WO2018150486A1

WO2018150486A1 - Alarm system

Info

Publication number: WO2018150486A1
Application number: PCT/JP2017/005509
Authority: WO
Inventors: 典宏長徳; 井上　淳
Original assignee: 三菱電機ビルテクノサービス株式会社; 三菱電機株式会社
Priority date: 2017-02-15
Filing date: 2017-02-15
Publication date: 2018-08-23
Also published as: CN110235185B; KR20190053971A; CN110235185A; JPWO2018150486A1; JP6525118B2; KR102084123B1

Abstract

An environmental index identification unit (12) identifies an index that corresponds to the environment as pertains to a work location identified by a work location identification unit (11). A work index identification unit (14) identifies an index that corresponds to content as pertains to work content identified by a work content identification unit (13). A calculation unit (15) calculates an evaluation value expressing the susceptibility of a worker is to heatstroke. A comparison unit (16) compares the evaluation value calculated by the calculation unit (15) and a reference value. An alarm unit (17) generates an alarm on the basis of the comparison results by the comparison unit (16).

Description

Alarm system

This invention relates to an alarm system.

As described in Patent Document 1, elevator workers perform elevator maintenance work or construction work at various sites. Workers should be careful not to get heat stroke, especially in summer.

Japanese Unexamined Patent Publication No. 2004-62621

Conventionally, workers have been working with devices that measure body temperature, heart rate, or heat stroke index, for example. However, there is a problem that wearing such devices interferes with the work. In addition, since many workers belong to the elevator maintenance company, there is a problem that the cost increases if the above devices are distributed to all workers.

This invention has been made to solve the above-described problems. An object of the present invention is to provide an alarm system that does not require an operator to wear extra equipment and can issue an alarm regarding heat stroke.

The alarm system according to the present invention includes a work place specifying means for specifying a place where an operator is working, and an environment index specifying means for specifying an index corresponding to the environment for the work place specified by the work place specifying means. A work content identification means for identifying the content of work performed by the worker, a work index identification means for identifying an index according to the content of the work content identified by the work content identification means, and an environmental index specification Calculating means for calculating an evaluation value indicating the likelihood of the worker's heat stroke based on the index specified by the means, the index specified by the work index specifying means and the time during which the work is being performed; and calculating means Comparing means for comparing the evaluation value calculated by the above and a reference value, and alarm means for generating an alarm based on the comparison result by the comparing means.

With the alarm system according to the present invention, the worker does not need to wear extra equipment and can give an alarm about heat stroke.

It is a figure which shows the example of the alarm system in Embodiment 1 of this invention. It is a figure which shows the example of a communication apparatus. It is a flowchart which shows the operation example of the alarm system in Embodiment 1 of this invention. An example of an environmental index is shown. It is a figure which shows the hardware constitutions of a communication apparatus. It is a figure which shows the other example of the alarm system in Embodiment 1 of this invention. It is a figure which shows the hardware constitutions of a management center.

The present invention will be described with reference to the accompanying drawings. The overlapping description will be simplified or omitted as appropriate. In each figure, the same reference numerals indicate the same or corresponding parts.

Embodiment 1 FIG.
FIG. 1 is a diagram showing an example of an alarm system according to Embodiment 1 of the present invention. FIG. 1 shows an example in which the present alarm system includes an elevator device.

The elevator device includes a car 1 and a counterweight 2, for example. The car 1 and the counterweight 2 are suspended from the hoistway 4 by the main rope 3. The main rope 3 is wound around the driving sheave 5. The drive sheave 5 is driven by an electric motor 6. The electric motor 6 is controlled by the control device 7. The control device 7 is connected to the car 1 by a control cable 8. The control device 7 is connected to the communication device 9. The communication device 9 communicates with, for example, an external management center.

FIG. 2 is a diagram illustrating an example of the communication device 9. The communication device 9 includes, for example, a storage unit 10, a work place specifying unit 11, an environment index specifying unit 12, a work content specifying unit 13, a work index specifying unit 14, a calculating unit 15, a comparing unit 16, and an alarm unit 17. Hereinafter, functions and operations of the alarm system will be described in detail with reference to FIGS. FIG. 3 is a flowchart showing an operation example of the alarm system according to Embodiment 1 of the present invention.

Information necessary for this alarm system is stored in the storage unit 10. As an example, the work schedule of the worker is stored in the storage unit 10. For example, the storage unit 10 stores the work schedule of the worker A who is in charge of maintenance of the elevator apparatus. In the work schedule, for example, the contents of work performed by the worker A in one day, the place where the work is performed, the start time of the work, the time required for the work, and the like are registered in advance.

The work place specifying unit 11 specifies a place where the worker is working (S101). The work place specifying unit 11 specifies the work place from the work schedule stored in the storage unit 10, for example.

In addition, since the work schedule is only a schedule, the place where the work is actually performed is not always according to the work schedule. For this reason, the work place specifying unit 11 may specify the place where the worker is working based on the signal from the control device 7. For example, the worker turns on an inspection switch when performing maintenance and inspection of the elevator apparatus. For example, when the inspection switch is ON and a landing button installed on the elevator landing 19 is pressed, the work location identifying unit 11 identifies the landing 19 as a work location. For example, when the landing button on the first floor hall 19 is pressed, the work place identification unit 11 identifies the first floor hall 19 as a work place.

As another example, the car 1 includes an operation panel 20. For example, when the inspection switch is ON and the destination button of the operation panel 20 is pressed, the work place specifying unit 11 specifies the inside of the car 1 as the work place. In addition, an operating device 21 used for maintenance inspection is provided on the car 1. For example, when the inspection switch is ON and the operation device 21 is operated, the work place specifying unit 11 specifies the inside of the hoistway 4 as a work place. When the position of the car 1 is known, the floor on which the maintenance staff is working may be specified.

In the example shown in FIG. 1, the control device 7 is installed in the machine room 22. For example, when the inspection switch is ON and the operation button of the control device 7 is operated, the work place specifying unit 11 specifies the machine room 22 as the work place. The worker turns on the pit switch 23 when entering the pit 4 a of the hoistway 4. For example, if the inspection switch is ON and the pit switch 23 is ON, the work location specifying unit 11 specifies the pit 4a of the hoistway 4 as the work location.

The environmental index specifying unit 12 specifies an index according to the environment of the work place (S102). Hereinafter, this index specified in S102 is also referred to as an environmental index. The environmental index is an index indicating whether or not the environment of the place is likely to become heat stroke. The environmental index specifying unit 12 specifies an environmental index for the work place specified by the work place specifying unit 11.

FIG. 4 shows an example of the environmental index. FIG. 4 shows WBGT (Wet Valve Globe Temperature) as an example of the environmental index. In addition, FIG. 4 quoted from the following.
“Guidelines for prevention of heat stroke in daily life” Ver. 3 definitive edition, [online], Japan Society of Biometeorology, [searched on January 24, 2017], Internet <URL: http://seikisho.jp/pdf/news/shishin.pdf>

FIG. 4 shows an example in which the environmental index depends on the temperature and humidity of the work place. In the example shown in FIG. 4, the environmental index increases as the working place temperature increases. The environmental index increases as the working place humidity increases. An index other than WBGT may be adopted as the environmental index. For example, contrary to the example shown in FIG. 4, the environmental index may be a smaller value as the temperature of the work place is higher. The environmental index may be a smaller value as the working place humidity is higher.

In the example shown in FIG. 4, in order for the environmental index specifying unit 12 to specify the environmental index, information on the temperature and humidity of the work place is required. The communication device 9 may further include, for example, an information acquisition unit 18. The information acquisition unit 18 acquires information on the outdoor temperature and humidity of the day from an external organization such as the Japan Meteorological Agency, for example, via a network or the like. The information acquisition unit 18 acquires, for example, information on the outside air temperature and the outside air humidity every hour in the area where the elevator apparatus is installed. The information acquisition unit 18 may acquire information every 3 hours or every 4 hours, for example. The information acquisition unit 18 may receive only general information such as normal, and may output specific numerical values with reference to past information or the like.

In order to obtain information on the temperature and humidity of the work place, a thermohygrometer may be provided. The thermo-hygrometer is installed, for example, in the hoistway 4, the landing 19, the car 1, and the machine room 22. A thermohygrometer may be installed in any of the above locations, or a thermohygrometer may be installed in all locations. A temperature and humidity meter may be installed in other places. In such a case, the information acquisition unit 18 acquires information on measured values of temperature and humidity from one or more thermohygrometers.

The environment index specifying unit 12 estimates the temperature and humidity of the work place specified by the work place specifying unit 11 from the outside air temperature and the outside air humidity acquired by the information acquisition unit 18, for example. The environmental index specifying unit 12 specifies the environmental index of the work place based on the estimated temperature and humidity of the work place.

Regarding the work place having the same temperature and humidity as the outside air temperature and the outside air humidity, the environment index specifying unit 12 estimates the outside air temperature and the outside air humidity acquired by the information acquisition unit 18 as the temperature and humidity of the work place. However, the temperature and humidity of all work places may not be considered the same as the outside air temperature and outside air humidity. Below, the example of the method by which the environmental index specific | specification part 12 estimates the temperature and humidity of a working place is demonstrated.

Elevator maintenance work is performed, for example, in the interior of the car 1, on the car 1, in the pit 4a of the hoistway 4, the machine room 22, the landing 19, and the like. The work on the car 1 is synonymous with the work on the hoistway 4. The hall 19 is often air-conditioned in summer. For this reason, in the summer season, the temperature of the landing 19 is often lower than the outside air temperature. Similarly, the humidity at the landing 19 is often lower than the outside air humidity. Further, the temperature inside the hoistway 4 is higher than the temperature of the landing 19, and the humidity is often higher than the humidity of the landing 19. However, depending on the structure of the building, it is easy for cold air to enter the hoistway 4, the temperature inside the hoistway 4 may be lower than the outside air temperature, and the humidity may be lower than the outside air humidity.

In order to improve the estimation accuracy of the temperature and humidity of the work place, for example, building environment information is stored in the storage unit 10. The building environment information is, for example, a relational expression or correspondence table for deriving the temperature and humidity of each work place from the outside air temperature and outside air humidity. The environmental index specifying unit 12 may specify the environmental index of each work place based on the temperature and humidity calculated using the building environment information. Table 1 shows an example of building environment information stored in the storage unit 10.

Regarding the work locations registered in Table 1, for example, the first floor hall 19 and the second floor hall 19 may be separated. The same applies to the hoistway 4. Table 1 shows an example in which a monthly correspondence table is stored in the storage unit 10 as building environment information. A correspondence table for each season such as for spring, summer, autumn, and winter may be stored in the storage unit 10.

The work content identification unit 13 identifies the content of work performed by the worker (S103). The work content specifying unit 13 specifies the work content from, for example, a work schedule stored in the storage unit 10.

As described above, since the work schedule is only a schedule, the content of the work actually performed is not always according to the schedule. For this reason, the work content identification unit 13 may identify the content of the work performed by the worker based on the signal from the control device 7. For example, when the inspection switch is ON and the landing button of the landing 19 is pressed, the work content specifying unit 13 specifies inspection of the landing button as the work content.

The work content specifying unit 13 may specify the content of the work performed by the worker based on the signal from the control device 7 and the work place specified by the work place specifying unit 11. For example, a switch for detecting opening / closing of the landing door 24 is provided on the hoistway 4 side of the landing door 24. The work content identification unit 13 identifies the inspection of the landing door 24 as the work content when the work location identified by the work location identification unit 11 is on the car 1 and the opening / closing of the landing door 24 is detected by the switch. To do.

The work content specifying unit 13 may specify the content of work performed by the worker based on the work location specified by the work location specifying unit 11 and the work schedule stored in the storage unit 10. For example, the work content specifying unit 13 displays the work content scheduled to be performed at the same place as the work place specified by the work place specifying unit 11 among the work contents registered in the work schedule. It is specified as the work content that is

Employees may carry terminals equipped with barometers when performing maintenance work. The terminal carried by the worker is, for example, a smartphone. The height at which the worker is present can be determined from the pressure measured by the barometer. The work content identification unit 13 may supplement the identification result by the work location identification unit 11 based on the measurement value by the barometer.

The work index specifying unit 14 specifies an index corresponding to the work content (S104). Hereinafter, this index specified in S104 is also referred to as a work index. The work index is an index indicating whether or not the work of the content is likely to cause heat stroke. For example, the work index becomes a larger value as the work has a higher load. The work index may be a smaller value as the load is higher. The work index may be set based on the experience of the worker. The work index specifying unit 14 specifies a work index for the work content specified by the work content specifying unit 13.

For example, work index information is stored in the storage unit 10. The work index information is, for example, a correspondence table for deriving a work index from work contents. The work index specifying unit 14 may specify the work index of each work content based on the work index information stored in the storage unit 10. Table 2 shows an example of work index information stored in the storage unit 10.

The calculation unit 15 calculates an evaluation value related to heat stroke for the worker who is performing the work (S105). The evaluation value is a value representing the ease of heat stroke of the worker who is performing the work. The evaluation value calculated by the calculation unit 15 may be a value that is large enough to cause heat stroke. The evaluation value may be a small value that is likely to cause heat stroke. The calculating unit 15 calculates an evaluation value based on, for example, the environmental index specified by the environmental index specifying unit 12, the work index specified by the work index specifying unit 14, and the time during which the worker is working. .

For example, the calculation unit 15 first calculates an environmental load and a work load. The environmental index specified by the environmental index specifying unit 12 corresponds to, for example, the value of the environmental load per unit time. For example, the calculation unit 15 calculates the environmental load by taking the time during which the worker is working on the environmental index specified by the environmental index specifying unit 12. In the example illustrated in FIG. 3, as illustrated in S <b> 107, the evaluation value is calculated every time a certain time elapses. For example, the calculating unit 15 calculates the environmental load for the predetermined time by multiplying the environmental index specified by the environmental index specifying unit 12 by the predetermined time. The calculation unit 15 calculates the overall environmental load by adding the newly calculated environmental load for the predetermined time to the environmental load calculated so far. That is, the calculation unit 15 calculates the overall environmental load by integrating the environmental loads calculated at regular intervals.

Similarly, the work index specified by the work index specifying unit 14 corresponds to, for example, a workload value per unit time. For example, the calculation unit 15 calculates the work load by taking the work index specified by the work index specifying unit 14 and taking the time during which the worker is working. As described above, in the example illustrated in FIG. 3, the evaluation value is calculated every time a certain time elapses. For example, the calculation unit 15 calculates the work load for the certain time by applying the certain time to the work index specified by the work index specifying unit 14. The calculation unit 15 calculates the overall workload by adding the newly calculated workload for the certain period of time to the previously calculated workload. That is, the calculation unit 15 calculates the overall work load by integrating the work loads calculated at regular intervals.

The calculation unit 15 calculates an evaluation value based on the calculated environmental load and work load. For example, the calculation unit 15 obtains an evaluation value by the following formula.
(Evaluation value) = (Environment coefficient α × Integrated value of environmental load) + (Work coefficient β × Work load integrated value)
The environmental coefficient α and the work coefficient β are set in advance based on, for example, the worker's experience and acclimatization to heat. The above calculation formula shows an example of a method for calculating an evaluation value. The calculation unit 15 may calculate the evaluation value by another calculation method.

The comparison unit 16 compares the evaluation value calculated by the calculation unit 15 with the reference value (S106). A reference value to be compared with the evaluation value is set in advance. FIG. 3 shows an example in which the evaluation value increases as the heat stroke easily occurs. In such a case, the comparison unit 16 determines whether or not the evaluation value calculated by the calculation unit 15 is greater than the reference value. If the evaluation value calculated by the calculation unit 15 is smaller than the reference value, the processing shown in S101 to S106 is performed again after a predetermined time has elapsed (S107). Thereby, in S106, the evaluation value after a fixed time has passed is compared with the reference value.

The alarm unit 17 generates an alarm based on the comparison result by the comparison unit 16 (S108). In the example shown in FIG. 3, the warning unit 17 issues a warning when the evaluation value calculated by the calculation unit 15 is larger than the reference value. The alarm unit 17 performs an alarm by display or sound, for example. The warning unit 17 may give a warning by vibrating a terminal owned by the worker. The alarm unit 17 may perform an alarm by transmitting an e-mail to a terminal owned by a worker. The alarm unit 17 may perform an alarm by other methods.

On the other hand, when the evaluation value becomes small enough to cause heat stroke, the comparison unit 16 determines whether or not the evaluation value calculated by the calculation unit 15 is smaller than the reference value. In this case, if the evaluation value calculated by the calculation unit 15 is larger than the reference value, the processing shown in S101 to S106 is performed again after a certain time has elapsed. The alarm unit 17 generates an alarm when the evaluation value calculated by the calculation unit 15 is smaller than the reference value.

In the example shown in the present embodiment, an evaluation value representing the likelihood of heat stroke is calculated for the worker who is performing the work. This evaluation value is compared with a reference value, and an alarm is issued according to the comparison result. For this reason, even if the worker does not wear a device for measuring body temperature or heart rate, for example, an alarm regarding heat stroke can be performed. Since the worker does not need to wear extra equipment during work, the movement is not hindered by the equipment.

In the above example, each part indicated by reference numerals 10 to 18 represents a function of the communication device 9. FIG. 5 is a diagram illustrating a hardware configuration of the communication device 9. The communication device 9 includes a processing circuit including, for example, a processor 25 and a memory 26 as hardware resources. The functions of the storage unit 10 are realized by the memory 26. The communication device 9 implements the functions of the units indicated by reference numerals 11 to 18 by executing the program stored in the memory 26 by the processor 25.

FIG. 6 is a diagram showing another example of the alarm system according to Embodiment 1 of the present invention. FIG.1 and FIG.2 shows the example by which an evaluation value is calculated separately in each elevator apparatus. That is, the evaluation value is calculated for work performed at one site. On the other hand, FIG. 6 shows an example in which the management center 27 includes a calculation unit 15, a comparison unit 16, and an alarm unit 17.

The management center 27 manages a plurality of elevator devices. Each elevator device communicates with the management center 27 by the communication device 9. The communication device 9 of each elevator apparatus includes, for example, a storage unit 10, a work place specifying unit 11, an environment index specifying unit 12, a work content specifying unit 13, and a work index specifying unit 14. In such a case, the information on the environmental index specified by the environmental index specifying unit 12 and the information on the work index specified by the work index specifying unit 14 are transmitted from the communication device 9 to the management center 27 via a network or the like. The management center 27 calculates an evaluation value based on information received from the communication device 9, and compares the calculated evaluation value with a reference value. For example, the management center 27 calculates an evaluation value for each worker who is working on that day.

When the evaluation value becomes so large that the heat stroke is likely to occur, the evaluation value is calculated every time a fixed time elapses while the evaluation value calculated by the calculation unit 15 is smaller than the reference value. When the work on a certain site is completed and the worker moves to the next site, the management center 27 receives information on the worker from the communication device 9 of the elevator apparatus of the moving destination. That is, in the example shown in FIG. 6, the evaluation value is calculated for the daily work of the worker.

When the evaluation value calculated by the calculation unit 15 becomes larger than the reference value, the alarm unit 17 generates an alarm from, for example, an elevator apparatus in which an operator is currently working. For example, the alarm unit 17 sounds a buzzer from the control device 7 of the elevator apparatus where the worker is working. The warning unit 17 may give a warning by vibrating a terminal owned by the worker. The alarm unit 17 may perform an alarm by transmitting an e-mail to a terminal owned by a worker.

In the example shown in FIG. 6, each part indicated by reference numerals 15 to 17 represents a function of the management center 27. FIG. 7 is a diagram illustrating a hardware configuration of the management center 27. The management center 27 includes a processing circuit including, for example, a processor 28 and a memory 29 as hardware resources. The management center 27 executes the program stored in the memory 29 by the processor 28, thereby realizing the functions of the units indicated by reference numerals 15 to 17.

The

processors

25 and 28 are also referred to as a CPU (Central Processing Unit), a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, or a DSP. As the

memories

26 and 29, a semiconductor memory, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, or a DVD may be employed. Semiconductor memories that can be used include RAM, ROM, flash memory, EPROM, EEPROM, and the like.

Part or all of the functions of the communication device 9 shown in FIGS. 1 and 2 may be realized by hardware. Similarly, some or all of the functions of the management center 27 shown in FIG. 6 may be realized by hardware. As hardware for realizing the above functions, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof may be employed.

In this embodiment, an example in which the alarm system includes an elevator device has been described. This is an example. The alarm system may include a device or equipment other than the elevator. In such a case, an evaluation value indicating the likelihood of heat stroke is calculated for a worker who handles the apparatus or equipment. The calculated evaluation value is compared with a reference value. An alarm is issued based on the comparison result.

The alarm system according to the present invention can be applied to a system that needs to issue an alarm regarding heat stroke.

1 cage, 2 counterweights, 3 main ropes, 4 hoistways, 5 drive sheaves, 6 electric motors, 7 control devices, 8 control cables, 9 communication devices, 10 storage units, 11 work place specification units, 12 environment index specification units , 13 Work content identification part, 14 Work index identification part, 15 calculation part, 16 comparison part, 17 alarm part, 18 information acquisition part, 19 landing, 20 operation panel, 21 operation device, 22 machine room, 23 pit switch, 24 Landing door, 25 processor, 26 memory, 27 management center, 28 processor, 29 memory

Claims

A work location identifying means for identifying the location where the worker is working,
Environmental index specifying means for specifying an index corresponding to the environment for the work place specified by the work place specifying means;
Work content identification means for identifying the content of work performed by workers,
For the work content specified by the work content specifying means, work index specifying means for specifying an index according to the content;
Calculation for calculating an evaluation value indicating the likelihood of the worker to suffer from heat stroke based on the index specified by the environmental index specifying means, the index specified by the work index specifying means, and the time during which the work is performed Means,
Comparison means for comparing the evaluation value calculated by the calculation means with a reference value;
Alarm means for generating an alarm based on a comparison result by the comparison means;
With alarm system.
The environmental index specifying means estimates the temperature and humidity of the work place specified by the work place specifying means from the outside air temperature and the outside air humidity, and calculates an index corresponding to the environment of the work place based on the estimated temperature and humidity. The alarm system according to claim 1 to be specified.
The alarm system according to claim 2, wherein the index corresponding to the environment increases as the temperature of the work place increases and increases as the humidity of the work place increases.
The alarm system according to claim 2, wherein the index according to the environment is smaller as the temperature of the work place is higher, and is smaller as the humidity of the work place is higher.
The alarm system according to any one of claims 1 to 4, wherein the work location specifying means specifies a location where an operator is working based on a signal from an elevator control device.
The alarm system according to any one of claims 1 to 4, wherein the work content specifying means specifies the content of work performed by a worker based on a signal from an elevator control device.
The alarm system according to claim 6, wherein the work content specifying means specifies the content of work performed by a worker based on the work place specified by the work place specifying means.
It further comprises storage means for storing the work schedule of the worker,
The work content specifying means specifies the content of work performed by a worker based on the work place specified by the work place specifying means and the work schedule stored in the storage means. 5. The alarm system according to any one of 4.