JP2505507B2 - Worker operating condition measuring device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a worker operating condition measuring device, and more particularly to a worker operating condition measuring device for measuring an operating condition of a worker by vibration detecting means.

[Prior Art] Conventionally, in order to measure the operation status of how much a worker has performed a predetermined work within a predetermined time, it is possible to directly or continuously observe the worker at predetermined time intervals. Was going on. Further, there is known a method such as a memo / motion study in which a movie camera is used to shoot at a normal camera speed or lower or intermittently (at a rate of one frame per few seconds).

[Problems to be solved by the invention]

However, in the above measuring method, the observer directly measures the operating condition of the worker, or the operating condition of the worker is measured by looking at the image captured by the camera. However, there was a problem that the operating conditions of many workers could not be measured at one time.

The present invention has been made to solve the above-mentioned problems, and provides a worker operating status measuring device capable of measuring the operating status of a large number of workers at one time without the measurement result being influenced by the subjectivity of the observer. The purpose is to do.

[Means for solving problems]

In order to achieve the above object, the present invention provides a vibrating means that vibrates by an acceleration generated by a worker working, a vibration detecting means that converts the vibration of the vibrating means into an electric signal, and a vibration detecting means for measuring. It is possible to carry a vibration selecting means for detecting a vibration having a frequency and an amplitude in a predetermined range among the generated vibrations, and a recording means for recording the detection signal output from the vibration selecting means together with the detection time. It is characterized by being stored in a storage means.

[Action]

According to the present invention, when the worker carries the work while carrying the storage means that stores the vibration detection means and the recording means, the vibration detection means vibrates and generates a detection signal.
The detection signal is recorded in the recording means together with the detection time. Therefore, by analyzing the data of the recording means,
The operating status of workers can be measured.

〔The invention's effect〕

As described above, according to the present invention, the vibration detection unit converts the vibration of the worker into a detection signal, and the detection signal is recorded in the recording unit together with the detection time. It has an excellent effect that it is not affected. In addition, it is possible to measure the operating conditions of a large number of workers at once by carrying the operating condition measuring device for a large number of workers.

〔Example〕

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a worker operating condition measuring device according to the present invention.
Shown are 10 tilt views.

The worker operating condition measuring device 10 is housed in a portable case 12 of a size that allows a worker to put it in a pocket or the like. On the operation surface 14 of the case 12, a power switch 16, work selection switches 18A, 18B, 18C for selecting a work to be measured (for example, work R, work W, work S), one measurement time (for example, 10 minutes, 20 minutes). Measurement time adjustment dial 20 to determine the minute, etc., the time interval from one measurement to the next (eg 1
A measurement interval adjustment dial 22 for determining the time interval, every 2 hours, etc., and a socket 24 for connecting to a personal computer 60 for analyzing data are installed.

FIG. 2 shows a worker operating condition measuring device according to the present invention.
10 block diagrams are shown.

Inside the case 12, a vibration sensor 30 for converting the vibration of the worker into a detection signal is installed. The vibration sensor 30 has a configuration similar to that of a known pedometer, and the output thereof is not a cumulative number of steps but is output as a voltage signal in real time. In addition, the internal accumulation in the known pedometer only counts the pulses of the output voltage signal, and there is no new technique for this. On the output side of the vibration sensor 30, that is, on the voltage signal output side, work selection switches 18A, 18B for selecting the work to be measured,
18C is connected. Work selection switch 18A, 18B, 18C
The signal receiving units 32A, 32, and 32C that output only the detection signals corresponding to the selected work are connected to the.
Here, in the pedometer, the output pulse may be counted regardless of walking / running, but basically the output voltage itself has different amplitudes and frequencies during walking / running or climbing / falling stairs. In other words, the amplitude and frequency of the output signal differ depending on the worker's work.

The signal receiving unit 32A, an amplifier 34A for amplifying a detection signal from the vibration sensor 30, a bandpass filter 36A for passing only a signal in a predetermined frequency band, and for amplifying an output signal of the bandpass filter 36A. Amplifier 38A
And a trigger circuit 40A for generating a trigger signal by a signal having a predetermined voltage or higher. Further, the signal receiving units 32B and 32C are similarly configured.

The signal receiving unit 32 is provided on the output side of the signal receiving units 32A, 32B, and 32C.
A counter memory 42 for recording output signals output from A, 32B, and 32C is connected. Further, the counter memory 42 is connected to a timer 44 for inputting the detection time of the output signal. The output side of the counter memory 42 is connected to a large-capacity data storage IC memory 46 for recording the data recorded in the counter memory 42 at predetermined time intervals.

The counter memory 42 includes a measurement time adjustment dial 20 for determining one measurement time and a measurement interval adjustment dial for determining a data measurement interval from one measurement to the next measurement.
It is connected to a data sampling interval adjusting unit 54 having 22.

The signal receiving unit 32A, 32B, 32C, the counter memory 42,
The timer 44, the data storage IC memory 46, and the data sampling interval adjusting unit 54 are each connected to the CPU 48 and controlled by the CPU 48.

The previous term signal receiving units 32A, 32B, 32C are signal receiving units 32A, 32
It is connected to a sensor sensitivity adjusting section 52 for adjusting the trigger voltage V ₁ of the trigger circuit 40 in B and 32C.

 Next, the operation of the present invention will be described.

Turn on the power switch 16 on the operation surface 14 of the case 12.
Next, the work to be measured (for example, work R) is selected by turning on the work selection switch 18A. Further, the measurement time adjustment dial 20 determines one measurement time (for example, 10 minutes), and the measurement interval adjustment dial 22 determines the time interval from one measurement to the next measurement (for example, every one hour).

The worker carries the worker operating status measuring device 10 which has completed the setting. By the worker working,
The worker operating condition measuring apparatus 10 carried by the worker vibrates. The vibration is converted by the vibration sensor 30 into a detection signal shown in FIG. The frequency and amplitude of the output signal from the vibration sensor 30 differ depending on the work of the worker. For example, as shown in FIG. 3 (A), the signal S is for the work S, the signal W is for the work W, and the signal R is for the work R.
In other work, the signal K and the noise become the signal N.

The output signals S, W, R, K, N of the vibration sensor 30 are input to the signal receiving unit 32A which outputs only the detection signal corresponding to the work R by the work selection switch 18A. The output signals S, W, R, K and N input to the signal receiving unit 32A are amplified by the amplifier 34A and output to the band pass filter 36A. The band pass filter 36A allows signals of the frequencies of the work R and the work K to pass, but does not allow signals of the other frequencies to pass, so that the output signals S, W, N other than the work R and the work K are removed, and the output signals R and K are amplifiers 38
Output to A. Output signals R and K input to the amplifier 38A
Is amplified by the amplifier 38A and output to the trigger circuit 40A. As shown in FIG. 3B, the output signals R and K input to the trigger circuit 40A generate a trigger signal when the voltage is V ₁ or higher. That is, as shown in FIG. 3 (C), the output by the signal R _1, the trigger signal is generated to the time T _1, at the same time the output signal R ₁ from the signal receiving unit 32A is recorded into the counter memory 42 Timer 44 From time T ₁ is recorded in the counter memory 42.

Similarly, the output signals R ₂ , R ₃ and R ₄ generate trigger signals at times T ₂ , T ₃ and T ₄ , and the signal receiving unit 32A outputs the output signals R ₂ , R ₃ and R ₄
Is recorded in the counter memory 42, and at the same time, times T ₁ , T ₃ , T ₄ are recorded in the counter memory 42 from the timer 44.

Further, the signal receiving unit 32B (for example, a signal receiving unit that outputs only a detection signal of the work W) or the signal receiving unit 32C (for example, the work S by the work selection switches 18B and 18C).
Also when the signal receiving unit which outputs only the detection signal is selected, the output signal W or the output signal S is recorded in the counter memory 42 in the same manner as described above, and at the same time, the time when the output signal is detected from the timer 44 is detected. It is recorded in the counter memory 42.

Output signals R ₁ , R ₂ , R ₃ , recorded in the counter memory 42, ...
And detection times T ₁ , T ₂ , T ₃ , ...
It is stored in the IC memory 46.

The data recorded in the data storage IC memory 46 is analyzed by connecting the data storage IC memory 46 to the personal computer 60 via the socket 24 after the operation status measurement is completed, and the output signals R ₁ , R ₂ and R _{3 are} analyzed. ,…, And the detection times T ₁ , T ₂ , T ₃ ,
... and how many times the work R has been performed in a predetermined time is calculated.

If the sensor sensitivity is inappropriate, the sensor sensitivity adjustment unit
By 52, the signal receivers 32A, 32B, 32C trigger circuits 40A, 40
The sensitivity of the vibration sensor 30 is adjusted by adjusting the trigger voltages of B and 40C.

When planning the improvement of productivity such as introduction of a transportation system in office, it is necessary to analyze the work of the office worker (worker) and consider which part of it should be improved. In such a case, the present invention provides the target worker with the worker operating status measuring device.
After collecting and carrying 10 for a certain period of time, by analyzing the recorded data, it is possible to easily know the operating status of the entire worker or individual workers, and as a result, work that excludes office productivity (for example, work It has an excellent effect that it is possible to know the ratio of the horizontal movement when a person moves on the floor, or the vertical movement when moving up and down stairs) to the horizontal and vertical movements of all work.

In addition, by allowing the worker to carry the worker operating status measuring device 10 at the work place, it becomes possible to perform continuous time analysis for a long time. As a result, it is possible to study a layout that eliminates wasteful walking of the worker, eliminate wasteful work due to finding work that disturbs the worker's condition, and improve productivity. Further, in the case of the assembly work, there is an excellent effect that the work can be appropriately divided and distributed.

In the above-mentioned embodiment, the worker operating condition measuring apparatus 10 can be easily set on the waist or the like, and therefore, there is an excellent effect that the worker does not feel that he is being observed. Further, by increasing the capacity of the data storage IC memory 46 or increasing the data measurement interval by the measurement interval adjustment dial 20, continuous recording for a long time becomes possible. Further, by transferring the data in the data storage IC memory 46 to another recording device, there is an excellent effect that it can be repeatedly used.

In the embodiment, the signal receiving units 32A, 32B, 32C having frequencies and trigger voltages specific to various works are connected in parallel, and the signals output from the signal receiving units 32A, 32B, 32C are stored in the counter memory 42. However, using a bandpass filter with a wide frequency band, the output signals of a plurality of operations are detected by one signal receiving unit, and the data indicating the voltage level of the output signal and the detection time are stored in the counter memory 42. Record,
At the time of analysis, the frequency of each detection signal may be calculated from the detection time of the output signal, and how much each work has been performed in a predetermined time may be calculated based on the frequency and the voltage level. Further, by replacing or adjusting the bandpass filter 40 of the signal receiving unit 32 or the vibration sensor 30, vibrations peculiar to various works may be detected and recorded in the counter memory 42.

[Brief description of drawings]

FIG. 1 is a perspective view of the worker operating condition measuring device, FIG. 2 is a block diagram of the worker operating condition measuring device, and FIG. 3 is a diagram showing respective output signals. 10 ... Worker operating condition measuring device, 30 ... Vibration sensor, 42 ... Counter memory, 46 ... Data storage IC memory.

Claims (1)

(57) [Claims] 1. A vibrating means vibrating due to an acceleration generated by a worker working, a vibration detecting means for converting the vibration of the vibrating means into an electric signal, and a predetermined vibration among the vibrations measured by the vibration detecting means. A vibration selecting means for detecting a vibration having a frequency and an amplitude within the range, and a recording means for recording the detection signal output from the vibration selecting means together with the detection time in a portable storage means. Worker operating condition measuring device characterized by.