JPH0573746A - Machine operation condition management device - Google Patents

Abstract

PURPOSE:To effectively use vibration data of a machine for management of the operation condition of the machine by efficiently analyzing vibration data of the machine. CONSTITUTION:The vibration level detected by an vibration detecting means 2 is hierarchized to plural levels reflecting work contents by a data processing means 3 and is stored as encoded data in a storage means 4. Only encoded data for the change of the vibration level is stored to store only vibration data in a required range out of vibration data in a certain period. Consequently, a portable miniaturized device is realized because the storage capacity of the storage means 4 is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a machine operation status management device for managing the operation status of various construction machines by detecting the level of vibration generated from the machine.

[0002]

2. Description of the Related Art Various construction machine vehicles (hereinafter simply referred to as machines) such as a bulltozer, a mixer truck, and a truck are operating at a construction site, etc., and the operating states of these machines differ depending on the work content.

The difference in the operating status can be substantially grasped by knowing the level of the vibration generated from the machine. For example, when the machine is not operating at all, its vibration level is zero, when the engine is started to prepare for work, the vibration level is slightly higher, and when the machine is moving, the vibration level is higher. The vibration levels are even higher when the machine undertakes the actual work. As the operation status changes in this way, the vibration level also changes.

Therefore, by installing some vibration detecting means on the machine and detecting the vibration level thereof with time,
It is possible to estimate the work content of the machine for a certain period of time, and thus manage the operating status of the machine.

FIG. 5 shows an example of the disk type vibration detecting means 30 used for such a purpose. The recording medium 3 is formed on the surface of the disk 31 which makes one rotation for a fixed period of time, for example, 24 hours.
2 is attached, and the vibration detection mechanism 3 is used according to the magnitude of vibration.
The recording needle 33 that is driven by 4 and swings
It is made to contact with 2.

FIG. 6 shows a cylindrical vibration detecting means 40 as another example of the structure. A recording medium 42 is attached to the surface of a continuously rotating cylinder 41, and vibration is generated depending on the magnitude of vibration. The recording needle 43, which is driven by the detection mechanism 44 and oscillates, is brought into contact with the recording medium 42.

In this way, the recording media 32 and 42 in which the vibration level of the machine is recorded over time are periodically collected,
The vibration data is analyzed by being recorded in the daily report, which is used for managing the operation status of the machine.

[0008]

By the way, in each of the conventional vibration detecting means, since the vibration level is continuously detected for a certain period of time, it becomes very troublesome to record it in the daily report, and the vibration data is also complicated. The problem is that it takes a considerable amount of time to perform the analysis of.

The present invention has been made in consideration of the above problems, and a machine operating condition in which only a vibration level within a necessary range within a certain period is detected and vibration data is efficiently analyzed. The purpose is to provide a management device.

[0010]

In order to achieve the above object, the present invention provides a machine operation status management device for managing the operation status of a machine by detecting the vibration level. Vibration detecting means for detecting,
The data processing means for stratifying the vibration level into a plurality of levels and outputting each as coded data, the storage means for storing the coded data, and the time at each time when the vibration level changes, the time at that time is detected, and this time information In addition, the control means for storing the coded data in the storage means is provided.

[0011]

The detected vibration level is divided into a plurality of levels in which the work content is reflected, and then each is converted into coded data, and each time the vibration level changes, the coded data is stored in the storage means together with the time information. .. By storing the coded data in which the work content is reflected only when the vibration level changes in this way, only the vibration data in a necessary range within a certain period is stored. As a result, the vibration data can be easily retrieved from the storage means together with the time information as needed, so that the data can be efficiently analyzed.

[0012]

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

FIG. 1 is a block diagram showing an embodiment of a machine operation status management apparatus of the present invention. The machine operation status management apparatus 1 of this embodiment comprises, for example, a vibration sensor for detecting a vibration level according to the operation of the machine. A vibration detecting means 2; a data processing means 3 comprising, for example, a peak hold circuit and a CPU (central processing unit) for signal-processing the detected vibration level and stratifying it into a plurality of levels and outputting each as coded data, The storage means 4 for storing coded data, for example, an IC card, and the time at that time are detected from the clock 11 each time the detected vibration level changes, and the coded data is stored in the storage means 4 together with this time information. The control means 5 is composed of, for example, a CPU for performing such control operation.

Further, the apparatus 1 of the present embodiment is automatically stored by the display unit 6 capable of displaying the content of the vibration data when the vibration data is retrieved from the storage unit 4, and by the control operation of the control unit 5 as described later. Along with the coded data described above, key input means 7 such as a keyboard that allows manual input of coded data according to the work content by the operator of the machine to the storage means 4 at any time, and vibration data extracted from the storage means 4 Is output to the host computer.

The data processing means 3 classifies the vibration level detected from the machine in advance into, for example, the following four types in which the work content is reflected, and the corresponding coded data D0,
Convert to D1, D2, D3.

Level 0 (D0) ... Work pause Level 1 (D1) ... Engine start level 2 (D2) ... Movement level 3 (D3) ... Work Then, the data processing means 3 is controlled by the control means 5.
Each time the vibration level input from the vibration detection means 2 changes, the data corresponding to each level is stored in the storage means 4 together with the time information as shown in FIG.

In this case, the data processing means 3 samples the data, for example, every 0.5 seconds. So if you sample for 24 hours,
A total of 172,800 data will be sampled. Even if sampling is performed for 10 hours, 72,000 pieces of data will be sampled. Therefore, if it is attempted to store the sampling data as it is in the storage means 4 as it is,
The storage capacity of the storage means 4 becomes very large. However, the vibration level generated from the machine as in this embodiment is signal-processed and stratified into four levels as described above,
If the data is output only when the vibration level changes, the total amount of data stored in the storage means 4 is drastically reduced. As a result, it becomes possible to use, as the storage means 4, an IC card having a relatively small storage capacity (8 K to 32 K bytes) and being excellent in the application as in the present embodiment.

By installing the apparatus 1 of this embodiment in advance on the machine, the vibration level detected by the vibration detecting means 2 is changed into four kinds of coded data by the data processing means 3, and the vibration level is changed. It is output for each and is automatically stored in the storage means 4. By using a portable removable device such as an IC card as the storage means 4, when the data sampling is completed for a certain period, the IC card itself can be used as it is as a daily report. ..

In the key input means 7, keys corresponding to the work contents shown in Table 1 are set.

[0020]

[Table 1]

The operator of the machine depresses any key as needed to input the coded data corresponding to the coded data into the storage means 4 under the control of the control means 5 together with the coded data. It is configured to be memorable. Both of these coded data are controlled so that they can be stored in a series. Further, at the time of taking out data, the control means 5 takes out as separate data. As described above, the key input means 7 capable of manual input is provided.
This is to assist the automatic output of encoded data by the data processing means 3.

2 and 3 are a front view and a side view showing a specific structure of the apparatus 1 of the present embodiment. The same parts as those in FIG. 1 are indicated by the same numbers. A device body 13 is made of, for example, an insulating material, and has a power switch 14, I
C card eject lever 16, card holder 17, card insertion part 18, power connector 19, power unit 20, R
A / W drive unit 21, a control unit 22 and the like are provided. The device 1 is configured to be portable so that it can be easily installed in a machine.

Next, the operation of this embodiment will be described.

As shown in FIGS. 2 and 3, the portable apparatus 1 of the present embodiment is carried to a target machine and installed near the operator of the machine, and then the power switch 14 is turned on. .. When the power switch 14 is turned on, the device 1 enters the standby state, and the vibration detection means 2 starts detecting the vibration level of the machine. As shown in FIG. 4, first, level 0 in the rest state is detected.

Next, when the engine of the machine is started at time t1, the vibration level changes, so the data processing means 3
Level 1 is detected by this, and this data D1 and t
1 is stored in the storage means 4. Further, when the machine is moved at time t2, the vibration level becomes larger and changes, so the level 2 is detected by the data processing means 3,
T2 is stored in the storage means 4 together with the data D2.
Next, when the machine starts work at time t3, the vibration level further increases and changes, so the level 3 is detected by the data processing means 3 and t3 is stored in the storage means 4 together with this data D3.

Similarly, each time the vibration level changes, the time is stored in the storage means 4 together with the corresponding data.

The operator of the machine can press the key of the key input means 7 as necessary to store the corresponding data in the storage means 4 during the operation. For example, when maintenance of the machine becomes necessary, pressing the key "5" causes the corresponding data to be output together with this time. As a result, when data is taken out later, it becomes possible to grasp the operating status that the machine maintenance was being performed at this time.

When the machine operator has finished working for a day, for example, for a certain period of time, the machine 1 is stopped, the power switch 14 is turned off, and then the machine 1 is removed from the machine and delivered to the data management department.

In the data management department, the storage means IC
From the card, data on the change in the daily vibration level as shown in FIG. 4 is extracted and analyzed.

According to the present embodiment as described above, the storage means 4
Since the vibration level data stored in is not the total of the sampling data but only the necessary range data stored for each change of the vibration level, the amount of data stored is small. Therefore, this data itself can be used as a daily report, and the data can be efficiently analyzed.

As a result, it becomes easy to grasp the work content in a certain period, which is extremely effective in managing the operating status of the machine. Moreover, since the capacity of the storage means can be small, the structure of the device can be made compact so that it can be easily installed anywhere and the applications can be expanded.

In the embodiment of the present text, the content of each vibration level by layer is shown as an example, but this can be arbitrarily changed according to the purpose, application and the like.

[0033]

As described above, according to the present invention, the vibration level is stratified into a plurality of levels in which the work content of the machine is reflected, and each is coded data, and the data is output each time the vibration level changes. Since the data is stored in the memory, only the necessary range of data can be stored and the data can be efficiently analyzed. Further, along with this, the device itself can be miniaturized so as to be portable.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a machine operation status management device of the present invention.

FIG. 2 is a front view showing the device of this embodiment.

FIG. 3 is a side view showing the device of this embodiment.

FIG. 4 is a time-dependent change characteristic of the vibration level for explaining the operating principle of the device of this embodiment.

FIG. 5 is a schematic view showing a vibration detecting means used in a conventional device.

FIG. 6 is a schematic view showing another vibration detecting means used in the conventional device.

[Explanation of symbols]

 1 Machine Operation Status Management Device 2 Vibration Detection Means 3 Data Processing Means 4 Storage Means 5 Control Means

Claims (2)

[Claims] 1. A machine operation status management device for managing the operation status of a machine by detecting the vibration level, wherein a vibration detection means for detecting a vibration level according to the operation of the machine and a vibration level in a plurality of layers. Separately, data processing means for outputting each as coded data, storage means for storing the coded data, time at that time is detected each time the vibration level changes, and the coded data is stored together with this time information. A machine operation status management device, comprising: a control unit that stores the data in a unit. 2. The machine operation status management device according to claim 1, further comprising a key input means capable of manually inputting coded data according to a work content together with the coded data by a machine operator.