CN110235185B

CN110235185B - Alarm system

Info

Publication number: CN110235185B
Application number: CN201780085050.6A
Authority: CN
Inventors: 长德典宏; 井上淳
Original assignee: Mitsubishi Electric Building Techno Service Co Ltd
Current assignee: Mitsubishi Electric Building Solutions Corp
Priority date: 2017-02-15
Filing date: 2017-02-15
Publication date: 2021-08-03
Anticipated expiration: 2037-02-15
Also published as: JP6525118B2; JPWO2018150486A1; KR20190053971A; WO2018150486A1; KR102084123B1; CN110235185A

Abstract

An environment index specifying unit (12) specifies an index corresponding to the environment for the work place specified by the work place specifying unit (11). A work index specifying unit (14) specifies an index corresponding to the work content specified by the work content specifying unit (13). A calculation unit (15) calculates an evaluation value indicating the degree of difficulty of heatstroke of the operator. A comparison unit (16) compares the evaluation value calculated by the calculation unit (15) with a reference value. An alarm unit (17) generates an alarm based on the comparison result of the comparison unit (16).

Description

Alarm system

Technical Field

The present invention relates to alarm systems.

Background

As described in patent document 1, an elevator operator performs maintenance work or construction work of an elevator at various sites. The workers must pay attention to the absence of heatstroke especially in summer.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2004-62621

Disclosure of Invention

Problems to be solved by the invention

Conventionally, an operator wears an instrument for measuring body temperature, heart rate, or a heatstroke index, for example, on his/her body to perform an operation. However, when such an instrument is worn on the body, there is a problem that the operation is hindered. Further, since most of the workers belong to the elevator maintenance company, there is a problem that the cost increases when the above-described devices are distributed to all the workers.

The present invention has been made to solve the above problems. The invention aims to provide an alarm system which can alarm heatstroke without needing an operator to wear extra equipment.

Means for solving the problems

The alarm system of the present invention comprises: a work place determination unit that determines a place where the worker is performing work; an environment index determination unit that determines an index corresponding to an environment for the work place determined by the work place determination unit; a work content determination unit that determines the content of a work being performed by an operator; a job index determination unit that determines an index corresponding to the content of the job determined by the job content determination unit; a calculation unit that calculates an evaluation value indicating a degree of difficulty of heatstroke of the operator, based on the index determined by the environment index determination unit, the index determined by the work index determination unit, and the time during which the work is performed; a comparison unit that compares the evaluation value calculated by the calculation unit with a reference value; and an alarm unit that generates an alarm according to a comparison result of the comparison unit.

Effects of the invention

According to the alarm system of the present invention, the operator can give an alarm about heatstroke without wearing extra equipment.

Drawings

Fig. 1 is a diagram showing an example of an alarm system according to embodiment 1 of the present invention.

Fig. 2 is a diagram showing an example of a communication apparatus.

Fig. 3 is a flowchart showing an example of the operation of the alarm system according to embodiment 1 of the present invention.

Fig. 4 shows an example of the environment index.

Fig. 5 is a diagram showing a hardware configuration of the communication apparatus.

Fig. 6 is a diagram showing another example of the alarm system according to embodiment 1 of the present invention.

Fig. 7 is a diagram showing a hardware configuration of the management center.

Detailed Description

The invention is described with reference to the accompanying drawings. The duplicate description will be appropriately simplified or omitted. Like reference symbols in the various drawings indicate like or corresponding parts.

Embodiment mode 1

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 has an elevator apparatus.

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

Fig. 2 is a diagram showing an example of the communication device 9. The communication device 9 includes, for example, a storage unit 10, a work place specification unit 11, an environment index specification unit 12, a work content specification unit 13, a work index specification unit 14, a calculation unit 15, a comparison unit 16, and an alarm unit 17. The function and operation of the alarm system will be described in detail below with reference to fig. 3 and 4. Fig. 3 is a flowchart showing an example of the operation of the alarm system according to embodiment 1 of the present invention.

The storage unit 10 stores information necessary for the alarm system. As an example, the storage unit 10 stores a work schedule of the worker. For example, the storage unit 10 stores a work schedule of the worker a who is responsible for maintenance of the elevator apparatus. In the work schedule, for example, the content of the work performed by the worker a during the 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 specification unit 11 specifies a place where the worker is working (S101). The work place specifying unit 11 specifies a work place based on, for example, a work schedule stored in the storage unit 10.

Since the work schedule is predetermined, the place where the work is actually performed does not necessarily coincide with the work schedule. Therefore, the work place specifying unit 11 may specify the place where the worker is performing the work based on the signal from the control device 7. For example, when performing maintenance inspection of an elevator apparatus, an operator turns on an inspection switch. For example, when the spot detection switch is turned on and a landing button provided in a landing 19 of the elevator is pressed, the work place specification unit 11 specifies the landing 19 as a work place. For example, when a landing button of a landing 19 on floor 1 is pressed, the work place specification unit 11 specifies the landing 19 on floor 1 as a work place.

As another example, the car 1 includes an operation panel 20. For example, when the point detection switch is turned on and the destination button of the operation panel 20 is pressed, the work place specification unit 11 specifies the inside of the car 1 as a work place. An operating device 21 used for maintenance and inspection is provided above the car 1. For example, when the point detection switch is turned on and the operating device 21 is operated, the work place specification unit 11 specifies the inside of the hoistway 4 as a work place. Knowing the position of the car 1, it can also be determined that the maintenance person is working on several floors.

In the example shown in fig. 1, the control device 7 is provided in the machine room 22. For example, when the click switch is turned on and the operation button of the control device 7 is operated, the work place specification unit 11 specifies the machine room 22 as a work place. When the operator enters the pit 4a of the hoistway 4, the pit switch 23 is turned on. For example, when the spot detection switch is turned on and the pit switch 23 is turned on, the work place specification unit 11 specifies the pit 4a of the hoistway 4 as a work place.

The environment index determination unit 12 determines an index corresponding to the environment of the work place (S102). Hereinafter, this index determined in S102 will also be referred to as an environmental index. The environment index is an index showing whether the environment of the place is susceptible to heat stroke. The environment index specifying unit 12 specifies an environment index for the work place specified by the work place specifying unit 11.

Fig. 4 shows an example of the environment index. As an example of the environmental index, fig. 4 shows WBGT (Wet bulb Temperature). In addition, fig. 4 refers to the following.

"における Hot disease prevention for daily life" Ver.3 draft, [ online ], Japanese society for symptomatology, [ Pincheng 29/24/J kengso ], Internet < URL: http: seikishouu.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 has a larger value as the temperature of the workplace is higher. The environmental index has a larger value as the humidity of the work place is larger. As the environmental index, an index other than WBGT may be used. For example, in contrast to the example shown in fig. 4, the environmental index may be a smaller value as the temperature of the workplace is higher. The environmental index is a smaller value as the humidity of the work place is larger.

In the example shown in fig. 4, information on the temperature and humidity of the work place is required so that the environment index specifying unit 12 specifies the environment index. The communication device 9 may further include an information acquisition unit 18, for example. The information acquiring unit 18 acquires information of the atmospheric temperature and the atmospheric humidity on the day from an external unit such as a weather station via a network or the like. The information acquisition unit 18 acquires information on the atmospheric temperature and atmospheric humidity every 1 hour of the area where the elevator apparatus is installed, for example. The information acquiring unit 18 may acquire information every 3 hours or every 4 hours, for example. The information acquiring unit 18 may receive only the general information similar to the year round and output a specific numerical value by referring to the past information and the like.

A temperature and humidity meter may be provided to obtain information on the temperature and humidity of the work place. The temperature and humidity meters are installed in, for example, the hoistway 4, the landing 19, the car 1, and the machine room 22. The temperature and humidity meter may be installed at any place or may be installed at any place. The temperature and humidity meter can be arranged at other places. In this case, the information acquisition unit 18 acquires information on the actual measurement values of the temperature and the humidity from one or a plurality of temperature/humidity meters.

The environment index specifying unit 12 estimates the temperature and humidity of the work place specified by the work place specifying unit 11, for example, based on the atmospheric temperature and atmospheric humidity acquired by the information acquiring unit 18. The environment index determination unit 12 determines an environment index of the work place based on the estimated temperature and humidity of the work place.

The environmental index determination unit 12 estimates the atmospheric temperature and the atmospheric humidity acquired by the information acquisition unit 18 as the temperature and the humidity of the work place having the same temperature and humidity as the atmospheric temperature and the atmospheric humidity. However, the temperature and humidity of all the work places are not necessarily considered to be the same as the atmospheric temperature and humidity. Next, an example of a method of estimating the temperature and humidity of the work place by the environment index specifying unit 12 will be described.

The maintenance work of the elevator is performed, for example, inside the car 1, above the car 1, in the pit 4a of the hoistway 4, in the machine room 22, in the landing 19, and the like. The operation above the car 1 is the same as the operation in the hoistway 4. The landing 19 tends to be air conditioned during the summer months. Therefore, in summer, the temperature of the landing 19 tends to be lower than the atmospheric temperature. Also, the humidity at the landing 19 tends to be lower than atmospheric humidity. The temperature inside the hoistway 4 may be higher than the temperature of the landing 19, and the humidity thereof may be higher than the humidity of the landing 19. However, depending on the structure of the building, cold air tends to enter the hoistway 4, and the temperature inside the hoistway 4 is lower than the atmospheric temperature and the humidity thereof is lower than the atmospheric humidity.

In order to improve the accuracy of estimating 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 a correspondence table for deriving the temperature and humidity of each work place from the atmospheric temperature and the atmospheric humidity. The environment index determination unit 12 may determine the environment 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.

[ TABLE 1 ]

Work place	Period of time	Atmospheric temperature	Estimating temperature	Atmospheric humidity	Estimating humidity
						Machine room
	8 month	20	22	-	-
						Machine room	8 month	22	24	-	-
Machine room	8 month	24	26	-	-
						：	：	：	：	：	：
Machine room	8 month	-	-	60	60
						Machine room	8 month	-	-	62	61
：	：	：	：	：	：
						Pit	8 month	20	20	-	-
：	：	：	：	：	：

The work places registered in table 1 can be divided into, for example, a landing 19 of 1 floor and a landing 19 of 2 floors. The same applies to the hoistway 4. Table 1 shows an example in which the monthly correspondence table is stored in the storage unit 10 as building environment information. The storage unit 10 may store a correspondence table for each season of spring, summer, autumn, and winter.

The job content specifying unit 13 specifies the content of the job being performed by the worker (S103). The job content specifying unit 13 specifies the job content based on, for example, a job schedule stored in the storage unit 10.

As described above, the job schedule is predetermined after all, and thus the content of the job actually performed does not necessarily coincide with the job schedule. Therefore, the work content specifying unit 13 may specify the content of the work performed by the operator based on the signal from the control device 7. For example, when the spot detection switch is turned on and the landing button of the landing 19 is pressed, the operation content determination unit 13 determines the spot detection of the landing button as the operation content.

The work content specifying unit 13 may specify the content of the work performed by the operator 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 and closing of the landing door 24 is provided on the hoistway 4 side of the landing door 24. When the work place specified by the work place specifying unit 11 is above the car 1 and the opening and closing of the landing door 24 is detected by the switch, the work content specifying unit 13 specifies the point of the landing door 24 as the work content.

The work content specifying unit 13 may specify the content of the work performed by the operator based on the work place specified by the work place specifying unit 11 and the work schedule stored in the storage unit 10. For example, the work content specifying unit 13 specifies, as the work content currently being performed, the work content expected 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.

When performing maintenance work, an operator sometimes carries a terminal having an air pressure gauge. The terminal carried by the operator is, for example, a smartphone. The height of the worker can be known from the air pressure measured by the air pressure gauge. The work content specifying unit 13 complements the result of the determination by the work place specifying unit 11 with the measurement value of the barometer.

The job index determination section 14 determines an index corresponding to the job content (S104). Hereinafter, this index determined in S104 will also be referred to as a job index. The work index is an index showing whether the work for performing the content is easy to generate heat. For example, the higher the load, the larger the value of the job index. The work index may be a smaller value at a higher load work. The operation index may be set based on the experience of the operator. The job index determination section 14 determines a job index for the job content determined by the job content determination section 13.

For example, the storage unit 10 stores therein the job index information. The job index information is, for example, a correspondence table for deriving a job index from the job content. 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 the work index information stored in the storage unit 10.

[ TABLE 2 ]

The calculation unit 15 calculates an evaluation value regarding heatstroke for the worker who is performing the work (S105). The evaluation value is a value showing the degree of difficulty of heatstroke of the worker who is performing the work. The evaluation value calculated by the calculation unit 15 may be a larger value when the heat stroke is more likely. The evaluation value may be smaller as heat stroke becomes easier. The calculation unit 15 calculates an evaluation value from, for example, the environment index specified by the environment index specification unit 12, the work index specified by the work index specification unit 14, and the time during which the worker performs the work.

For example, the calculation unit 15 first calculates an environmental load and a workload. The environmental index specified by the environmental index specifying unit 12 corresponds to, for example, a value of an environmental load per unit time. The calculation unit 15 calculates the environmental load by, for example, multiplying the environmental index determined by the environmental index determination unit 12 by the time during which the worker performs the work. In the example shown in fig. 3, as shown in S107, the evaluation value is calculated every time a prescribed time elapses. For example, the calculation unit 15 calculates the environmental load for the predetermined time by multiplying the environmental index specified by the environmental index specification 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 integrates the environmental loads calculated every predetermined time period to calculate the overall environmental load.

Similarly, the work index specified by the work index specifying unit 14 corresponds to, for example, a value of a work load per unit time. The calculation unit 15 calculates the work load by, for example, multiplying the work index determined by the work index determination unit 14 by the time during which the worker performs the work. As described above, in the example shown in fig. 3, the evaluation value is calculated every time a predetermined time elapses. For example, the calculation unit 15 calculates the workload for the predetermined time by multiplying the work index specified by the work index specification unit 14 by the predetermined time. The calculation unit 15 calculates the entire workload by adding the newly calculated workload for the predetermined time to the previously calculated workload. That is, the calculation unit 15 integrates the workload calculated every predetermined time to calculate the entire workload.

The calculation unit 15 calculates an evaluation value from the calculated environmental load and workload. For example, the calculation unit 15 obtains the evaluation value by the following equation.

(evaluation value) ═ accumulated value of (environmental coefficient α × environmental load) + (accumulated value of work coefficient β × work load)

The environment coefficient α and the work coefficient β are set in advance in accordance with, for example, the experience of the worker and the adaptation to summer heat. The above calculation formula shows an example of a calculation method of the evaluation value. The calculation unit 15 may calculate the evaluation value by another calculation method.

The comparing unit 16 compares the evaluation value calculated by the calculating unit 15 with a reference value (S106). The reference value to be compared with the evaluation value is set in advance. Fig. 3 shows an example of a value that is more valuable when the heat stroke is more likely. In this case, the comparison unit 16 determines whether or not the evaluation value calculated by the calculation unit 15 is larger than a 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). Thus, in S106, the evaluation value after the lapse of a predetermined time is compared with the reference value.

The alarm unit 17 generates an alarm based on the comparison result of the comparison unit 16 (S108). In the example shown in fig. 3, the alarm unit 17 gives an alarm when the evaluation value calculated by the calculation unit 15 is larger than the reference value. The alarm unit 17 gives an alarm by, for example, display or sound. The alarm unit 17 may alarm by vibrating a terminal held by an operator. The alarm unit 17 may send an alarm by sending an email to a terminal held by the worker. The alarm unit 17 may alarm by another method.

On the other hand, when the evaluation value becomes smaller as the heat stroke becomes easier, 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 predetermined time has elapsed. The alarm unit 17 generates an alarm when the evaluation value calculated by the calculation unit 15 is smaller than a reference value.

In the example shown in the present embodiment, an evaluation value showing the degree of difficulty in heatstroke is calculated for the worker who is working. The evaluation value is compared with a reference value, and an alarm is generated based on the comparison result. Therefore, even when the worker does not wear an instrument for measuring body temperature, heart rate, or the like, for example, the worker can give an alarm about heatstroke. The operator does not need to wear extra equipment during operation, so that the movement is not hindered by the equipment.

In the above example, each part shown by reference numerals 10 to 18 represents a function of the communication device 9. Fig. 5 is a diagram showing a hardware configuration of the communication device 9. The communication device 9 has, as hardware resources, processing circuits including, for example, a processor 25 and a memory 26. The functions of the storage unit 10 are realized by the memory 26. The communication device 9 realizes the functions of the respective parts shown by reference numerals 11 to 18 by executing a 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 2 show examples of calculating evaluation values individually for each elevator apparatus. That is, the evaluation value is calculated for a job performed on one site. On the other hand, fig. 6 shows an example in which the management center 27 includes the calculation unit 15, the comparison unit 16, and the alarm unit 17.

The management center 27 manages a plurality of elevator apparatuses. Each elevator apparatus communicates with the management center 27 via the communication device 9. The communication device 9 of each elevator device includes, for example, a storage unit 10, a work place specification unit 11, an environment index specification unit 12, a work content specification unit 13, and a work index specification unit 14. In this case, the information of the environment index determined by the environment index determining section 12 and the information of the work index determined by the work index determining section 14 are transmitted from the communication device 9 to the management center 27 via a network or the like. In the management center 27, an evaluation value is calculated from the information received from the communication device 9, and the calculated evaluation value is compared with a reference value. For example, the management center 27 calculates the evaluation value for each worker who works on the day.

When the evaluation value is larger as the heat stroke becomes easier, the evaluation value is calculated every time a predetermined time elapses while the evaluation value calculated by the calculation unit 15 is smaller than the reference value. When the work at 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 as the moving target. That is, in the example shown in fig. 6, the evaluation value is calculated for the work of the worker for one day.

The alarm unit 17 generates an alarm, for example, in an elevator apparatus currently operated by a worker when the evaluation value calculated by the calculation unit 15 is larger than a reference value. For example, the alarm unit 17 causes the control device 7 of the elevator apparatus, which is being operated by the operator, to sound a buzzer. The alarm unit 17 may alarm by vibrating a terminal held by an operator. The alarm unit 17 may send an alarm by sending an email to a terminal held by the worker.

In the example shown in fig. 6, the parts indicated by reference numerals 15 to 17 represent functions of the management center 27. Fig. 7 is a diagram showing a hardware configuration of the management center 27. The management center 27 has, as hardware resources, processing circuits including, for example, a processor 28 and a memory 29. The management center 27 realizes the functions of the respective sections shown by reference numerals 15 to 17 by executing a program stored in the memory 29 by the processor 28.

The

processors

25 and 28 are also referred to as a CPU (Central Processing Unit), a Central Processing Unit, a Processing device, an arithmetic device, a microprocessor, a microcomputer, or a DSP. The

memories

26 and 29 may be semiconductor memories, magnetic disks, flexible disks, optical disks, compact disks, mini disks, or DVDs (Digital Versatile disks). Semiconductor memories that can be used include RAM (Random Access Memory), ROM (Read Only Memory), flash Memory, EPROM (erasable Programmable Read Only Memory), EEPROM (electrically erasable Programmable Read-Only Memory), and the like.

Part or all of the functions of the communication device 9 shown in fig. 1 and 2 may be implemented by hardware. Similarly, a part 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 used.

In the present embodiment, an example in which the alarm system includes an elevator device is described. This is only an example. The present alarm system may include devices or facilities other than the elevator. In this case, an evaluation value indicating the degree of difficulty in heatstroke is calculated for the worker who operates the apparatus, the device, or the like. Then, the calculated evaluation value is compared with a reference value. An alarm is generated based on the comparison result.

Industrial applicability

The warning system of the present invention can be applied to a system that needs to warn about heatstroke.

Description of the reference symbols

1, a lift car; 2, counterweight; 3, a main rope; 4, a shaft; 5 driving the rope wheel; 6, a motor; 7 a control device; 8 a control cable; 9 a communication device; 10 a storage section; 11 a work place specifying unit; 12 an environment index determination section; 13 a job content determination unit; 14 a job index determination section; 15 a calculation unit; 16 a comparison unit; 17 an alarm section; 18 an information acquisition unit; 19 landing; 20 an operation panel; 21 an operation device; 22 machine room; 23 pit switch; a 24 landing door; 25 a processor; 26 a memory; 27 a management center; 28 a processor; 29 memory.

Claims

1. An alarm system, wherein the alarm system has:

a work place determination unit that determines a place where the worker is performing work;

an environment index determination unit that determines an index corresponding to an environment for the work place determined by the work place determination unit;

a work content determination unit that determines the content of a work being performed by an operator;

a job index determination unit that determines an index corresponding to the content of the job determined by the job content determination unit;

a calculation unit that calculates an evaluation value indicating a degree of difficulty of heatstroke of the operator, based on the index determined by the environment index determination unit, the index determined by the work index determination unit, and the time during which the work is performed;

a comparison unit that compares the evaluation value calculated by the calculation unit with a reference value; and

an alarm unit which generates an alarm according to a comparison result of the comparison unit.

2. The alarm system of claim 1,

the environment index determining unit estimates the temperature and humidity of the work place determined by the work place determining unit based on the atmospheric temperature and atmospheric humidity, and determines an index corresponding to the environment of the work place based on the estimated temperature and humidity.

3. The alarm system of claim 2,

the index corresponding to the environment has a larger value as the temperature of the work place is higher, and has a larger value as the humidity of the work place is higher.

4. The alarm system of claim 2,

the index corresponding to the environment has a smaller value as the temperature of the work place is higher, and has a smaller value as the humidity of the work place is higher.

5. The alarm system according to any one of claims 1 to 4, wherein,

the work place determination means determines a place where the worker is working, based on a signal from a control device of the elevator.

6. The alarm system according to any one of claims 1 to 4, wherein,

the work content determination means determines the content of work being performed by the operator based on a signal from the control device of the elevator.

7. The alarm system of claim 6,

the work content determination unit also determines the content of the work being performed by the worker based on the work place determined by the work place determination unit.

8. The alarm system according to any one of claims 1 to 4, wherein,

the alarm system also has a storage unit that stores a schedule of work by the worker,

the work content determination unit determines the content of the work being performed by the worker based on the work place determined by the work place determination unit and the work schedule stored in the storage unit.