KR102353129B1 - Communication inspection method and fire alarm device using the same - Google Patents

Abstract

A communication inspection method according to an embodiment of the present invention may include the steps of: allowing at least one sensor among a plurality of sensors to transmit an active signal to a repeater every first time; allowing the repeater to transmit a response signal including time synchronization information to the sensor based on the active signal; allowing the sensor to detect an inspection frequency every second time; allowing the repeater to transmit the inspection frequency to the sensor based on the second time; and allowing the sensor receiving the inspection frequency to transmit an inspection response signal. An objective of the present invention is to provide the communication inspection method for minimizing battery loss, and a fire alarm device using the same.

Description

COMMUNICATION INSPECTION METHOD AND FIRE ALARM DEVICE USING THE SAME

The present invention relates to a communication inspection method capable of minimizing battery loss and a fire alarm device using the same.

In general, a fire detector transmits and receives a signal to and from a repeater at regular intervals to check the communication status. In order to continuously check the communication status, the fire detector can be switched from the standby state to the active state to transmit and receive signals to and from the repeater. However, in this case, the fire detector frequently repeats the standby state and the active state, mistaking the noise signal for a signal received from the repeater, and maintaining the active state, resulting in battery loss. Loss of battery in the smoke detector can cause the smoke detector to go out. In this case, users may be exposed to the risk of fire even if an actual fire occurs in the area where the fire alarm system is installed.

An object of the present invention is to provide a communication inspection method capable of minimizing battery loss and a fire alarm device using the same.

The communication check method according to an embodiment of the present invention comprises the steps of: at least one sensor among a plurality of sensors transmits an active signal to a repeater every first time, the repeater transmits time synchronization information to the sensor based on the active signal Transmitting a response signal comprising a step, the sensor detecting the inspection frequency every second time, the repeater transmitting the inspection frequency to the sensor based on the second time, and the inspection frequency The received sensor may include transmitting a check response signal.

The first time period may be 10 to 14 hours.

The second time period may be 80 to 120 seconds.

Transmitting the inspection frequency to the sensor and detecting the inspection frequency may be performed simultaneously.

Transmitting the response signal may include synchronizing time of the plurality of sensors and the repeater.

A fire alarm device according to an embodiment of the present invention includes a plurality of sensors, each of which generates fire information by detecting the occurrence of a fire, and performs RF communication (Radio Frequency communication) with each other, the plurality of sensors and the RF communication A repeater that performs a, a receiver that performs the RF communication with the repeater, and a first server that performs the RF communication with the receiver, wherein each of the plurality of sensors time is synchronized with the repeater, the plurality of Each of the sensors may detect an inspection frequency every predetermined time, and the repeater may transmit the inspection frequency to the sensor based on the predetermined time.

The predetermined time may be 80 to 120 seconds.

At least one sensor among the plurality of sensors may transmit an activation signal to the repeater every synchronous time.

The repeater may transmit a response signal including time synchronization information to the sensor based on the activation signal.

The synchronization time may be 10 to 14 hours.

As described above, the sensor and the repeater may be time-synchronized every first time. The sensor may be changed from the standby state to the active state every second time to detect the inspection frequency. The second time may be longer than the predetermined time. The repeater may transmit the inspection frequency to the sensor according to a second time when the sensor detects the inspection frequency based on the synchronized time. The sensor may be converted to an activated state at a necessary moment, and the sensor may detect an inspection frequency every second time, so that even if a noise signal is applied in the middle, it can be ignored. That is, the battery loss of the sensor can be reduced. The battery life of the battery part of the sensor can be improved. Accordingly, it is possible to prevent the sensor from being turned off at a necessary moment, and to provide a communication inspection method with improved reliability and a fire alarm device using the same.

1 illustrates a fire alarm device according to an embodiment of the present invention.
2 is a perspective view illustrating one sensor among a plurality of sensors according to an embodiment of the present invention.
3 is a perspective view showing a repeater according to an embodiment of the present invention.
4 shows a receiver according to an embodiment of the present invention.
5 illustrates a server according to an embodiment of the present invention.
6 illustrates a terminal of a person concerned according to an embodiment of the present invention.
7 is a flowchart illustrating a communication check method according to an embodiment of the present invention.
8 illustrates a communication check method according to an embodiment of the present invention.

In this specification, when a component (or region, layer, portion, etc.) is referred to as being “on,” “connected to,” or “coupled to” another component, it is directly disposed/on the other component. It means that it can be connected/coupled or a third component can be placed between them.

Like reference numerals refer to like elements. In addition, in the drawings, thicknesses, ratios, and dimensions of components are exaggerated for effective description of technical content.

“and/or” includes any combination of one or more that the associated configurations may define.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component. The singular expression includes the plural expression unless the context clearly dictates otherwise.

In addition, terms such as "below", "below", "above", and "upper side" are used to describe the relationship of the components shown in the drawings. The above terms are relative concepts, and are described based on directions indicated in the drawings.

Unless defined otherwise, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Also, terms such as terms defined in commonly used dictionaries should be construed as having a meaning consistent with their meaning in the context of the relevant art, and unless they are interpreted in an ideal or overly formal sense, they are explicitly defined herein can be

Terms such as “comprise” or “have” are intended to designate that a feature, number, step, action, component, part, or combination thereof described in the specification is present, and includes one or more other features, number, or step. , it should be understood that it does not preclude the possibility of the existence or addition of an operation, a component, a part, or a combination thereof.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 illustrates a fire alarm device according to an embodiment of the present invention.

Referring to FIG. 1 , the fire alarm device 10 may detect a fire situation. The fire alarm device 10 may include a sensing system 100 , a repeater 200 , a receiver 300 , and a first server 400 .

The sensing system 100 may be a system for detecting whether a fire has occurred. The sensing system 100 may include a plurality of sensors SM. 1 illustrates that the sensing system 100 includes five sensors SM by way of example, but is not limited thereto.

Each of the plurality of sensors SM may detect the occurrence of a fire. Each of the plurality of sensors MS may transmit the first fire detection signal SG-1 to the adjacent sensors SM and/or the repeater 200 .

The first fire detection signal SG-1 may include a first signal SG-1a and a second signal SG-1b. The first signal SG-1a may be a signal generated by the sensor SM that detects the occurrence of a fire. The second signal SG-1b may be a signal amplified by the sensor SM.

As a method of transmitting and receiving the first fire detection signal SG-1, a radio frequency (RF) communication method may be used. The RF communication method may be a communication method for exchanging information by radiating a radio frequency. It is a broadband communication method using a frequency, so it can have high stability because it is less affected by climate and environment. In the RF communication method, voice or other additional functions may be interlocked and the transmission speed may be high. For example, the RF communication method may use a frequency of 447 MHz to 924 MHz. However, this is exemplary and in an embodiment of the present invention, a communication method such as Ethernet, Wifi, LoRA, M2M, 3G, 4G, LTE, LTE-M, Bluetooth, or WiFi Direct may be used.

In an embodiment of the present invention, the RF communication method may include a Listen Before Transmission (LBT) communication method. This is a frequency selection method that determines whether the selected frequency is being used by another system, and selects another frequency when it is determined that it is occupied. For example, a node intending to transmit may first listen to the medium, determine if it is in an idle state, and then flush the backoff protocol prior to transmission. By distributing data using this LBT communication method, collisions between signals in the same band can be prevented.

The repeater 200 may perform RF communication with a plurality of sensors SM. For example, the repeater 200 may communicate with 40 sensors SM. The repeater 200 may receive the first fire detection signal SG-1 from the plurality of sensors SM. The repeater 200 may convert the first fire detection signal SG-1 into the second fire detection signal SG-2a. The repeater 200 may transmit the second fire detection signal SG-2a to the receiver 300 .

The repeater 200 may synchronize time with each of the plurality of sensors SM. This will be described later.

The RF communication method may be used as a method of transmitting the second fire detection signal SG-2a. That is, the repeater 200 and the receiver 300 may perform the RF communication.

The receiver 300 may receive the second fire detection signal SG-2a from the repeater 200 . The receiver 300 may convert the second fire detection signal SG-2a into the third fire detection signal SG-3a. The receiver 300 may transmit the third fire detection signal SG-3a to the first server 400 .

The RF communication method may be used as a method of transmitting the third fire detection signal SG-3. That is, the receiver 300 and the first server 400 may perform the RF communication.

The first server 400 may determine the fire situation based on the third fire detection signal SG-3 received from the receiver 300 . The first server 400 may determine the validity of the third fire detection signal SG-3.

The first server 400 may receive big data from an external second server BD. The big data may be stored in the memory of the second server BD. However, this is an example, and the big data according to an embodiment of the present invention may be stored in the server memory of the first server 400 .

The big data may include surrounding environment data for determining whether a fire has occurred. For example, the surrounding environment data includes data corresponding to the probability of occurrence of fire by date, data corresponding to the probability of occurrence of fire by time, data corresponding to the probability of occurrence of fire by space, data corresponding to the probability of occurrence of fire by temperature, and humidity. It may include at least one of data corresponding to the probability of occurrence of each fire, data corresponding to the probability of occurrence of fire by weather, data corresponding to the probability of occurrence of fire by industry, and data corresponding to the probability of occurrence of fire by user.

For example, the data corresponding to the fire occurrence probability for each date may include a fire occurrence probability for each day of the week and a fire occurrence probability for each month. The data corresponding to the fire occurrence probability for each time may include the fire occurrence probability divided into dawn, morning, afternoon, evening, or late night. The data corresponding to the fire occurrence probability for each space may include the fire occurrence probability divided into a city center, a mountainous area, a beach, or a rural area. The data corresponding to the fire occurrence probability for each temperature may include the fire occurrence probability divided into spring, summer, autumn, or winter. The data corresponding to the fire occurrence probability for each humidity may include a fire occurrence probability for each specific humidity value. The data corresponding to the fire occurrence probability for each weather may include a fire occurrence probability divided into a sunny day, a cloudy day, or a rainy day. The data corresponding to the fire occurrence probability for each industry may include a fire occurrence probability divided into homes, restaurants, factories, or offices. The fire occurrence probability for each user may include a fire occurrence probability divided by age, occupation, or gender.

The big data may be updated periodically.

The first server 400 may include an algorithm including an artificial intelligence model capable of determining non-fire information.

The first server 400 may determine the validity of the third fire detection signal SG-3 based on the big data and the values detected by each of the plurality of sensors SM based on different criteria for each situation. For example, the first server 400 may use the big data to determine whether the values detected by the plurality of sensors SM are invalid data such as water vapor, cigarette smoke, and exhaust gas. have.

When the first server 400 determines that the third fire detection signal SG-3 is a valid signal, a warning message and location information may be transmitted to the plurality of parties 20 .

The plurality of persons 20 may include, for example, a fire station, persons concerned at a place where a fire occurred, the Ministry of Public Safety and Security (or a public institution related to public safety), and the like. The plurality of parties 20 may receive the fire warning message in the form of a text message, a video message, or a voice message through a landline phone, a smart phone, or other portable terminal.

The first server 400 may transmit the fire warning message to the terminal MD.

When the first server 400 determines that the third fire detection signal SG-3 is an invalid signal, the third fire detection signal SG-3 may be ignored. Accordingly, it is possible to prevent non-fire alarms. The non-fire protection means that the fire alarm device 10 operates as a fire even though it is not a fire.

In addition, when the first server 400 determines that the third fire detection signal SG-3 is an invalid signal, the first server 400 controls so that the alarms of the plurality of sensing units SM do not sound. A signal may be transmitted to the plurality of sensors SM.

2 is a perspective view illustrating one sensor among a plurality of sensors according to an embodiment of the present invention.

1 and 2 , each of the plurality of sensing units SM may include different unique address information. Each of the plurality of sensing units SM includes a sensor SS, a sensing memory MM, a sensing communication unit ATN, a sensing control unit CC, an amplifier unit AMP, a battery unit TT1, and a synchronization unit TS. ) may be included.

The sensor SS may detect at least one of smoke, temperature, humidity, and gas. The sensor SS may generate fire information by sensing at least one of smoke, temperature, humidity, and gas. The fire information may include a value measured by the sensor SS. In FIG. 2 , one sensor SS is illustrated by way of example, but the present invention is not limited thereto. For example, each of the plurality of sensing units SM may include a plurality of sensors, and each of the plurality of sensors may sense at least one of smoke, temperature, humidity, and gas.

Information on the sensor SS may be stored in the sensing memory MM. The sensing unit SM may automatically determine a modulation method for a signal generated by the mounted sensor SS through information stored in the sensing memory MM. Through such an automatic modulation method, the sensing unit SM can transmit the fire detection signal SG-1 conveniently even if any type of sensors are mounted on each of the plurality of sensing units SM.

The address information may be stored in the sensing memory MM. An optimal signal transmission path for quickly transmitting the fire detection signal SG-1 to the repeater 200 may be stored in the sensing memory MM.

The sensing memory MM may include a volatile memory or a non-volatile memory. The volatile memory may include DRAM, SRAM, flash memory, or FeRAM. The non-volatile memory may include an SSD or HDD.

The sensing communication unit ATN may transmit the fire detection signal SG-1 to the repeater 200 . The sensing communication unit ATN may also transmit the fire detection signal SG-1 to other adjacent sensing units SM. The fire detection signal SG-1 may include the fire information and the address information generated by the sensor SS.

When receiving the fire occurrence signal from the sensor SS, the sensing communication unit ATN may transmit the first signal SG-1a to at least one of the plurality of adjacent sensing units SM. When receiving the fire occurrence signal from the sensor SS, the sensing communication unit ATN may transmit the second signal SG-1b to the repeater 200 .

When the sensing unit SM and the repeater 200 are far away from each other, and it is difficult for the repeater 200 to directly receive the fire detection signal SG-1, the sensing communication unit ATN sends a fire to another adjacent sensing unit SM. By transmitting the detection signal SG-1, signal transmission to the repeater 200 may be stably performed. The sensing communication unit ATN may receive the fire detection signal SG-1 from another adjacent sensing unit SM.

The amplifying unit AMP may amplify the fire detection signal SG-1. The sensing communication unit ATN may receive the fire detection signal SG-1 from another sensing unit SM. In the process of receiving the received fire detection signal SG-1 from another adjacent sensing unit SM, a transmission rate and/or accuracy may be reduced due to a transmission distance and noise. The amplifying unit AMP may amplify the degraded fire detection signal SG-1. Accordingly, the transmission rate and/or accuracy of the fire detection signal SG-1 may be improved. The sensing communication unit ATN may transmit the amplified fire detection signal SG-1 to the repeater 200 . The sensing communication unit ATN may transmit the amplified fire detection signal SG-1 to at least one of the plurality of adjacent sensing units SM. The amplified fire detection signal SG-1 may increase accuracy, transmission rate, and transmission distance of a signal transmitted between the plurality of sensing units SM and the repeater 200 .

The amplified fire detection signal SG-1 according to an embodiment of the present invention may be transmitted to another adjacent sensing unit SM and amplified again by the amplification unit AMP of another adjacent sensing unit SM.

According to the present invention, the plurality of sensing units SM may stably transmit data to the plurality of sensing units SM and the repeater 200 using the amplifier AMP. Accordingly, the reliability of the plurality of sensing units SM may be improved.

The battery unit TT1 may supply power to the sensor SS, the sensing memory MM, the amplification unit AMP, and the sensing communication unit ATN.

The sensing communication unit (ATN) according to an embodiment of the present invention may use an RF communication method. The RF communication method may consume less power. Power use of the sensing unit SM may be minimized. The sensing unit SM can be driven with low power. Accordingly, the battery unit TT1 may stably supply power to the sensor SS, the sensing memory MM, the amplification unit AMP, and the sensing communication unit ATN for a long time.

In addition, according to the present invention, the plurality of sensing units (SM) are divided into a power saving mode that consumes little power and a normal mode operating in a fire situation to reduce the power use of each of the plurality of sensing units (SM) can be minimized Accordingly, each of the plurality of sensing units SM may be driven with low power.

The synchronization unit TS may be synchronized with the time of the synchronization unit TS-G (refer to FIG. 3 ) of the repeater 200 . The plurality of sensors SM and the repeater 200 may perform a communication check based on the synchronized time. This will be described later.

3 is a perspective view showing a repeater according to an embodiment of the present invention.

1 and 3 , the repeater 200 may communicate with a plurality of sensing units SM. For example, one repeater 200 may communicate with 40 sensing units SM. However, this is exemplary and the number of sensing units SM with which the repeater 200 communicates according to an embodiment of the present invention is not limited thereto.

The repeater 200 may include a communication unit ATN-G, a power supply unit PW-G, a battery unit BT-G, a control unit CC-G, and a synchronization unit TS-G.

The communication unit ATN-G may communicate with the plurality of sensing units SM and the receiver 300 . The communication unit ATN-G may receive the fire detection signal SG-1 from each of the plurality of sensing units SM. The communication unit ATN-G and the sensing communication unit ATN (refer to FIG. 2 ) of each of the plurality of sensing units SM may communicate wirelessly through an RF communication method. The communication unit ATN-G and the communication unit ATN-R (refer to FIG. 4 ) of the receiver 300 may communicate wirelessly through an RF communication method.

The power supply unit PW-G may receive the first power from the outside. The first power may supply power to the communication unit ATN-G and the control unit CC-G.

The battery unit BT-G may supply the second power. The second power may supply power to the communication unit ATN-G and the control unit CC-G.

According to the present invention, even when the first power supplied from the power supply unit PW-G is cut off, the battery unit BT-G supplies the second power so that the repeater 200 can operate. The repeater 200 may stably receive the fire detection signal SG-1 from the plurality of sensing units SM, and stably transmit the second fire detection signal SG-2a to the receiver 300. . Accordingly, the reliability of signal transmission may be improved.

The controller CC-G may convert the fire detection signal SG-1 into the second fire detection signal SG-2a. When the first power from the power supply unit PW-G is not supplied to the communication unit ATN-G, the control unit CC-G transmits the second power from the battery unit BT-G to the communication unit ATN-G. can be supplied to

The synchronization unit TS-G may be synchronized with the time of the synchronization unit TS of the sensor SM. The plurality of sensors SM and the repeater 200 may perform a communication check based on the synchronized time. This will be described later.

4 shows a receiver according to an embodiment of the present invention.

1 and 4 , the receiver 300 may receive the second fire detection signal SG-2a from the plurality of repeaters 200 . For example, the receiver 300 may communicate with 24 repeaters 200 . That is, the receiver 300 may communicate with 960 sensing units SM.

The receiver 300 includes a communication unit (ATN-R), a power supply unit (PW-R), a battery unit (BT-R), a memory (MM-R), a control unit (CT-R), and a display unit (DA-R) can do.

The communication unit ATN-R may communicate with the repeater 200 and the server 400 . The communication unit ATN-R may receive the second fire detection signal SG-2a from the repeater 200 . The communication unit ATN-R may transmit the response signal SG-2b to the repeater 200 . The communication unit (ATN-R) and the communication unit (ATN-G, see FIG. 3 ) of the repeater 200 may communicate wirelessly through an RF communication method. The communication unit ATN-R may transmit the third fire detection signal SG-3 to the server 400 . The communication unit ATN-R may wirelessly communicate with the server transmission unit ATN-B (refer to FIG. 5 ) of the server 400 through an RF communication method.

The power supply unit PW-R may receive the first power from the outside. The first power may supply power to the communication unit ATN-R, the memory MM-R, the control unit CT-R, and the display unit DA-R.

The battery unit BT-R may supply the second power. The second power may supply power to the communication unit ATN-R, the memory MM-R, the control unit CT-R, and the display unit DA-R.

According to the present invention, the battery unit BT-R supplies the second power even if the first power supplied from the power source PW-R is cut off due to a power failure, so that the receiver 300 can operate. have. The receiver 300 may stably receive the second fire detection signal SG-2a from the repeater 200 and stably transmit the response signal SG-2b, and the third fire detection signal SG-3 ) can be stably transmitted to the server 400 . Accordingly, the reliability of signal transmission may be improved.

Address information of each of the plurality of sensing units SM may be stored in the memory MM-R. Location information of each of the plurality of sensing units SM may be stored in the memory MM-R based on the address information.

The display unit DA-R may provide image information corresponding to the state of the plurality of sensing units SM or the state of the repeater 200 . The display unit DA-R may include a liquid crystal display panel or an organic light emitting display panel. The display unit DA-R may receive an external input provided by a user. For example, the display unit DA-R may further include a touch unit.

The controller CT-R may control each of the plurality of sensing units SM. The user may provide an input to the display unit DA-R so that the control unit CT-R controls each of the plurality of sensing units SM. For example, the control unit CT-R may include information on a location in which each of the plurality of sensing units SM is disposed, information on a type of a value sensed by each of the plurality of sensing units SM, and/or Information on whether each of the plurality of sensing units SM operates normally may be controlled.

The receiver 300 may control the plurality of sensing units SM disposed in various places through the repeater 200 .

5 illustrates a server according to an embodiment of the present invention.

1 and 5 , the server 400 includes a server receiving unit (ATN-A), a control unit (CC-S, or control circuit), a server memory (MM-S), a server transmitting unit (ATN-B), and a display unit. (DA), speaker (SK), microphone (MIC), camera (CM), first to fifth buttons (BT1, BT2, BT3, BT4, BT5), and may include a door lock (DL).

The server receiving unit ATN-A may receive the second transmission signal SG-3 transmitted by the receiver 300 .

The controller CC-S may control the plurality of sensing units SM, the repeater 200, and the receiver 300, and determine the fire information and address information included in the second transmission signal SG-3. have.

When the identified address information is the same as the previously recognized address information, the controller CC-S may control the server 400 to ignore the corresponding second transmission signal SG-3. If the identified address information is different from the previously recognized address information, the controller CC-S may send a warning message to the parties corresponding to the address information identified in the server memory MM-S. have. Through such control, it is possible to prevent the same warning message from being repeatedly transmitted to the parties 20 .

Information (eg, contact information, address, or name) of the parties 20 may be stored in the server memory MM-S. The information of the parties 20 stored in the server memory MM-S may be matched with address information of each of the plurality of sensing units SM.

The server memory MM-S may include a volatile memory or a non-volatile memory. Volatile memory may include DRAM, SRAM, flash memory, or FeRAM. Non-volatile memory may include SSD or HDD.

The server transmitter ATN-B may transmit a fire alarm message to the parties 20 . The server 400 may transmit a fire alarm message to the parties 20 corresponding to the identified address information among the information of the parties 20 stored in the server memory MM-S. At this time, the relevant persons 20 corresponding to the identified address information are the owner of the place where the fire occurred, the family of the owner of the place where the fire occurred, the owner of the place adjacent to the place where the fire occurred, the competent fire department, or a related public institution may include

The server transmitter ATN-B may transmit a reception signal indicating that the second transmission signal SG-3 has been received to the receiver 300 . Upon receiving the received signal, the receiver 300 may determine that the transmitted second transfer signal SG-3 has been properly transferred to the server 400 .

The server transmitter (ATN-B) may transmit information in a Wideband Code Division Multiple Access (WCDMA) communication method. In WCDMA, the wider the bandwidth, the stronger the frequency selective fading, and when the same data is transmitted, the bandwidth increases and thus the processing gain increases. In addition, since multipath can be resolved, propagation delay in an indoor environment can be overcome even in the case of microcells. Therefore, WCDMA can be effective in transmitting a fire alarm message in a fire situation in which a stable message must be transmitted quickly because it is an urgent situation. In addition, the bandwidth efficiency per 1 MHz bandwidth is excellent, which is advantageous in terms of subscriber capacity, and the processing gain is increased to reduce the capacity of the power amplifier, thereby reducing the implementation cost. have.

The display unit DA may provide image information corresponding to the state of the receiver 300 or the state of the plurality of sensing units SM. The display unit DA may include a liquid crystal display panel or an organic light emitting display panel.

The speaker SK may emit an alarm sound when the server 400 receives the second transmission signal SG-3.

The microphone MIC may recognize a user's voice in the vicinity of the server 400 . The microphone MIC may be used to recognize a user's voice command in an emergency situation. In this case, the server 400 may have a built-in program or system for recognizing a user's voice command.

The camera CM may detect and/or recognize a motion of a user in the vicinity of the server 400 .

The user may manually report a fire by pressing the first button BT1 or by applying a touch to the fire department. In the initial fire stage before the plurality of sensing units SM detects whether a fire exists, the server 400 may promptly report the occurrence of a fire when nearby people discover a fire.

The user may stop generating an alarm sound from the speaker SK by pressing the second button BT2 or applying a touch.

The user may communicate (or call) with an external communication device by pressing the third button BT3 or applying a touch. After the user presses the third button BT3, the user may transmit voice information to the other party through the microphone MIC and receive voice information from the other party through the speaker SK.

The user may check the states of the plurality of sensing units SM, the repeater 200 , and the receiver 300 by pressing the fourth button BT4 or applying a touch. For example, although there is no fire, the server 400 receives the virtual second transmission signal SG-3 from the receiver 300 , and the server 400 warns at least one of the parties 20 . message can be sent. In this way, it can be checked whether the fire alarm device 10 according to an embodiment of the present invention operates normally.

Also, the server 400 may transmit an operation check signal to each of the plurality of sensing units SM. Each of the plurality of sensing units operating in the power saving mode may receive an operation check signal and operate in the normal mode. In this case, each of the plurality of sensing units may operate in a power saving mode after transmitting the communication operation state to the first server 400 through the repeater 200 and the receiver 300 .

The user may initialize the signal transmission path stored in the sensor memory MM (refer to FIG. 3 ) of each of the plurality of sensing units SM by pressing the fifth button BT5 or applying a touch.

The user may open the outer case of the server 400 by using the door lock DL. After opening the outer case, the internal parts can be easily inspected.

Although not shown, the server 400 may include a separate battery therein. In addition, the server 400 may include a function of recording the power supply applied to the server 400 when it is interrupted, and notifying the relevant contents to the concerned parties.

6 illustrates a terminal of a person concerned according to an embodiment of the present invention.

1 and 6 , the terminal MD may include a smart phone, a desktop computer, a laptop computer, a tablet PC, or a wearable device. However, this is an example, and the terminal MD according to an embodiment of the present invention may include various devices capable of communication. 6 illustrates a smartphone as an example of a terminal (MD) of a person concerned.

A person concerned may remotely control the plurality of sensing units SM, the repeater 200 , the receiver 300 , or the server 400 using the terminal MD. In this case, the terminal MD may transmit a remote control signal to the plurality of sensing units SM, the repeater 200 , the receiver 300 , or the server 400 .

The functions FC1 , FC2 , FC3 , and FC4 that can be controlled using the terminal MD include the first function FC1 , the second function FC2 , the third function FC3 , and the fourth function FC4 . ) may be included.

The first function FC1 may be a setting function. The person 20 uses the first function FC1 to input the serial number of each of the plurality of sensing units SM, or input information (contact information) of the parties 20 who will receive the fire alarm message, An address of a place where each of the plurality of sensing units SM is installed may be input.

The second function FC2 may be a virtual breaking news test function. The person concerned 20 may check whether the server 400 normally transmits the fire alarm message from a remote location using the second function FC2.

The third function FC3 may be a system check function. The person concerned 20 uses the third function FC3 to operate the plurality of sensing units SM, the repeater 200 , the receiver 300 or the server 400 (eg, power is normally applied and the existence, etc.) can be checked.

The fourth function FC4 may be an upgrade function. The person concerned 20 checks the firmware version of the plurality of sensing units SM, the repeater 200 , the receiver 300 , or the server 400 remotely using the terminal MD and upgrades the firmware. can

The fifth function FC5 may be a function of capturing a QR code. Each of the plurality of sensing units SM may include a QR code including address information. The terminal MD may photograph the QR code. The terminal MD may read the address information of the plurality of sensing units SM by interpreting the QR code. The terminal MD may access information stored in the memory (MM-S, see FIG. 5 ) by accessing the memory (MM-S, see FIG. 5 ) of the server 400 . The terminal MD may modify the information stored in the memory (MM-S, see FIG. 5 ). The information may be information on each of the plurality of sensing units SM. For example, the terminal MD may modify the address information stored in the memory (MM-S, see FIG. 5 ) with the address information read through the QR code. The terminal MD may store the modified information in a memory (MM-S, see FIG. 5 ).

According to the present invention, the person concerned 20 may directly or indirectly access the plurality of sensing units SM, the repeater 200 , the receiver 300 , and the server 400 through the terminal MD. The person concerned 20 may cause the fire alarm device 10 to operate through the plurality of sensing units SM, the repeater 200 , the receiver 300 , and the terminal MD associated with the server 400 . Be prepared for many possible errors. The person concerned 20 can quickly respond to the error. Accordingly, it is possible to provide the fire alarm device 10 with improved reliability.

7 is a flowchart illustrating a communication inspection method according to an embodiment of the present invention, and FIG. 8 is a diagram illustrating a communication inspection method according to an embodiment of the present invention.

1, 7, and 8 , at least one sensor SM among a plurality of sensors may transmit an activation signal AS to the repeater 200 every first time TM1 ( S100 ). . The first time TM1 may be referred to as a synchronization time TM1. The repeater 200 may transmit the response signal AC including the time synchronization information TC to the sensor SM based on the activation signal AS (S200).

The sensor SM receiving the response signal AC may be time synchronized with the repeater 200 . For example, the synchronization unit TS (refer to FIG. 2) may be synchronized with the time of the synchronization unit TS-G (refer to FIG. 3).

The first time TM1 may be 10 to 14 hours. For example, the first time TM1 may be 12 hours. The time measuring unit included in each of the plurality of sensors SM and the repeater 200 does not cause an error of more than 1 second in 12 hours.

The sensor SM may detect the inspection frequency CF every second time TM2 ( S300 ). The sensor SM may be converted from the standby state to the active state to periodically detect the inspection frequency CF every second time TM2 . The sensor SM may detect the inspection frequency CF for a predetermined time. The predetermined time may be 2 to 6 milliseconds. For example, the predetermined time may be 4 milliseconds.

The second time TM2 may be 80 to 120 seconds. For example, the second time TM2 may be 100 seconds. That is, the sensor SM may be converted into an active state to detect the inspection frequency CF every 100 seconds.

The repeater 200 may transmit the inspection frequency CF to the sensor SM based on the second time TM2 ( S400 ). The repeater 200 may transmit the inspection frequency CF when the sensor SM detects the inspection frequency CF based on the synchronized time.

The repeater 200 may transmit the inspection frequency CF according to the time when the sensor SM detects the inspection frequency CF based on the synchronized time and the second time TM2 . Transmitting the check frequency CF to the sensor SM and sensing the check frequency CF may proceed simultaneously.

The sensor SM receiving the inspection frequency CF may transmit the inspection response signal CA to the repeater 200 ( S500 ). Through the inspection response signal CA, the repeater 200 may determine that it is normally connected to each of the plurality of sensors SM.

Unlike the present invention, the sensor may transmit/receive a signal to/from the repeater every predetermined time to check the communication state. The sensor may be activated at regular intervals to detect the inspection frequency. The sensor and the repeater may continuously check a communication state with each other. For example, the predetermined time may be 3.7 seconds. An activated sensor may receive the check frequency from the repeater to check communication between the sensor and the repeater. However, the sensor may repeat the activation state in the standby state to continuously check the communication state. In addition, the noise signal may be mistaken for the check frequency to maintain an active state. In this case, the battery of the sensor may be lost. However, according to the present invention, the time of the sensor SM and the repeater 200 may be synchronized for each first time TM1 . The sensor SM may be changed from the standby state to the active state every second time TM2 to detect the inspection frequency CF. The second time TM2 may be longer than the predetermined time. The repeater 200 may transmit the inspection frequency CF to the sensor SM according to the second time TM2 when the sensor SM detects the inspection frequency CF based on the synchronized time. The sensor SM may be converted to an activated state at a necessary moment, and the sensor SM detects the inspection frequency CF every second time TM2 , so that even if a noise signal is applied in the middle, it can be ignored. That is, battery loss of the sensor SM may be reduced. The battery time of the battery unit TT1 of the sensor SM may be improved. Accordingly, it is possible to prevent the sensor SM from being turned off at a necessary moment, and it is possible to provide a communication inspection method with improved reliability and a fire alarm device 10 using the same.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art or those having ordinary skill in the art will not depart from the spirit and scope of the present invention described in the claims to be described later. It will be understood that various modifications and variations of the present invention can be made without departing from the scope of the present invention. Accordingly, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

10: fire alarm device SM: a plurality of sensors
200: repeater 300: receiver
400: first server

Claims (10)

at least one sensor of the plurality of sensors transmitting an activation signal to the repeater every first time;
transmitting, by the repeater, a response signal including time synchronization information to the sensor based on the active signal;
detecting, by the sensor, an inspection frequency every second time shorter than the first time;
transmitting, by the repeater, the inspection frequency to the sensor based on the second time; and
and transmitting, by the sensor receiving the inspection frequency, an inspection response signal. According to claim 1,
wherein the first time period is 10 to 14 hours. According to claim 1,
The second time period is 80 to 120 seconds. According to claim 1,
A communication inspection method in which the step of transmitting the inspection frequency to the sensor and the step of detecting the inspection frequency are performed simultaneously. According to claim 1,
Transmitting the response signal includes the step of synchronizing time of the plurality of sensors and the repeater. a plurality of sensors, each of which generates fire information by detecting the occurrence of a fire, and performs RF communication (Radio Frequency communication) with each other;
a repeater performing the RF communication with the plurality of sensors;
a receiver performing the RF communication with the repeater; and
A first server for performing the RF communication with the receiver,
Each of the plurality of sensors is time synchronized with the repeater,
Each of the plurality of sensors detects an inspection frequency every predetermined time, and the repeater transmits the inspection frequency to the sensor based on the predetermined time. 7. The method of claim 6,
The predetermined time period is 80 to 120 seconds. 7. The method of claim 6,
At least one sensor among the plurality of sensors transmits an activation signal to the repeater at synchronous time intervals. 9. The method of claim 8,
The repeater transmits a response signal including time synchronization information to the sensor based on the activation signal. 9. The method of claim 8,
The synchronous time is 10 to 14 hours.

Images