JPH10212739A - Device for monitoring operating condition of construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rewrite a program for processing operation data in accordance with circumstances of any one of management offices, from a remote station. SOLUTION: In a device for monitoring operating condition of a construction machine, a monitored data collecting means 1 comprises an electrically erasble memory means 45 for storing therein an program for processing monitored data, an electrically unerasable memory means 44 for storing therein a rewriting program for rewriting the operation data monitoring program, communication means 5, 6 for inputting and outputting various data to be received and transmitted, and for delivering an interrupting signal each time when a signal is transmitted or received, a computing and processing means 46 for computing and processing data in accordance with the operation data processing program or the rewriting program, and an erroneous rewrite preventing means 49 for preventing the operation data managing program stored in the electrically erasable memory means from being damaged or erroneously rewritten.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction machine operation state monitoring device, and more particularly to a construction machine capable of remotely rewriting an operation data processing program for processing construction machine operation data such as a hydraulic shovel and a dump truck. The present invention relates to a machine operation state monitoring device.

[0002]

2. Description of the Related Art In general, construction 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. Conventionally, there is a method in which a monitoring data collection device is provided in a construction machine and the monitoring data is transmitted to a distant monitoring device using a communication unit in order to grasp the operation status of the construction machine.

On the other hand, the operation data to be collected from the construction machine differs in the required operation data contents and the operation data sampling time depending on the work site. For example, if the construction machine only works in almost fixed positions, it is necessary to monitor front operations more frequently than running data,
For heavy excavation work, it is necessary to frequently monitor the oil pressure and oil temperature.

However, in order to change the operation data to be collected or the processing of the operation data in accordance with the work site or the operation situation, it is necessary to change the processing program of the operation data collection device. Since the change work is performed while the construction machine is temporarily stopped or performed outside the working hours of the construction machine, the work efficiency at the site is reduced, and waste such as waiting for the completion of the work of the construction machine has occurred.
Also, the construction machine work site is outdoor and dusty,
The environment is not suitable for bringing in a personal computer terminal for writing programs.

On the other hand, as a method of rewriting a program using a communication means for a remote terminal device, for example, Japanese Patent Application Laid-Open No. Hei 7-162547 is known.

[0006]

However, Japanese Patent Application Laid-Open No.
Japanese Patent Application Laid-Open No. 162547 is capable of accurately rewriting a program from a remote place, but requires a complicated key circuit to analyze transmitted serial data and determine whether writing is prohibited or permitted. I have.

Therefore, the present invention provides a construction machine operation state monitoring apparatus provided with a relatively simple and highly reliable operation data processing program changing means from a remote place without using a complicated key circuit. It is in.

[0008]

The present invention employs the following means in order to solve the above-mentioned problems.

Monitoring data collection means for detecting operation data of the construction machine, processing the data into predetermined monitoring data, storing the data, and outputting the stored monitoring data in response to a command from a monitoring device; Communication means for transmitting and receiving to and from a monitoring device, a monitoring data collection device provided on a construction machine, communication means for transmitting and receiving to and from the monitoring data collection device, and A monitoring device that outputs a command and obtains the monitoring data; anda monitoring device that includes:
At least an electrically erasable storage means for storing an operation data processing program; an electrically non-erasable storage means for storing a rewrite program for rewriting the operation data processing program; Communication control means for inputting / outputting various data to be transmitted / received and outputting a reception interrupt signal each time data is transmitted / received; arithmetic processing means for arithmetically processing data according to the operation data processing program or the rewriting program; Erroneous rewrite preventing means for preventing destruction or erroneous rewriting of the operating data processing program stored in the erasable storage means, wherein the monitoring data collecting means writes the operating data processing program from the monitoring device. Upon receiving a rewrite request signal, the arithmetic processing means can rewrite to the erroneous rewrite prevention means. A signal is output, and a rewriting permission signal is transmitted to the monitoring device.When the monitoring device receives the rewriting permission signal, the monitoring device transmits a rewriting start signal to the monitoring data collection unit, and the communication control unit Upon receiving the rewrite start signal, a communication interrupt signal is input to the erroneous write prevention circuit, and the erroneous write prevention circuit validates the rewritable signal and is stored in the electrically erasable storage means. The present invention is characterized in that the operating data processing program can be rewritten.

When the monitoring data collecting means receives a rewriting end signal of the operation data processing program from the monitoring device, the arithmetic processing means outputs a rewriting end enabling signal to the erroneous rewriting preventing means, and Transmitting a rewrite completion confirmation signal to the monitoring device, and when the monitoring device receives the rewrite completion confirmation signal, the monitoring device transmits a normal processing return signal to the monitoring data collection means, and the communication control means Upon receiving the processing return signal, a communication interrupt signal is input to the erroneous write prevention circuit, and the erroneous write prevention circuit validates the rewrite end enable signal and is stored in the electrically erasable storage means. It is characterized in that the operation data processing program cannot be rewritten.

[0011]

1 to 3 show an embodiment of the present invention.
This will be described with reference to FIG.

FIG. 1 is a diagram showing an overall configuration of an operation state monitoring device for a construction machine according to this embodiment.

In FIG. 1, reference numeral 1 denotes a monitoring data collection device mounted on a construction 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 construction machine, and 3 denotes a construction machine. An operation state detection unit 4 for detecting various operation states of the operation unit 4 processes the operation data detected by the operation state detection unit 3 into predetermined monitoring data, and outputs the monitoring data in response to a command from the monitoring device 2. A monitoring data collecting unit, 41 is an interface, 42 is a data bus, 43
The RAM 431 stores operation data detected by the operation state detection unit 3 and data such as monitoring data obtained by executing predetermined processing of the operation data.
Denotes monitoring data; 44, a non-electrically erasable mask ROM for storing a rewriting program for performing rewriting control of the processing program; 441, a rewriting program; and 45, a processing program for processing various operation data. An electrically erasable EPROM, 451 is a processing program, 46 is an MPU for performing arithmetic processing, 47 is a serial input / output unit (hereinafter referred to as SIO) for controlling communication, 48 is a communication interface, and 49 is stored in the EPROM 45. Erroneous rewriting prevention circuit for preventing destruction or erroneous rewriting of the processing program being executed, 491 is a latch circuit, 492 is a gate circuit, 5 and 6 are communication devices on the monitoring data collection device side and communication devices on the monitoring device side, respectively. Issue a command to the monitoring data collection device 1 to collect monitoring data,
Alternatively, a monitoring device processing unit that issues a processing program rewrite instruction to the monitoring data collection device 1, an input unit 8 for inputting various data and instructions, and a display unit 9 for displaying various data and the like. It is.

Each of the communication devices 5 and 6 is not limited to wireless, but may use other communication means such as a wire or a mobile phone. In addition, a monitoring device 2 installed in the construction machine and the management office
If the distance is long, it may be transmitted via a repeater (not shown).

The monitoring device 2 may be a device such as a personal computer that can issue a command to a construction machine and display the received data in an appropriate format. The operation state monitoring device of the construction machine normally operates as follows.

The operating state detecting section 3 detects operating data from each part of the construction machine at all times or as needed, and stores the detected operating data in the RAM 43. The stored operation data 431 is stored in the MPU 46 in the EPROM 45.
The predetermined arithmetic processing is performed according to the processing program 451 stored in the. Monitoring data 432
Are stored in the RAM 43. On the other hand, when it is necessary to obtain monitoring data from the monitoring device 2, a command input from the input unit 8 is issued to the operation data collection device 1 via the communication devices 6 and 5, and the operation data collection device 1 Outputs the monitoring data 432 stored in the RAM 43 to the display device 9 or the like of the monitoring device 2 via the communication means 5 and 6 in accordance with the command.

Next, the rewriting operation of the processing program stored in the EPROM 45 in the construction machine operating state monitoring apparatus of the present embodiment will be described with reference to FIGS.

FIG. 2 is a diagram showing the state of signals at various parts of the operation data collection device 1 shown in FIG. 1. In FIG. 2, serial data S1 as a command transmitted from the monitoring device 2 to the operation data collection device 1 is shown. To S5 are serial data S6 transmitted from the operation data collection device 1 to the monitoring device 2.
To S7 are port signals S8 output from the MPU 46 to the latch circuit 491, and
Interrupt signals S9 to S15 output to 91 and a rewrite enable / disable signal S16 output from the gate circuit 492 to the EPROM 45 indicate the operation status of the processing program and the rewrite program. Reference numerals shown in FIG. 2 correspond to signals flowing in portions shown in FIG.

Next, the rewriting operation of the processing program will be described.

When a command S1 requesting rewriting of the processing program 451 is transmitted from the monitoring device 2 to the operation data collection device 1, the MPU 46 sets the latch circuit 491
Output port output S8 (LOW level) to
The rewriting permission signal S6 is transmitted to the monitoring device 2.

On the other hand, SIO 47 has serial signals S1 to S
5 are output as interrupt signals S9 to S15.

When the monitoring device 2 receives the rewriting permission signal S6, it sends a rewriting start signal S2 to the operation data collecting device 1.
Send to When the operation data collection device 1 receives the rewrite start signal S2, the SIO 47 outputs an interrupt signal S10. The latch circuit 491 latches the LOW level of the port output S8 by the interrupt signal S10, outputs a rewritable signal from the gate circuit 492 to the EPROM 45, and allows the EPROM 45 to rewrite the processing program.

Thereafter, the monitoring device 2 sequentially transmits the new program data signal S3 to be rewritten to the operation data collection device 1. The MPU 46 sequentially outputs a program rewriting signal to the EPROM 45 via the gate circuit 492 to perform rewriting.

When all the program data signals S3 have been transmitted, the monitoring device 2 transmits a program transmission end signal S4. When the operation data collection device 1 receives the program transmission end signal S4, the MPU 46 sets the latch circuit 491
And outputs a port output S8 (HIGH level) to the monitoring device 2 and transmits an end confirmation signal S7 to the monitoring device 2.

When the monitoring device 2 receives the end confirmation signal S7, it finally sends the normal processing return signal S to the operation data collection device 1.
Send 5 When the operation data collection device 1 receives the normal processing return signal S5, the SIO 47 outputs an interrupt signal S15. The latch circuit 491 latches the HIGH level of the port output S8 in response to the interrupt signal S15, and outputs a rewrite disable signal from the gate circuit 492 to the EPROM 45.
And the rewriting of the processing program in the EPROM 45 becomes impossible. At the same time, the operation data collection device returns from the processing mode of the rewriting program to the processing mode of the normal operation data processing program.

Next, the procedure of rewriting the operation data processing program in the operation data collection device 1 will be described with reference to the flowchart shown in FIG.

Starting from the starter in step S100, an operation data processing program is executed in step S101. When data is received from the monitoring device 2 during execution of the operation data processing program, a reception interrupt process is executed in S102. In S103, it is determined whether or not the received data is a rewrite request command of the operation data processing program. If not, the execution of the operation data processing program is continued.
If it is a rewrite command, a rewrite program is started in S104. After the start of the rewrite program, the port output is output to the rewrite prevention circuit 49 as rewrite valid in S105. Next, a rewrite permission signal is transmitted to the monitoring device 2 in S106, and S107
Waits for a rewrite start command from the monitoring device 2. When the rewrite start command is received in S108, the rewrite permission signal output from the port by the interrupt signal output from the SIO 47 becomes valid at that time, and the EPROM 45 becomes writable. In S109, the operation data processing program is rewritten. After the rewriting is completed, the port output output to the rewriting prevention circuit 49 in S110 is prohibited from being rewritten,
In S111, a rewrite prohibition command is transmitted to the monitoring device 2, and in S112, the process waits for reception of a rewrite end command. In S113, when the rewrite end command is received, the rewrite prohibition output to the rewrite prevention circuit 49 is enabled by the interrupt signal at that time, and E
Writing to the PROM 45 is prohibited.

Thereafter, the process returns to the start of S100, and executes the rewritten new operation data processing program.

As described above, according to this embodiment, the operation data processing program can be safely and reliably rewritten with a simple circuit configuration, and the operation data processing program of the operation state monitoring device of the construction machine can be rewritten. It is extremely effective as a means.

[0030]

As described above, the construction machine operating state monitoring apparatus of the present invention can obtain, from the monitoring apparatus, monitoring data relating to the operating state stored in the monitoring data collecting apparatus, and, if necessary, According to the command from the monitoring device,
Since the program for processing the operation data can be changed, a monitoring method according to the circumstances of each management office can be selected, and it is possible to flexibly respond to various requests for a user's device.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an entire configuration of an operation state monitoring device for a construction machine according to an embodiment of the present invention.

FIG. 2 is a diagram showing a signal state of each unit of the operation data collection device 1 shown in FIG.

FIG. 3 is a flowchart showing a procedure for rewriting an operation data processing program in the operation data collection device 1 shown in FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 monitoring data collecting device 2 monitoring device 3 operating state detecting unit 4 monitoring data collecting unit 43 RAM 431 operating data 432 monitoring data 44 mask ROM 441 rewriting program 45 EPROM 451 processing program 46 MPU 47 serial input / output unit (SIO) 49 wrong Rewriting prevention circuit 5, 6 Communication device 7 Operation processing unit 8 Input unit 9 Display unit

Claims (2)

[Claims] A monitoring data collecting means for detecting operation data of the construction machine, processing and storing the monitoring data into predetermined monitoring data, and outputting the stored monitoring data in response to a command from a monitoring device; A communication means for transmitting and receiving to and from the monitoring device, a monitoring data collection device provided in a construction machine, a communication means for transmitting and receiving to and from the monitoring data collection device, Monitoring data obtaining means for outputting the command and obtaining the monitoring data,
And a monitoring device comprising: a monitoring device comprising: a monitoring device comprising: an operating state monitoring device for a construction machine, the monitoring data collecting unit comprising: an electrically erasable storage unit that stores at least an operating data processing program; Electrically non-erasable storage means for storing a rewriting program for executing program rewriting, and communication control means for inputting / outputting the various data to be transmitted / received and outputting a reception interrupt signal each time data is transmitted / received An arithmetic processing means for performing arithmetic processing on data in accordance with the operating data processing program or the rewriting program, and preventing destruction or erroneous rewriting of the operating data processing program stored in the electrically erasable storage means. Means for preventing erroneous rewriting, wherein the monitoring data collecting means comprises operating data from the monitoring device. When receiving the rewrite request signal of the processing program, the arithmetic processing means outputs a rewritable signal to the erroneous rewrite prevention means, and transmits a rewrite permission signal to the monitoring device. Upon receiving a rewrite permission signal, the communication control unit transmits a rewrite start signal to the monitoring data collection unit, and upon receiving the rewrite start signal, inputs a communication interrupt signal to the erroneous write prevention circuit, An erroneous write prevention circuit for enabling the rewritable signal to enable the operation data processing program stored in the electrically erasable storage means to be rewritten; apparatus. 2. The rewriting prevention unit according to claim 1, wherein the monitoring data collecting unit receives the operation data processing program rewriting end signal from the monitoring device, and the arithmetic processing unit can end the rewriting by the erroneous rewriting prevention unit. A signal is output, and a rewriting end confirmation signal is transmitted to the monitoring device. When the rewriting device receives the rewriting completion confirmation signal, the monitoring device transmits a normal processing return signal to the monitoring data collection unit, and the communication The control means, upon receiving the normal processing return signal, inputs a communication interrupt signal to the erroneous write prevention circuit, the erroneous write prevention circuit validates the rewrite end enable signal, and stores the electrically erasable storage. An operation state monitoring device for a construction machine, wherein the operation data processing program stored in the means is not rewritten.