JP2002056050A - Recorder for work contents - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recorder for work contents capable of accurately recording the work contents of each working group without taking time in the work management of a construction site, etc. SOLUTION: Microphones 10A, 10B, etc., are attached to respective workers A, B, etc., working sound is collected and fetched to a working sound signal inputting part 14. A filter 18 divides the working sound into a plurality of frequency bands and inputs the working sound to an operating part 22. The operating part 22 detects the change of the sound pressure level of each frequency band, discriminates the work contents performed by the workers on the basis of the frequency band in the case a change is made and records the work contents.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work content recording device, and more particularly, to a work content recording device for recording the content of work performed by a worker during construction such as installation of a pipe, installation of an air conditioner, and construction of a building.

[0002]

2. Description of the Related Art In work management at a construction site or the like, it is important to grasp and record the contents of work performed by a worker on a daily basis. However, at the construction site, the products do not flow like factory production, so they cannot be counted on the spot. Also, supervisors have to walk around the site to record the work of the day for each work group or worker. Therefore, in the past, a daily report was obliged to each work group, and the work performed on that day was recorded and submitted.

[0003]

However, in the conventional method, there is a problem that the recorded contents are insufficient and the counting is very troublesome. If a system in which workers directly input data to machines is introduced in order to simplify counting, a problem arises in that, when there are many work groups, many machines are required. Further, even if a method of reading a daily report by a machine is adopted, there is a problem that the contents of work of each work group cannot be accurately recorded because the contents of the record vary depending on the writer.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a work content recording device capable of accurately recording the work content of each work group without any trouble.

[0005]

According to one aspect of the present invention, there is provided a work content recording apparatus for recording the contents of a work performed by a worker. A work sound detecting means for detecting a work sound to be performed; a work content determining means for determining a work content based on the work sound detected by the work sound detecting means; and a work content determined by the work content determining means. Recording means for performing the operation.

[0006] The invention described in claim 2 is the invention according to claim 1.
In the invention described in the above, the work content discriminating means includes a frequency characteristic of the work sound detected by the work sound detecting means and a frequency characteristic of the work sound stored as data in advance for the work content to be determined. On the basis of the detected work sound, the work content is determined.

[0007] Further, the invention according to claim 3 is based on claim 2.
In the invention described in the above, the frequency characteristic of the work sound is characterized by a difference in sound pressure level of each frequency band when the work sound is separated into a plurality of frequency bands. The work sound detected by the detecting means is separated into the frequency bands, and the work content is determined by detecting a change in the sound pressure level in each frequency band.

According to the present invention, attention is paid to the work sound generated when performing the work, the nature of the work sound that varies depending on the work is grasped by the change in the sound pressure level and the frequency characteristic, and the work is automatically determined. Therefore, the work content of each work group can be accurately recorded without any trouble.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a work content recording apparatus according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 shows a configuration of each means for determining a work in a work content recording apparatus according to the present invention, and FIG.
The operation flow is shown. First, the work sound is collected by the sound collecting means (microphone) in FIG. 1 (step S in FIG. 2).
1) The collected sound is separated into frequency bands related to the work sound of each work by the frequency band separation means (hereinafter, referred to as a filter) in FIG. 1 (step S2 in FIG. 2).
Next, a change in the signal level in each frequency band is detected by the sound pressure level change detecting means in FIG. 1 (step S in FIG. 2).
3) Based on the change, it is determined whether or not the work is being performed by the work determination means in FIG. 1 (step S4 in FIG. 2).

FIG. 3 shows an example in which collected sounds are separated into frequency bands related to the work sound of each work, and the work is discriminated. As shown in the figure, the working sound of the chain block operation is a (Hz) or less, and the working sound of the grinder is a (H).
Assuming that the welding operation sound is equal to or higher than b (Hz) between z) and b (Hz), it is possible to determine each operation from the collected frequency characteristics. For example, when a plurality of grinders are working, it is determined as one grinder work. If grinder work is done far and near the microphone,
It is determined that the sound pressure level is high.

FIG. 4 is an overall configuration diagram showing an embodiment of a work content recording device when a microphone as a sound pickup device (sound pickup means) is attached to an operator. As shown in FIG. 1, microphones (sound collecting microphones) 10A, 10B,... Are attached to the workers A, B,. A transmitter 12A for wirelessly transmitting
12B,... Are attached. The work sound signal input unit 14 has a receiver 16 for receiving a sound signal transmitted from each worker, and converts the sound signal to a sound frequency band related to each work as shown in FIG. A filter 18 for separation;
An A / D converter 20 for converting an analog signal obtained from the filter 18 into a digital signal is provided. The calculation unit 22 indicates a signal processing device such as a personal computer, and performs a work determination based on data obtained from the work sound signal input unit 14 as described later and records the work content (see FIG. 5). Data necessary for the work determination is recorded in the database unit 24, and is appropriately referred to by the calculation unit 22 as described later. The database unit 24 includes the arithmetic unit 22
The work content determined in step is recorded. The output unit 26 is provided with a general printer, a display, and the like that output a calculation result and the like.

FIG. 6 is a flowchart showing an operation flow of the work content recording apparatus having the configuration of FIG. First, the microphone 1 attached to each worker A, B, ...
0A, 10B,... (Step S1)
0), the signals of the collected sounds are transmitted to the transmitters 12A, 12B,
.. To transmit to the site office using wireless communication (step S12). The transmitters 12A, 12 of the workers A, B,...
The sound signals transmitted from B,... Are received by the receiver 16 of the work sound signal input unit 14 at the site office, and then the frequency of the sound associated with each work as shown in FIG. Bands are separated (step S1
4). At this time, the operation of the database unit 24 and the work sound frequency band collation database are referred to. In this database, data associating the operation and the frequency band as shown in FIG. 3 is created in advance, and the cutoff frequency of the filter 18 is set to the value of the data. Thereafter, the data is converted from analog to digital by the A / D converter 20 (step S16), and input to the arithmetic unit 22.

The arithmetic section 22 first compares the change in the signal level of the sound in each frequency band (step S18), and determines whether the signal level of the sound in each frequency band has changed (step S20). If NO, the arithmetic unit 22 repeats the process of step S18, and if YES,
The operation is determined from the frequency band in which the signal level has changed as follows.

As shown in FIG. 7A, a work group and work contents of the day are recorded in the work instruction database for each group in the database unit 24 as shown in FIG.
The operation unit 22 refers to the group-based daily work instruction database to recognize the tool used on the day from the work content on the day. Then, the frequency band of the work sound generated by the tool, that is, the frequency band of the scheduled work is confirmed by referring to the work and work sound frequency band collation database (step S22). Thus, it is possible to determine from the work sound signal whether work to be performed on that day is being performed.

Next, it is determined whether the frequency band determined to have changed in the signal level in step S20 is the frequency band of the scheduled work confirmed in step S22 (step S24). YES, that is, FIG.
If the work is on schedule as in (b), the work, the work time and the work time are stored in the database unit 24 as shown in FIG.
Is recorded as work content recording data (step S2).
6). On the other hand, if the result is NO, that is, if the work is unscheduled, the frequency band of the corresponding work sound is searched from the work and work sound frequency band collation database (the work is estimated from the frequency band where the signal level has changed) (step). S28), the corresponding work, the work time, and the work time are recorded in the database unit 24 as work content recording data (step S2).
6). The calculation unit 22 repeats the processing from step S18 to step S28.

FIGS. 9 and 10 show a case where the above-described work determination method is applied to work analysis. FIG. 9 shows a case where the work sound is recorded on the recording medium at the site, and the signal recorded on the recording medium is reproduced at the site office to determine the operation. FIG.
Is a case where the transmitted work sound signal is converted into a digital signal, recorded on a data recording medium, and analyzed later. Although the configuration of FIG. 4 can be used for work analysis, FIGS.
It is also possible to easily record the contents temporarily by recording them temporarily on a recording medium like "0", analyze the work, and record the contents.

In the above embodiment, when the frequency band of the work sound signal is separated, the signal is converted by an analog filter before the signal is converted from analog to digital. However, after the signal is converted from analog to digital. There is no problem with using a digital filter.

In the embodiment of the present invention, the separation of the frequency band of the working sound signal is performed after the signal is received, but may be performed before the signal is transmitted.

Further, in the above embodiment, the work content is determined based on the difference in sound pressure level with respect to each work content in the frequency band of the work sound. The determination may be made based on a difference in other frequency characteristics of the work sound, a difference in the overall loudness of the work sound, or the like.

[0021]

As described above, according to the work content recording apparatus according to the present invention, attention is paid to the work sound generated at the time of performing the work, and the work is automatically discriminated from the nature of the work sound. In addition, the work contents of each work group can be accurately recorded.

[Brief description of the drawings]

FIG. 1 is a configuration explanatory diagram of means for implementing a work determination method which is a function of a work content recording device.

FIG. 2 is an explanatory diagram of an operation flow for performing work determination;

FIG. 3 is an explanatory diagram of a work discriminating method based on frequency characteristics of work sounds.

FIG. 4 is an embodiment of the work content recording apparatus according to the present invention, and is an explanatory diagram when a sound collecting microphone is attached to a worker;

FIG. 5 is a configuration explanatory diagram of a calculation unit of the work content recording device.

FIG. 6 is an operation flowchart of the embodiment of FIG. 4;

FIG. 7 is a diagram showing an example in which a work sound and a daily work instruction are collated.

FIG. 8 is a diagram showing an example in which work contents are recorded.

FIG. 9 is a diagram showing an example in which the work determination method according to the present invention is applied to work analysis.

FIG. 10 is a diagram showing an example in which the work determination method according to the present invention is applied to work analysis.

[Explanation of symbols]

10A, 10B ... microphone (sound pickup microphone), 14
... work sound signal input unit, 18 ... filter, 20 ... A / D converter, 22 ... arithmetic unit, 24 ... database unit, 26 ... output unit

Claims (3)

[Claims] 1. A work content recording device for recording the contents of work performed by a worker, wherein the work sound detecting means detects a work sound generated by the work of the worker, and the work sound is detected by the work sound detecting means. A work content recording device, comprising: a work content determination unit that determines a work content based on a work sound; and a recording unit that records the work content determined by the work content determination unit. 2. The work content discriminating means based on a frequency characteristic of the work sound detected by the work sound detecting means and a frequency characteristic of the work sound stored as data in advance for the work content to be determined. And determining a work content corresponding to the detected work sound.
Work content recording device. 3. The work sound frequency characteristic is characterized by a difference in sound pressure level in each frequency band when the work sound is separated into a plurality of frequency bands. 3. The work content recording apparatus according to claim 2, wherein the work sound detected by the means is separated into the frequency bands, and a work content is determined by detecting a change in a sound pressure level in each frequency band.