JP6454294B2 - State evaluation apparatus and state evaluation method - Google Patents

Description

  The present invention relates to a safety maintenance technique such as work at a high place.

  Conventionally, in order to ensure safety in high-altitude work, a fixing tool is hung on a stable fulcrum, and a safety belt or harness attached to the body is connected to the body via a lifeline (for example, rope, sling, and tape). Therefore, it is necessary to prevent a fall accident (see, for example, Non-Patent Document 1 and Non-Patent Document 2). Many tools, procedures, safety standards, caution inspection items, training, and daily efforts have been made to ensure safety, but accidents such as falls have occurred and solutions are required. Causes of accidents include inadequate safety procedures, omissions, and poor physical condition, and many can be prevented.

  In order to ensure safety, it is indispensable to securely fix the fixture to the fulcrum and to manage the physical condition of the worker, and it is desirable to monitor not only safety procedures and self-inspection but also sensors. However, the introduction of a safety management system using sensors during high-altitude work has not progressed due to restrictions on the operating environment and demands for simplified safety devices. Requests for simplifying safety devices include that it is likely to cause confusion at the site due to the mischievous complexity of safety devices, that the burden on workers increases due to the addition of excessive equipment, and that it becomes an obstacle to work. This is due to multiple causes. In particular, secure installation and fixing of a fixture (such as a carabiner) to a fulcrum (anchor) for ensuring safety is essential for safety. Usually, two or more fixing tools are used, and when moving the body, one is always fixed to a fulcrum and the other is removed from the fulcrum and fixed to the next fulcrum.

“Safety belt standards”, [online], March 14, 2002, 2002 Ministry of Health, Labor and Welfare Notification No. 38, [March 18, 2016 search], Internet <URL: http: // anzeninfo. mhlw.go.jp/anzen/hor/hombun/hor1-11/hor1-11-22-1-0.htm> “The correct usage of safety belts”, [online], Japan Safety Belt Study Group, [Search on March 18, 2016], Internet <URL: http://www.safety-kinki.meti.go.jp/ kouzan / downloadfiles / H27tsuiraku_kenshuu / anzentai.pdf>

  However, the above rules may not be observed due to carelessness or intentional omission. In such a case, it may lead to an accident. In addition, workers may become careless due to fatigue due to long working hours or reduced concentration due to poor physical condition. In recent years, the risk has increased due to the aging and increasing prevalence associated with aging. It's getting on. Measures such as illness in advance, evacuation to a safe area, and first-aid measures are required, but it is difficult to supervise the physical condition of all workers during high-altitude work. Therefore, there is a demand for an apparatus that can quantitatively evaluate the worker's state.

  In view of the above circumstances, an object of the present invention is to provide a technique capable of quantitatively evaluating an operator's state.

  One aspect of the present invention is an acquisition unit that acquires information about the movement of the fulcrum fixing tool from a first motion sensor attached to a safety belt near the fulcrum fixing tool, and acquired information about the movement of the fulcrum fixing tool And an evaluation unit that evaluates the state of the worker based on the condition evaluation device.

  One aspect of the present invention is the above-described state evaluation device, wherein the acquisition unit obtains information related to the worker's movement and biological information of the worker from a second motion sensor that measures the movement of the worker. The biological information is further acquired from the biological sensor to be acquired, and the evaluation unit is based on the acquired information on the movement of the fulcrum fixing tool, the information on the movement of the operator, and the biological information. Evaluate worker status.

  One aspect of the present invention is the above-described state evaluation device, wherein the evaluation unit includes a determination result obtained from information related to the movement of the fulcrum fixing tool, and a determination result obtained from information related to the movement of the worker. The risk of fixing the fulcrum of the fulcrum fixing tool and the risk derived from the operator's body are determined by obtaining the likelihood of the determination result using the determination result obtained from the biological information.

  One aspect of the present invention is the above-described state evaluation device, in which the evaluation unit determines a fixing state of the fulcrum fixing tool from information related to the movement of the fulcrum fixing tool.

  One aspect of the present invention is the above-described state evaluation device, in which the evaluation unit determines a state of shaking of the worker's body from information regarding the movement of the worker.

  One aspect of the present invention is the above-described state evaluation device, wherein the evaluation unit determines an abnormality of the worker's body from the biological information.

  One aspect of the present invention is the state evaluation device described above, further including a history database that retains information acquired in the past by the acquisition unit as a history, and the evaluation unit obtains a prior probability from the history database. The condition of the worker is comprehensively evaluated based on the danger of fixing the fulcrum of the fulcrum fixing tool, the danger derived from the worker's body, and the prior probability.

  In one aspect of the present invention, information on the movement of the fulcrum fixing tool from the first motion sensor attached to the fulcrum fixing tool, and information on the movement of the worker from the second motion sensor that measures the movement of the worker. An acquisition step of acquiring the biological information from a biological sensor that acquires the biological information of the worker, the acquired information regarding the movement of the fulcrum fixture, the information regarding the movement of the worker, and the biological And an evaluation step for evaluating the worker's state based on the information.

  One aspect of the present invention is the state evaluation method described above, wherein in the obtaining step, information related to the movement of the scaffold and environmental information are obtained from a third motion sensor that measures the movement of the worker's scaffold. The environmental information is further acquired from an environmental sensor, and in the evaluation step, the acquired information on the movement of the fulcrum fixing tool, the information on the movement of the operator, the biological information, and the movement of the scaffold And an evaluation step for evaluating the state of the worker based on the environmental information from the environmental sensor that acquires the information and the environmental information.

  According to the present invention, it is possible to quantitatively evaluate an operator's state.

It is a figure which shows the specific example of the safety holding apparatus in this invention. It is a figure for demonstrating the mooring fixing position of the fulcrum fixing tool. It is a figure for demonstrating the characteristic of the shake and movement of a motion sensor in each state of FIG. It is a figure which shows the result measured by the motion sensor 3 in the state of FIG. 3 (A)-FIG. 3 (D). It is a figure which shows the result of a measurement when the fulcrum fixing tool 1 is not fixed to the fulcrum 4. 2 is a schematic block diagram illustrating a functional configuration of a state evaluation device 10. FIG. It is a figure for demonstrating the specific process of the evaluation part. It is a figure for demonstrating the specific process of the evaluation part 102 in case the fulcrum fixing tool 1 is two.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[Outline]
In the safety holding system according to the present invention, a motion sensor attached to the safety holding device, a biosensor that directly or indirectly contacts the worker's body, and a motion sensor that directly or indirectly contacts the worker's body Based on the information acquired from the above, the worker's state is quantitatively evaluated. The motion sensor is, for example, an acceleration sensor. The safety holding device includes a fulcrum fixing tool, a lifeline, and a safety belt (harness). The fulcrum fixing tool is, for example, a carabiner, an anchor rope, a hook or the like. The lifeline is, for example, a rope, a sling, a tape or the like. The safety maintenance system notifies the worker's current state by feeding back the evaluation result to the worker or a person other than the worker.
With this configuration, the worker's state can be quantitatively evaluated. The worker and a person other than the worker can grasp the current state of the worker by looking at the evaluation result. The person other than the worker is, for example, a work manager. As a result, the worker and a person other than the worker can take actions to prevent an accident.

[Details]
First, the apparatus and apparatus used in this embodiment will be described.
The motion sensor is attached directly or indirectly to the fulcrum fixture. The motion sensor is attached to a position where the movement of the worker's body (for example, the upper body) can be measured. The motion sensor acquires information (for example, angle, acceleration, and movement) related to the movement of the fulcrum fixture. The motion sensor outputs acquired data including the acquired information to the state evaluation device. The motion sensor acquires information related to the movement of the worker. The motion sensor outputs the acquired data to the state evaluation device. The motion sensor is preferably a wireless system with a built-in battery.
The biometric sensor acquires the biometric information of the worker. The biological information is, for example, values such as heart rate, heart action potential, body temperature, voice output level, blood pressure, and the like. The biometric sensor outputs the acquired data to the state evaluation device.

The state evaluation device quantitatively evaluates the worker's state based on the acquired data acquired by the motion sensor and the biological sensor. The state evaluation apparatus is configured using an information processing apparatus such as a small and light dedicated terminal, a smartphone, a smart watch, or a tablet. The state evaluation apparatus sequentially notifies the evaluation result to either or both of the worker and a person other than the worker. For example, the state evaluation apparatus notifies the evaluation result by sound, vibration, light, video, and the like. Thereby, the worker can grasp his / her state and thoroughly perform the work according to the safety procedure. Further, a person other than the worker can thoroughly alert the worker. In addition, the state evaluation device outputs the evaluation result to another device (for example, a host computer). Thereby, the state evaluation apparatus can notify an evaluation result to persons other than an operator.
Specific processing will be described below.

  FIG. 1 is a diagram showing a specific example of a safety holding device according to the present invention. In FIG. 1, four patterns of safety holding devices are shown as specific examples of the safety holding device. FIG. 1A shows an example of a safety holding device in which a motion sensor 3 is attached in the vicinity of the fulcrum fixture 1 of the lifeline 2 connected to the fulcrum fixture 1. By being configured as shown in FIG. 1A, the motion sensor 3 can acquire information on the movement (vibration, movement) of the fulcrum fixture 1 and the installation state of the fulcrum fixture 1. The information regarding the installation state of the fulcrum fixture 1 represents, for example, information on the angle of the fulcrum fixture 1.

FIG. 1B shows an example of a safety holding device in which the motion sensor 3 is directly attached to the fulcrum fixture 1. 1B, the motion sensor 3 directly acquires information on the movement (vibration) of the fulcrum fixture 1 and the installation state of the fulcrum fixture 1 than in FIG. 1A. be able to.
FIG. 1C shows an example of a safety holding device in which the direct motion sensor 3 is attached in a state where the fulcrum fixing tool 1 is fixed to the fulcrum 4.

In FIG. 1D, in a safety holding device including a chest band 5 and a safety belt 6 in addition to the fulcrum fixing device 1, a biological signal transmitter 7 with a motion sensor and a biological sensor 8 are attached to the chest band 5. 1 shows an example of a safety holding device in which a motion sensor 3 is attached to a fulcrum fixture 1. The worker suspends the fulcrum fixing tool 1 from a fulcrum fixing tool holder 9 provided on the safety belt 6 when safety is not required or when the work place is moved. The biological signal transmitter with motion sensor 7 acquires the measurement result by measuring the movement of the worker. The biological signal transmitter with motion sensor 7 outputs the measurement result to the state evaluation device. In addition, the biological signal transmitter with motion sensor 7 acquires the measurement result of the biological sensor 8. The biological signal transmitter with motion sensor 7 outputs the measurement result to the state evaluation device.
Note that the safety holding device need not be limited to the above four.

FIG. 2 is a diagram for explaining a mooring fixing position of the fulcrum fixing tool 1. As mooring fixing positions of the fulcrum fixing tool 1, the following four patterns are assumed.
FIG. 2A shows a state in which the fulcrum fixing tool 1 is fixed to the fulcrum 4 located at the same height as the position of the operator's waist or higher than the waist position. 2B shows a state in which the fulcrum fixture 1 is suspended and fixed to the fulcrum fixture holder 9 and a state in which the fulcrum fixture 1 is suspended and fixed. As a state in which the fulcrum fixture 1 is suspended and fixed to the fulcrum fixture holder 9, the fulcrum fixture 1 is attached to the safety belt 6 (harness) so that it does not get in the way during movement or ground work. It is in a state where it is hung. FIG. 2C shows a state where the fulcrum fixing tool 1 is fixed to the fulcrum 4 at a position lower than the position of the operator's waist. The motion sensor 3 in contact with the fulcrum fixture 1 or attached in the vicinity of the fulcrum fixture 1 is stationary when the fulcrum fixture 1 is moored to the fulcrum 4 or the fulcrum of the fulcrum fixture 1. Perform a pendulum motion with the apex at the top. By this pendulum movement, the motion sensor 3 outputs acquired data including an angle, acceleration, and movement having a certain feature amount. Thereby, it is possible to grasp whether the fulcrum fixing tool 1 is moored at the fulcrum based on the output acquired data.

  FIG. 3 is a diagram for explaining the characteristics of the shake and movement of the motion sensor in each state of FIG. Note that a, b, b1, b2, c, and d in FIG. 3 schematically represent the situation of the fulcrum fixture 1 and the angle at which the fulcrum fixture 1 moves. When the fulcrum fixing tool 1 is fixed to the fulcrum 4 as shown in FIG. 3A, the fulcrum fixing tool 1 performs the pendulum motion a around the fixed fulcrum. Therefore, the motion sensor 3 can acquire the angle, acceleration, and movement according to the motion. Then, the motion sensor 3 outputs the acquired acquisition data to the state evaluation device. Thereby, it is possible to grasp whether the fulcrum fixing tool 1 is moored at the fulcrum based on the output acquired data.

  When the fulcrum fixing device 1 is fixed to the fulcrum fixing device holder 9 of the safety belt 6 as shown in FIG. 3 (B), the fulcrum fixing device 1 is caused by the movement of the body in addition to the movement b1 similar to the movement b of the body. A pendulum motion c2 is performed with the fulcrum fixture holder 9 as a fulcrum by being shaken by a horizontal or vertical motion or body movement. Therefore, the motion sensor 3 and the biological signal transmitter with motion sensor 7 can acquire an angle, an acceleration, and a movement having a characteristic amount corresponding to the motion. Then, the motion sensor 3 and the biological signal transmitter with motion sensor 7 output the acquired acquired data to the state evaluation device. Thereby, based on the acquired data output from the motion sensor 3, it is possible to grasp whether the fulcrum fixing tool 1 is moored at the fulcrum. Further, based on the acquired data output from the biological signal transmitter 7 with the motion sensor, it is possible to grasp the presence or absence of the operator's wobbling.

  When the fulcrum fixing device 1 is not fixed to the fulcrum 4 and hangs down as shown in FIG. 3 (C), the fulcrum fixing device 1 is upside down with respect to FIG. 3 (A), and the lifeline 2 with the safety belt 6 as a fulcrum. A discontinuous pendulum motion d of the length As shown in FIG. 3 (C), the fulcrum fixing tool 1 hangs down accidentally from the body and cannot be applied to the fulcrum fixing tool holder 9 of the safety belt 6 (harness). A large pendulum motion d with the junction of the lifeline 2 to the safety belt 6 as a vertex is performed, and the motion sensor 3 is turned upside down. Therefore, the motion sensor 3 can acquire an angle, an acceleration, and a movement having a feature amount corresponding to the motion. Then, the motion sensor 3 outputs the acquired acquisition data to the state evaluation device. Thereby, it is possible to grasp that there is a risk that the fulcrum fixing tool 1 may hang down based on the output acquired data.

  When the fulcrum fixture 1 is fixed to the fulcrum 4 as shown in FIG. 3D, that is, when the fulcrum 4 is at a position lower than the waist position, the fulcrum fixture 1 is in a state where the lifeline 2 is stretched. As shown in FIG. 3A, the vertical direction is reversed or lateral, and a discontinuous pendulum motion b about the fulcrum 4 is performed. Although the fulcrum fixing tool 1 is fixed to the fulcrum 4 as shown in FIG. 3 (B), the safety of the lifeline 2 is safe in situations where the worker is working at a position higher than the fulcrum. A periodic motion in which the pendulum motion is suppressed by the fulcrum 4 is performed with the junction point with the belt 6 as the apex, and the motion sensor 3 is turned upside down or horizontally. Therefore, the motion sensor 3 can acquire an angle, an acceleration, and a movement having a feature amount corresponding to the motion. Then, the motion sensor 3 outputs the acquired acquisition data to the state evaluation device. Thereby, based on the output acquired data, it is possible to grasp that the body is at a higher position than the fulcrum 4 and is in a dangerous state. The situation with a relatively high degree of danger is a situation in which a strong impact is applied to the worker when falling, and there is a risk that the body may collide with a wall or a column by a pendulum motion.

  In the states shown in FIGS. 3A to 3D, the motion sensor 3 acquires angles, accelerations, and movements having different feature amounts. Therefore, the state evaluation apparatus can evaluate the state of the fulcrum fixture 1 based on the acquired data output from the motion sensor 3.

  FIG. 4 is a diagram showing the results measured by the motion sensor 3 in the states of FIGS. 3 (A) to 3 (D). In FIG. 4, the vertical axis represents acceleration and the horizontal axis represents time. FIG. 4 shows two measurement results at the top and bottom. The line graphs 11, 12 and 13 shown in the upper part of FIG. 4 fix the motion sensor 3 on the lifeline 2 connected to the fulcrum fixture 1, and measure the acceleration XYZ of the measured motion sensor 3 m / s ^ 2 (X channel ( It is the figure which showed the line graph 11), Y channel (line graph 12), and Z channel (line graph 13)).

  The measurement result in the range indicated by the fulcrum fixed normal position A in FIG. 4 represents the measurement result in a state where the fulcrum fixture 1 is fixed to the fulcrum 4 as shown in FIG. The measurement result in the range indicated by the holder fixing B in FIG. 4 represents the measurement result in a state where the fulcrum fixing tool 1 is fixed to the fulcrum fixing tool holder 9 of the safety belt 6 as shown in FIG. The measurement result in the range indicated by the fulcrum fixing tool droop C in FIG. 4 represents the measurement result in a state where the fulcrum fixing tool 1 hangs down without being fixed to the fulcrum as shown in FIG. The measurement results in the range indicated by the lower body fulcrum D in FIG. 4 show that the fulcrum 4 is located at a position lower than the waist position when the fulcrum fixture 1 is fixed to the fulcrum 4 as shown in FIG. Represents the measurement result in a certain state. As shown in FIG. 4, it can be seen that different measurement results are obtained in the respective states of FIGS. 3 (A) to 3 (D).

  Further, line graphs 14, 15 and 16 shown at the bottom of FIG. 4 are XYZ angles (relative values) of the body (trunk) measured by the biological signal transmitter with motion sensor 7 simultaneously with the top of FIG. A characteristic signal is recorded for each state. In the fulcrum fixed normal position A, the relative angle with the fulcrum 4 as a vertex is shown. In the holder fixing B, an acceleration change approximate to that of the biological signal transmitter with motion sensor 7 is shown, and the correlation is high. In the fulcrum fixture droop C, it is inverted up and down, and the impact waveform when the fulcrum fixture 1 collides with the body or the column is scattered. In the lower body fulcrum D, the acceleration changes relatively depending on the fulcrum, in addition to the vertical movement and lateral orientation.

  FIG. 5 is a diagram illustrating a measurement result when the fulcrum fixing tool 1 is not fixed to the fulcrum 4. In FIG. 5, the vertical axis represents acceleration and the horizontal axis represents time. In FIG. 5, the measurement result of the motion sensor 3 at the time of the wobbling of the body is shown. At the fulcrum fixed normal position A, the relationship between the body wobble (arrow), the motion sensor 3 (upper graph), and the biological signal transmitter 7 with motion sensor (lower graph) is shown. When the body wobbled, a large change in acceleration was recorded faster than the motion sensor 3 by the biological signal transmitter 7 with motion sensor, and a feature different from the data in the fulcrum fixed state shown in FIG. 5 was shown.

FIG. 6 is a schematic block diagram illustrating a functional configuration of the state evaluation device 10.
The state evaluation device 10 includes a CPU (Central Processing Unit), a memory, an auxiliary storage device, and the like connected by a bus, and executes an evaluation program. By executing the evaluation program, the state evaluation device 10 functions as a device including the acquisition unit 101, the evaluation unit 102, the output control unit 104, and the output unit 105. All or some of the functions of the state evaluation apparatus 10 may be realized using hardware such as an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), or an FPGA (Field Programmable Gate Array). . The evaluation program may be recorded on a computer-readable recording medium. The computer-readable recording medium is, for example, a portable medium such as a flexible disk, a magneto-optical disk, a ROM, a CD-ROM, or a storage device such as a hard disk built in the computer system. The evaluation program may be transmitted / received via a telecommunication line.

The acquisition unit 101 acquires acquisition data acquired by the motion sensor 3, the biological signal transmitter with motion sensor 7, and the biological sensor 8. The acquisition unit 101 outputs the acquired acquisition data to the evaluation unit 102 and the history database 103.
The evaluation unit 102 evaluates the current state of the worker based on the acquisition data output from the acquisition unit 101. Specific processing of the evaluation unit 102 will be described later. The evaluation unit 102 outputs the evaluation result to the output control unit 104.

  The history database 103 is configured using a storage device such as a magnetic hard disk device or a semiconductor storage device. The history database 103 stores the acquisition data acquired by the acquisition unit 101 (acquisition data acquired by the motion sensor 3, the biological signal transmitter with motion sensor 7 and the biological sensor 8) in association with the acquired sensor.

The output control unit 104 controls the output unit 105 based on the evaluation result of the evaluation unit 102. For example, when the evaluation result indicates a dangerous state as the worker's state, the output control unit 104 controls the output unit 105 to output information for calling attention. Information to call attention is determined by the content indicating a dangerous state based on the evaluation result. For example, when the fulcrum fixing related to the fulcrum fixing tool 1 is not performed, the output control unit 104 causes the output unit 105 to output information indicating that the fulcrum fixing is not performed. Examples of output modes include sound, vibration, light, and video.
The output unit 105 outputs information for calling attention according to the control of the output control unit 104. The output unit 105 may output the evaluation result to another device (for example, a host computer).

FIG. 7 is a diagram for explaining specific processing of the evaluation unit 102. In addition, in FIG. 7, the case where the fulcrum fixing tool 1 is one is demonstrated to an example.
The evaluation unit 102 determines whether or not the fulcrum fixture 1 is fixed based on the acquired data acquired from the motion sensor 3 attached to the fulcrum fixture 1. The evaluation unit 102 determines whether the holder is fixed based on the correlation between the acquired data acquired from the motion sensor 3 attached to the fulcrum fixture 1 and the acquired data acquired by the biological signal transmitter 7 with motion sensor, The body wobble determination is performed from the position, and the presence / absence of body abnormality is determined from the biological information. Further, the evaluation unit 102 calculates the prior probability using the acquired data stored in the history database 103. Further, the evaluation unit 102 determines the risk of fixing the fulcrum and the risk derived from the body from the likelihood of the determination result. The danger of fixing the fulcrum represents the probability that the fulcrum fixing tool 1 is not secure. The danger of fixing the fulcrum is obtained from the determination result based on the acquired data acquired from the motion sensor 3 attached to the fulcrum fixture 1. The risk derived from the body represents a probability that the body is not safe with respect to abnormalities and wandering. The risk derived from the body is obtained from the determination result based on the acquired data acquired by the biological signal transmitter with motion sensor 7 and the biological information. The evaluation unit 102 comprehensively evaluates the risk from the risk of fixing the fulcrum, the risk derived from the body, and the prior probability. Then, the evaluation unit 102 notifies the worker or a person other than the worker of the evaluation result according to the evaluation result, and prompts a safety measure.

  The state evaluation device 10 configured as described above has acquired data obtained from the motion sensor 3 attached to the fulcrum fixture 1 and obtained from the biological signal transmitter 7 with a motion sensor that measures the movement of the body. Using the data and the acquired data obtained by the biological sensor 8, it is determined whether or not there is a fixed state of the fulcrum fixing device 1, a state of shaking of the body such as wobbling of the worker's body, and a physical abnormality. . Therefore, it is possible to quantitatively evaluate the worker's state.

Diseases, poor physical condition, etc. can cause not only direct causes of accidents due to dizziness, dizziness, disturbance of consciousness, heart attack, but also indirect accidents such as reduced attention and omission of safety procedures. Therefore, as in the present invention, by attaching a motion sensor that measures the movement of the body, it is possible to capture body fluctuations different from normal work.
In addition, by using the motion sensor 3 attached directly or indirectly to the fulcrum fixture 1 and the data of the motion sensor that measures the movement of the body, whether the body is abnormally shaken or the fulcrum is shaken. It can be grasped whether it is upset by the factor.

  By providing the biosensor 8, it becomes possible to detect the state of the operator who has caused the abnormality. For example, by attaching a bioelectrode to the chest of the operator, from electrocardiogram to heart disease, seizures, heart rate and heart rate fluctuation, arrhythmia, autonomic balance, tension, heat stroke and dehydration We can guess the situation. Moreover, the fatigue and recovery state of skeletal muscle can be known by the bio-electrode and the stretch sensor mounted on the skeletal muscle, and the timing and necessity of the break can be known. Furthermore, an outline of the state of consciousness, concentration, etc. can be known from the electroencephalogram, myoelectricity, and eyeball potential by means of the bioelectrode mounted on the head. Furthermore, by mounting a blood flow sensor on the skin such as the wrist or ear, it is possible to estimate hemodynamics, heart rate, rough autonomic balance, tension, and possibility of heat stroke.

  In addition, by attaching a temperature / humidity sensor to the body, the risk of heat stroke and dehydration can be evaluated from the body temperature or the temperature in the clothes. It is possible to evaluate the overall risk by combining the data of the biosensor alone or a plurality of combinations with the data of the fixing state of the fulcrum fixture 1.

  Further, the current danger level and future risk level of the worker can be calculated from the signal of the motion sensor 3, the biological sensor 8, and the work history. For example, by accumulating work history, safety fixture status, number of near-miss incidents, accident events, and time series data of motion sensors and biological information, the relationship between the occurrence of safety procedure errors and fatigue, near-miss, accident occurrence The degree of risk can be calculated from the relationship of poor physical condition. A system that can take safety measures at an early stage by feeding back the determination result to an operator or supervisor is illustrated.

<Modification>
The state evaluation device 10 determines the fixing state of the fulcrum fixing device 1 based on the acquired data acquired from the motion sensor 3 attached to the fulcrum fixing device 1, and determines the risk of fixing the fulcrum based on the determination result. It may be configured to. When configured in this way, the state evaluation device 10 obtains the prior probability from the risk of fixing the fulcrum and the acquired data stored in the history database 103, and based on the risk of fixing the fulcrum and the prior probability. Overall condition of the worker is evaluated.

The state evaluation device 10 may be configured to output the evaluation result to another device. When configured in this way, the state evaluation device 10 transmits data and determination results to a host device such as a host computer sequentially or intermittently. With this configuration, the work manager can supervise the safety of the worker and give appropriate instructions.
The installation location of the motion sensor is not limited to the fulcrum fixture 1 and the body. For example, the movement sensor may be installed at a position where the movement of the worker's scaffold such as a work gondola, a suspension bridge, and an electric wire can be detected. In this case, the state evaluation device 10 collects the data acquired from the motion sensor 3, the data acquired from the biological signal transmitter 7 with the motion sensor, and the movement data of the scaffolding of the work to collect the body movement and safety status. It is possible to individually evaluate the stability of the scaffold and the stability of the fulcrum.

  The analysis of the acquired data of the motion sensor is not particularly limited as long as it determines the above characteristics, and any of the following methods may be used as the calculation method. For example, as a first method, there is a method of determining from the sway of the synthesized fulcrum 4 using time series data of angle, acceleration, and movement. Further, as a second method, there is a method of performing determination using a threshold value after various (linear) computations of acquired data. Further, as a third method, there is a method of determining from feature amounts of various parameters by a learning device such as linear or nonlinear machine learning using teacher data.

  In a usage environment where the stability of the fulcrum 4 varies depending on the situation, such as a utility pole, suspension bridge, high-voltage line cable, or a work gondola that is suspended, the fulcrum 4 is unstable and shakes. The most desirable method is to provide data and determine from the feature quantities of various parameters by a learning device such as linear or nonlinear machine learning.

  The motion sensor 3 need not be limited to an acceleration sensor. For example, the motion sensor 3 may be any sensor as long as it senses any or all of angle, inclination, movement, and vibration. The motion sensor 3 may be an acceleration sensor, a gyroscope, a direction sensor, an angle sensor, a vibrator, an angle switch, or the like, which may be used alone or in combination. The motion sensor 3 may output the acquired data by wire.

  The method for calculating the degree of risk is not particularly limited, and various statistical methods can be used. In particular, it is possible to exemplify a method for obtaining a posteriori probability from a priori probability and the latest measured value in Bayesian statistics, a statistical determination by data assimilation from a plurality of elements, or a determination by machine learning using a linear or nonlinear separator. . The evaluation method using a state space model based on Bayesian statistics is particularly suitable because it deals with time series information.

The sensing method of the safety ensuring state by the motion sensor 3 attached to the fulcrum fixture 1 includes a pressure sensor, an optical sensor, a magnetic sensor, a lock position sensor (carabiner, key, hook), etc. in the fulcrum fixture 1. Compared with the sensing method installed in 1), there is an advantage in the following points 1 to 5.
1. The fulcrum and fulcrum fixture that have various safety standards depending on the work environment, type, company, country, and region need not be processed to incorporate various dedicated sensors, and the motion sensor 3 is added to the existing fulcrum fixture 1. It can be implemented simply by installing a small built-in wireless transmitter.
2. A method in which a conventional contact sensor or optical sensor is built in the fulcrum fixture 1 (contact state, presence or absence of traction force can be measured. The movement sensor 3 attached to the fulcrum fixture 1 can collect more information on how to secure safety as to how it is connected to the fulcrum 3 as described above. .
3. Since the sensor itself is not mechanically stressed, it is advantageous in terms of service life and maintenance.
4). Sensors (for example, motion sensor 3, biological signal transmitter with motion sensor 7 and biological sensor 8) can be removed and used continuously when the safety holding device (fulcrum fixing device 1, safety belt 6, etc.) is updated or replaced. .
5. A wireless sensor is not electrically connected to the ground or signal line, and there is no danger of electric leakage, electric shock, or short circuit.

  The evaluation unit 102 may be configured to evaluate the state of the worker based on information from various sensors illustrated in FIG. FIG. 8 is a diagram for explaining specific processing of the evaluation unit 102 when there are two fulcrum fixtures 1. FIG. 8 shows a motion sensor 3 attached to each of the two fulcrum fixtures 1, a biological signal transmitter 7 with a motion sensor, a scaffold motion sensor, a biological sensor, and an environmental sensor. The scaffold movement sensor is provided on a worker's scaffold (for example, a gondola) and acquires information on the movement of the scaffold. The environmental sensor acquires environmental information. The environmental information includes temperature, humidity, weather information, and the like. When configured in this way, the evaluation unit 102 determines the fixing state of each fulcrum fixture 1 (for example, fixed to a fulcrum, fixed to a holder, not fixed) from the acquired data acquired from the motion sensor 3. To do.

  The evaluation unit 102 determines the fulcrum position from the acquired data acquired from the biological signal transmitter with motion sensor 7 and the acquired data acquired from the motion sensor 3. Further, the evaluation unit 102 determines whether or not the scaffold is shaken from the acquired data acquired from the scaffold motion sensor. In addition, the evaluation unit 102 determines the presence or absence of body wobbling from the acquired data acquired from the biological signal transmitter with motion sensor 7. Further, the evaluation unit 102 determines the presence / absence of body abnormality, the presence / absence of tension, and the presence / absence of high heat from the acquired data acquired from the biosensor 8. Further, the evaluation unit 102 determines whether the environment is a high temperature environment or a low temperature environment from the acquired data acquired from the environment sensor.

  Then, the evaluation unit 102 determines the fulcrum fixing risk and the body-derived risk using these determination results. The method for determining the fulcrum fixing risk and the body-derived risk is as described above. Thereafter, the evaluation unit 102 evaluates the operator's total risk from the fulcrum fixing risk, the body-derived risk, and the prior probability. With this configuration, it is possible to quantitatively evaluate the worker's state with higher accuracy than in FIG.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes designs and the like that do not depart from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Supporting point fixture, 2 ... Lifeline, 3 ... Motion sensor, 4 ... Supporting point, 5 ... Chest band, 6 ... Safety belt, 7 ... Biological signal transmitter with a motion sensor, 8 ... Biosensor, 9 ... Supporting point fixture holder, DESCRIPTION OF SYMBOLS 10 ... State evaluation apparatus, 101 ... Acquisition part, 102 ... Evaluation part, 103 ... History database, 104 ... Output control part, 105 ... Output part

Claims (6)

An acquisition unit for acquiring information on the movement of the fulcrum fixture from a first motion sensor attached to a safety belt near the fulcrum fixture;
An evaluation unit for evaluating the state of work of skill in the art based on the acquired information on motion of the fulcrum fixture,
Equipped with a,
The acquisition unit further acquires information on the worker's movement from a second motion sensor that measures the movement of the worker, and the biological information from a biological sensor that acquires the biological information of the worker,
The evaluation unit evaluates the state of the worker based on the acquired information on the movement of the fulcrum fixing tool, information on the movement of the worker, and the biological information,
The evaluation unit uses the determination result obtained from information related to the movement of the fulcrum fixing tool, the determination result obtained from information related to the movement of the worker, and the determination result obtained from the biological information. The state evaluation apparatus which determines the danger of the fulcrum fixation of the said fulcrum fixing tool, and the danger derived from the said operator's body by calculating | requiring the likelihood of this . The state evaluation apparatus according to claim 1, wherein the evaluation unit determines a fixing state of the fulcrum fixing tool from information on the movement of the fulcrum fixing tool. The state evaluation apparatus according to claim 1 , wherein the evaluation unit determines a state of shaking of the worker's body from information regarding the movement of the worker. The state evaluation apparatus according to claim 1 , wherein the evaluation unit determines an abnormality of the worker's body from the biological information. A history database that retains information acquired in the past by the acquisition unit as a history;
The evaluation unit obtains a prior probability from the history database, and comprehensively determines the work based on the risk of fixing the fulcrum of the fulcrum fixing tool, the risk derived from the worker's body, and the prior probability. evaluating the user status, the state evaluation device according to claim 1. Information on the movement of the fulcrum fixing tool from the first movement sensor attached to the fulcrum fixing tool, information on the movement of the worker from the second movement sensor for measuring the movement of the worker, and the biological body of the worker An acquisition step of acquiring the biological information from a biological sensor for acquiring information;
An evaluation step for evaluating the state of the worker based on the acquired information on the movement of the fulcrum fixing tool, the information on the movement of the worker, and the biological information;
I have a,
In the obtaining step, information on the movement of the scaffold is further obtained from a third motion sensor that measures the movement of the worker's scaffold, and the environmental information is obtained from an environmental sensor that obtains environmental information,
In the evaluation step, the environment information is acquired from the environment sensor that acquires the information related to the movement of the fulcrum fixing tool, the information related to the movement of the worker, the biological information, the information related to the movement of the scaffold, and the environment information. And a state evaluation method for evaluating the state of the worker based on the information .