the time of power restoration, A power recovery control method for a building management system, characterized in that an inference section is provided to determine the state in which the facility equipment should operate based on predetermined conditions, and an output is provided to the facility equipment based on the result of the inference section. 2. A power recovery control method for a building management system according to claim 1, characterized in that a state in which to operate is determined by setting a disaster prevention-related input signal as the highest priority level among the input information.