JPS6244311B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

This invention is a construction machine that can separately record the latest operation data of dump trucks, loaders, and other construction machines during normal operation, which are sequentially updated, and operation data during abnormal conditions, separately in a card-type memory. The present invention relates to an operation recording device.

[Conventional technology]

For example, the daily operation report of construction vehicles, etc. becomes the basic data for vehicle maintenance management, and the presence or absence of abnormalities in each part of the vehicle by inspection of the vehicle from the start to the end of the work day, the operating hours of the day, and usage records of fuel, oil, etc. are simply expenses. This is important not only for basic calculation data, but also for predicting vehicle abnormalities. However, it is well known in the art to obtain this type of driving data using a mechanically driven tachograph. However, in the case of a tachograph, only the running speed and distance traveled are recorded in analog form, and furthermore, the data written on the recording paper must be read visually, making the reading, calculation, and storage extremely complicated. . For this reason, the recorded results are merely stored as vehicle operation records, and it is not possible to attempt to optimize driving methods or procedures based on the recorded results. In order to improve vehicle operation efficiency, it is necessary to identify problems and devise improvement methods based on the latest actual operation data, in other words, it is necessary to collect and analyze detailed and accurate operation data. In particular, when an abnormality occurs such as a collision, fall, runaway, or failure of a vehicle, it is necessary to record the operating data of the vehicle at that time separately from normal operating data in order to investigate the cause. In addition, conventionally, such card-type memory is commonly used with endless tape recorders, but in this case, the disadvantage is that it is not reliable in fields such as construction vehicles that are subject to strong vibrations because it is a mechanical recording method. . This invention was made as a result of intensive research in view of the above circumstances.
It is a new invention.

[Problems to be solved by the invention]

The main object of this invention is to update and record the operating data of each component during normal operation of heavy equipment to always record the latest operating data, and to separately record the operating data of each component of the construction machine at that time when an abnormality occurs. An object of the present invention is to provide a construction machine operation recording device capable of recording at high density at short sampling intervals.

[Means to solve the problem]

In order to achieve the above object, the present invention attaches a removable card-type memory to a data recording device mounted on a construction machine, and stores operating data of the construction machine detected by a sensor installed on the construction machine. Recording the operation data of the construction machine input from the external input means in the card type memory,
In a construction machine operation recording system in which the recorded card-type memory is attached to a data processing device installed in a management office and the recorded data is analyzed and processed, (a) a sensor installed in the construction machine , consists of a vehicle speed sensor, an engine rotation speed sensor, a fuel consumption sensor, an oil pressure sensor, an oil temperature sensor, and a vibration sensor. (b) The operation data calculated above is input and the value of each operation data is set in advance. (c) If the monitoring means determines that there is an abnormality, a control signal is output to activate the alarm means, and (d) the above-mentioned When it is determined that the abnormal value exceeds a preset value (danger value), a control signal is output and an emergency stop means is activated to stop the construction machine from running; (e) The monitoring means determines that there is an abnormality. (f) If the above monitoring means determines that there is an abnormality, the writing to the first memory is interrupted and the operation data at the time of abnormality is written to the first memory of the card type memory while being updated sequentially. This technical measure includes providing a data writing device for writing operating data into the second memory of the card type memory.

【Example】

Hereinafter, an embodiment in which the present invention is applied to a construction vehicle will be described with reference to FIG. The system of the present invention includes sensor means 1 as a vehicle-mounted device for obtaining operating data of each component of the vehicle using parameters. The illustrated sensor means 1 includes an hour meter 1-1 for accumulating engine operating time, a speed meter 1-2 for detecting vehicle running speed, an engine tachometer 1-3 for detecting engine speed, and a fuel consumption meter. a fuel consumption meter 1-4 that detects the amount of fuel consumption, a pressure gauge 1-5 that detects the oil pressure value of the hydraulic system, an oil temperature gauge 1-6 that detects the temperature of the pressure oil in the hydraulic system, and the amount of vibration of the construction machine. It consists of vibration amounts 1-7 for detecting. Such sensor means 1 are connected to a data recording device 6. The monitoring means 3 is comprised of a determination circuit that determines whether the detected data is abnormal or not and whether it is abnormal (dangerous) requiring a top plate support frame based on the input signal from the sensor means 1, and the output terminal is an alarm circuit. means 4, emergency stop means 5, and data recording device 6;
Connected to each CRT13. The input section of the data recording device 6 is connected not only to the monitoring means 3 but also to an external input means 8 such as a keyboard, and is equipped with a memory 6-1 for temporarily storing input data from them. Digital data is electronically written into the card type memory 7. The card type memory 7 is a memory 7-1 for normal data, which serves as the first memory during normal operation of the vehicle.
and a memory 7-2 for data during abnormal operation, which serves as a second memory, and is inserted and set in a read/write section of the data recording device 6 in a freely insertable/removable manner. In the normal data memory 7-1, time-series data of components during normal operation of the vehicle is digitally recorded by the recording device 6.
In this case, the time-series data is sequentially written and updated to the latest operating data in the memory 7-1 in a first-in, first-out manner starting from the first address. The write update is interrupted when an abnormality in the vehicle is detected, and the abnormality data in this case is written to the abnormal data memory 7-2, which is different from the normal data memory 7-1. ing. Such card type memory 7 is an IC in this embodiment.
It is made up of cards. The above is a system that is installed on the vehicle side, and a reading and reproducing device 10 as a data processing device for processing data written in the card type memory 7 is installed in this type of vehicle operation management office and the like. This reading/reproducing device 10 includes a reading function section (decoder) 10-1 for reading data written into a card-type memory 7 which is removably inserted therein.
and an arithmetic function section 10-2 for arithmetic processing of input data from the function section, and a D/A converter 1 at its output terminal.
The terminal equipment 12 is connected via 1. The illustrated terminal device 12 is an X-Y plotter 12.
A and a printer 12B. In the above, the vehicle-side system is started by starting the vehicle-mounted engine. In this case, a card type memory 7 is inserted and set in the data recording device 6 in advance. When the system starts in this state, that is, at the same time as the engine starts, the date and time are first recorded in the memory 7-1 of the card type memory 7 by the clock mechanism provided in the data recording device 6. When the engine is started and the vehicle is running, the sensor means 1 detects time-series data of vehicle components such as engine speed, fuel consumption, temperature and pressure of the hydraulic system, traveling speed, and amount of vibration of the vehicle body. Among the detected signals, the A/D converter 2 converts the A/D converter 2 into a digital amount and inputs the converted data into the data recording device 6. The monitoring means 3 determines whether an abnormality has occurred in any of the vehicle components based on the input data. As a result of the determination, if no abnormality has occurred in any of the vehicle components, the normal operation data of the vehicle with which the check timer signal was synchronized at that time is
Played on CRT13. At the same time, the normal operation data is input by the recording device 6 and written into the normal data memory 7-1 of the recording device 7 via its own memory 6-1. The writing continues unless an abnormality occurs in the vehicle component. In this case, since the normal data memory 7-1 is sequentially written and updated in a first-in/first-out manner from the first address as described above, the latest normal operation data is always stored in the memory 7-1. be done. In the process of writing such normal operation data,
When the monitoring means 3 determines that there is an abnormality in the vehicle component when the detection signal detected from the sensor 1 exceeds a preset abnormal value, an abnormality occurrence signal is output to the reading/writing section and written to the data memory 7-1. update is interrupted. At the same time, the operating data determined to be abnormal is written to the abnormal data memory 7-2, which is different from the normal data memory 7-1 in the card type memory 7, at an interval shorter than the sampling interval of the normal operating data. rare, high density recording and CRT
13 is also displayed. Further, the monitoring means 3 activates each of the alarm means 4 and the emergency stop means 5 based on the abnormality occurrence signal. That is, if the movement data detected by the sensor means 1 exceeds a predetermined value and is determined to be abnormal, a control signal is output to the alarm means 4 to issue an alarm. Further, if it is determined that the degree of abnormality exceeds a predetermined value, a control signal is output to the emergency stop means 5. This emergency stop means 5 is comprised of a known vehicle stop control component stage that operates an actuator to perform brake braking when a control signal is input. In this manner, when the engine is stopped at the end of the vehicle operation or when an abnormality occurs in a vehicle component, the date and time of the end of the operation or the date and time of the occurrence of the abnormality and the operating time are written in the card type memory 7 mentioned above. In addition to the above-mentioned operation date and time of the vehicle, component time series data, operation end date and time, or abnormality occurrence date and time, and operation time, the card type memory 7 also stores the data recording device 6 by external input means 8.
For example, vehicle inspection and maintenance data such as refueling date and oil change date and time, the number of times of cargo handling and transportation, amount of work, repair data, etc., which have been artificially input into the system, are also electronically written as digital quantities by the recording device 6. Therefore, the card type memory 7 records not only normal operation data and abnormal operation data of the vehicle, but also related data. The card type memory 7 is taken out from the data recording device 6 by a vehicle operator and brought back to a management office or the like, where it is loaded onto the reading/reproducing device 10. In this case, when the card type memory 7 is inserted into the decoder 10-1 of the device 10 and set, all data written in the memory 7-1 is recalled. This call data is transmitted from decoder 10-1 to arithmetic function section 10-2. When all the input data is normal operation data of the vehicle, the calculation function unit 10-2 calculates the maximum speed, average speed, and total travel speed table of the vehicle based on the data.
All the latest data related to vehicle operation written in the normal data memory 7-1 of the card type memory 7, such as instantaneous acceleration and engine wear information, are calculated and reproduced. If data is also written in the abnormal data memory 7-2 of the card-type memory 7, that data can also be input to determine the vehicle's abnormal acceleration, maximum inclination angle, and time until engine stop based on that data. Calculate and reproduce the progress. The resulting data is output by each of the X-Y plotter 12A and printer 12B. Further, the data written in the card type memory 7 is electronically transferred to another large capacity card type memory such as a floppy disk or magnetic tape that can store even larger information via the reading function section 10-1 of the data processing device 10. It is also possible to transfer to.
In this case, there is an advantage that the operation data of a large number of operating vehicles can be centrally managed. Note that it is also possible to store vehicle operating procedures in the card-type memory 7 in advance. Further, the card type memory 7 may be composed of a light modulation disk on which a program can be input.

【Effect of the invention】

As described above, according to the present invention, normal operation data and abnormal operation data of heavy machinery such as vehicles are recorded separately in a card type memory such as an IC card, so normal operation data is used to examine the necessity of maintenance, etc. The data can be used as data for investigating the cause of failures using operational data during abnormal situations. In addition, both can be recorded using different recording methods, so for example, operational data during abnormalities can be recorded at short intervals with high density, and normal operational data can be recorded at long intervals and used for each data processing. It can be beneficial. Further, since the normal operation data is sequentially updated when it is recorded in the card-type memory, the heavy equipment manager can obtain data indicating the latest operation status of the construction machine using the card-type memory. Furthermore, since card-type memory has an all-solid-state element configuration, it is maintenance-free and is ideal as a recording medium for construction machinery that is subject to severe vibrations, providing reliable data.

[Brief explanation of the drawing]

The drawing is a block diagram showing an embodiment of the construction machine operation recording system of the present invention. DESCRIPTION OF SYMBOLS 1...Sensor means, 3...Monitoring system, 6...Data recording device, 7...Card type memory, 7-1...Memory for normal data, 7-2...
Memory for abnormal data.

Claims (1)

[Scope of Claims] 1. A removable card-type memory is attached to a data recording device mounted on a construction machine, and operation data of the construction machine detected by a sensor installed on the construction machine and external input means are provided. The operating data of the construction machine inputted from the above is recorded in the card-type memory, and the recorded card-type memory is attached to a data processing device installed in the management office to analyze and process the recorded data. In the operation recording system for construction machinery, the sensors installed on the construction machinery consist of a vehicle speed sensor, an engine rotation speed sensor, a fuel consumption sensor, an oil pressure sensor, an oil temperature sensor, and a vibration sensor. Each operating data is calculated based on the detected signal and recorded in the card-type memory, and the calculated operating data is input to set the value of each operating data to a preset value (abnormal value). A monitoring means that determines an abnormality when the value exceeds a predetermined value (danger value), an alarm means that activates when the monitoring means determines that the abnormal value exceeds a preset value (danger value), and a warning means that activates when the abnormal value exceeds a preset value (danger value). an emergency stop means for stopping the running of the machine vehicle; a first memory in which normal operation data is sequentially updated and written when the monitoring means does not determine that there is an abnormality; and when the monitoring means determines that there is an abnormality. An operation recording device for construction machinery, characterized in that a data writing device is equipped with a card-type memory having a second memory in which operation data in the event of an abnormality is written by interrupting writing to the first memory. .