KR20150108985A - Safety management system and operating method thereof - Google Patents

Abstract

Disclosed in the present invention is a safety management system which detects access to a dangerous region having a high correlation with the occurrence of a disaster and the proximity of dangerous elements such as moving body equipment or the like in real time and outputs a warning message in advance to workers at a manufacturing site, a hospital, and an amusement park, patients, or users of the amusement park. The present invention includes: a beacon which is installed in a dangerous region and moving body equipment at a manufacturing site, a hospital, and an amusement park, and transmits a packet including identifier information at preset time intervals in a RF signal form; and a listener which receives the packet transferred in the RF signal form from the beacon, determines that it should be determined as the proximity of the dangerous region or the moving body equipment if the received packet is detected more than preset times within a predetermined period of time, and outputs a warning message in a preset form.

Description

[0001] SAFETY MANAGEMENT SYSTEM AND OPERATING METHOD THEREOF [0002]

The present invention relates to a safety management system and a method of operating the safety management system. More particularly, the present invention relates to a safety management system and a method of operating the safety management system, And a method of operating the safety management system. [0002] The present invention relates to a safety management system and a method of operating the same.

At present, in order to prevent the occurrence of industrial accidents at the manufacturing site, safety training manuals or manuals are established, and workers are provided with uniform safety education. Also, the workers themselves visually recognize the danger signs or the prohibition signs, And it is difficult to escape from the conventional safety management method of avoiding the danger.

These methods not only give risk signals to the workers in real time, but they also provide all workers with risk information at a common and usual level. For those workers who are working on the job, In addition to not being able to sense it urgently, it recognizes it as a degree of carelessness, and as a way to fundamentally prevent safety accidents, it is not realistic enough to reduce human and physical industrial accidents.

Therefore, it is required to develop a real-time alarm system that can provide proximity notification information of objective and realistic risk elements using information and communication technology in order to prevent industrial accidents at the manufacturing site from existing formal and conventional safety management .

Patent No. 10-0789420 discloses a method for estimating an additional time delay caused by an obstacle based on propagation time information included in a measurement signal by using a maximum likelihood estimation method based on a conditional probability density function in an indoor non- And an error correction technique for ultra-wideband wireless positioning of the mobile station.

Japanese Patent Application Laid-Open No. 10-0942352 discloses an ultrasonic diagnostic apparatus that uses a measurement node disposed at a fixed position in a room and at least one reception node among a plurality of reception nodes to detect an ultrasonic wave which changes in accordance with a change in indoor environmental factors such as temperature or humidity Discloses a technique for estimating the position of an object by calculating a velocity.

The matters described in the background section described above are intended to enhance understanding of the background of the invention and may include matters not previously known to those skilled in the art.

The present invention has been developed in order to solve such a problem, and its object is to detect in real time the proximity of various mobile equipment to dangerous factors related to a disaster and various mobile equipment to a worker, a patient, an amusement park user etc. at a manufacturing site, a hospital, And outputs an alarm message in a predetermined format so as to minimize human and material loss by preventing occurrence of a disaster in advance.

According to an embodiment of the present invention, a beacon is installed in a dangerous area and various dangerous mobile devices, and transmits a packet including identifier information at an established time interval as an RF signal; And a listener for receiving a packet transmitted as an RF signal from the beacon and determining that the received packet is more than a predetermined number of times within a predetermined time, and outputting an alert message of a predetermined format.

The beacon transmits the packet including the identifier information as an RF signal at a preset number of times per second, and the transmission region of the RF signal can be adjusted to a predetermined radius by adjusting the output voltage.

The listener intermittently outputs an alarm message at a first interval for a predetermined time if the packet transmission of the beacon is set to A cycles per second or more and transmits the alarm message for a predetermined time to the first interval The number of times of repetition, the number of times of repetition, and the time of outputting the alarm message are determined according to the working environment and the user's centering Can be set variable.

The listener can output an alarm message to at least one of an alarm transmission through a buzzer, a blinking of a lamp mounted on a helmet, or a vibration occurrence when a dangerous area or proximity of a mobile equipment is determined.

The beacon includes a power supply unit for supplying operation power; A controller for controlling transmission of a packet including identifier information and transmitting a packet at predetermined time intervals by a random backoff timer to prevent collision with a packet transmitted in another beacon in the same area; And a transmitter for transmitting a packet including the identifier information provided by the controller as an RF signal.

Wherein the listener is composed of a primary battery or a secondary battery and supplies power necessary for operation of the listener; A receiving unit for receiving an RF signal transmitted from a beacon installed in a mobile device and extracting the packet and providing the RF signal to a control unit; A controller for checking the CRC of the packet provided by the receiver and counting the value of the alarm history field in the case of coincidence to determine whether the mobile device is in proximity to a mobile device which is a risk factor of a disaster and to output an alarm message; First alarm means for outputting a proximity alarm message of the moving object equipment as an alarm under the control of the control unit; And a second alarm means for outputting a moving object equipment proximity alarm message according to the control of the control unit by blinking the lamp.

If the process related to the output of the alarm message is not executed, the controller switches to the sleep mode to prevent power consumption.

According to another embodiment of the present invention, a beacon mounted in a dangerous area or a moving object equipment carries out a random backoff timer counter, and when the random backoff timer counter terminates, transmitting a beacon with an RF signal as a packet including identifier information ; A listener carried by an operator receives a packet transmitted in an RF signal from the beacon and counts an alarm history field value; Determining whether the counter value of the alarm history field value is equal to or greater than a reference value within a predetermined period of time, and outputting an alarm message in a predetermined format, and outputting an alarm message in a predetermined format.

When the transmission of the packet including the identifier information is completed, the beacon re-executes the random backoff timer counter to prevent collision with the packet transmitted in the beacon, and the listener transmits the CRC in the packet including the identifier information transmitted from the beacon It is possible to check whether the packet is received or not.

The listener checking a status of a timer toggle; If the timer toggle is set to '0', it is determined that the alarm message is output; and if the reception counter (rxCount) of the alarm history is 1 or more, setting a page value of the index position to 1; Calculating a total of pages of the alarm history (AlertHistory) and comparing the total number of pages with each other; Determining whether the output of the alarm message exceeds the set time if the sum of the calculated pages is equal to the total number of pages; If the output of the alarm message does not pass the preset time, the page value is 1, so that the output of the alarm message is continuously maintained; Stopping the output of the alarm message even if the page value of the current index is set to 1 if the output of the alarm message has elapsed; Determining whether rxCount is equal to or greater than 1 if the sum of the calculated pages is not equal to the total number of pages; Outputting an alarm message if rxCount is equal to or greater than 1 and stopping outputting an alarm message if rxCount is less than 1, Changing the TimerToggle value to 1 to initialize the page, rxCount of the index, when the routine of outputting and stopping the alarm message is completed; If the state of the timer toggle is set to '1', it is determined that an initialization task necessary for outputting a warning message is performed, a page, rxCount value of an index position is initialized, and a timer toggle is changed to 0 so that an alarm message output control can be executed A method of operating a safety management system including a process is provided.

As described above, according to the embodiment of the present invention, in order to prevent the occurrence of industrial accidents at the manufacturing site, safety education manuals or textbooks are provided to employees in a uniform safety education or safety education through safety signs or safety posters It is possible to prevent the occurrence of industrial accidents in advance by notifying workers in advance of the occurrence types and risks of industrial accidents irrespective of their place or location in a wide industrial field or a work site beyond the limit of industrial accident prevention activities. An effect of minimizing human and material loss can be provided.

In addition, according to the embodiment of the present invention, it is possible to detect in real time the risk that a heavy industry industrial disaster may occur, to predict what type of heavy industrial industrial disaster can occur, The effect of minimizing human and material losses can be provided by allowing the operator to take measures for preventing industrial accidents in advance.

In addition, the task manager can predict the types and risks of the industrial accidents that may occur at present, and determine whether or not the task progresses, thereby providing the effect of preventing the occurrence of industrial accidents in advance.

In addition, the present invention has an effect of preventing an accident from occurring in advance by outputting an alarm message in a predetermined format in real time to a dangerous area or an amusement park user in a hospital or an amusement park in real time by sensing the approach of a dangerous area or a dangerous moving object.

1 is a schematic view of a safety management system according to an embodiment of the present invention.
2 is a diagram showing a detailed configuration of a beacon in a safety management system according to an embodiment of the present invention.
3 is a diagram showing the detailed configuration of the listener in the safety management system according to the embodiment of the present invention.
4 is a flow chart illustrating the operation of a beacon in a safety management system according to an embodiment of the present invention.
5 is a flow chart illustrating operation of a listener in a safety management system according to an embodiment of the present invention.
6 is a flow chart illustrating detailed operation of a listener in a safety management system according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention.

The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are given the same reference numerals throughout the specification.

In addition, since the components shown in the drawings are arbitrarily shown for convenience of explanation, the present invention is not necessarily limited to those shown in the drawings.

1 is a schematic view of a safety management system according to an embodiment of the present invention.

1, the present invention includes a beacon 100 and a listener 200 that are connected by wireless communication within a predetermined radius.

The beacon 100 has identifier information, and is installed in various types of mobile equipment, and in risk factors that are highly related to the occurrence of a disaster in a manufacturing site, a hospital, an amusement park, and the like.

The beacon 100 is connected to other beacons 100 installed in the same area as the beacon 100 and is communicable with other beacons 100 in the vicinity of the beacons 100 to exchange packets with each other. RF signal.

For example, the beacon 100 can transmit a packet including the identifier information in an RF signal up to 255 times per second, and the transmission region of the RF signal can be adjusted to a predetermined radius by adjusting the output voltage.

The listener 200 may be carried by a worker at a manufacturing site, a patient of a hospital, a user of a playground, or a helmet or a belt. The beacon 100 receives a packet transmitted as an RF signal, And if the counter of the alarm history field value is detected to be equal to or greater than the preset reference number within a set time, it is determined that there is a dangerous element highly related to the occurrence of the disaster or proximity of the mobile equipment.

The listener 200 may be carried by a worker at a manufacturing site, a patient of a hospital, a user of an amusement park, or a helmet or a belt. The beacon 100 receives a packet transmitted in an RF signal, The CRC (Cyclical Redundancy Check) of the CRC is checked, and when the CRC is identical, the value of the alarm field is counted.

If the counter of the alarm field value is detected more than a preset number of times within a predetermined time, the listener 200 outputs a warning message in a predetermined format determined as a dangerous element highly related to the occurrence of a disaster or proximity of a moving object.

The listener 200 intermittently outputs an alarm message for a predetermined time period if it is received B times or more per second when packet transmission through the RF signal in the beacon 100 is set at A per second, The alarm message is output at a faster interval than the reception of the B signal. If the signal is received more than D times per second, the alarm message is output as a continuous sound for a predetermined time.

For example, when the packet transmission through the RF signal in the beacon 100 is set to 255 times per second, the listener 200 repeats 3 times within 0.5 times per second to 120 times, Message is output at a first interval, and if it is received three times repeatedly within 120 times or more than 124 times per 0.5 second, an intermittent alarm message is output at a second interval that is denser than the first interval for 5 seconds, and 125 times or more per 0.5 second When it is received, it outputs an alarm message for 5 seconds continuously.

The received packet, the time, the number of repetitions, and the output time of the alarm message can be set according to the work environment and the user's center.

The listener 200 can output an alarm message by transmitting an alarm through a buzzer or blinking or vibrating a lamp mounted on an operator's helmet.

2 is a diagram showing a detailed configuration of a beacon in a safety management system according to an embodiment of the present invention.

2, the beacon 100 includes a power source unit 101, a control unit 102, and a transmission unit 103. [

The power supply unit 101 supplies a voltage necessary for operation of the beacon 100. [

When the system is initialized, the controller 102 sets a clock source, sets a clock rate, sets a core voltage for determining a control voltage, and performs radio block initialization in which various registers for transmitting a packet including identifier information are set And performs GPIO (general-purpose input / output) initialization, which sets the driving of external circuits such as a lamp and a buzzer to output an alarm message, which can monitor the operation of the transmitter.

The control unit 102 includes a random back off timer and operates a random backoff timer before transmitting a packet. After the counter of the timer expires, the control unit 102 transmits a packet including the identifier information, The collision of the RF signal transmitted from the beacon 100 is prevented.

The control unit 102 continuously transmits packets at predetermined time intervals with the setting of the random back-off timer.

The transmitter 103 includes an RF communication module and transmits a packet including the identifier information provided by the controller 102 as an RF signal.

The transmitter 103 may adjust the output voltage to adjust the transmission range of the RF signal to a predetermined radius.

3 is a diagram showing the detailed configuration of the listener in the safety management system according to the embodiment of the present invention.

3, the listener 200 includes a power source unit 201, a receiving unit 202, a control unit 203, a first driving unit 204, a buzzer 205, a second driving unit 206, .

The power supply unit 201 may include a primary battery or a secondary battery, and supplies a voltage necessary for operation of the listener 200.

The receiving unit 202 is composed of an RF communication module and receives RF signals transmitted from beacons 100 installed in various types of mobile equipment and dangerous factors highly related to the occurrence of a disaster in a manufacturing site, a hospital, an amusement park, 203.

When the system is initialized, the control unit 203 specifies a clock source, sets a clock speed, sets a core voltage for determining a control voltage, and performs a radio block initialization to set a register for receiving a packet including identifier information , General-purpose input / output (GPIO) initialization that sets the driving of external circuits that can monitor the operation of the transmitter, such as a lamp that outputs an alarm message and a buzzer.

When the RF signal transmitted from the beacon 100 is received through the receiving unit 202, the control unit 203 extracts the packet and checks the CRC. If the CRC is identical, the controller 203 counts the value of the alarm history field, Is detected more than a certain number of times, it is judged that there is a risk factor or a proximity of mobile equipment which is highly related to the occurrence of a disaster.

The control unit 203 periodically checks packets randomly received from a plurality of beacons 100 to output an alarm message or manages an alarm history counter and outputs an alarm message or a message output To run the timer setup.

The controller 203 switches to a sleep mode in a state in which an alarm-related process is not executed, thereby preventing unnecessary power from being consumed.

The timer setup of the control unit 203 may be operated in the same manner as the timer installed in the beacon 100. [

The control unit 203 controls the output of the alert message in a predetermined format when a dangerous element highly related to the occurrence of a disaster or proximity of the mobile equipment is determined.

The first driving unit 204 activates the buzzer 205 according to a control signal applied from the control unit 203 to transmit an alarm as a warning message to inform the operator that a dangerous element or mobile equipment having high relevance to the occurrence of a disaster is in proximity Warns you to quickly evacuate to safe area.

The second driving unit 204 blinks the lamp 207 carried by the operator, the patient of the hospital or the user of the playground or the helmet according to the control signal applied from the controller 203, It should be able to evacuate quickly to safe area by warning of danger or proximity of mobile equipment.

The operation of the present invention including the functions as described above is as follows.

According to the present invention, the beacon 100, which has unique identifier information and is installed in various types of mobile equipment and risk factors highly related to the occurrence of a disaster in a manufacturing site, a hospital, an amusement park, A core voltage for determining a control voltage, a radio block initialization for setting various registers for transmitting a packet including the identifier information, and a lamp, a buzzer, etc. for outputting an alarm message GPIO initialization is set up to set the driving of external circuits capable of monitoring the operation of the transmitter (S101).

Thereafter, when the system initialization is completed, the beacon 100 operates a random backoff timer, and transmits a packet including the identifier information to the RF signal after the counter of the random backoff timer expires (S102).

The beacon 100 determines whether the packet transmission through the RF signal is completed (S103). If the packet transmission is not completed, the beacon 100 returns to step S102 to continue packet transmission including the identifier information.

The beacon 100 sets a random backoff timer when the packet transmission through the RF signal is completed (S104), executes a timer counter for a set time (S105), and when the timer counter expires (S106) And performs packet transmission including the identifier information.

The beacon 100 can transmit a packet including the identifier information in an RF signal up to 255 times per second, and the transmission range of the RF signal can be adjusted to a predetermined radius by adjusting the output voltage.

As described above, in the beacon 100 installed in each of various types of mobile equipment and risk factors highly related to the occurrence of a disaster in a manufacturing site, a hospital, a playground, etc., an RF signal including identifier information at a time interval set at a random back- The listener 200 carrying an operator, a patient, or an amusement park user in a pocket or a helmet or a belt may receive a RF signal transmitted from the beacon 100, It is determined whether or not it is proximate.

The listener 200 designates a clock source in accordance with the system initialization, sets a clock speed, sets a core voltage for determining a control voltage, performs a radio block initialization to set a register for receiving a packet including identifier information And performs GPIO initialization to set driving of external circuits such as a lamp and a buzzer for outputting an alarm message, which can monitor the operation of the transmitter (S201).

When the system initialization is completed, the listener 200 initializes the alarm algorithm (S202) and executes the timer setup (S203).

The timer setup periodically checks packets randomly received at the beacon 100 installed in various types of mobile equipment and risk factors highly related to the occurrence of a disaster at a manufacturing site, a hospital, an amusement park, etc. and outputs an alarm message It manages the alarm history and is set to output an alarm message or stop the output in certain circumstances.

The listener 200 determines whether a packet is received after the timer counter is operated with a fixed delay time (S204). If the packet is received, the CRC is checked (S205) .

When the CRC of the received packet matches, the listener 200 counts the alarm history field value (S207), and determines whether the counter of the alarm history field value is detected as a reference value or more (S208).

If it is determined that the counter of the alarm history field value is less than the reference value, the listener 200 waits for the next packet to be received (S209). If the counter of the alarm history field value is determined to be equal to or greater than the reference value, It is determined that the mobile device is in proximity and an alarm message of the set format is output (S210).

The listener 200 may send an alarm of a predetermined type when a dangerous element highly related to a disaster or proximity of a moving object is determined at a worksite, a hospital, an amusement park, etc., or a lamp mounted on the helmet may be blinked, Warns you to quickly evacuate to safe area.

The listener 200 intermittently outputs an alarm message at a first interval for a predetermined time when the packet transmission is performed at a rate of A times per second when the packet transmission through the RF signal in the beacon 100 is set at a rate of B or more per second, If the alarm message is received more than D times per second, the alarm message is output as a continuous sound for a predetermined time.

For example, when the packet transmission through the RF signal in the beacon 100 is set to 255 times per second, the listener 200 repeats 3 times within 0.5 times per second to 120 times, Message is output at the first interval, and if it is received three times repeatedly within 120 times or more than 124 times per 0.5 second, an intermittent alarm message is outputted at the second interval for 5 seconds, and if it is received 125 times or more per 0.5 second, Outputs an alarm message with a negative tone.

The second spacing means an interval that is denser than the first spacing.

The received packet, the time, the number of repetitions, and the output time of the alarm message can be set according to the work environment and the user's center.

The listener 200 is switched to the sleep mode in a state where the alarm-related process is not executed to prevent unnecessary power consumption.

The alarm message dispatch operation of the listener 200 will be described in detail with reference to FIG.

The listener 200 checks the state of a timer toggle (S302) when the timer counter operated with a fixed delay time expires (S301).

The listener 200 determines that an alarm message is output if the state of the timer toggle is set to '0' in S302. If the reception counter rxCount of the AlertHistory structure index is 1 or more, Index) position is set to 1 (S303).

In the above, the reception counter (rxCount) is 1 or more, which means that at least one packet is received after the timer starts to operate.

Thereafter, the listener 200 calculates the sum of the values of the Alert History structure pages to determine whether the output time of the alarm message has reached the preset time, for example, 5 seconds (S304).

The listener 200 compares the total number of pages calculated in step S304 with the total number of pages in step S305. If the sum of the calculated pages is equal to the total number of pages, the time of the output alarm message is set For example, 5 seconds has elapsed (S306).

In step S307, the listener 200 continuously outputs the alarm message because the page value is 1 if the output time of the alarm message has not passed the predetermined time, for example, 5 seconds, in step S306.

In step S309, the listener 200 stops outputting the alarm message even if the output time of the alarm message is set to a predetermined value, for example, 5 seconds, in step S306.

The listener 200 determines whether rxCount is equal to or greater than 1 (S308) if the sum of the pages calculated in S305 is not equal to the total number of pages.

In step S309, the listener 200 outputs an alarm message if rxCount is equal to or greater than 1 in step S308. If the value of rxCount is equal to or less than 1, the listener 200 stops outputting the alarm message.

When the routine for outputting and stopping the alarm message is completed according to the above procedure, the TimerToggle value is changed to 1 to initialize the page, rxCount of the index (S310).

If the state of the timer toggle is set to '1' in step S302, the listener 200 determines that an initialization task necessary for outputting a warning message is performed and stops outputting the alarm message (S311).

Then, the listener 200 increments the index value of the AlertHistory structure (S312).

In other words, the AlertHistory is a Queue type storage structure that prevents the alarm message from ringing when the alarm message is output for a predetermined time. Therefore, the oldest element is erased and newly initialized to receive a new packet and store the data Execute the task to do.

The listener 200 increments the index value of the AlertHistory structure and initializes the page and rxCount values of the index positions at step S313 and changes the timer toggle to 0 to control the output of the alarm message at the timer expiration (S314).

As described above, it is possible to cause a disaster by radio communication of a beacon installed in various mobile equipment and a listener carried by an operator, a patient, or an amusement park user, at risk of a disaster occurring at a manufacturing site, a hospital or an amusement park It is possible to detect a proximity of a dangerous element in real time and output a set alarm message to prevent occurrence of a disaster in advance, thereby minimizing human and material loss.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood that various modifications and changes may be made without departing from the scope of the appended claims.

100: Beacon 101: Power source
102: control unit 103:
200: Listener 201: Power source
202: Receiving unit 203:
204: first driving unit 205: buzzer
206: second driving part 207: lamp

Claims (10)

A beacon which is installed in a dangerous area and a moving object equipment at a manufacturing site, a hospital, an amusement park, and transmits a packet including the identifier information at an established time interval as an RF signal;
A listener for receiving a packet transmitted as an RF signal from the beacon and outputting an alarm message of a predetermined format when the received packet is detected within a predetermined time as a predetermined number of times or more and determining the proximity of a dangerous area or mobile equipment;
The safety management system comprising: The method according to claim 1,
Wherein the beacon transmits a packet including the identifier information as an RF signal at a preset number of times per second and adjusts a transmission region of the RF signal to a predetermined radius by adjusting an output voltage. The method according to claim 1,
The listener intermittently outputs an alarm message at a first interval for a predetermined time if the packet transmission of the beacon is set to A cycles per second or more and transmits the alarm message for a predetermined time to the first interval The number of times of repetition, the number of times of repetition, and the time of outputting the alarm message are determined according to the working environment and the user's centering Variable safety management system. The method according to claim 1,
Wherein the listener outputs an alarm message to at least one of an alarm transmission through a buzzer or a blinking or vibration occurrence of a lamp mounted on a worker's helmet when a dangerous area or proximity of a mobile equipment is determined. The method according to claim 1,
The beacon includes a power supply unit for supplying operation power;
A controller for controlling transmission of a packet including identifier information and transmitting a packet at predetermined time intervals by a random backoff timer to prevent collision with a packet transmitted in another beacon in the same area;
A transmitter for transmitting a packet including the identifier information provided by the controller as an RF signal;
The safety management system comprising: The method according to claim 1,
Wherein the listener is composed of a primary battery or a secondary battery and supplies power necessary for operation of the listener;
A receiving unit for receiving an RF signal transmitted from a beacon installed in a mobile device and extracting the packet and providing the RF signal to a control unit;
A controller for checking the CRC of the packet provided by the receiver and counting the value of the alarm history field in the case of coincidence to determine whether the mobile device is a risk factor of an industrial accident and outputting an alarm message;
First alarm means for outputting a proximity alarm message of the moving object equipment as an alarm under the control of the control unit;
Second alarm means for outputting a moving object equipment proximity alarm message according to a control of the control unit by blinking a lamp;
The safety management system comprising: The method according to claim 6,
Wherein the control unit switches to a sleep mode if the process related to the output of the alarm message is not executed, thereby preventing power consumption. A beacon installed in a dangerous area and a moving object equipment at a manufacturing site, a hospital, an amusement park carries out a random backoff timer counter, and when the random backoff timer counter terminates, transmitting the RF signal as a packet including identifier information;
A listener carried by the operator, the patient, and the amusement park user receives a packet transmitted as an RF signal from the beacon and counts an alarm history field value;
If the counter of the alarm history field value is equal to or greater than the reference value within a predetermined time, determining that the alarm history field value is close to the dangerous area or the mobile equipment and outputting an alarm message in the set format;
And a method for operating the safety management system. 9. The method of claim 8,
When the transmission of the packet including the identifier information is completed, the beacon re-executes the random backoff timer counter to prevent collision with the packet transmitted in the beacon, and the listener transmits the CRC in the packet including the identifier information transmitted from the beacon And determines whether or not the packet is received. 9. The method of claim 8,
The listener checking a status of a timer toggle;
If the timer toggle is set to '0', it is determined that the alarm message is output; and if the reception counter (rxCount) of the alarm history is 1 or more, setting a page value of the index position to 1;
Calculating a total of pages of the alarm history (AlertHistory) and comparing the total number of pages with each other;
Determining whether the output of the alarm message exceeds the set time if the sum of the calculated pages is equal to the total number of pages;
If the output of the alarm message does not pass the preset time, the page value is 1, so that the output of the alarm message is continuously maintained;
Stopping the output of the alarm message even if the page value of the current index is set to 1 if the output of the alarm message has elapsed;
Determining whether rxCount is equal to or greater than 1 if the sum of the calculated pages is not equal to the total number of pages;
Outputting an alarm message if rxCount is equal to or greater than 1 and stopping outputting an alarm message if rxCount is less than 1,
Changing the TimerToggle value to 1 to initialize the page, rxCount of the index, when the routine of outputting and stopping the alarm message is completed;
If the state of the timer toggle is set to '1', it is determined that the initialization operation necessary for the alarm message output is performed. The page, rxCount value of the index position is initialized and the timer toggle is changed to 0 Process;
And a method for operating the safety management system.

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