JPH0351036B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field to Which the Invention Pertains] The present invention relates to an abnormal state monitoring device for a system having movable equipment such as a transport device for transporting liquid, powder, gas, etc., for example.

[Prior art and its problems]

As shown in FIG. 1, a transport device 1 for conveying objects such as liquids, powders, gases, etc. generally includes a shipping side storage tank 2 for storing the objects to be transported, and a transport pipe 3 for transporting the objects in this storage tank 2. a pump that conveys the water to the receiving side storage tank 4 through the
It is equipped with a conveyance device 5 such as a pneumatic conveyor. In this case, one of the transport devices 5 is out of order,
It is not in normal operating condition, such as inspection and repair.
A plurality of transport devices 5 are installed to prevent the transport function of the transport device 1 from stopping when a so-called abnormal state occurs.
It is common to install In particular, when relatively highly viscous fluids such as sewage and slurry are being conveyed continuously, the conveying equipment 5 such as pumps is prone to failure and requires periodic inspection and repair. In order to ensure a suitable transport state, it is preferable to install as many transport devices 5 as possible.

By the way, this type of conveying device 1 is rarely used for simply conveying objects in the sending side storage tank 2 to the receiving side storage tank 4 by independent operation.
Normally, the objects to be transported are continuously or intermittently supplied into the shipping side storage tank 2 by, for example, another device. Therefore, as described above, when the transport function of the transport device 1 is stopped, the level of the transported objects in the sending side storage tank 2 increases and the transported objects overflow from the sending side storage tank 2. , it is necessary to monitor the level of the transported objects in the shipping tank 2. On the other hand, an increase in the level of the transported objects in the sending storage tank 2 occurs not only when the transporting function of the transporting device 1 stops, but also when the amount of supply from another device exceeds the amount transported by the transporting device 1. Therefore,
Simply monitoring the level of the objects to be transported in the shipping side storage tank 2 cannot determine whether or not the transport device 1 is abnormal.

For this reason, conventional abnormal state monitoring devices that monitor abnormal states of transport devices, as shown in FIG. The abnormality detection signal sent out is processed by the processing device 6, and the processing device 6 sends out an operation stop signal SS indicating that all the transport devices 5 have stopped operating. This operation stop signal
SS is supplied to the AND circuit 7 together with the liquid level detection signal LS of the sending side storage tank 2, and the alarm output device 8 is configured to be activated by the coincident output of both.

However, such a conventional abnormal condition monitoring device is configured to output an alarm after the transport function of the transport device 1 has stopped, so the operator who monitors the transport device 1 has no control over the transport function. Device 1
It is only when the transport function of the machine stops that an abnormality is noticed. Therefore, even if the operator detects an abnormality at this stage, there is nothing he can do other than repair the abnormal state of the entire transport device 1, and he cannot operate the transport device during this time. As a result, there was a problem that could lead to a serious accident in the operation of the transport device.

[Purpose of the invention]

This invention was made in view of the problems of the prior art. For example, the operating state of a plurality of transport devices is detected, the operating state of each transport device as a whole is grasped, and the transport function is thereby improved. It is an object of the present invention to provide an abnormal state monitoring device for a system, which can output a warning indicating the possibility of such a situation before it stops, eliminate the abnormal state at an early stage, and thereby enable continuous operation of a system such as a conveyance device. shall be.

[Key points of the invention]

The present invention is characterized in that an abnormal state monitoring device for a parallel operation system in which a plurality of transport devices are arranged so as to be able to operate in parallel includes: an operating state detection device that detects the operating state of each transport device; an alarm device; Based on the detection information of the condition detection device, the corresponding alarm level is determined by referring to the alarm level information set according to the number of operable transport devices, and the alarm level is set in advance with the determined alarm level determination value. an alarm level determination device that compares the determined alarm level with an alarm level set value and determines that the system is in an abnormal state and drives the alarm device when the determined alarm level value is equal to or higher than the alarm level set value. By this,
This system is designed to issue an early warning when an abnormal condition of one or more operating devices spreads to the entire system.

[Embodiments of the invention]

The present invention will be explained below based on the drawings.

FIG. 2 is a block diagram showing one embodiment of the present invention.

In this embodiment, in the process of transporting liquid such as sewage from the sending storage tank 2 to the receiving storage tank 4 via the transport pipe 3 using the transporting equipment 5 such as a pump, for example, five transporting equipment 5 are installed in parallel. Let's explain the case.

Each transport device 5 is provided with a detector (not shown) for detecting its operating state, and operating information is output from this detector. Here, the operation information refers to the state in which the transport device 5 is ready for operation, that is, during operation,
This is a general term for operable information that indicates a state such as preparing for startup, completion of startup preparation, or stopped, and non-operational information that represents a non-operational state, such as failure or maintenance.

The operation status information from each transport device 5 is input to the equipment status collection device 10 as an operation status detection device. For example, the equipment status collection device 10 sequentially reads the operating information of each transport device 5 at predetermined time intervals using a multiplexer or the like, and sends this operating information to the alarm priority determining device 11 and also to the alarm determining device 12. Send.

The alarm priority determination device 11 is a priority determination device 1
3, an alarm priority pattern storage device 14, an alarm level determination device 15, and an alarm level setter 16.

The priority determination device 13 functions as a device that obtains an alarm priority corresponding to this abnormal pattern from the operating state of the entire transport device 5,
By supplying operating information from the equipment status collection device 10 to one input side, the operable information is sequentially counted and the number of operable transport devices is accumulated, and this number of operable transport devices and the other It compares the stored information from the alarm priority pattern storage device 14 supplied to the input side, and sends pattern information (or numerical values) corresponding to the priorities to the alarm level determination device 15.

The alarm priority pattern storage device 14 stores the priority for alarming abnormal states and the abnormal states, and sets, for example, four types of setting information as described below. The priority here refers to the level of alarm level information that corresponds to the operating state of the movable device, that is, the degree of abnormality of the system.

(1) Transport device transport function stop warning information (priority level 1) … Number of operable transport devices: 0 (2) Transport device transport function stop warning information (priority level 2) … Number of operable transport devices: 1 unit (3) Transport Device transport function partial stop alarm information (priority level 3) ... Number of operable transport devices: 2 (4) Transport function stop alarm information for a single transport device (priority level 4) ... Number of operable transport devices: 3 or more units Note that the alarm The priority of (1) is high, and it decreases in the order of (2), (3), and (4).

The alarm level determination device 15 is the priority determination device 1
The information about the priority from 3 and the judgment information from the alarm judgment device 12 are supplied, and the information about the priority and the setting information about the priority from the alarm level setter 16 are compared and judged. result,
The alarm device 17 is activated when the priority obtained as a result of the determination from the priority determination device 13 is equal to or higher than the set priority.

The alarm level setter 16 includes a setting push button 16 for setting a priority corresponding to the information regarding the priority outputted from the alarm priority pattern storage device 14.
a, and by selectively pressing these, setting information representing the desired priority is sent to the alarm level determination device 15. Therefore, the alarm level determination device 15 determines the level of priority based on the priority information from the priority determination device 13 and the set priority information, and determines the priority of the priority information. When the priority level is equal to or higher than the priority level of the setting information set in advance, a signal is output to the alarm device 17 to activate the alarm device 17 using the determination information as a trigger.

The alarm device 17 is composed of a buzzer, a display lamp, or the like, and is driven and controlled by information from the alarm level determination device 15 to issue an alarm to the operator.

The alarm determination device 12 determines whether or not the operation information from the equipment status collection device 10 includes operation impossible information, and if the operation information is included, the alarm determination device 12 returns a logical value of “1”. ” is sent to the alarm level determination device 15 as a trigger.

Next, the action will be explained. First, an abnormality pattern with a desired priority is stored and set in the alarm priority pattern storage device 14. At the same time, the alarm level setter 16 is set to a desired priority, for example priority (2).

In this state, the operating state of each transport device 5 is detected by the equipment state collecting device 10 at predetermined time intervals. The movement information detected by this equipment status collection device 10 is
The information is sent to the priority determination device 13, which counts the operable information of each conveyance device included in the operation information and sets the number of operable conveyance devices 5. After that, the number of certified operable transport devices is compared with the four types of setting pattern information supplied from the priority pattern storage device 14, and it is determined which setting pattern information the number of operable transport devices matches. and get that priority. For example, if the number of operable vehicles is 4, this corresponds to setting information (4) and has priority 4, so the level information corresponding to this setting information, for example, expressed as 2-bit "00", is set as an alarm. It is sent to the level determination device 15. The alarm level determination device 15 compares and determines the priority level 2 setting information inputted from the alarm level setter 16 and the priority level 4 priority information from the priority determination device 13, and as a result, determines the priority information. Since the priority of the setting pattern information is lower than that of the setting pattern information, no drive signal is generated to the alarm device 17. Therefore, the alarm device 17 is maintained in an inactive state and no alarm is issued to the operator.

From this state, if three (or four) more transport devices 5 break down or become abnormal due to repair, etc., these transport devices 5 send non-operable information to the equipment status collection device 10 instead of operable information. Since the transfer information is supplied to the priority determination device 13 via the transport device 13, the number of operable transport devices counted by the priority determination device 13 is (or zero). For this reason, the priority determination device 13 outputs priority information of priority 2 (or priority 1), which is expressed as 2-bit "10" (or "11"), for example. Therefore, in the alarm level determination device 15, since the priority of the output information is higher than the priority of the setting information, the alarm drive signal is output triggered by the determination information from the alarm level determination device 15. Therefore, the alarm device 17 is activated and an alarm sound or alarm display is issued. Note that in order to change the level at which the alarm is issued, the setting value of the alarm level setter 16 may be changed.

Therefore, in this embodiment, the alarm determination device 12 determines whether or not the operation information includes operation-unable to operate information, and makes a determination indicating that there is a transport device 5 with operation-impossible information. Since the alarm level determining device 15 is triggered by the information to output an alarm drive signal, it is possible to prevent malfunctions and obtain a reliable alarm output.

In the above embodiment, a case has been described in which the priority determination device 13 counts operable information from the transport equipment 5 to calculate the number of movable transport equipment. The number of devices may be calculated by the equipment status collection device 10.

In addition, in the above embodiment, the case where the operation information is composed of two types of information, operable information and operation impossible information, has been described, but the abnormal state of the transport equipment 5 can be defined as, for example, "serious abnormality," By detecting patterns in three stages (medium abnormality, light abnormality) and changing the settings of the priority determination device 13 to multiple types of abnormality patterns that combine each pattern, a more accurate abnormality status monitoring device can be achieved. can be provided. Furthermore, the alarm determination device 12 may be omitted and the drive signal may be output every time a comparative determination result is obtained from the alarm level determination device 15.

In some cases, the alarm level determination device 15
It is also possible to omit this and directly drive the alarm output device 17 based on the priority information from the priority determination device 13 to generate different alarm outputs depending on the abnormal state.

Furthermore, although the above embodiments have been mainly described with reference to the conveyance equipment in the conveyance apparatus, the present invention is not limited to the conveyance apparatus of such a conveyance apparatus, and the present invention is not limited to the conveyance apparatus of such a conveyance apparatus, but is applicable to systems including a plurality of movable apparatuses. , and can be applied to plants in general that operate these to perform predetermined processing.

〔Effect of the invention〕

As described above, according to the present invention, in an abnormal state monitoring device for a parallel operation system in which a plurality of transport devices are arranged to be able to operate in parallel, an operating state detection device that detects the operating state of each transport device; The alarm level is determined by referring to the alarm level information that is set according to the number of transport devices that can be operated based on the detection information of the alarm device and the operating state detection device, and the determined alarm level is determined. A determined value is compared with a preset alarm level set value, and when the determined alarm level value is equal to or higher than the alarm level set value, the alarm level determines that the system is in an abnormal state and drives the alarm device. An abnormal state monitoring device for a parallel system was constructed by including a determination device. For this reason, the abnormal state of the entire plurality of transport devices is determined by an alarm priority determination device, and it is determined whether the abnormal state that occurs in each transport device will affect the system to stop operating. It becomes possible to issue a warning before the system stops, thereby avoiding system stoppage, and as a result, the system can be operated and managed safely and systematically.

Further, since the alarm priority determination device can arbitrarily change the priority of the alarm that drives the alarm device, the alarm can be issued in the optimum state for the operating state of the system.

Furthermore, it is possible to issue an effective warning simply by monitoring the operational status of the movable equipment of the system.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a conventional example, and FIG. 2 is a block diagram showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Transport device, 5...Transfer device, 10...Operating state collection device, 11...Alarm priority determination device, 12...Alarm determination device, 13...Priority determination device, 14...Alarm priority pattern storage device, 15...Alarm Level determination device, 16...Alarm level setter, 17...Alarm device.

Claims (1)

[Claims] 1. In an abnormal state monitoring device for a parallel operation system in which multiple transport devices are arranged to be able to operate in parallel,
Refers to an operating state detection device that detects the operating state of each transport device, an alarm device, and alarm level information that is set according to the number of operable transport devices based on the detection information of the operating state detection device. determine the level of the corresponding alarm, compare the determined alarm level determination value with a preset alarm level set value, and when the alarm level determination value is equal to or higher than the alarm level set value, An abnormal state monitoring device for a parallel operation system, comprising: an alarm level determination device that drives the alarm device by determining that the system is in an abnormal state.