JPS61156408A - Monitor method of operating state - Google Patents

Abstract

PURPOSE:To ignore the ON/OFF states caused by the local control of an object device to prevent the transmission of an undesired alarm and to reduce the load of an operator, by monitoring the operating state just for a fixed period of time after the ON/OFF control is over and inhibiting the monitor in other periods. CONSTITUTION:A CPU1 executes an instruction in a ROM2 and performs the control while giving accesses to a RAM3 and an EXM8 with the desired data. Then the CPU1 performs the control operation, decision, etc. according to the data obtained via I/F41, 43 and 44 and delivers the results of these operation, decision, etc. The output data Do is given to a subject device as a command and the signal showing the operating state of the subject device is obtained as the input data Di. This state is sent to a TE7 for control and monitor of the subject device. The ON and OFF commands are given at time points t1 and t2 respectively and then ignored for the answer periods T01 and T02 in terms of monitor. The monitor is carried out just for fixed periods T1 and T2 following said periods T01 and T02.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for monitoring the operating status of various controlled equipment such as air conditioning equipment.

[Conventional technology]

For example, in an air conditioning control device, on and off commands are given to various air conditioners to control their operating status, and the equipment to be controlled (hereinafter referred to as target equipment) is controlled according to the on and off commands. The device monitors whether the vehicle is actually running or stopped within a certain period of time, and issues an alarm if the given command differs from the actual operating situation.

[Problem that the invention seeks to solve]

However, some of the target devices are automatically turned on and off by local control. For example, in a refrigerator, defrosting control is performed locally and even if an on command is given, In this case, the air conditioning control system will determine the difference between the command and the operating status and issue an alarm. Warnings are ignored according to the display, and if a local activation occurs even after an off command is given, the same thing will happen, giving unnecessary warnings to the staff and preventing the staff from making redundant decisions. This has led to problems such as an increased burden on staff.

[Means for solving problems]

In order to solve the above-mentioned problem, the present invention is constructed by the following means.

That is, in the above-described monitoring method, the operating status of the controlled device is monitored only for a certain period of time after the on-control and after the off-control, respectively.

[Effect]

Therefore, if the operating status is checked for a certain period of time after each device is turned on or off, monitoring will not be performed after that, and turning on or turning off by local control of the target device is irrelevant for monitoring purposes. Become.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to figures showing examples.

Figure 2 is a block diagram of the control device, centered on a processor such as a microprocessor (hereinafter referred to as CPU) 1, a fixed memory (hereinafter referred to as ROM) 2, and a variable memory (hereinafter referred to as RA).
M) 3 and interface (hereinafter referred to as I/F) 4
+ ~ 45 are placed around the periphery, and these are connected to the bus bar. Input data Di from the target equipment and various sensors is given through β 41, and input data Di from the target equipment and various sensors is provided through various output data D0 are sent out, while I24゛・4
A transmission path 6 is connected to 3, and various data are transmitted and received via this.

On the other hand, terminal equipment (hereinafter referred to as TE) T such as a keyboard, a cathode ray tube display, and a printer are connected to the I/F 44, and operations and displays are performed using these.

Further, an external memory (hereinafter referred to as EXM) 8 such as a floppy disk is connected to the memory 45, and data thereon is accessed.

Here, the CPU 1 executes instructions in the ROMZ and performs control operations while accessing necessary data to the RAM 3 and EXM 8.
, 43, 44, control calculations, judgments, etc. are performed, and the results are sent out via I/Fs 42°4s, 44.

Therefore, output data D0 is given as a command to the target device (not shown in the figure), and a signal indicating the operating status of this device is accepted as input data D1.
If sent to E7, the target device will be controlled and monitored.

FIG. 3 is a timing diagram showing the control and monitoring situation, in which an on command is issued at time t1, an off command is issued at time t2, and at time t1 and t
2 to response time TOI I The period of TO2 shall be ignored for monitoring purposes, taking into account the operating time of the electromagnetic switch interposed in the middle and the response delay time of the target equipment. Monitoring will only be carried out during this period.

Therefore, during the other periods T3 and T4, even if the target equipment independently turns on and off under local control, the control device in Figure 2 does not respond to this and issues unnecessary alarms via TE7. It will not be displayed.

FIG. 1 is a 70-chart of the monitoring operation by the CPU 1. If "Send ON command?" 101 is Y (YES), the T5T5 timer is set to 5 at the predetermined time shown in FIG. ) '102 and regulate the same response time TO+' TO+Timer Start"10
After doing step 3, @TO + timer time up?
”104, while checking N(N
Send 1 off command assuming o)? "Regulate the predetermined time T6 in FIG. 3 according to 111 becoming Y""T6T
6 timer start" 112 and also regulates the same response time TO2.
After performing step 3, check "TO2 timer time up?" 114 and proceed to step 104 or 1.
If 14 becomes Y, @TearT6 timer time up? "1 monitoring while 121 is N" 122 is performed, and steps 101 and subsequent steps are repeated via the main routine, and if step 121 is Y, step 122 is not executed.

Note that each timer is configured using software in the CPU, and 'rsl'r6 is the period TOI in Figure 3.
The time is set including +TO2.

However, the response time T'ol + 762 and the constant time T1°T2 can be determined depending on the target equipment and monitoring conditions, and the same result can be obtained even if the configuration shown in Fig. 2 is made up of a dedicated logic circuit. Various modifications are possible, such as each timer may be replaced with a timer circuit.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, monitoring is performed only for a certain period of time after on and off control is performed, and monitoring is not performed for any other period. On and off controls are ignored, unnecessary alarms are not sent out, and the burden on staff is reduced.The response status is reliably monitored through on and off controls, and various target equipment can be monitored. Remarkable effects can be obtained.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which FIG. 1 is a flowchart of a monitoring operation, FIG. 2 is a block diagram of a control device, and FIG. 3 is a timing diagram of control and monitoring situations. 1...crty (processor), 2...RO
M (fixed memory), 3...RAM (variable memory)
, T...TE (terminal equipment), Dl...input data, Do- number, output data, T + + T2.
...for a certain period of time.

Claims (1)

[Claims] In the method of monitoring the operating status of the controlled device after performing on control and after performing off control on the controlled device, respectively, after performing the on control and after performing the off control, An operating status monitoring method comprising monitoring the operating status of each of the controlled devices only for a certain period of time after each control is performed.