JP3221841B2 - Elevator abnormal condition capture device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator failure state capturing device for collecting data relating to an abnormality when an abnormality occurs in the elevator.

[0002]

2. Description of the Related Art An elevator installed in a building is an essential means of transportation for residents of the building to enter and exit the building. A lot of trouble occurs,
There is a risk of accidents involving human beings.

In order to prevent the occurrence of such an abnormality in the elevator and to quickly recover from the abnormality when the abnormality occurs, a terminal monitoring device connected to an elevator control device is installed in the building where the elevator is installed. This terminal monitoring device is connected to a monitoring center of an elevator maintenance company via a telephone line. Then, the terminal monitoring device constantly captures and stores the elevator operating state data from the control device, determines whether there is an abnormality based on the captured operating state data, and when a serious abnormality occurs, the elevator operating state at that time. Store data separately,
An abnormality is reported to the monitoring center via the telephone line.

[0004] On the other hand, when the monitoring center receives the notification of such an abnormality, a maintenance person is dispatched to the site as needed to recover the abnormality, and the operation at the time of the abnormality stored in the terminal monitoring device is performed. The status data is read out via a telephone line, the cause of the abnormality is analyzed based on the data at the time of the abnormality, and the result is used as a reference for maintenance work for preventing the occurrence of the abnormality in the future.

[0005] Japanese Patent Application Laid-Open No. 4-68563 filed by the present applicant as a conventional technique stores, when an abnormality of an elevator is detected, the operation status and control data for a certain period of time before and after the abnormality is detected. A method is described in which such data is read out via a communication line and confirmed in a time chart. FIG. 3 is a part of a time chart in which data is collected and plotted according to the conventional technique. As shown in FIG. 3, in addition to the speed curve of the car when an abnormality is detected and the operation states of various switches, various signal data for controlling an elevator (not shown) are plotted over a certain period. By analyzing this drawing, it was possible to determine the cause of the failure and determine the location of the failure.

In Japanese Patent Application No. 63-310485, a terminal device having a plurality of storage areas has a storage area capable of storing a plurality of times of elevator operation state data at the time of abnormality detection, and detects an abnormality of the elevator. Then, when the operation status data at that time is transferred to the storage area, the oldest data in the storage area is discarded, the data is shifted by one time, and then the data is transferred. An elevator failure analysis device that can be secured is described.

[0007]

By the way, there are various phenomena in the abnormality of the elevator. In the above-mentioned conventional example, some predetermined states are set as abnormal states, and the abnormality is detected based on the states. It has become. The operation area data of many elevators is stored in the storage area, but when they are output in a time chart, only a part of the data is needed to actually investigate the cause.
It depends on the type of abnormality that has occurred.

[0008] The abnormal phenomena of the elevator are classified into two types: one that is caused by a single cause, and one that is caused by a plurality of abnormal phenomena in a very short time. Unless an abnormal phenomenon is grasped, it becomes difficult to find the cause.

However, in the above-mentioned conventional example, since the operation state data of many elevators for drawing a time chart is collected for a certain period of time, the amount of data to be stored increases, and the data in the storage area is shifted accordingly. In addition, there is a problem that processing such as transfer of the latest data to the storage area takes time, and during that time, even if a new abnormality occurs, it cannot be detected.

An object of the present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide an elevator abnormal state capturing apparatus for minimizing an abnormal detection impossible time due to data processing time.

[0011]

In order to achieve the above object, according to the present invention, there is provided a ring buffer system which reads part or all of state data indicating the operation of an elevator from an elevator controller and continuously stores the state data for a predetermined time. A first storage means, an abnormality detection means for detecting a plurality of abnormal forms based on a combination of specific data among the state data, and the first detection means when the abnormality detection means detects an abnormality.
A data sampling means for extracting data from the storage means and storing the data in the second storage means; and a second storage means capable of accumulating the data of the first storage means for a plurality of times. Has a configuration provided with a selection unit that selects only state data set in advance in association with each of a plurality of abnormal forms, out of the data in the first storage unit.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of an elevator abnormal state capturing apparatus according to the present invention.

FIG. 1 is a block diagram showing an embodiment of an elevator abnormal state capturing apparatus according to the present invention.

In FIG. 1, reference numeral 1 denotes an elevator control device which controls the operation of the elevator and has various data representing the operation state and control information. Reference numeral 2 denotes an elevator abnormal state capturing device, which is a first storage means 21 which constantly captures and stores operation data in the elevator control device 1,
Abnormality detecting means 22 for monitoring specific data in the operation data of the elevator control device 1 to detect an abnormality. When the abnormality detecting means 22 detects an abnormality, predetermined data is determined based on the type of the abnormality. The system includes a data collection unit 23 for selecting from operation data in the first storage unit and transferring it to the second storage unit, a second storage unit 24 having an area for storing a plurality of abnormal data, and a communication unit 25. .
Reference numeral 3 denotes a data collection center, which is connected to the abnormal state capturing device 2 via a communication line 4.

The first storage means 21 stores data representing the operating state and control information of the elevator control device 1 constantly or periodically at short intervals and stores the data of the elevator for a certain period of time. The storage system has a storage capacity and a storage system that always keeps the latest data for a fixed time by storing data indefinitely in a ring buffer system. In the present embodiment, for convenience, it is assumed that the first storage means 21 always reads and stores 100 types of data of the elevator.

The abnormality detecting means 22 constantly monitors some specific data in the control information of the elevator control device 1 and detects a plurality of types of abnormalities by a combination thereof. A function of transmitting an abnormality detection signal indicating that an abnormality has been detected and data indicating the type of abnormality detected among a plurality of types of abnormalities to the data collecting means 23.

The data collecting means 23 includes the abnormality detecting means 22
When the abnormality detection signal transmitted from the first storage means 21 is received, the operation of reading and storing the elevator data in the first storage means 21 is stopped, and the second storage means 24
, The oldest data among the data stored due to the abnormalities up to the previous time is discarded, and the remaining data is shifted by one.

Further, as shown in FIG. 2, elevator data necessary for the type of abnormality is preset in the data collection means 23, and the data is transferred from the first storage means 21 to the second storage means 24. At this time, a function is provided for selecting and transferring only necessary data corresponding to the abnormality based on the data representing the type of the abnormality transmitted from the abnormality detecting means 22. Elevator data necessary for each abnormality is set in advance based on data examined by a specialized engineer such as an elevator design department or a quality assurance department. In the present embodiment, the type of abnormality detected by the abnormality detecting means 22 is 10
For each type, ten pieces of data necessary for investigating the cause of each abnormality are set in the data collecting means 23 in advance.

Now, assuming that an abnormality occurs in the elevator for some reason and the abnormality is an abnormality form corresponding to abnormality 1 out of the 10 types of abnormality in FIG. 2, the abnormality detecting means 22 detects that the abnormality has been detected. Is transmitted to the data collection means 23 as an abnormality detection signal indicating the error and data indicating the type of the abnormality.

The data collecting means 23 includes the abnormality detecting means 22
, The operation of reading and storing the elevator data in the first storage unit 21 is stopped, and the abnormality detection unit 22 is stopped from performing the abnormality detection operation.

Next, the data sampling means 23 performs the operation of discarding the oldest data among the data stored in the second storage means 24 due to the abnormalities up to the previous time and shifting the data by one. That is, assuming that the storage area in the second storage means 24 is divided into four areas from the areas 241 to 244, the data stored in the areas 241 to 243 are stored in the areas 242 to 244. Area 244 in which the oldest data is stored is overwritten by the data in the area 243 immediately before, and the area 241 is stored with the latest data at the time of the latest abnormality occurrence in the area 241. Will be able to

Next, the data collecting means 23 sets "abnormality 1" indicating the type of abnormality received from the abnormality detecting means 22.
1 and the setting of FIG.
1 to select data from the storage area 2 of the second storage means 24
Transfer to 41. That is, here, since the type of the abnormality is “abnormal 1”, the data corresponding to the abnormality 1 is “data 1”, “data 2”,. Is copied to the storage area 241 of the second storage means 24, so that there are only ten types of data to be copied.

When the copying of the data is completed, the data collecting means 23 restarts the operation of reading and storing the elevator data in the first storage means 21, and the abnormality detecting means 22 performs the abnormality detecting operation. Also resume.

The data at the time of abnormality stored in the second storage means 24 can be read out from the data collection center 3 via the communication line 4 and the communication means 25 at any time. In addition to analyzing abnormal phenomena, it can be used as a reference for subsequent maintenance work.

In this embodiment, the data collection means 23
Stops the elevator data storage operation of the first storage means 21 immediately upon receiving the abnormality detection signal from the abnormality detection means 22, but waits for a fixed time after receiving the abnormality detection signal to store the data in the first storage means. By providing a memory for stopping the operation in the data collecting means 23, data before and after the abnormality is detected can be stored, and a time chart as shown in FIG. 3 can be created.

As described above, according to the present embodiment, the first
Since the amount of data transferred from the storage unit 21 to the second storage unit 24 when an abnormality is detected, that is, the amount of data for one abnormality is 1/10 of the total data amount, the storage area in the second storage unit 24 The processing time required for the shift operation and the processing time for copying from the first storage means 21 to the second storage means 24 are also reduced to 1/10, so that the abnormal detection disabled time during that time can be minimized.

When the data stored in the second storage means 24 is read out to the data collection center 3 via the communication line, the data amount is reduced to 1/10, so that the communication time is shortened accordingly. Will be.

[0028]

According to the present invention, the elevator control data stored when an abnormality is detected is limited to the minimum data necessary for investigating the cause. Since the data processing time until an error can be detected is minimized, the time during which an error cannot be detected is shortened, and complex abnormal phenomena that occur continuously in a short time can be reliably grasped. Become like

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an embodiment of the present invention.

FIG. 2 is a table configuration diagram used for describing the present invention.

FIG. 3 is a time chart used for explaining a conventional technique.

[Description of Signs] 1 elevator control device 2 elevator abnormal state capturing device 21 first storage means 22 abnormality detection means 23 data collection means 24 second storage means 25 communication means 3 data collection center 4 communication line

Claims (1)

(57) [Claims] 1. A ring buffer type first storage unit that reads part or all of state data indicating an operation of an elevator from an elevator control device and continuously stores the state data for a predetermined time, and specific data of the state data. Abnormality detecting means for detecting a plurality of abnormal forms based on a combination of the above, and data stored in the first storage means at the time when an abnormality is detected by the abnormality detection means and stored in the second storage means Collection means, and second storage means capable of accumulating data of the first storage means for a plurality of times,
The data collection means is provided with a selection means for selecting only state data set in advance in association with each of a plurality of abnormal forms among data in the first storage means. Fault condition capture device.