KR101018285B1 - Device and method for sharing alarm signal between networks - Google Patents

Abstract

PURPOSE: A risk signal sharing driver using a wireless communication and a sharing method of the risk signal are provided to promote safety of worker in an industrial site. CONSTITUTION: An adjacent network search unit(140) searches a adjacent network for transmitting a risk signal packet. An RF switch network(150) communicates with the adjacent network. A WBAN(Wireless Body Area Network) management unit(160) manages a WBAN consisting of a sensor. If a risk determining unit determines the risk, an alarm generating unit(170) generates an alarm signal. The alarm generating unit transmits alarm(300) to the alarm signal.

Description

Danger signal sharing device and wireless signal sharing method using wireless communication {Device and method for sharing alarm signal between networks}

The present invention relates to a dangerous signal sharing device and a dangerous signal sharing method using wireless communication, and more particularly, a dangerous signal sharing device and a dangerous signal using wireless communication, which can reduce costs in promoting safety of workers in industrial sites. It's about sharing.

Sensor networks are used for environmental monitoring of ground, natural environment, bridges, and buildings. Using the sensor network, simply collect the sensing data from the sensor and transmit it to the sink node. Therefore, it is difficult to achieve the purpose of preventing industrial accidents, such as detecting or predicting safety-related accidents that occur directly on workers in the industrial field by collecting only the sensing data.

Workers' safety issues are the most basic and the most important issues in the industrial field. However, as mentioned above, data sensing in the industrial field is focused on the sensor network only, and the human area, that is, the body area network, is concentrated on the medical / health field and entertainment business, not the safety field of the industrial site. .

Therefore, in order to ensure the safety of workers in such industrial sites, there is a demand for development of a technology for detecting risks and sharing them at low cost.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a danger signal sharing apparatus and a danger signal sharing method using wireless communication that can reduce the cost in promoting the safety of workers in the industrial field.

According to an aspect of the present invention, an apparatus for sharing a danger signal using wireless communication includes: a sensing data collector configured to collect sensing data from a sensor; A risk determination unit determining whether a risk is based on the sensing data; A risk signal transmitter configured to generate and transmit a danger signal packet when a risk is determined from the risk determiner; A neighbor network search unit for searching an adjacent network for transmitting the generated dangerous signal packet; An RF switch agent for communicating with a neighbor network; WBAN management unit for managing a WBAN composed of a sensor; And an alarm generation unit configured to generate an alarm and transmit a danger signal to the alarm when a danger is determined from the danger determination unit.

The sensor may be attached to at least one of safety equipment, such as a hard hat, a safety joke, a safety belt, safety gloves and safety shoes.

The alarm may be at least one of a vibration alarm, an audio alarm, and an illumination alarm.

According to another aspect of the invention, the sensing data collection step of collecting the sensing data from the sensor; The risk determination step of determining whether or not the risk based on the sensing data; and if it is determined that the risk signal transmission step of transmitting a risk signal packet to the adjacent network; there is provided a risk signal sharing method using wireless communication.

The dangerous signal transmission step may be performed by broadcasting a dangerous signal packet.

Here, the method may further include broadcasting a neighbor discovery packet for searching for an adjacent network before transmitting the dangerous signal packet. The neighboring network through which the dangerous signal packet is transmitted is preferably a network that transmits an ACK packet corresponding to the neighbor discovery packet.

In addition, the neighboring network receiving the dangerous signal packet may further include rebroadcasting the dangerous signal packet. Rebroadcasting includes: checking a source address and a TTL of a dangerous signal packet by an adjacent network receiving the dangerous signal packet; If the source address is not the address of the neighbor network and the TTL is not 0, broadcasting the dangerous signal packet;

On the other hand, if the source address is the address of the neighbor network or the TTL is 0, the dangerous signal packet is discarded.

According to the present invention, a sensor and a wireless communication module are mounted on a protective device worn by workers in an industrial site, and intelligent and instantaneous dangers are detected using sensing data to predict safety accidents of workers and prevent them. In addition, more effective alarms are possible by broadcasting information on whether the risk is detected directly without a separate notification device in order to notify fellow workers around the detected risk.

In addition, the concept of a shared network was introduced to reduce costs by allowing alarms to be shared between different WBANs using different RF bands with a single RF communication module. It has the effect of expanding.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, embodiments of the present invention may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art.

1 is a functional block diagram of a danger signal sharing apparatus using wireless communication according to an embodiment of the present invention. In FIG. 1, not only the danger signal sharing device 100 but also the sensor 200, an alarm 300, and an RF transceiver 400 connected to the danger signal sharing device 100 are illustrated for convenience of description.

Danger signal sharing apparatus 100 using a wireless communication according to an embodiment of the present invention includes a sensing data collection unit 110 for collecting the sensing data from the sensor 200; A risk determination unit 120 determining whether a risk is based on the sensing data; If the risk is determined from the risk determination unit 120, the risk signal transmission unit 130 for generating and transmitting a danger signal packet; A neighbor network search unit 140 for searching for an adjacent network for transmitting the generated dangerous signal packet; An RF switch agent 150 for communicating with a neighbor network; WBAN management unit 160 for managing the WBAN composed of a sensor 200; And an alarm generation unit 170 generating an alarm signal and transmitting a danger signal to the alarm when the danger is determined from the danger determination unit 120.

The sensing data collection unit 110 collects sensing data from the sensor 200 including the first sensors 200_1 to the N-th sensor 200_N. The sensor 200 may be any sensor as long as it can detect a pressure sensor, a temperature sensor, a humidity sensor, or other hazards of an industrial site. For example, when the worker enters the closed space, the danger signal sharing device 100 is located in the closed space. At this time, assuming that the first sensor 200_1 is a pressure sensor, the first sensor 200_1 detects the pressure in the space and transmits the pressure data to the sensing data collection unit 110. In addition, when the danger signal sharing device 100 is located on the building roof, assuming that the first sensor 200_1 is a temperature sensor, the dangerous data sharing device 100 transmits the temperature data to the sensing data collection unit 110. The sensing data collection unit 110 collects sensing data received from at least one sensor and transfers the sensing data to the risk determination unit 120.

The risk determination unit 120 determines whether the risk is based on the sensing data transmitted to the sensing data collection unit 110. The determination of risk is performed based on preset values and collected sensing data. For example, the risk determination unit 120 may determine whether there is a risk by comparing the preset data with the sensing data received from the sensing data collection unit 110.

As described above, when the dangerous signal sharing device 100 is located in an enclosed space, when the detected pressure value exceeds a predetermined pressure value, the danger determination unit 120 may determine that the current state is dangerous. Alternatively, even when the detected pressure value is less than the predetermined pressure value, if the pressure is oxygen pressure, the risk determination unit 120 may determine that the current state is dangerous. In such a case, if the worker's colleagues working together in the same confined space are not informed of the result of the judgment, the pressure in the confined space may be too high or the oxygen pressure may be too low, resulting in a safety accident for all workers.

Alternatively, when the worker is working on the roof of the building, when the temperature data is received from the temperature sensor, the risk determination unit 120 may determine whether there is a risk compared to the preset temperature. Since the building roof is impossible to cool and it is difficult to block direct sunlight, it can be judged as dangerous because the worker is exposed to the risk of heat stroke when the temperature of the building surface is detected and above a predetermined temperature.

If it is determined that the risk determination unit 120 is dangerous, the risk signal is transmitted to the danger signal transmission unit 130. The hazard signal transmitter 130 generates a hazard signal packet based on the hazard signal received from the hazard determination unit 120 and transmits the hazard signal packet to a neighboring network, that is, a neighboring network.

The dangerous signal transmitter 130 transmits the generated dangerous signal packet to a neighboring network. In order to set a network to be transmitted, the neighboring network searching unit 140 searches for a neighboring network. That is, when a worker having a corresponding danger signal sharing device 100 is in danger, a neighbor's network is searched to inform other worker colleagues of the danger. In order to discover the neighboring network, communication is performed using the RF switch agent 150.

Danger signal sharing apparatus 100 includes a WBAN management unit 160 for managing a WBAN composed of its own safety sensor 200.

If there is a determination result from the risk determination unit 120, the dangerous signal transmission unit 130 transmits to the alarm generation unit 170 while transmitting to the adjacent network to generate an alarm signal. The alarm generator 170 generates an alarm signal and transmits the generated alarm signal to the alarm 300 including the first alarm 300_1 to the N-th alarm 300_N to display the alarm signal to the outside. The alarm 300 may be a vibration alarm, an audio alarm, or an illumination alarm.

Therefore, when the alarm generation unit 170 receives the danger signal, the alarm generation unit generates an alarm signal and transmits the alarm signal to the alarm 300. Accordingly, the alarms generate vibrations, an alarm bell sounds, or an LED is turned on. Can be informed.

Figure 2 is a flow chart provided in the description of the danger signal sharing method using wireless communication according to an embodiment of the present invention, Figure 3 provides a description of the danger signal sharing method using wireless communication according to an embodiment of the present invention. It is a drawing. According to the present invention, the sensing data collection step of collecting the sensing data from the sensor; The risk determination step of determining whether or not the risk based on the sensing data; and if it is determined that the risk signal transmission step of transmitting a risk signal packet to the adjacent network; there is provided a risk signal sharing method using wireless communication. Hereinafter, a description will be given with reference to FIGS. 2 and 3.

2, there is shown a flow chart for explaining the risk signal sharing method in WBAN1, WBAN2, and WBAN3. WBAN1, WBAN2, and WBAN3 all represent WBANs individually configured by respective industrial workers, which will be described below with reference to FIG.

First, the sensing data is transferred from the sensor node of WBAN1 of worker 1 to the sink node of WBAN1 (S501). At this time, packet type 1 indicating the normal sensing type is set and transmitted. In the sink node of the WBAN1, it is determined whether the risk is based on the sensing data (S502). In other words, the risk is detected by inferring the situation using the received sensing data. WBAN2 works in a similar way to WBAN1.

If it is determined that the sink node of the WBAN1 is dangerous (S503), the dangerous signal packet set to packet type 2, which is a dangerous packet type, is transmitted to the neighbor network. However, before searching for the neighboring network, the neighbor discovery packet is broadcasted through the RF channel reserved for the shared network (S504). At this time, when the WBAN2 receives the neighbor discovery packet and transmits an ACK (S505), the WBAN1 broadcasts the danger signal packet to the shared network (S506).

Upon receiving the dangerous signal packet, WBAN2 checks the packet source address and the TTL. If the packet source address is not its own and the TTL is not 0, the WBAN2 also broadcasts (relays) this packet and decreases the TTL by one. (S507). If the packet source address is the same as its own or the TTL is 0, the dangerous signal packet is ignored (S509).

When sensing data is acquired from the sensor node of WBAN2, the same process is performed as in WBAN1. That is, the sensing data acquired from the sensor node of the WBAN2 is transferred to the sink node of the WBAN2 (S601), and the sensing data of the WBAN2 is used to determine the risk (S602).

The process after determining whether the risk is performed is the same as that of the sink node of WBAN1, and the risks detected in each WBAN are transmitted to all networks. Referring to FIG. 3, worker 1 constructs a network of WBAN1 701, worker 2 forms WBAN2 702, worker 3 forms WBAN3 703, and worker 4 forms WBAN4 704. Each worker has their own sensors on their helmets (S1, S6), safety gloves (S2, S3, S7, S8), safety belts (B1, B2, B3), and safety shoes (S4, S5, S9, S10). Doing. WBAN1 uses RF channel 1, WBAN2 uses RF channel 2, WBAN3 uses RF channel 4, WBAN4 uses RF channel 5, and RF is used for each shared network of WBAN, such as WBAN1 and WBAN2. Channel 3 is assigned and used. Through this, it communicates with the WBAN and different WBANs using different RF bands simultaneously through a single RF to share a danger signal.

The invention is not to be limited by the foregoing embodiments and the accompanying drawings, but should be construed by the appended claims. In addition, it will be apparent to those skilled in the art that various forms of substitution, modification, and alteration are possible without departing from the technical spirit of the present invention described in the claims with respect to the present invention.

1 is a functional block diagram of a danger signal sharing apparatus using wireless communication according to an embodiment of the present invention.

2 is a flowchart provided to explain a risk signal sharing method using wireless communication according to an embodiment of the present invention.

3 is a view provided to explain the risk signal sharing method using wireless communication according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

100 Danger Signal Sharing Device 110 Sensing Data Collection Unit

120 Danger Judgment 130 Danger Signal Transmitter

140 Neighboring network search unit 150 RF switch agent

160 WBAN management unit 170 Alarm generation unit

200 sensor 200_1 first sensor

200-N N-sensor 300 alarm

300_1 First alarm 300_N Nth alarm

400 RF Transceiver

Claims (11)

Sensing data collection unit for collecting the sensing data from the sensor; A risk determination unit determining whether a risk is based on the sensing data; A risk signal transmitter configured to generate and transmit a danger signal packet when a risk is determined from the risk determiner; A neighbor network search unit for searching an adjacent network for transmitting the generated dangerous signal packet; An RF switch agent for communicating with the neighbor network; WBAN management unit for managing the WBAN composed of the sensor; And And an alarm generator configured to generate an alarm signal and transmit a danger signal to the alarm when the danger is determined from the danger determination unit. The method of claim 1, The sensor is a danger signal sharing device using a wireless communication, characterized in that attached to at least one of the safety equipment, safety helmet, safety belt, safety gloves and safety shoes. The method of claim 1, The alarm is at least one of a vibration alarm, an audio alarm, and an illumination alarm dangerous signal sharing apparatus using a wireless communication. Sensing data collection step of collecting sensing data from a sensor; A risk determination step of determining whether a risk is based on the sensing data; If it is determined that the risk, dangerous signal sharing method using a wireless communication comprising; transmitting a dangerous signal packet to a neighboring network. The method of claim 4, wherein The dangerous signal transmission step, broadcasting the dangerous signal packet; dangerous signal sharing method using a wireless communication, characterized in that the. The method of claim 4, wherein And broadcasting a neighbor discovery packet for searching for a neighboring network before transmitting the dangerous signal packet. The method of claim 6, The neighboring network through which the dangerous signal packet is transmitted is a dangerous signal sharing method using wireless communication, characterized in that a network transmitting an ACK packet corresponding to the neighbor search packet. The method of claim 4, wherein And rebroadcasting the dangerous signal packet to the neighboring network that has received the dangerous signal packet. The method of claim 8, The rebroadcasting step, Checking, by the adjacent network receiving the dangerous signal packet, a source address and a TTL of the dangerous signal packet; Broadcasting the dangerous signal packet when the source address is not the address of the neighboring network and the TTL is not zero; and sharing the dangerous signal packet. The method of claim 9, And when the source address is the address of the neighbor network, discarding the dangerous signal packet. The method of claim 9, If the TTL is 0, dangerous signal sharing method using a wireless communication, characterized in that for discarding (discard) the dangerous signal packet.

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