JP2953137B2 - Construction work management device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction work management apparatus and, more particularly, to a construction work management apparatus for detecting the level of vibration during the operation of a construction machine to manage the working status of a construction worker operating the construction machine.

[0002]

2. Description of the Related Art Conventionally, as a method for efficiently and economically managing the operation of construction machines, there is an apparatus described in Japanese Patent Application Laid-Open No. Sho 59-172888. This device includes, for example, data indicating the state of each part in the machine, such as the number of work times and mileage of construction machines, the number of times the dump truck has been moved up and down, the bulldozer pushing time, the number of times the power shovel has been operated, the driver number, and the time of attendance Data that shows the working status of the driver, such as, is managed. And this device records these data, and based on these data,
It performs rational process management, work plan drafting, economical maintenance management, maintenance parts management, work management, and the like.

According to this construction machine management device, the employment status of the driver is managed at the clock-in and clock-out times, so that the true working time cannot be grasped. Therefore, it is conceivable to detect the work state and estimate the working state of the worker by using the data. For example, it is possible to determine whether or not the work is being performed by detecting the work state of the machine, the operation state of the engine, and the like accompanying the drive of the construction machine. This example will be described with reference to FIG. FIG. 7 shows the appearance of a conventional construction work management device. This construction work management device includes a main body 51, a contact-type IC card 52 detachably provided to the main body 51, a cable 53 having one end connected to the main body 51, and various types connected to the other end of the cable 53. The configuration includes a sensor 54 (indicated by one sensor in FIG. 7) and an operation key 55 provided on the upper surface of the main body 51.

The main body 51 is arranged, for example, in the driver's seat of a construction machine with a bulldozer, while various sensors 54
It is located at each location of the construction machine that can detect data.
For example, a vibration sensor is installed in or near the engine room of a construction machine. The vibration sensor detects the vibration of the engine generated by the operation of the construction machine, converts the vibration into an electric signal, and transmits the electric signal to the main body 51 via the cable 53. I do.
The main body 51 converts the electric signal into a digital signal and generates vibration data. This vibration data is written on the contact type IC card 52 connected to the main body 51. The transmission and reception of data between the IC card 52 and the main body 51 are performed via contact terminals.

[0005]

However, in the conventional construction work management device, the vibration sensor 54 is
The vibration sensor 54 is provided outside the main body 51.
Therefore, the construction work management device has a problem of poor portability.

In addition, since the contact type IC card 52 is used, the main body 51 needs to be arranged in a place where the vibration is not directly received in order to avoid a poor electrical contact between the IC card 52 and the main body 51 due to the vibration of the construction machine. There is. On the other hand, the vibration sensor 54 needs to be arranged near the engine room, which is a vibration source, in order to detect the vibration of the construction machine. That is, it is necessary to separately arrange the vibration sensor 54 and the main body 51 at predetermined positions, and there is a problem that the installation requires a complicated operation. Practically, the installation location is fixed due to wiring or the like, and it has been difficult to arbitrarily move the installation location.

Further, there is a problem that extraneous noise generated by a construction machine or the like is mixed in the cable 53 connecting the vibration sensor 54 and the main body 51, which may cause a malfunction of the construction work management device.

[0008]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a construction work management apparatus which is excellent in portability, can be easily installed, and can prevent malfunction.

[0009]

According to a first aspect of the present invention, there is provided a construction work management apparatus for detecting a vibration generated by a construction machine and converting the vibration into an electric signal, and a time data indicating a date and a time. A control device including a work data generating unit that generates work data according to the electric signal output from the vibration sensor and the time data,
A card holder unit having a reader / writer having one or more first induction coils for transmitting and receiving the work data, the card holder unit being detachable from the card holder unit;
1 that transmits and receives the work data through the induction coil
One or a plurality of second induction coils and an IC card having a memory for writing the work data received by the second induction coils are housed in a case.

A construction work management apparatus according to a second aspect of the present invention is the construction work management apparatus according to the first aspect, wherein the control device is configured to output an initial value setting means for setting a threshold level and the vibration sensor. Comparing means for comparing and judging the electric signal with the threshold level, wherein the work data generating means generates the work data according to the result of the comparison and the time data. And

According to a third aspect of the present invention, there is provided a construction work management apparatus according to the second aspect, wherein the initial value setting means includes a plurality of predetermined plurality of types of construction machines. It is characterized in that one of the threshold levels is selected to set the threshold level.

According to a fourth aspect of the present invention, in the construction work management apparatus according to the first aspect, the IC card holds a plurality of threshold levels set corresponding to a plurality of types of construction machines. Then, the data generation means performs a comparison judgment between the electric signal output from the vibration sensor and the threshold level, and generates the work data according to the result of the comparison judgment and the time data. I do.

[0013]

According to the first aspect of the present invention, a construction work management device is provided on a construction machine. When an operator operates a construction machine and performs work, the vibration generated by the construction machine is converted into an electric signal by a vibration sensor. The work data generating means generates work data from the electric signal and the time data. The work data is written on the IC card held in the card holder. At this time, even if the vibration generated by the construction machine is transmitted to the IC card and the card holder, the work data is transmitted from the IC card holder to the IC card in a non-contact state.
No writing failure occurs due to this vibration.

Further, since the vibration sensor is provided in the case, the vibration sensor or the like does not interfere when the construction work management device is carried. In addition, since it is not necessary to separately install the vibration sensor and the case on the construction machine, the installation becomes easy. Furthermore, since the vibration sensor is stored in the case, external noise generated by construction machinery, etc.,
It is possible to prevent the vibration sensor and the signal path between the vibration sensor and the work data generating means from being mixed into the vibration sensor.

[0015]

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

FIG. 1 is a side view of a construction work management apparatus 1 according to a first embodiment of the present invention, with a part thereof cut away.
FIG. 2 is a top view of the construction work management device 1, and a part of the device is shown in perspective. FIG. 3 is a diagram showing the internal configuration of the construction work management device 1 as viewed from the bottom.

The construction work management device 1 shown in FIGS. 1 and 2
In FIG. 1, an IC card holder 11 is disposed on the upper surface of a rectangular parallelepiped case 10.
A non-contact type IC card (not shown) is detachably held at 1. The IC card holder 11 has a door 111 which can be opened and closed about a shaft 12 provided in the case 10 as a rotation axis, and three induction coils 113. These induction coils 113 transmit and receive data to and from the IC card in a non-contact state and supply power to the IC card.

As shown in FIG. 2, on the upper surface of the case 10, an operation switch 135 used to input data to the construction work management apparatus 1, a display unit 136, a power switch 131, a construction switch LEDs 132 and 133 for displaying the operation status of the work management apparatus 1 and an eject button 134 for opening and closing the door 111 are provided.

As shown in FIG. 3, the interior of a case 10 of the construction work management device 1 includes a vibration sensor 12, a control unit for controlling the operation of the construction work management device 1, a clock and the like. A control unit 14, a power supply module 15,
Are arranged. A vibration sensor 12 such as an acceleration sensor is fixed to a predetermined position on the inner surface of the case 10. The vibration sensor 12 has a function of detecting mechanical vibration generated by the construction machine via the case 10 and converting the vibration into an electric signal. The power supply module 15 supplies a current required when the construction work management device 1 operates. Instead of the power supply module 15, it is also possible to supply a current from outside via an external power supply terminal 16 provided on the side surface of the case 10.

FIG. 4 shows a construction work management apparatus 1 according to this embodiment.
Is a block diagram showing a case where is configured as the function realizing means. As shown in this block diagram, the construction work management device 1 includes an IC card 2, a control unit 21, a clock 22
And an operation unit 23 including the operation switch 135 and the display unit 136, the vibration sensor 12, the power supply module 15, and the interface 24.

The vibration sensor 12 detects the vibration of the construction machine and converts the vibration into an electric signal. Further, the electric signal is converted into vibration data which is a digital signal by the control unit 21. A threshold level indicating a threshold value of the vibration data is input from the operation unit 23, and the threshold level is stored in the control unit 21. The control unit 21 performs the work including the vibration data and the time data output from the clock 22 only when the vibration data changes according to the vibration of the construction machine and exceeds or falls below the threshold level. Generate data. This work data is written to the IC card 2 via the interface 24. That is, the work data is written into the IC card 2 only when the vibration data changes across the threshold level. The working status of the worker is determined based on the work data written on the IC card 2. The IC card 2 includes a CPU, a memory, and an induction coil used for transmitting and receiving data and for transmitting and receiving power. Data is transmitted and received from the interface 24 via the induction coil.

The clock 22 is connected to the power supply module 15.
Power switch 13
The operation continues even after 1 is turned off. The interface 24 includes the induction coil 113, and transmits and receives data to and from the IC card 2.
In addition, power is supplied to the IC card 2. I
Since the transmission and reception of data between the C card 2 and the interface 24 are performed in a non-contact manner, even if the construction work management apparatus 1 is subjected to the vibration of the construction machine, no poor electrical contact occurs. Therefore, the vibration sensor 12 is
0, the work data is normally written to the IC card 2 even if the case 10 is installed near the engine room of the construction machine. Therefore, interface 2
There is no need to provide an anti-vibration device in the fourth. Note that an external interface may be provided in the construction work management device 1 to connect an external device (for example, a printer or the like).

FIG. 5 shows a construction work management apparatus 1 according to this embodiment.
6 is a graph showing a change over time of vibration data at. In this graph, the horizontal axis represents time, and the vertical axis represents the value of vibration data. It is assumed that three threshold levels A, B, and C are set in advance. When the engine of the construction machine on which the construction work management device 1 is installed is inactive,
Since the vibration sensor 12 does not detect vibration, the vibration data remains substantially zero (T0). When the operator starts the engine of the construction machine, the value of the vibration data increases, and the threshold level A
(T1). The control unit 21 generates work data from the time T1 and the vibration data, and transfers the work data to I
Write to C card 2. Subsequently, when the worker runs the construction machine, the rotation speed of the engine of the construction machine increases, and the vibration data exceeds the threshold level B (T2). Working data is generated from the time T2 at this time and the vibration data,
This work data is written to the IC card 2.

Further, when the worker performs the construction work using the construction machine, the rotation speed of the engine further increases, and the value of the vibration data exceeds the threshold level C. At this time, the time T3 and the vibration data are written to the IC card 2. Similarly, when the vibration data has passed the threshold levels A, B, and C, the work data generated from the respective vibration data and times T4, T5, and T6 are written to the IC card 2.

That is, the vibration data at the time of passing these threshold levels and the time at this time are stored in the IC card 2
Is written to. Therefore, the vibration data is sampled at regular intervals, and the sampled vibration data is
According to the present embodiment, I
The number of vibration data written on the C card 2 can be reduced. Therefore, there is an effect that the capacity of the internal memory of the IC card 2 can be reduced. Further, since the threshold level differs depending on the construction machine to be installed, the threshold level is recorded in advance in a memory (not shown) of the IC card 2 according to a plurality of types of construction machines, and can be selected when the construction machine is operated. Alternatively, the threshold level corresponding to the construction machine may be automatically selected when the IC card is mounted on the IC card holder 11 of the construction work management device.

Next, the operation of the construction work management apparatus 1 such as generation of work data will be described with reference to the flowchart shown in FIG.

First, the construction work management device 1 is installed in a place where vibration is generated, such as an engine room of a construction machine. Since the vibration sensor 12 is built in the construction work management device 1, only the construction work management device 1 needs to be installed in the construction machine. The power switch 131 of the construction work management device 1 installed in the construction machine is turned on (S1). Then, the control unit 21 transfers the threshold level written in the internal nonvolatile memory, the current time data, and the like to the work area on the RAM, and performs initialization (S2). At this time, if it is necessary to correct the threshold level or the time data, the data is corrected using the operation keys 135 (S
3, S4). The reason why the worker does not perform the work can be input using the operation keys 135. For example, as the above-mentioned reason, work suspension, break, or maintenance, repair, or breakdown of a construction machine may be coded and input. Further, the threshold level, the time data, the reason for work suspension, and the like may be input from an external device such as the IC card 2 to the construction work management device.

When the initial setting is completed, the operator starts the engine of the construction machine to start the construction work (S
5). Here, it is determined whether or not the IC card 2 has been inserted into the IC card holder 11 of the construction work management apparatus by the operator (S6). If the IC card 2 has not been inserted (NO in S6), the IC card 2 Continue to wait for insertion. If the IC card 2 is inserted into the IC card holder 11 of the construction work management device 1 (YES in S6), the construction work management device 1 reads out the ID code written on the IC card 2.

The control unit 21 determines that the read ID code is
It is determined whether the ID code matches the ID code registered in the construction work management device 1 in advance (S7). If the result of the determination is that the ID code of the IC card 2 does not match the ID code registered in the construction work management device 1 (NO in S7), the I
The C card 2 is ejected from the IC card holder 11 (S
8) End the operation. By registering the ID of only a person who is qualified to operate the construction machine in the construction work management device 1, it is possible to exclude a person who is not suitable for working the construction machine. Further, the ID code can be input from the operation keys 135.

The ID in which the ID code of the IC card 2 is registered
When the control unit 21 determines that they match the D code (S
7 (YES), the control unit 21 detects the vibration data detected from the vibration sensor 12 and reads the time data from the clock 22 (S9). When the detected vibration data passes through the threshold level as a result of the worker performing the work, the control unit 21 generates work data including the vibration data and time data at this time (S10). The interface 24 writes this work data in the memory of the IC card 2 (S11).

Then, the worker determines whether or not the work is completed (S12). Unless the construction work is completed (S12
NO), the processes in S9 to S10 are continuously executed. When the construction work is completed (YES in S12), the IC card 2
Is discharged from the IC card holder 11 (S13), and the operation ends. The IC card 2 on which the work data has been written in this way is extracted from the IC card holder 11 and carried by an operator to an office or the like. The host computer in the office reads out the work data of the IC card 2, and determines the working status of the worker based on the work data. In this way, the employment status of a plurality of workers is centrally managed, and wages are paid to each worker.

As described above, according to this embodiment, the vibration sensor 12 for detecting the vibration of the construction machine is built in the construction work management device 1. Therefore, it is superior to the conventional construction work management device in which the vibration sensor and the main body are connected via a cable in the following points.

The construction work management device according to the present invention is characterized in that it is excellent in portability since only the construction work management device main body needs to be carried. Also, since only the construction work management device main body needs to be installed on the construction machine, it has a feature that the installation is easy. Furthermore, since the wiring between the vibration sensor 12 and the control unit 21 is performed inside the construction work management device, it is possible to prevent the construction work management device from malfunctioning due to the entry of external noise into the wiring portion.

In the above embodiment, the IC card 2
However, as long as the work data is a storage medium having a non-contact type input / output means, a memory card without a CPU or the like may be used. Furthermore, the same effects as the above effects can be obtained by installing and using the present construction work management device on a cargo handling machine other than the construction machine.

[0035]

As described above, according to the present invention, it is possible to provide a construction work management apparatus which is excellent in portability, easy to install, and capable of preventing malfunction.

[Brief description of the drawings]

FIG. 1 is a side view, partially broken away, of a construction work management device according to a first embodiment of the present invention.

FIG. 2 is a top view showing the construction work management device according to the first embodiment of the present invention.

FIG. 3 is a bottom view showing a state in which a bottom plate is removed in the construction work management device according to the first embodiment of the present invention.

FIG. 4 is a block diagram showing functions of the construction work management device according to the first embodiment of the present invention.

FIG. 5 is a graph showing a change over time of data related to vibration of the construction work management device according to the first embodiment of the present invention.

FIG. 6 is a flowchart showing the operation of the construction work management device according to the first embodiment of the present invention.

FIG. 7 is a perspective view showing an appearance of a conventional construction work management device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Construction work management apparatus 2 IC card 10 Case 11 IC card holder 12 Vibration sensor

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-73746 (JP, A) JP-A-63-265383 (JP, A) JP-A-2-82381 (JP, A) JP-A-2- 132581 (JP, A) JP-A-4-277892 (JP, A) JP-A-4-123472 (JP, U) JP-A-62-293271 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G06K 17/00 G07C 3/00-7/00

Claims (4)

(57) [Claims] 1. A vibration sensor that detects vibration generated by a construction machine and converts the vibration into an electric signal, a clock that outputs time data indicating date, time, etc., an electric signal output from the vibration sensor and the time data A card holder unit having a reader / writer having one or a plurality of first induction coils for transmitting and receiving the work data; and a card holder having the reader / writer for transmitting and receiving the work data. One or a plurality of second induction coils that are detachably attached to the unit and transmit and receive the work data via the first induction coil, and a memory that writes the work data received by the second induction coil. IC provided
A construction work management device, wherein a card and a card are stored in a case. 2. The control device according to claim 1, further comprising: an initial value setting unit configured to set a threshold level; and a comparison determining unit configured to compare and determine an electric signal output from the vibration sensor with the threshold level. 2. The construction work management device according to claim 1, wherein the data generation means generates the work data in accordance with a result of the comparison and the time data. 3. The method according to claim 2, wherein the initial value setting means selects one of a plurality of predetermined threshold levels corresponding to a plurality of types of construction machines and sets the threshold level. The construction work management device according to claim 2, wherein 4. The IC card holds a plurality of threshold levels set corresponding to a plurality of types of construction machines, and the data generating means includes an electric signal output from the vibration sensor and the threshold level. 2. The construction work management apparatus according to claim 1, wherein the work data is generated in accordance with a result of the comparison and the time data.