CN216562045U

CN216562045U - Alarm system for fire-fighting Internet of things

Info

Publication number: CN216562045U
Application number: CN202122684940.5U
Authority: CN
Inventors: 吕远
Original assignee: SHENZHEN FORSAFE SYSTEM TECHNOLOGY CO LTD
Current assignee: SHENZHEN FORSAFE SYSTEM TECHNOLOGY CO LTD
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2022-05-17
Anticipated expiration: 2031-11-04

Abstract

The utility model relates to an alarm system for a fire-fighting Internet of things, which comprises a plurality of terminal node devices, a fire alarm controller and at least one repeater, wherein the plurality of repeaters have a monitoring function and can realize the synchronization of information in the system, the repeater and the plurality of terminal node devices form a LoRa wireless communication network and are communicated with the fire alarm controller through a bus, the terminal node devices send signals to the repeaters at regular time, and when the repeaters do not receive the state information of a certain terminal node device within set time, the repeaters send fault signals to the fire alarm controller. The utility model realizes the integration of the fire-fighting bus control wire and the wireless, and when a new terminal node device is needed, the new wiring is not needed.

Description

Alarm system for fire-fighting Internet of things

Technical Field

The utility model relates to the technical field of fire fighting equipment, in particular to an alarm system for a fire fighting Internet of things.

Background

The fire control comprises multi-line control and bus control, the fire control bus control combines a signal transmission line of a fire alarm system and a fire control linkage system into a whole, namely, a smoke detector, a temperature detector, a combustible gas detector and a manual alarm button of the fire alarm system are arranged in a loop, and a control module loop for controlling the action of facilities and receiving an action feedback signal is arranged in the fire control linkage system. That is, all the equipment of the fire alarm system and the fire-fighting linkage system are connected in parallel to a bus.

The current fire alarm system generally adopts fire control bus control, the equipment that fire alarm and fire control linkage's control module communicated is bus power supply, consequently fire alarm system and with the equipment in the fire control linkage system all need lay wire the design with field bus when the building design, the security of wire rod and the aesthetic property of design are considered, the mode of burying in the wall body after the wiring can adopt the poling, but need when the sensor class equipment is newly increased in some position, need carry out secondary wiring, at secondary wiring in-process, need will bury the problem of secondary transformation such as wire rod rewiring design in the wall body.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems, the utility model provides an alarm system for the fire-fighting Internet of things, which realizes the integration of wireless and wired, and does not need to rewire when terminal node equipment is newly added.

The utility model provides an alarm system for a fire-fighting Internet of things, which comprises a plurality of terminal node devices, a fire alarm controller and at least one repeater, wherein the plurality of repeaters have a monitoring function to realize the synchronization of information in the system, the repeater and the plurality of terminal node devices form a LoRa wireless communication network and communicate with the fire alarm controller through a bus, the terminal node devices send signals to the repeaters at regular time, and when the repeaters do not receive the state information of a certain terminal node device within set time, the repeaters send fault signals to the fire alarm controller.

Preferably, the repeater converts the received abnormal signal sent by the terminal node device into an address mapped on a field bus, and communicates with the fire alarm controller according to the corresponding address.

Preferably, the end node device comprises a smoke detector, a temperature detector, a combustible gas detector and/or a residual current sensor.

Preferably, the repeater further includes a timer, configured to send a polling signal to the terminal node device at regular time.

Preferably, the shell of repeater adopts cylindrical structure, including base and lid, install bus binding post, time-recorder, loRa communication module in the base, and spring antenna, be equipped with switching pilot lamp, the wireless signal pilot lamp that is used for showing operating mode on the lid and patrol and examine the signal indicator lamp.

Preferably, the repeater adopts a wall-hanging type structure, a screw hole for fixing on a wall is formed in the base, threads are formed in the periphery of the base, and internal threads matched with the threads are formed in the cover body.

The fire-fighting alarm system provided by the utility model has the following beneficial effects:

1. the repeater is connected with each terminal node device LoRa wireless communication network and is connected with the fire alarm controller through a bus, so that the integration of wire and wireless is realized, and when a terminal node device is required to be newly added, the work of rewiring and newly-added loop connection is not required.

2. When the fire alarm system adopts bus communication, due to the problem of simultaneous power supply, the actual communication distance of the line is usually 1000 meters along with the accelerated voltage reduction of the impedance of the line, and the communication distance is prolonged by means of LoRa wireless communication.

3. When the fire alarm system adopts bus communication, a bus line needs to supply power to all equipment, so the actual load of the bus is larger due to the load quantity, loop design and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the present invention;

fig. 2 is a schematic diagram of the structure of the repeater of the present invention.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention will be described in detail and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the alarm system for the internet of things for fire protection of the present application includes a plurality of terminal node devices, at least one repeater and a fire alarm controller 8, wherein the repeater is connected with the fire alarm controller 8 through a bus 7.

The terminal node equipment comprises a smoke detector 2, a temperature detector 3, a combustible gas detector 4, an audible and visual alarm 5, a manual fire alarm button 6, a residual current sensor and the like. And the residual current sensor is used for detecting the condition of commercial power supply in the building.

The repeater 1 and the plurality of terminal node apparatuses form an LoRa wireless communication network. Namely, the repeater 1 is respectively communicated with the smoke detector 2, the temperature detector 3, the combustible gas detector 4, the sound-light alarm 5, the manual fire alarm button 6 and the residual current sensor through the LoRa wireless communication technology.

LoRa is a low-power consumption local area network wireless standard established by semtech corporation, the name of LoRa is Long-distance Radio (Long Range Radio), the LoRa is mainly characterized in that the distance of propagation is longer than that of other wireless modes under the same power consumption condition, the unification of low power consumption and Long distance is realized, the distance of the LoRa is longer than that of traditional wireless communication under the same power consumption condition, and the problems that low power consumption is difficult to cover Long distance and Long-distance general power consumption is high in communication are solved. Therefore, LoRa wireless communication is widely applied to the Internet of things.

According to the utility model, through LoRa wireless communication, the communication distance is prolonged again on the basis of the actual communication distance of the bus.

In this embodiment, each terminal node device sends a signal to the repeater 1 at regular time, and when the repeater 1 does not receive the status information of a certain terminal node device within a set time, sends a fault signal to the fire alarm controller 8.

The repeater 1 converts the received abnormal signal sent by the terminal node device into an address mapped on the bus 7, and communicates with the fire alarm controller 8 according to the corresponding address.

The utility model can comprise a plurality of repeaters, and the repeaters have a monitoring function to realize the synchronization of the information in the system. Further, a timer is further arranged in the repeater 1 and used for sending polling signals to each terminal node device at regular time.

In the utility model, the controller of the alarm circularly issues various inspection instructions and fire alarm instructions to the repeater through the bus, and the repeater replies the state information and the fire alarm information of the front-end equipment corresponding to the address to the controller through the bus for displaying or emergently alarming. The front-end equipment carries out wireless communication with the repeater through the LoRa module, inputs self ID information into the repeater and obtains a communication frequency band and a working mode from the repeater. In the normal operation mode, periodic heartbeat information needs to be sent to the repeater, so that the communication with the repeater is ensured to be normal. When the equipment fails or the detection value reaches the fire alarm threshold value, the front-end equipment sends corresponding state information to the repeater, and the repeater forwards the corresponding information to the controller to display fault information or perform emergency alarm.

The shell of repeater 1 adopts cylindrical structure, including base 11 and lid 12, installs bus binding post 111, time-recorder and loRa communication module in the base 11, is equipped with switching pilot lamp 121, wireless signal pilot lamp 122, the signal indicator lamp 123 of patrolling and examining that is used for showing mode on the lid 12.

In this embodiment, when the application is used, when any one or more of the terminal node devices, such as the smoke detector 2, the temperature detector 3, the combustible gas detector 4, and the sound and light alarm 5, detects an abnormality, the abnormality information is independently sent to the repeater 1 one by one through the LoRa wireless communication network, the repeater 1 converts the received abnormal signal sent by the terminal node device into an address mapped on the field bus, and communicates with the fire alarm controller 8 through the bus 7 according to the corresponding address, so as to implement fire alarm.

In addition, each terminal node device, such as the smoke detector 2, the temperature detector 3, the combustible gas detector 4, the audible and visual alarm 5, regularly sends a signal to the repeater 1 one by one, when the repeater 1 does not receive the state information of a certain terminal node device within a set time, the timer regularly sends a polling signal to the corresponding terminal node device which does not receive the state information, and if the state signal or information is not received, the repeater 1 sends a fault signal to the fire alarm controller 8.

Each terminal node device of this embodiment, for example smoke detector 2, temperature detector 3, combustible gas detector 4, audible and visual alarm 5 and repeater 1 adopt loRa wireless communication to be connected, repeater 1 again through bus 7 with fire alarm controller 8 communication to realize wireless and wired integration, when needs newly increase arbitrary equipment of above-mentioned terminal node device, all need not carry out rewiring and newly increase the work of return circuit connection, only need to connect the debugging through loRa wireless communication and can use.

Meanwhile, LoRa wireless communication connection is adopted, so that each terminal node device, such as the smoke detector 2, the temperature detector 3, the combustible gas detector 4, the acousto-optic alarm 5 and the like, can be independently powered, the load of the bus 7 is not needed, the actual load quantity of the bus 7 is reduced, and the information communication efficiency of fire alarm is improved.

In addition, this application still regularly sends the signal to repeater 1 through each terminal node equipment, like smoke detector 2, temperature detector 3, combustible gas detector 4, audible-visual alarm 5 etc. through loRa wireless communication, patrols and examines, and the terminal node equipment of trouble is checked to timely intelligence, has improved fire control thing networking alarm system's reliability.

The repeater adopts the wall-hanging structure, be equipped with the screw that is used for fixing on the wall on the base, the periphery of base is equipped with the screw thread, be equipped with on the lid with this screw thread complex internal thread. During installation, the base hanger is fixed on a wall through screws, and then the cover body is rotated on the base of the repeater. The installation position of the repeater is to avoid large metal objects and wireless electronic interference sources as much as possible.

The bus voltage range of the repeater is DC18V-DC28V, preferably DC 24V.

The bus type wireless repeater provided by the utility model is an extension of a wired fire alarm system, can realize wireless expansion of the wired system, and is suitable for being installed in places such as school dormitories, old homes, ancient building groups, urban farmer buildings, trade markets, KTV entertainment places and the like which are not suitable for installing or not installing the wired fire alarm system and need to adopt a scheme of the wireless fire alarm system.

The above description is provided for the fire alarm system, and for those skilled in the art, the idea of the embodiment of the present invention may be changed in the specific implementation manner and the application scope, and in summary, the content of the present specification should not be construed as limiting the present invention.

Claims

1. The utility model provides an alarm system for fire control thing networking, includes a plurality of terminal node equipment and fire alarm controller, its characterized in that still includes at least one repeater, possesses the monitoring function between a plurality of repeaters, realizes the synchronization of information in the system, repeater and a plurality of terminal node equipment constitute loRa wireless communication network and communicate with fire alarm controller through the bus, terminal node equipment regularly sends the signal to the repeater, when the repeater does not receive the status information of certain terminal node equipment in the settlement time, then sends fault signal to fire alarm controller, the shell of repeater adopts cylindrical structure, including base and lid, install bus binding post, timer, loRa communication module in the base, and spring antenna, be equipped with on the lid and be used for showing the switching pilot lamp of mode, Wireless signal pilot lamp and patrol and examine signal indicator.

2. The alarm system of claim 1, wherein the repeater converts the received abnormal signal from the end node device into an address mapped on the fieldbus and communicates with the fire alarm controller according to the corresponding address.

3. The alarm system of claim 1, wherein the end node devices comprise smoke detectors, temperature detectors, combustible gas detectors and/or residual current sensors.

4. The alarm system of claim 1, wherein the repeater further comprises a timer for timing routing inspection signals to the end node devices.

5. The alarm system of claim 1, wherein the repeater is a wall-mounted structure, the base is provided with a screw hole for fixing on a wall, the periphery of the base is provided with a thread, and the cover is provided with an internal thread matched with the thread.