JPH10140616A - Operating condition monitoring device for working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operating condition monitoring device of a wide use by which various demands to a monitoring system are flexibly dealt with so that information obtained can be centralizedly controlled. SOLUTION: An operating condition monitoring device for a working machine is made up of a detecting means 3 for detecting the operating condition of the working machine, a supervisory data collecting means 4 by which a data processing code table 462 is successively interpreted at a given period, and the detected operating condition data are processed to supervisory data 461, and by which data are output in response to the demand from a monitoring device 2, transmitting/receiving means 5, 6 for carrying out the transmission and receiving between a supervisory data collecting device 1 and the monitoring device 2, and a supervisory data acquisition processing means 7 by which the demand is output to the supervisory data collecting device 1, and supervisory data are obtained and processed. At that time, when a rewrite command of a data processing code table is output from the monitoring device 2 to the supervisory data collecting device 1, the supervisory data collecting means 4 rewrites a data processing code table 462.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating state monitoring apparatus for a working machine, and more particularly to an operating state monitoring apparatus for real-time monitoring of the operating state of a working machine such as a hydraulic shovel or a dump truck.

[0002]

2. Description of the Related Art In general, working machines such as hydraulic shovels and dump trucks are often used under severe conditions, and each part of the machine is severely damaged. Therefore, appropriate maintenance management is required for these machines. You. Also, at a large-scale work site, a plurality of work machines such as hydraulic excavators and dump trucks operate systematically, and failure of one work machine affects the entire work management. It is necessary to grasp the operation status, take appropriate measures for work machines that may fail, and prevent a decrease in work efficiency.

Conventionally, there are several types of monitoring systems for grasping the operating state of a work machine.
Among them, the most common one is a method in which a meter, a lamp, a buzzer, and the like are provided in a cab to display an operating state of a work machine to an operator.

Further, as a development of a service tool on the maker side, a system in which a terminal is connected to a controller mounted on a working machine by wire and information required for service is obtained from the terminal, Kaisho 52
As disclosed in JP-77-33737, there is a system in which service information is transmitted to a terminal by wireless and the service information is obtained from the terminal.

[0005]

However, the method of obtaining operation information from a wired terminal is convenient in the vicinity of the work machine. However, considering that the service is actually performed, the work machine is operated. Service offices located far from the point where they were located were not enough to grasp operation information, and it was difficult to provide efficient services.

Conventionally, as a factor complicating such a system for grasping the operation state of a work machine, data to be monitored is different according to a special specification for each user, and a system for processing the data is also different. , Could not build a monitoring system in a certain format.

[0007] Also, since various monitoring systems are presently present individually, they are not systems that can be used in connection with each other, and those systems are different only in the form of communication. It was necessary to recreate the entire system or rewrite the program according to the model. For this reason, not only is the burden of design man-hours, inspection man-hours, and maintenance man-hours required to create a monitoring system large, but monitoring systems with different specifications also reduce service efficiency and make it difficult to manage acquired information. Was. Therefore, in the present invention, in view of the above problems,
The purpose of this invention is to construct a versatile operating condition monitoring device that can flexibly respond to various demands for a device for monitoring the operating condition of a work machine and can centrally manage information obtained from the device. It is assumed that.

[0008]

In order to achieve the above-mentioned object, the present invention provides a detecting means for detecting an operating state of a work machine and a data processing code table which is sequentially interpreted at a fixed period, and the detecting means comprises: A monitoring data collection unit that processes and saves the operation state data detected from the predetermined monitoring data and interprets an output command from a monitoring device and outputs the stored monitoring data; and Work machine-side transmitting and receiving means for transmitting and receiving between, a monitoring data collection device provided with a plurality of working machines, monitoring device-side transmitting and receiving means for transmitting and receiving between the monitoring data collection device,
A monitoring device that outputs the output command to the monitoring data collection device, and a monitoring data acquisition processing unit that acquires and processes the monitoring data. The monitoring data collection means includes means for interpreting a rewrite command of the data processing code table output from the monitoring device to the monitoring data collection device and rewriting the data processing code table. .

Further, the monitoring data collecting means stores the data processing code table, and sequentially interprets the data processing code table at regular intervals, and stores each of the operating state data by a storage processing program. Monitoring data storage processing means for converting the monitoring data into predetermined monitoring data, storage means for storing the monitoring data, and monitoring data output processing for interpreting the output command and outputting the monitoring data with an output processing program Means,
Data processing code rewriting means for interpreting the rewriting instruction and rewriting the data processing code table.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIGS.
This will be described with reference to FIG.

FIG. 1 is a diagram showing the overall configuration of a working machine operation state monitoring apparatus according to this embodiment.

In the figure, reference numeral 1 denotes a monitoring data collecting device mounted on a working machine such as a hydraulic shovel, 2 denotes a monitoring device which is placed in a remote management office or the like and monitors the operating state of the working machine, 3 denotes a working machine An operating state detecting unit for detecting various operating states of the above, 31 is a detecting unit from a monitor panel that shows the operating state to a driver in a hydraulic shovel or the like, 32 is a detecting unit from a controller that controls a work machine, 33 is A detection unit 4 from a sensor mounted to detect the state of each place of the work machine 4 processes the operation state data detected by the operation state detection unit 3 into predetermined monitoring data, and the monitoring device 2
A monitoring data collecting unit that outputs the monitoring data in response to a command from the CPU; 41, a CPU for performing required arithmetic control; 42, an interface; 43, a data bus; 441 is operating state data stored in the memory 44, 45 is an interpreter, a group of storage processing programs,
RO for storing programs such as an output processing program group and a data processing code table rewriting program
A memory 451 such as an M interprets a data processing code table or a command from the monitoring device 2 at regular intervals, and instructs execution of a storage processing program, an output processing program, or a data processing code table rewriting program. , 452 are storage processing programs for converting each operating state data into predetermined monitoring data and storing the same;
Reference numeral 453 denotes an output processing program group for performing output processing of the stored monitoring data in response to a command from the monitoring device;
4 is a data processing code rewriting program for rewriting the data processing code table, 46 is a memory such as a RAM for storing monitoring data and the data processing code table, 461 is monitoring data stored in the memory 46, 46
Reference numeral 2 denotes a rewritable data processing code table for determining which of the storage processing programs should be used to process each operation state data. 47 is a communication interface, and 5 and 6 are wireless communication means, respectively. The work machine-side transmission / reception unit and the monitoring device-side transmission / reception unit 7 that transmit and receive data between the monitoring device 2 and the monitoring data collection device 1 using the
An output command input from the monitoring command input unit 8 is output to obtain desired monitoring data and output to the monitoring data display unit,
Or a monitoring data acquisition processing unit which outputs a data processing code rewrite instruction input from the monitoring instruction input unit 8;
1 is a communication interface, 72 is a CPU for performing required arithmetic control, and 73 is an R for storing processing procedures of the CPU 72 and the like.
A memory such as an OM; 74, a data bus; 75 and 76, interfaces; and 8, a command for outputting which of the output processing programs in the output processing program group, A monitoring command input unit that outputs a processing code table rewriting command,
Reference numeral 9 denotes a monitoring data display unit for displaying the obtained monitoring data in a desired form, and reference numeral 91 denotes monitoring data to be displayed.

The transmission / reception units 5 and 6 are not limited to wireless, but may be wired or other communication means such as a mobile phone. Further, when the distance between the work machine and the monitoring device installed in the management office is large, the transmission may be performed via a relay (not shown).

The monitoring device may be a device such as a personal computer that can issue a command to a work machine and display the received data in an appropriate format.

FIG. 2 is a diagram showing each functional configuration in the monitoring data collection device 1 and the monitoring device 2 shown in FIG.

In FIG. 1, reference numeral 401 denotes an operating state data storage unit for temporarily storing operating state data; 402, an interpreter unit for executing processing as an interpreter;
Is a data processing code table, and 404 is an interpreter 402 that sequentially interprets the data processing code table 403, activates a predetermined storage processing program from a group of storage processing programs, and monitors operating state data by a predetermined monitoring function. A monitoring data storage processing unit for converting data into data, 4
Reference numeral 05 denotes a storage unit for storing the monitoring data created by the monitoring data storage processing unit 404. Reference numeral 406 denotes an interpreter 402 for interpreting an output command from the monitoring data acquisition processing unit 7, and outputs a predetermined command from a group of output processing programs. The monitoring data output processing unit 407 activates the output processing program and outputs the monitoring data stored in the monitoring data storage unit 405. The interpreting unit 402 receives a data processing code rewriting command from the monitoring device 1 by the interpreter unit 402. The configuration of the data processing code rewriting unit that interprets and rewrites the data processing code table 403 is the same as that shown in FIG.

FIG. 3 is a flowchart showing a processing procedure in the interpreter unit 402 shown in FIG.

In this flowchart, the interpreter unit 402 is started at a fixed period by a timer interrupt. In step S4021, it is determined whether a command instructed by the monitoring device 2 has been input. Reads the command from the data processing code table in step S4022, further determines in step S4024 whether the read command is a data processing code rewrite code, and if NO, determines in step S4025 A program, that is, a predetermined program in a group of storage processing programs is started. Also, in step 4021,
If determined to be YES, the command instructed from the monitoring device 2 is read in S4023, and further, it is determined whether or not the command read in step S4024 is a data processing code rewriting code. In S4025, a processing program, that is, a predetermined program in the output processing program group is started. Also, in step 4021, YES
If it is determined that the command instructed from the monitoring device 2 is read in S4023, it is determined whether or not the command read in step S4024 is the data processing code rewrite code. , The timer interrupt is disabled, the command is read in step S4027, it is determined in step 4028 whether the data processing code rewriting code has been completed, and if NO, the data processing code rewriting program is started in step S4029, The data processing code table is rewritten. This rewriting process is repeated, and when it is determined in step S4028 that the data processing code rewriting code has ended, in step S4030, a timer interrupt is enabled.

As described above, the interpreter unit 402 transmits the command from the data processing code table to the monitoring device 2
Has a function of reading the two types of commands instructed from the CPU and activating a predetermined storage processing program, output processing program, or data processing code rewriting program in accordance with the respective commands.

Next, FIG. 4 shows the operation state detector 3 shown in FIG.
FIG. 4 is a diagram showing an example of detection items of operating state data detected by the operation panel. The monitor panel 31 indicating the state of the hydraulic shovel to the driver includes detection items such as engine overheating, low fuel, and an emergency stop switch. From the controller 32 for controlling the machine, detection items such as engine rotation speed and hydraulic oil temperature, and from the sensor 33 mounted for detecting the state of each place of the work machine, detection items such as engine room temperature and coolant temperature. There is.

FIG. 5A shows an example of the storage processing program group 452 shown in FIG. 1, and includes a warning error storage, an emergency error storage, a time accumulation processing storage, and the like.
There are processing programs for average maximum / minimum calculation storage and short-term data storage. FIG. 5B shows an example of the output processing program group 453 shown in FIG. 1, and corresponds to the storage processing program group. , Warning error output, emergency error output, time accumulated data output, average maximum / minimum data output, and short-term data output.

FIG. 6 is a diagram showing an example of various types of monitoring data 461 processed by the storage processing program 452 shown in FIG. 1 and stored in a predetermined area, and includes a warning error, an emergency error, and time accumulated data. , Average maximum and minimum data, and short-term data are stored in each area.

FIG. 7 is a diagram showing an example of the data processing code table 462 shown in FIG. 1. This data processing code table is rewritable. It is composed of a code table that determines whether or not to process with the storage processing program. FIG. 7A shows a data processing code table before data processing code rewriting, and FIG. 7B shows a data processing code table after data processing code rewriting.

FIG. 8 is a diagram showing an example of a command table input to the monitoring command input unit 8 shown in FIG. 1 by a monitor or the like. It consists of a code table that determines whether to process with the output processing program.

FIG. 9 is a diagram showing an example of the monitoring data 91 displayed on the monitoring data display section 9 shown in FIG. 1. Each of the obtained monitoring data includes a warning error and an emergency error. Time accumulated data is displayed in a desired form such as accumulation of operation time, short-term data is transition of short-term data, and average maximum / minimum data is transition of long-term data.

Next, the operation of the working machine operating state monitoring apparatus of the present embodiment will be described with reference to FIG.

The operating state detector 3 detects operating state data of the work machine, inputs the data to the monitoring data collecting section 4, samples the operating state data storage section 401 at regular intervals, and updates and stores the data.

On the other hand, when a command as a command from the monitoring data obtaining unit 7 is not transmitted, the interpreter unit 402 interprets the command from the data processing code table 403 and activates a predetermined storage processing program. . Next, the monitoring data storage processing unit 404 reads the operation state data stored in the operation state data storage unit 401 by using the storage processing program started by the interpreter unit 402, processes the operation state data into predetermined monitoring data, It is stored in the monitoring data storage unit 405.

When it is necessary for the monitoring device 2 to obtain monitoring data, the monitoring data obtaining processor 7 executes a command as an output command input from the monitoring command input unit 8 to obtain the monitoring data. The monitoring data collection device 1
Send to The transmitted command is interpreted by the interpreter unit 402 of the monitoring data collection unit 4, and activates a predetermined output processing program.

In the monitoring data output processing unit 406, the monitoring data stored in the monitoring data storage unit 405 is transmitted to the monitoring device 2 by the output processing program started by the interpreter unit 402.

When the monitoring data acquisition processing section 7 acquires the monitoring data, it displays the monitoring data in a desired form on the monitoring data display section 9 as necessary.

In this embodiment, when the data processing code table 403 needs to be rewritten, the monitoring data acquisition processing unit 7 of the monitoring device 2 sends the monitoring command input unit 8 to rewrite the data processing code table 403. Is transmitted to the monitoring data collection device 1 as a rewrite command input from the server. The transmitted command is interpreted by the interpreter unit 402 of the monitoring data collection unit 4,
The rewriting program is activated in the data processing code rewriting unit 407, and rewrites the data processing code in the data processing code table 403.

Next, as an example, a procedure for obtaining monitoring data of an operating state of engine overheating by an inquiry from a management office in which the monitoring apparatus is installed will be described first.

The operating status data stored in the operating status data storage unit 401 shown in FIG.
In this case, the monitoring data is repeatedly generated at regular intervals in accordance with No. 3, and in this case, the operation state data "2" shown in FIG. Is assigned. Thus, when the engine overheats, the error occurrence time and the content of the error are stored in the monitoring data storage unit 405. In the management office, the monitoring data acquisition processing unit 7 transmits a process “7” as an emergency error output of engine overheating as a command from the command table shown in FIG. As a result, the monitoring data of the emergency error shown in FIG. 6 is called from the monitoring data storage unit 405, output to the monitoring data acquisition processing unit 7, and displayed in the monitoring data display unit 9 as to the presence / absence of the error shown in FIG. Is displayed with. In the present embodiment, a plurality of save processing programs can be assigned to the same operation state data. For example, the processing of the time accumulation processing storage “3”, the average maximum / minimum calculation storage “4”, and the short-term data storage “5” are assigned to the operation state data of the engine speed shown in FIG. Like the meter, the operating time is accumulated,
The average, maximum, and minimum processing of a fixed time period is performed, the transition of data over a long period is measured, and short-term data can be stored at the same sample rate as when the operation state data storage unit 401 is rewritten.

Next, a procedure for rewriting the data processing code table 403 in the monitoring data collection device 1 from the management office will be described with reference to FIG.

From the data processing code table before rewriting as shown in FIG. 7A, in order to reduce the number of items of storage processing for specific operating state data, for example, FIG.
As shown in (b), in order to prevent the short-term data storage processing “5” from being performed on the operation state data of the engine speed, the hydraulic oil temperature, the engine room temperature, and the coolant temperature, the monitoring must be performed. The data acquisition processing unit 7 transmits the data processing code having the contents shown in FIG. 7B to the monitoring data collection unit 4 together with the rewrite command. The transmitted command is interpreted by the interpreter unit 402,
The data processing code rewriting unit 407 is activated, and the data processing code table 403 is rewritten from the table in FIG. 7A to the table in FIG. After rewriting, normal operation state data storage processing or output processing can be performed.

As described above, according to the present embodiment, the monitoring device instructs the monitoring data collection device to perform necessary output processing when necessary, whereby arbitrary monitoring data relating to the operation state of the work machine can be obtained. In addition to being available, it can output a command to rewrite the data processing code table, and can instruct arbitrary storage processing for various operating state data.

In addition, since the change of the storage process only requires changing the data processing code table, the operation reliability of the software is not impaired.

Further, since the monitoring data collecting apparatus of the present embodiment is configured to process according to the data processing code table, the operating state data and the processing of processing the operating state data to generate predetermined monitoring data are clearly separated. Can, and
Periodic processing for creating monitoring data based on operating state data and processing for outputting monitoring data in response to a processing command from a monitoring device are structurally separated. Therefore, it is easy to deal with other models, and the man-hours for design, inspection, and maintenance can be greatly reduced.

[0040]

As described above, the operating state monitoring device for a working machine according to the present invention issues an arbitrary data processing command from the monitoring device to the monitoring data collection device and stores the command in the monitoring data collection device. It is possible to obtain any monitoring data related to the operating status, and if necessary, change the program for storing and processing the operating status data according to a command from the monitoring device. Monitoring method can be selected, and it is possible to flexibly cope with various requests for a user's device.

[Brief description of the drawings]

FIG. 1 is a diagram showing an overall configuration of a working machine operation state monitoring device according to an embodiment of the present invention.

FIG. 2 is a functional configuration diagram of a monitoring data collection device 1 and a monitoring device 2 shown in FIG.

FIG. 3 is a flowchart illustrating a processing procedure in an interpreter unit 402 illustrated in FIG. 2;

FIG. 4 is a diagram showing an example of detection items of operating state data detected by the operating state detecting unit 3 shown in FIG.

FIG. 5 is a diagram showing an example of a storage processing program group 452 and an output processing program group 453 shown in FIG.

FIG. 6 is a diagram showing an example of monitoring data 461 shown in FIG.

FIG. 7 is a diagram showing an example before and after rewriting of a data processing code table 462 shown in FIG. 1;

8 is a diagram showing an example of a data processing command input from the monitoring command input unit 8 shown in FIG.

FIG. 9 is a diagram showing an example of monitoring data displayed on the monitoring data display unit 9 of FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 monitoring data collection device 2 monitoring device 3 operating state detecting unit 4 monitoring data collecting unit 401 operating state data storage unit 402 interpreter unit 403 data processing code table 404 monitoring data storage processing unit 405 monitoring data storage unit 406 monitoring data output processing unit 407 Data processing code rewriting unit 44 Memory 441 Operating state data 45 Memory 451 Interpreter 452 Storage processing program group 453 Output processing program group 454 Data processing code rewriting program 46 Memory 461 Monitoring data 462 Data processing code table 5 Work machine side transmitting / receiving unit 6 Monitoring device side transmission / reception section 7 Monitoring data acquisition processing section 8 Monitoring command input section 9 Monitoring data display section

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Yoshiki Furuno 650, Kandamachi, Tsuchiura-shi, Ibaraki Hitachi Construction Machinery Co., Ltd. Tsuchiura factory

Claims (2)

[Claims] 1. A detecting means for detecting an operation state of a work machine, and a data processing code table are sequentially interpreted at regular intervals, and the operation state data detected by the detecting means is processed into predetermined monitoring data and stored. A monitoring data collection unit that interprets an output command from a monitoring device and outputs the stored monitoring data, and a work machine-side transmission / reception unit that performs transmission and reception with the monitoring device. A monitoring data collection device provided in a machine, a monitoring device-side transmission / reception unit for transmitting and receiving between the monitoring data collection device, and the output command to the monitoring data collection device to obtain the monitoring data A monitoring device comprising: a monitoring device having a monitoring data acquisition processing unit; An operating state monitoring device for a working machine, comprising: means for interpreting a rewrite command of the data processing code table output to the monitoring data collection device and rewriting the data processing code table. 2. The monitoring data collection unit according to claim 1, wherein the monitoring data collecting unit sequentially interprets the data processing code table at a fixed period, and stores the data processing code table in a predetermined cycle. Monitoring data storage processing means for converting each operating state data into predetermined monitoring data; storage means for storing the monitoring data; interpreting the output command; and outputting the monitoring data by an output processing program. And a data processing code rewriting means for interpreting the rewriting command and rewriting the data processing code table.