KR101986516B1 - Hydrant having alarm function and method for alarming of hydrant - Google Patents

Abstract

The present invention relates to a fire hydrant and to a method for alarming a fire hydrant. More specifically, provided are a fire hydrant providing an alarm based on a result of sensing a peripheral object and a method for alarming the fire hydrant. According to one embodiment of the present invention, the fire hydrant having an alarm function comprises: a sensing unit having a control panel outside and sensing an object in a prohibited area around the fire hydrant; a control unit determining whether an object exists in the prohibited area based on the sensing result of the sensing unit; and an alarm unit providing an alarm based on the determination result of the control unit.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a fire hydrant alarm system having an alarm function,

FIELD OF THE INVENTION The present invention relates to a fire hydrant and a fire hydrant warning method, and more particularly, to a fire hydrant and a fire hydrant warning method that provide an alarm based on a result of sensing a surrounding object.

The fire hydrant is a water source that pressurizes the fire by using the high pressure water pressure when the fire is out. The connecting water supply port outside the building is the entrance to the fire department water tank car which pressurizes the water and connects water to the sprinkler or water pipe installed in the building. These outdoor fire hydrants and connecting waterways must be operated close to the fire station vehicles. In general, parking stops are frequent in ordinary vehicles. In the case of indoor fire hydrants, there are also frequent occurrences of items, so that it takes time to clean them in case of fire or emergency. It is a reality that the loss of the golden type and the damage of life and property are increased rapidly. Hereinafter, for convenience of explanation, the outdoor fire hydrant, the connecting water inlet, and the indoor fire hydrant are collectively referred to as a 'fire hydrant'.

1. Korea public utility model 2019970008182 (Publication date: March 27, 1997) 2. Korea registered utility model 2002788710000 (Notice day: 2002.06.21)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a fire hydrant that alerts when there is an object in the vicinity of the fire hydrant and an alarm method for the fire hydrant.

It is another object of the present invention to provide a fire hydrant which alerts when a parking event occurs in the vicinity of a fire hydrant and an alarm method of the fire hydrant.

A fire hydrant having an alarm function according to a preferred embodiment of the present invention is provided with a control panel on its outer side, and the control panel includes a sensing unit for sensing an object in a prohibited area around a fire hydrant; A control unit for determining presence or absence of an object in the forbidden zone based on the sensing result of the sensing unit; And an alarm unit for providing an alarm based on the determination result of the control unit.

Here, the sensing unit may include a main board bent toward the forbidden area; And a first sensor, a second sensor, and a third sensor provided on the main board, wherein the first sensor is located at one side of the second sensor, and the third sensor is located at the other side of the second sensor.

The main board may have a shape of an arc, and the second sensor may be installed at a position which is the center of the arc.

The control unit may determine whether or not the vehicle has entered the forbidden zone using the sensed values of the first sensor and the second sensor, and determine whether the vehicle advances out of the forbidden zone using the third sensor .

In addition, the first sensor, the second sensor, and the third sensor may be spaced at equal intervals.

In addition, the alarm unit may provide a primary alarm in response to the control unit determining that the state in which the new vehicle enters the prohibited zone is maintained for the first reference time.

In addition, the primary alarm may be configured to repeatedly light a warning lamp.

In addition, the controller may determine whether there is a vehicle movement event in the forbidden zone for a second reference time before the new vehicle enters the forbidden zone after the first alarm is made, Is not present in the forbidden zone, the alarm unit may provide a secondary alarm.

In addition, the second reference time may be a preset time at which the traffic lights cycle one cycle at an intersection.

In addition, the secondary alarm may be a warning broadcast through a speaker.

The apparatus may further include a photographing unit that photographs the image of the forbidden zone.

In addition, the photographing section can photograph the image of the forbidden zone in response to the secondary alarm.

The photographing unit may photograph the forbidden zone image and provide it to a fire control sensor or a traffic control center through a communication network.

In addition, the first sensor, the second sensor, and the third sensor may be ultrasonic sensors.

In addition, the first sensor, the second sensor, and the third sensor may have a predetermined sensing distance.

In addition, the second sensor monitors only one lane located in front of the fire hydrant, and the sensing distance of the second sensor may be a lane width of the lane.

The distance between the first sensor and the first side boundary of the forbidden zone may be a sensing distance, and the distance from the third sensor to the second side boundary of the other side of the forbidden zone may be a sensing distance.

Further, the sensor unit may include a reflection surface; And an ultrasonic transceiver that emits ultrasonic waves toward the reflection surface and receives ultrasonic waves reflected through the reflection surface.

In addition, the ultrasonic transceiver may be a single ultrasonic transceiver.

Further, the reflecting surface may be in the form of a parabolical convex mirror.

The reflecting surface may have an arc shape having a predetermined radius and may include an upper reflecting surface extending upward from the center of the arc, And a lower reflecting surface extending downward from the center of the arc.

Further, the upper reflection surface and the lower reflection surface may be bent toward the ultrasonic transceiver side.

The upper reflection surface and the lower reflection surface reflect while converging the ultrasonic waves coming from the ultrasonic transceiver toward the center, and the upper reflection surface and the lower reflection surface converge the ultrasonic waves reflected from the object toward the center, .

Also, the forbidden zone may be a zone having a radius of 180 degrees with respect to the center of the reflecting surface.

The control unit may determine whether or not a new object has entered the forbidden zone, and the alarm unit may provide a primary alert corresponding to the determination that the entry state of the new object is maintained for the third reference time .

In addition, the alarm unit may provide a secondary alarm when the state in which a new object has entered during the fourth reference time after the primary alarm is maintained.

According to another aspect of the present invention, there is provided a fire hydrant warning method comprising the steps of: sensing an object in a prohibited area around a fire hydrant; Determining a presence or absence of an object in the forbidden zone based on the sensing result of the sensing unit; And an alarm unit providing an alarm based on the determination result of the control unit.

If it is determined that the new vehicle has entered the forbidden zone, the controller determines whether the vehicle enters the first reference time period, and maintains the state in which the vehicle has entered during the first reference time period The alarm unit can provide the first alarm.

If the first alarm is provided, the control unit determines whether or not there is a vehicle movement event in the prohibited zone during the second reference time before the new entry vehicle enters the prohibited zone, If it is determined that there is no vehicle movement event in the zone, the alert unit may provide a secondary alert.

Also, if it is determined that there is a vehicle movement event in the forbidden zone during the second reference time, the primary alarm can be canceled.

In addition, the second reference time may be a preset time at which the traffic lights cycle one cycle at an intersection.

According to the present invention, when there is an object in the vicinity of the hydrants, an alarm is given to prevent a situation where the hydrants can not be supplied from the hydrants in an emergency.

1 shows an example of a conventional fire hydrant.
2 shows a fire hydrant according to a preferred embodiment of the present invention.
Figure 3 shows a functional block diagram of the control panel of Figure 1;
Fig. 4 shows the structure of the sensing unit of Fig.
Fig. 5 shows an example of the output waveform of the sensing portion of Fig.
FIG. 6 shows a flowchart of a fire hydrant warning method according to a preferred embodiment of the present invention.
7 is a functional block diagram of a control panel according to another embodiment of the present invention.
8 is a view for explaining the operation characteristics of the ultrasonic sensor.
FIG. 9 is a view for explaining the principle of operation of the sensor unit of FIG. 7. FIG.
10 shows the detailed structure of the sensor unit of FIG.
11 is a flowchart of a fire hydrant alarm method according to another embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Like reference numerals are used for like elements in describing each drawing. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, .

On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention.

The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, a fire hydrant according to a preferred embodiment of the present invention will be described with reference to FIGS. 1 shows an example of a conventional fire hydrant. 2 shows a fire hydrant according to a preferred embodiment of the present invention. Figure 3 shows a functional block diagram of the control panel of Figure 1; Fig. 4 shows the structure of the sensing unit of Fig. Fig. 5 shows an example of the output waveform of the sensing portion of Fig.

1 shows an example of a conventional fire hydrant. Figure 1 illustrates an outdoor fire hydrant. 2, a solar cell 200 and a control panel 100 may be installed outside the outdoor fire hydrant 1. FIG. 2 is merely an example, and the solar cell 200 and the control panel 100 of the present invention may be installed before indoor fire extinguishing. In this case, the solar cell 200 may be omitted.

3, the control panel 100 may include a power source unit 110, a sensing unit 120, a control unit 130, an alarm unit 140, a photographing unit 150, and a communication unit 160.

The power supply unit 110 can supply power necessary for operation of the control panel 100. The power supply unit 110 may supply the power generated by the solar cell 200 to the control panel 100 and may convert the commercial AC power to DC and supply the DC power to the control panel 200.

The sensing unit 120 may sense whether an object exists in the forbidden zone D1. The prohibited zone (D1) may refer to a predetermined zone based on the hydrant. (For example, within 5 m) from the hydrant 1 and may be a space having a predetermined length and width forward with respect to the hydrant 1.

Referring to FIG. 4, the sensing unit 120 may be installed in the prohibited area D1 ahead of the fire hydrant 1 on the hydrant 1 side to detect the accumulation or illegal parking of the object.

The sensing unit 120 may include a main board 121 bent toward the forbidden zone D1 and three sensors S1, S2 and S3 provided on the main board 121. [ Hereinafter, S1 is referred to as a first sensor, S2 is referred to as a second sensor, and S3 is referred to as a third sensor. The first sensor S1 and the second sensor S3 may be installed at equal intervals on both sides of the second sensor S2. The main board 121 may have the shape of an arc, and the second sensor may be installed at a position which is the center of the arc.

The second sensor S2 can detect an object in front by transmitting the ultrasonic wave forward by the ultrasonic sensor and receiving the ultrasonic wave reflected from the front and using the difference of the size and the wavelength of the ultrasonic wave transmitted and received. At this time, the sensing distance can be varied by adjusting the output level and varying the timing of receiving ultrasonic waves after ultrasonic transmission. FIG. 4 is an example of a fire hydrant installed on the road side. In this case, the sensing distance of the second sensor S2 may be set to a lane width (for example, 3 m) to monitor only one lane located in front of the fire hydrant. According to Article 33 (3) of the current Road Traffic Act, parking is not permitted within 5 meters from the fire hydrant. Therefore, the forbidden zone D1 may be set so as to monitor the parking prohibited area according to the above-mentioned Article 33 (3) of the Road Traffic Act.

The first sensor S1 may be installed in the first side region of the main board 121 which is bent on the basis of the region where the second sensor S2 is located.

The first sensor S1 transmits ultrasound waves forward by the ultrasonic sensor and receives ultrasound waves reflected from the front side, and can detect objects existing in front of the object using differences in the size and wavelength of the ultrasonic waves. At this time, the sensing distance can be varied by adjusting the output level and varying the timing of receiving ultrasonic waves after ultrasonic transmission. In FIG. 4, the prohibited zone D1 may be a space having a predetermined length and width forward with respect to the hydrant 1. In FIG. 4, the prohibited zone D1 means a space of 5 m on both sides of the fire hydrant and 3 m forward, that is, 10 m wide and 3 m high. The first sensor S1 is arranged such that the distance from the hydrant 1 to the first side border line L1 of the prohibited area D1 (the left border line in FIG. 4) in the direction in which the first sensor S1 faces is a sensing distance Can be set.

The third sensor S3 may be installed on the main board 121 in a second side region opposite to the first side region. The third sensor (S3) transmits ultrasonic waves toward the front by the ultrasonic sensor and receives ultrasonic waves reflected from the front side, and can detect an object presence or absence in front of the object by using differences in the transmission and reception degrees such as the size and wavelength of the ultrasonic waves. At this time, the sensing distance can be varied by adjusting the output level and varying the timing of receiving ultrasonic waves after ultrasonic transmission. In FIG. 4, the prohibited zone D1 may be a space having a predetermined length and width forward with respect to the hydrant 1. In FIG. 4, the prohibited zone D1 means a space of 5 m on both sides of the fire hydrant and 3 m forward, that is, 10 m wide and 3 m high. The third sensor S3 is controlled so that the distance from the hydrant 1 to the second side boundary line L2 of the prohibited area D1 (the right side boundary line in Fig. 4) in the direction in which the third sensor S3 faces is a sensing distance Can be set.

In Figure 4, the running direction of the vehicle may be the first direction. When the sensing unit 120 is installed as shown in FIG. 4, the first sensor S1 can detect that the vehicle has entered the prohibited zone D1 through the first path P1. Alternatively, through the second sensor S2, it is possible to detect that the vehicle has entered the prohibited zone D1 via the second path P2. Then, it can be detected through the third sensor S3 that the vehicle has moved out of the prohibited zone D1.

The controller 130 may determine that the vehicle has entered the forbidden zone D1 if it is detected that the sensed value of the first sensor S1 or the second sensor S2 exceeds the first threshold TH1. Here, the first threshold value may be a value obtained by adding a predetermined value to an initial value (a value sensed when the control panel 200 is installed, that is, when there is no object in the vicinity). If the sensing value of the third sensor S3 is lower than the first threshold value after the sensing value of the third sensor S3 exceeds the first threshold value, the control unit 130 may determine that the vehicle has advanced out of the forbidden zone D1 . For example, when the vehicle is continuously traveling in the first direction, the sensing value profile of the first sensor S1, the second sensor S2, and the third sensor S3 may be as shown in Fig. The alarm unit 140 is responsive to the control unit 130 determining that the vehicle has entered the prohibited zone D1 and has not entered the prohibited zone D1 for a first reference time (for example, 10 seconds) It is possible to call attention so that the driver does not park in the prohibited area D1 by making the primary alarm (the warning light (not shown) repeatedly turned on).

However, a vehicle entering the forbidden zone D1 due to a rickety phenomenon of a vehicle or a traffic light at an intersection may fail to advance outside the prohibited zone D1. In such a case, warning of a parking violation in the vicinity of a fire hydrant may interfere with the driver's operation and cause complaints due to frequent alarms.

The control unit 130 determines whether or not the vehicle 1 is in the prohibited zone D1 for a predetermined period of time (for example, 1 minute and 30 seconds) It is determined whether there is a movement event. At this time, after the vehicle enters the prohibited zone (D1) during the second reference time, it is determined whether there is a history of the vehicle entering the prohibited zone (D1) It is possible to determine the vehicle movement event portion during the second reference time. At this time, in response to the control unit 130 determining that there is no vehicle movement event during the second reference time, the alarm unit 140 performs a secondary alarm (parking prohibition warning broadcast) The video can be photographed and provided to the fire control center or the traffic control center. The communication unit 160 can provide a communication function between the hydrant 1 and the outside. At this time, the communication network may be a Lora network or a mobile communication network.

The first sensor S1, the second sensor S2, and the third sensor S3 are used to detect whether the sensor unit 120 of FIG. 4 is in a prohibited area It can be used to monitor the presence of objects in the 180 degree range. At this time, based on the change in the sensing value of the sensor unit 120, the control unit 130 can determine whether or not the object is loaded in the forbidden zone. For example, if it is determined that the sensed value of at least one of the first sensor S1, the second sensor S2, and the third sensor S3 exceeds the first reference value, . However, since the sensed value of at least one of the first sensor S1, the second sensor S2, and the third sensor S3 may exceed the first reference value in the process of moving the object, When an event exceeding the first reference value exceeds the first reference time, it can be determined that the object is loaded in front of the fire hydrant. The alarm unit 140 may provide an alarm in a visual or auditory sense in response to the control unit 130 determining that an object has been loaded in front of the fire hydrant. The photographing unit 150 photographs the fire hydrant near the fire hydrant and provides it to the fire control sensor or the traffic control center in response to the control unit 130 judging that the object is in the vicinity of the fire hydrant. The control panel 100 can be applied to various fire hydrants with different configurations of the control unit 130, the alarm unit 140 and the photographing unit 150 while the structure of the sensing unit 120 is the same.

Hereinafter, a fire hydrant warning method according to a preferred embodiment of the present invention will be described with reference to FIGS. 1 to 6 attached hereto. FIG. 6 shows a flowchart of a fire hydrant warning method according to a preferred embodiment of the present invention. The configuration of Fig. 3 can be made more clear by the following description.

Referring to FIG. 6, the controller 130 may receive a sensing value from the sensor unit 120 at a predetermined period in real time (S61). The control unit 130 may receive the sensed values of the first sensor S1, the second sensor S2, and the third sensor S3.

The control unit 130 can determine whether a new vehicle has entered the prohibited zone D1 using the received sensing value (S62). At this time, if it is detected that the sensing value of the first sensor S1 or the second sensor S2 exceeds the first threshold TH1, the control unit 130 may determine that the vehicle has entered the prohibited zone D1 .

If it is determined in S62 that the vehicle has entered the prohibited zone D1, the controller 130 may determine whether the entered vehicle has entered the prohibited zone D1 during the first reference time (S63). If the sensing value of the third sensor S3 exceeds the first threshold value and the sensing value of the third sensor S3 is less than the first threshold value, the control unit 130 may determine that the vehicle has entered the prohibited zone D1 .

If it is determined in S63 that the vehicle has not advanced outside the prohibited zone D1 during the first reference time period, the alarm unit 140 can be activated by the first alarm (S64). ≪ / RTI >

After the first alarm is generated, the controller 130 may determine whether there is a vehicle movement event in the forbidden zone for a second reference time before the new vehicle enters the prohibited zone D1 (S65). If it is determined in S65 that there is a vehicle movement event in the prohibited zone during the second reference time before the new vehicle enters the prohibited zone D1, the alarm unit 140 cancels the primary alarm (S66), and returns to S62 .

Alternatively, if it is determined in S65 that there is no vehicle movement event in the forbidden zone during the second reference time before the new vehicle enters into the forbidden zone D1, the alarm unit 140 receives a secondary alarm (via a speaker Warning broadcast), and the photographing unit 150 may photograph an image of the vicinity of the fire hydrant (prohibited area) and provide it to the fire control center or the traffic control center (S67).

Then, the control unit 130 can determine whether the alarm has been released (S68). At this time, when the controller 130 detects that the new entry vehicle has advanced outside the prohibited zone D1 (in other words, when the sensed value of the third sensor S3 exceeds the first threshold value, The alarm value can be released (S69). After the alarm is canceled in S69, the control unit 130 can return to S62.

Hereinafter, a fire hydrant according to another embodiment of the present invention will be described with reference to FIGS. 7 is a functional block diagram of a control panel according to another embodiment of the present invention. 8 is a view for explaining the operation characteristics of the ultrasonic sensor. FIG. 9 is a view for explaining the principle of operation of the sensor unit of FIG. 7. FIG. 10 shows the detailed structure of the sensor unit of FIG.

As in the previous embodiment, the control panel of FIG. 7 can be installed not only in the outdoor fire hydrant but also in the indoor fire extinguisher.

7, the control panel 100a may include a power supply unit 110a, a sensing unit 120a, a control unit 130a, an alarm unit 140a, a photographing unit 150a, and a communication unit 160a.

The power supply unit 110a can supply power required for the operation of the control panel 100a. The power supply unit 110a can supply the power generated from the solar cell 200 (FIG. 1) to the control panel 100a, and can convert the commercial AC power to DC and supply the power to the control panel 100a.

The sensing unit 120a can detect whether or not an object exists in the prohibited area (D2 in FIG. 9). A prohibited area may refer to a predetermined area based on the hydrant. May be a predetermined radius (for example, within 5 m) from the fire hydrant, or may be a space having a predetermined length and width forward based on the fire hydrant (1 in Fig. 1).

Referring to FIG. 8, in the far field, the ultrasonic sensor can not detect a detection angle reaching 180 degrees by one sensor within a detection angle of 10 degrees. Therefore, as shown in FIG. 4, a plurality of sensors must be used to have a large detection angle. In this case, the cost is increased and it is difficult to secure the electric power according to the operation of the plurality of sensors. Since the detection angle is about 30 degrees even in the near field, a plurality of ultrasonic sensors are required to detect the azimuth angle of 180 degrees. Accordingly, the present invention proposes a sensor unit capable of forming a 180-degree detection angle with respect to the front of a fire hydrant using a single sensor.

Referring to FIG. 9, the sensor unit 120a may include an ultrasonic transceiver 121a and a reflection surface 122a. The reflection surface 122a may be a parabolic convex mirror shape and the ultrasonic transceiver 121a may be positioned at a position corresponding to the focal point of the reflection surface 122a. The reflecting surface 122a may be an arc shape having a constant radius (R). The reflecting surface 122a is a parabolical convex mirror protruding toward the ultrasonic transceiver 121a and is formed in a shape of a parabolical convex mirror so that the ultrasonic wave radiated by the ultrasonic transceiver 121a is transmitted from the center O to the side The ultrasonic waves can be reflected. Then, the reflection of the ultrasound waves reflected from the object to the side can be reflected back to the ultrasound transceiver 121a side. Thereby, the detection angle of the single ultrasonic transceiver 121a can be 180 degrees. Here, the detection radius r can be controlled by controlling the output level and the sampling timing of the ultrasonic transceiver.

10, the reflecting surface 122a has a center line OL directed to the ultrasonic transceiver 121a at the center O of the arc in a circular arc with a constant radius, an upper reflecting surface US extending upward from the center line, And a lower reflecting surface DS extending downward from the center line. The upper reflecting surface US may be bent toward the ultrasonic transceiver 121a and the lower reflecting surface DS may be bent toward the ultrasonic transceiver 121a.

The upper reflecting surface US bent toward the lower side and the lower reflecting surface DS bent toward the upper side are arranged in a plane which connects the ultrasonic wave transmitted from the ultrasonic transceiver 121a with the center line OL and the ultrasonic transceiver 121a It is possible to reflect the light while converging toward the side. The ultrasonic waves reflected from the object can be reflected while converging toward the plane (not shown) connecting the center line OL and the ultrasonic transceiver 121a. In other words, the upper reflecting surface US bent toward the lower portion and the lower reflecting surface DS bent toward the upper portion are formed by vertically reflecting the ultrasonic waves radiated from the ultrasonic transceiver 121a or reflected from the object, Axis (z-axis in Fig. 10). The circular arc shape protruding toward the ultrasonic transceiver 121a allows the ultrasonic waves to be radiated to both sides with respect to the center O of the arc and converges the ultrasonic waves reflected from the object toward the center of the arc, .

According to the above structure, even when a single ultrasonic sensor is used, the azimuth angle to be detected can be extended to 180 degrees and the reception sensitivity can be sufficiently maintained.

That is, by adopting the above-described reflection surface structure, the three ultrasonic sensors in Fig. 4 can be replaced by a single ultrasonic sensor.

The controller 130a may determine that a new object has entered the prohibited area D2 when it is detected that the sensing value of the sensing unit 120a exceeds the second threshold value TH2. Here, the second threshold value may be a value obtained by adding a predetermined value to an initial value (a value sensed when the control panel 200a is installed, that is, when there is no object in the vicinity). Herein, the forbidden area D2 is defined by the center O of the reflecting surface 122a and the line passing through the ultrasonic transceiver 121a and the intersection of the lines connecting both ends of the reflecting surface, Lt; / RTI > The forbidden zone D2 may have arcs corresponding to 90 degrees on both sides with respect to the line connecting the center of the ultrasonic transceiver 121a and the reflection surface 122a.

The alarm unit 140a determines that the new object has entered the prohibited zone and determines that the entry state is maintained for the third reference time (for example, 10 seconds) Repeated lighting) can be performed.

Then, the alarm unit 140a can issue a warning broadcast in response to the determination that the state in which the new object has entered from the time point of the primary alarm is maintained for the fourth reference time (for example, one minute) The photographing unit 150a can photograph the vicinity fire hydrant and provide it to a fire control center or a traffic control center. Alternatively, if it is judged that it is not maintained for the fourth reference time, the alarm section 140a can release the first alarm.

The communication unit 160a can provide a communication function between the fire hydrant and the outside. At this time, the communication network may be a Lora network or a mobile communication network.

Hereinafter, a fire hydrant warning method according to a preferred embodiment of the present invention will be described with reference to FIGS. 11 is a flowchart of a fire hydrant alarm method according to another embodiment of the present invention. The configuration of Fig. 7 can be made more clear by the following description.

Referring to FIG. 11, the control unit 130a may receive a sensing value in a predetermined period of time from the sensor unit 120a (S11).

The control unit 130a can determine whether or not a new object has entered the forbidden zone (S12). At this time, if it is detected that the sensing value of the sensing unit 120a exceeds the second threshold value TH2, the controller 130a can determine that the new object is in the prohibited zone D2. Here, the second threshold value may be a value obtained by adding a predetermined value to an initial value (a value sensed when the control panel 200a is installed, that is, when there is no object in the vicinity). Here, the forbidden zone may be an arc shape having a radius r and an angle of 180 degrees with respect to the center of the reflecting surface 122a. The forbidden zone may have an arc corresponding to 90 degrees on both sides of the line connecting the center of the ultrasonic transceiver 121a and the reflection surface 122a.

The control unit 130a may determine whether the new object remains in the entry state for a third reference time (e.g., 10 seconds) (S13). If it is determined in S13 that it is not held for the third reference time, the controller 130a may return to S12.

If it is determined in S13 that the new object remains in the entry state for the third reference time, the alarm unit 140a may perform the primary alarm (repeated warning light) (S14).

The control unit 130a may determine whether the state in which the new object enters the first alarm is maintained for a fourth reference time (for example, one minute) (S15).

If it is determined in S15 that it is not maintained for the fourth reference time, the alarm unit 140a cancels the first alarm, and the control unit 130a can return to step S12.

If it is determined that the first reference time is maintained for the fourth reference time, the alarm unit 140a may perform a second alarm (warning broadcast), and the photographing unit 150a may photograph the vicinity of the fire hydrant and transmit it to the fire control center or the traffic control center (S17).

 At this time, the controller 130a can determine whether the alarm is canceled (S18). At this time, the control unit 130a can release the alarm when the new entry object is detected to advance outside the prohibited zone D2 (in other words, when the sensing value of the sensing unit 120a is lower than the second threshold value) (S19). After the alarm is released in S19, the controller 130a can return to S61.

The sensor unit structure of FIG. 4 and the judgment method of the control unit can be specialized for the roadside outdoor fire hydrant, while the embodiment of FIGS. 7 to 11 can be universally applied to all fire hydrants.

1: Fire hydrant
100: Control panel
200: Solar cell
110:
120: sensing unit
130:
140:
150:
160:

Claims (31)

A control panel is provided on the outside,
The control panel
A sensing unit for sensing an object in a forbidden area around the fire hydrant;
A control unit for determining presence or absence of an object in the forbidden zone based on the sensing result of the sensing unit;
And an alarm unit for providing an alarm based on the determination result of the control unit,
The sensing unit
A main board bent toward the forbidden area; And
A first sensor, a second sensor, and a third sensor provided on the main board,
Wherein the first sensor is located at one side of the second sensor, the third sensor is located at the other side of the second sensor,
Wherein the control unit determines whether or not the vehicle has entered the forbidden zone using the sensed values of the first sensor and the second sensor and determines whether or not the vehicle has entered the prohibited zone using the third sensor,
The alarm unit provides the primary alarm in response to the control unit determining that the state in which the new vehicle enters the prohibited zone is maintained for the first reference time,
The primary alarm is a method of repeatedly lighting a warning lamp
Wherein the control unit determines whether there is a vehicle movement event in the forbidden zone for a second reference time before the new vehicle enters the forbidden zone after the first alarm is made,
If it is determined that the vehicle movement event does not exist in the forbidden zone during the second reference time, the alarm unit provides a secondary alarm,
The alarm unit releases the primary alarm if it is determined that the vehicle movement event is present in the forbidden zone during the second reference time,
The alarm unit provides the first alarm again when it is determined that the state in which the new vehicle enters the prohibited zone after the first alarm is released is maintained for the first reference time
The second reference time is a preset time at which the traffic lights cycle one cycle at an intersection,
Wherein the second alarm is a warning broadcast through a speaker. delete The method according to claim 1,
The main board is in the shape of an arc,
And the second sensor is installed at a position which is the center of the circular arc. delete The method according to claim 1,
Wherein the first sensor, the second sensor, and the third sensor are spaced at equal intervals. delete delete delete delete delete The method according to claim 1,
And a photographing unit for photographing the image of the forbidden zone. 12. The method of claim 11,
Wherein the photographing unit photographs the image of the forbidden zone in response to the second alarm. 13. The method of claim 12,
Wherein the photographing unit photographs the prohibited area image and provides the captured image to a fire control sensor or a traffic control center through a communication network. The method according to claim 1,
Wherein the first sensor, the second sensor, and the third sensor are ultrasonic sensors. The method according to claim 1,
Wherein the first sensor, the second sensor, and the third sensor have predetermined sensing distances. 16. The method of claim 15,
Wherein the second sensor monitors only one lane located in front of the fire hydrant, and the sensing distance of the second sensor is a lane width of the lane. 16. The method of claim 15,
Wherein the first sensor is a sensing distance of a distance to a first side boundary of one side of the forbidden zone,
Wherein the third sensor is a sensing distance of a distance to a second side boundary line on the other side of the prohibited area. delete delete delete delete delete delete delete delete delete Sensing the object in the forbidden zone around the fire hydrant;
Determining a presence or absence of an object in the forbidden zone based on the sensing result of the sensing unit;
And an alarm unit providing an alarm based on the determination result of the control unit
The sensing unit
A main board bent toward the forbidden area; And
A first sensor, a second sensor, and a third sensor provided on the main board,
Wherein the first sensor is located at one side of the second sensor, the third sensor is located at the other side of the second sensor,
Wherein the control unit determines whether or not the vehicle has entered the forbidden zone using the sensed values of the first sensor and the second sensor and determines whether the vehicle has entered the prohibited zone using the third sensor,
The alarm unit provides the primary alarm in response to the control unit determining that the state in which the new vehicle enters the prohibited zone is maintained for the first reference time,
The primary alarm is a method of repeatedly lighting a warning lamp
Wherein the control unit determines whether there is a vehicle movement event in the forbidden zone for a second reference time before the new vehicle enters the forbidden zone after the first alarm is made,
If it is determined that the vehicle movement event does not exist in the forbidden zone during the second reference time, the alarm unit provides a secondary alarm,
The alarm unit releases the primary alarm if it is determined that the vehicle movement event is present in the forbidden zone during the second reference time,
The alarm unit provides the first alarm again when it is determined that the state in which the new vehicle enters the prohibited zone after the first alarm is released is maintained for the first reference time
The second reference time is a preset time at which the traffic lights cycle one cycle at an intersection,
Wherein the second alarm is a warning broadcast through a speaker.
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