CN208256054U - A kind of wireless smoke alarm based on narrowband - Google Patents

Abstract

The utility model discloses a kind of wireless smoke alarm based on narrowband, including battery, master chip having data processing function, smoke sensor device and the radio frequency chip for using LORA long distance modem, the master chip is connect with smoke sensor device and radio frequency chip respectively；The battery is electrically connected with master chip and smoke sensor device respectively.This product carries Smoke Detection and sends the function of warning message, and can be wirelessly connected by way of narrowband with long-range monitoring center, to realize long-range monitoring and real-time early warning.In addition, being used for extra long distance spread spectrum communication using the radio frequency chip of LORA long distance modem, strong interference immunity can reduce current drain to greatest extent, and distance, anti-interference and power problems can not be combined by solving traditional design scheme.

Description

A kind of wireless smoke alarm based on narrowband

Technical field

The utility model relates to a kind of wireless data acquisition device, particularly relate to a kind of to carry out smog based on narrowband The wireless smoke alarm for monitoring in real time and being alarmed in time according to smokescope.

Background technique

With society and expanding economy, fireproofing is more and more important, and more and more major hidden dangers are raw due to industry It produces and is generated in the daily life with the people.For early detection and notification fire, the harm of fire, the protection person are prevented and reduced It is most important with property safety.

In order to reduce the generation of accident, must just real-time monitoring be carried out to live smog, need advanced reliable biography Sensor realizes that the tight concentration for monitoring smog in environment finds accident potential in time, adopts an effective measure, accident is avoided to send out It is raw, it can just ensure personal and property safety.

Utility model content

The utility model discloses a kind of wireless smoke alarms based on the narrowband LoRa, and its purpose is to provide a kind of right Smog carries out the wireless smoke alarm for monitoring in real time and alarming in time according to smokescope.

The technical solution of the utility model is as follows:

A kind of wireless smoke alarm based on narrowband, including battery, master chip having data processing function, smog pass Sensor and using LORA long distance modem radio frequency chip, the master chip respectively with smoke sensor device and radio frequency core Piece connection；The battery is electrically connected with master chip and smoke sensor device respectively.

Further, the master chip includes comparator for judging smokescope size and for triggering radio frequency core The triggering alarm module that piece sends warning message in time, the comparator are connected with triggering alarm module, and the smog passes Sensor is connect with comparator；The triggering alarm module is connect with radio frequency chip.

Further, the master chip further includes and the unique corresponding address code of master chip.

Further, the master chip is stm321051c8t6.

From the above description of the utility model, it can be seen, compared to the prior art, the utility model has the advantages that

1, this product carries Smoke Detection and sends the function of warning message, and can pass through with long-range monitoring center narrow The mode of band is wirelessly connected, to realize long-range monitoring and real-time early warning.

2, smoke sensor device makes infrared receiving tube by the reflection of dust particle when there is smog using photoelectric technology The signal that transmitting tube can be received, when the smokescope detected is greater than the limit value of comparator, triggering alarm module is just carried out Work, and sent warning message by radio frequency chip.

3, using the radio frequency chip of LORA long distance modem, it is used for extra long distance spread spectrum communication, strong interference immunity, Current drain can be reduced to greatest extent, has apparent advantage in terms of antiblocking and selectivity using above-mentioned radio frequency chip, solved Traditional design of having determined scheme can not combine distance, anti-interference and power problems.

4, product can be connect by radio frequency chip with monitoring center, and when monitoring region generation fire, product issues immediately Alarm signal generates warning message to after monitoring center's alarm, then from monitoring center to the hand of responsible person concerned and administrative staff It holds terminal or mobile phone sends warning message, preferably guarantee communal facility safety, there is extensively application prospect.

Detailed description of the invention

Fig. 1 is the block schematic illustration of the utility model.

Fig. 2 is the workflow schematic diagram of the utility model in actual work.

Specific embodiment

Illustrate specific embodiment of the present utility model with reference to the accompanying drawings.

Referring to Fig.1, a kind of wireless smoke alarm based on narrowband, comprising:

Battery 1: for lithium battery or dry cell, being connected with voltage regulator circuit, and appraising and deciding output voltage is 3.3V.

Using the radio frequency chip 2 (hereinafter referred to as radio frequency chip) of LORA long distance modem: using SEMTECH company SX127X system class chip, be used for extra long distance spread spectrum communication, strong interference immunity can reduce current drain to greatest extent, benefit There is apparent advantage in terms of antiblocking and selectivity with above-mentioned radio frequency chip 2, solving traditional design scheme can not be simultaneous simultaneously Care for distance, anti-interference and power problems.

Master chip 3: using the stm321051c8t6 chip of ST Microelectronics, master chip 3 has data processing function Can, it includes the comparator 31 for judging smokescope size, is sent warning message in time for triggering radio frequency chip 2 Trigger alarm module 32 and with the unique corresponding address code 33 of master chip 3.The smoke sensor device 4 is connect with comparator 31, The smokescope information that smoke sensor device 4 will test feeds back to comparator 31,31 basis of comparator in a manner of digital signal Pre-set limits value is judged automatically.The comparator 31 is connected with triggering alarm module 32, the triggering alarm Module 32 is connect with radio frequency chip 2.The corresponding program of master chip 1 can be to the interval time and smokescope that comparator 31 works Limit value is configured, and work in generally 1 minute is primary, when the received smokescope data of comparator 31 are greater than preset When limit value, warning message is just sent to triggering alarm module 32 by comparator 31, and triggering alarm module 32 triggers radio frequency core again Piece 2, and finally sent warning message by radio frequency chip 2.According to address code 33, number that staff can will test rapidly It is mapped according to the location information of respective wireless smoke alarm.

Smoke sensor device 4: infrared receiving tube is made by the reflection of dust particle when there is smog using photoelectric technology The signal of transmitting tube can be received.

The master chip 3 is connect with smoke sensor device 4 and radio frequency chip 2 respectively, the battery 1 respectively with master chip 3 and Smoke sensor device 4 is electrically connected, and is powered simultaneously for master chip 3 and smoke sensor device 4.

Referring concurrently to Fig. 2, the workflow of the utility model is as follows: first carrying out related ginseng to the corresponding program of master chip 1 Several settings, such as: the interval time (usually 1 minute) that comparator 31 works, comparator 31 send report to triggering alarm module Limit value needed for alert signal.After work starts, master chip 3 first carries out module initialization, and smoke sensor device 4 is in real time to be monitored Region carries out the detection of smokescope, and the data feedback that will test compares primary for comparator 31 every 1 minutes to comparator 31. When the received smokescope data of comparator 31 are greater than limit value, warning message is just sent to triggering alarm mould by comparator 31 Block 32, triggering alarm module 32 triggers radio frequency chip 2 again, and is finally sent warning message by radio frequency chip 2, passes through LoRa communication network sends warning message to neighbouring infrastructure service network intelligence base station (base station 6), and Internet is passed through in base station 6 Or the communication modes such as GPRS, CDMA, monitoring center is transferred information to, and according to the address code 33 and GIS on master chip 1 Figure combines, and judge the position of monitored target rapidly and state and alarms, and alarm will notify fire-fighting center and related personnel Mobile phone terminal can promptly transfer relevant staff in time, be disposed in time, eliminate safe hidden trouble.When comparator 31 connects When the smokescope data of receipts are less than preset limit value, radio frequency chip 2 is in sleep state, i.e., will not be in real time to base station 6 send information, can be further reduced the loss of electricity in this way.

The above is only the specific embodiments of the present invention, but the design concept of the present invention is not limited thereto, All non-essential modifications to the present invention made by this concept belong to the row for invading scope of protection of the utility model For.

Claims (4)

1. a kind of wireless smoke alarm based on narrowband, it is characterised in that: including battery, main core having data processing function Piece, smoke sensor device and the radio frequency chip using LORA long distance modem, the master chip are sensed with smog respectively Device is connected with radio frequency chip；The battery is electrically connected with master chip and smoke sensor device respectively.

2. wireless smoke alarm according to claim 1, it is characterised in that: the master chip includes for judging smog The comparator of concentration and the triggering alarm module for sending warning message in time for triggering radio frequency chip, the comparison Device is connected with triggering alarm module, and the smoke sensor device is connect with comparator；The triggering alarm module and radio frequency chip Connection.

3. wireless smoke alarm according to claim 2, it is characterised in that: the master chip further include with master chip only One corresponding address code.

4. wireless smoke alarm according to any one of claims 1 to 3, it is characterised in that: the master chip is stm321051c8t6。