JP3668482B2 - Control equipment - Google Patents

Description

  The present invention relates to a control device that controls each of the controlled parts constituting the device.

  In a control device such as a water heater, a number corresponding to each abnormal state is stored in advance in the external nonvolatile memory element, and when an abnormal state occurs, the number is assigned, and during maintenance, a failure is determined based on that number. It is supposed to be repaired.

  The history of the abnormal state is stored in order from the past, and when the storage capacity becomes full, the oldest number is deleted and the new number of this time is stored.

  However, as described above, if priority is set only for the history of time, if a minor problem continues several times and erases the past abnormal state, it is a serious abnormal state, It will be erased.

  For example, abnormality relating to the temperature of hot water supply, which is the most important item of a water heater, is a serious problem. Minor abnormalities include the fact that the bath tub has been removed and the hot water cannot be filled. The problem at the time of maintenance is the problem of hot water supply temperature abnormality, which is very high as a priority, but with a method that only records in time series, memory of an important abnormal state of hot water supply temperature abnormality is stored. There was a possibility of disappearing.

When the memory of a serious abnormal state is erased, the corresponding repair is not performed, so that accurate maintenance cannot be performed and the reliability of the maintenance is lowered.
JP 2000-314554 A

  The present invention has been proposed in view of the above, and an object of the present invention is to provide a control device that can perform accurate maintenance and can improve the reliability of maintenance.

In order to achieve the above object, the invention according to claim 1 is a control device that controls each of the controlled units that constitute the control device, and a driving state monitoring that monitors the driving state of each of the controlled units. Means for determining whether or not the controlled part is normal based on a signal from the driving state monitoring means, and the controlled part is abnormal by the abnormality determining means. When it is determined that the abnormality is, the mode determination unit that determines which of the plurality of previously registered abnormal modes corresponds, and the mode information attached to the abnormal mode determined by the mode determination unit In addition to the previous mode information, the above-mentioned mode information is stored in a predetermined storage area composed of an external non-volatile storage element , and when the current mode information is stored, the storage capacity is exceeded. Is According to the priority order that is previously registered, mode information processing means for performing processing for the low mode information from the mode information priority up to the previous erase from a predetermined storage area, then stores the current mode information in a predetermined storage area And a rewriting means for rewriting the priority order .

  In the control device according to the present invention, when the abnormality mode information is stored in a predetermined storage area when the abnormality occurs, the storage capacity is exceeded. Since the mode information of the low level is erased and then the mode information of this time is stored, the important abnormal state can be surely and continuously stored without being erased. Therefore, accurate maintenance can be performed based on the stored information, and the reliability of maintenance can be improved.

  Embodiments of the present invention will be described below in detail with reference to the drawings.

  FIG. 1 is a diagram showing the overall configuration of the control device of the present invention. As shown in the figure, the control device of the present invention includes a control device 1 that controls each of the controlled units A, B,... Constituting the control device, and a drive state of each of the controlled units A, B,. .., And the control apparatus 1 further includes abnormality determination means 3, aspect determination means 4, aspect information processing means 5, and notification means 6. Yes. Here, the controlled parts A, B,... Are controlled members such as a gas flow rate control valve, a blower fan, and a feed water flow rate control valve if this control device is, for example, an automatic hot water filling device for a bathtub. The driving state monitoring means 2 is a sensor that detects the valve opening, the fan rotation speed, the feed water temperature, the water level, and the like.

  The control device 1 is mainly composed of a microcomputer comprising a CPU, a ROM, and a RAM, and each means 3, 4, 5, 6 is configured as a software function that the CPU executes according to the program according to the present invention.

  Of the means 3, 4, 5, 6 constituting the control device 1, the abnormality determination means 3 is based on the signals from the drive state monitoring means 2, 2,. Determine whether or not. Then, when the abnormality determining unit 3 determines that the controlled units A, B,... Are abnormal, the mode determining unit 4 determines which of the plurality of abnormal modes registered in the storage unit 7 in advance. It is determined whether it corresponds to. Note that the storage unit 7 stores various abnormal modes and mode information given correspondingly. For example, if this control device is an automatic hot water filling device for a bathtub, a hot water supply temperature rise abnormality and a number “1” as its mode information, a water level abnormality in the bathtub and a number “2” as its mode information, etc. .

  The notification unit 6 displays the mode information (numbers here) attached to the abnormal mode determined by the mode determination unit 4 on a liquid crystal screen, for example, and notifies the user.

  On the other hand, the mode information processing means 5 stores the current mode information in the second area 8b of the storage unit 8 in addition to the previous mode information. Further, when the mode information of this time is stored and the storage capacity is exceeded, the mode information having a lower priority level from the mode information of the previous time according to the priority level registered in the first area 8a of the storage unit 8 in advance. After that, a process of storing the current mode information in the second area 8b is performed. Therefore, the mode information is sequentially arranged in time series in the second area 8b and stored as history.

  Note that the priorities are, for example, numbers in which mode information is arranged in order of priority such as “1, 4, 7, 27, 11,...” And stored in the second area 8b. Of the information, the mode information having the lower priority is deleted first.

  By configuring the storage unit 8 with an external nonvolatile storage element, the mode information can be stored without being lost even in the event of a power failure or the like, and the history of abnormal conditions can be referred to at all times.

  Further, the priority order of the storage unit 8 may be rewritten from the outside using a remote controller. By enabling rewriting from the outside, the operator can change the priority order as needed.

  As described above, in the control device according to the present invention, when the abnormal state information is stored when the abnormality occurs, the storage capacity exceeds the storage capacity. According to the priority order registered in advance, priority is given to the previous type information. Since the mode information with the lower rank is erased and then the mode information of this time is stored, the important abnormal state can be surely and continuously stored without being erased. Therefore, accurate maintenance can be performed based on the stored information, and the reliability of maintenance can be improved.

  In the above description, the control device is an automatic bath filling device for a bathtub. However, the present invention is similarly applied to other various control devices such as an air conditioner, an instantaneous water heater, and an oil fan heater. Can be applied.

It is a figure which shows the whole structure of the control apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Control apparatus 2 Driving state monitoring means 3 Abnormality discrimination means 4 Aspect determination means 5 Aspect information processing means 6 Notification means 7 Storage part 8 Storage part 8a 1st area 8b 2nd area A, B Controlled part

Claims (1)

A control device for controlling each of the controlled parts constituting the control device;
Driving state monitoring means for monitoring each driving state of the controlled part,
The control device further includes:
An abnormality determining means for determining whether the controlled part is normal based on a signal from the driving state monitoring means;
A mode determining unit that determines which of the plurality of pre-registered abnormal modes the abnormality corresponds to when the controlled unit is determined to be abnormal by the abnormality determining unit;
Informing means for informing the aspect information attached to the abnormal aspect determined by the aspect determining means;
The above aspect information is stored in a predetermined storage area composed of external nonvolatile memory elements in addition to the previous aspect information, and when the current aspect information is stored, the storage capacity will be exceeded, and it is registered in advance. In accordance with the priority order, aspect information processing means for performing a process of erasing the aspect information having a low priority order from the previous aspect information from the predetermined storage area and then storing the current aspect information in the predetermined storage area;
Rewriting means for rewriting the priorities ,
Control equipment characterized by that.

Images