CN209401134U - A kind of fire acousto-optic alarm - Google Patents
A kind of fire acousto-optic alarm Download PDFInfo
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- CN209401134U CN209401134U CN201920251882.7U CN201920251882U CN209401134U CN 209401134 U CN209401134 U CN 209401134U CN 201920251882 U CN201920251882 U CN 201920251882U CN 209401134 U CN209401134 U CN 209401134U
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Abstract
The utility model discloses a kind of fire acousto-optic alarm, including main control unit, the main control unit is connected separately with sound control unit, flash control unit, communication unit and battery, and the communication unit is connected with fire-fighting host by the communicating wireless signals of 433MHz.The utility model has the beneficial effects that solving wired acoustooptic alarm is routed cumbersome, at high cost problem, 433MHz wireless telecommunications have been given full play in the application of fire alarm industry, it is low in energy consumption.
Description
Technical field
The utility model relates to acoustooptic alarm technical fields, it particularly relates to a kind of fire acousto-optic alarm.
Background technique
Existing fire acousto-optic alarm uses wired mode, and most code-shaped alarm devices use 4 line systems, and 2 disappear
Anti- two lines bus, 2 power supply lines.Few part alarm device uses 2 line systems, remains fire-fighting two lines bus, eliminates power supply line, acousto-optic
Alarm device and the power supply of fire-fighting host communication and acoustooptic alarm are built upon on fire-fighting two lines bus.There are problems to have: 1, scene is applied
Work wiring is troublesome, it is necessary to be laid with special cable and cable tubing.2, acousto-optic can not be installed for the place of discomfort wiring
Alarm device.3, fire-fighting wiring wastes a large amount of manpower and material resources, is unfavorable for economical environment-protective, the rewiring again when needing to be transformed,
Waste of resource.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Utility model content
For above-mentioned technical problem in the related technology, the utility model proposes a kind of fire acousto-optic alarms, using sound
Light alarm device installs battery, and simultaneous communications are solved using wirelessly.
To realize the above-mentioned technical purpose, the technical solution of the utility model is achieved in that
A kind of fire acousto-optic alarm, including main control unit, the main control unit are connected separately with sound control unit, dodge
Light control unit, communication unit and battery, the communication unit are connected with fire-fighting host by the communicating wireless signals of 433MHz.
Further, the main control unit includes single-chip microcontroller.
Further, the sound control unit includes loudspeaker and current-limiting circuit.
Further, the flash control unit includes high-brightness light emitting diode and constant-current circuit.
Further, the communication unit includes A7139 communication module.
Further, the main control unit is also connected with fault detection unit, and the fault detection unit includes comparator.
Further, the single-chip microcontroller is built-in with WatchDog Timer and converter.
The utility model has the beneficial effects that solving wired acoustooptic alarm is routed cumbersome, at high cost problem, give full play to
Applications of the 433MHz wireless telecommunications in fire alarm industry, it is low in energy consumption.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the connection block diagram of the fire acousto-optic alarm according to the utility model embodiment；
Fig. 2 is the circuit diagram of the sound control unit according to the utility model embodiment；
Fig. 3 is the circuit diagram of the flash control unit according to the utility model embodiment；
Fig. 4 is the circuit diagram of the communication unit according to the utility model embodiment；
Fig. 5 is the circuit diagram of the main control unit according to the utility model embodiment；
Fig. 6 is the circuit diagram of the fault detection unit according to the utility model embodiment.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art's every other embodiment obtained, all belongs to
In the range of the utility model protection.
As shown in figures 1 to 6, a kind of fire acousto-optic alarm according to the utility model embodiment, including master control list
Member, the main control unit are connected separately with sound control unit, flash control unit, communication unit and battery, and the communication is single
Member is connected with fire-fighting host by the communicating wireless signals of 433MHz.
In a specific embodiment of the utility model, the main control unit includes single-chip microcontroller.
In a specific embodiment of the utility model, the sound control unit includes loudspeaker and current-limiting circuit.
In a specific embodiment of the utility model, the flash control unit includes high-brightness light emitting diode and perseverance
Current circuit.
In a specific embodiment of the utility model, the communication unit includes A7139 communication module.
In a specific embodiment of the utility model, the main control unit is also connected with fault detection unit, described
Fault detection unit includes comparator.
In a specific embodiment of the utility model, the single-chip microcontroller is built-in with WatchDog Timer and AD conversion
Device.
In order to facilitate the above-mentioned technical proposal for understanding the utility model, below by way of specifically used mode to the utility model
Above-mentioned technical proposal be described in detail.
433MHz is that the transmitting for exempting from application in China receives frequency range.With transmission range is long, penetration capacity is strong, networking is clever
The advantages that living, low in energy consumption.And fire acousto-optic alarm is the major product of fire protection warning, it is very widely used.Traditional code type
The key technology of acousto-optic is sound, light alarm and Communication Control.When 433MHz mechanics of communication and conventional fire acoustooptic alarm are mutually tied
When conjunction, just embodied with advantage the characteristics of product
Fire acousto-optic alarm described in the utility model, comprising: main control unit, sound control unit, flash of light control are single
Member, communication unit, battery and fault detection unit.
Main control unit includes single-chip microcontroller, is responsible for the control of entire fire acousto-optic alarm, makes the coordination work of modules
Make.Wherein sound control unit by PWM mode realize so that modified tone the period at 2.6s ± 0.1s, 3 meters sound pressure level in 95dB
(A weighted) left and right.Sound control unit is also added into current-limiting circuit, least in power-consuming in the case that guarantee meets sound pressure level.And
Sound pressure level is influenced whether will not be because of the electricity abundance of battery.Flash control unit is for periodically lighting two pole of high-brightness luminous
Pipe, the light for guaranteeing that fire acousto-optic alarm issues under 100lx ~ 150lx ambient light is high-visible at 25m, is added simultaneously
Constant-current circuit.Communication unit is worked using mature A7139 communication module, the module in the ISM band of 433MHz.The module
Small in size, power consumption is extremely low, normally receives electric current 3.8mA under mode, electric current 24mA under sending mode.With sleep pattern, electric current
It can be reduced to 1.5uA, which supports carrier wave to wake up.
Fire acousto-optic alarm needs work in interactive mode, receives the starting of fire-fighting host at any time, ceases and desist order.Simultaneously
Fire acousto-optic alarm can send online information and cell voltage and give fire-fighting host.When normal work, single-chip microcontroller and communication unit
It all works in suspend mode.Enter reception pattern after communication unit detects carrier signal, then communication unit passes through monolithic
The external interrupt pin of machine wakes up single-chip microcontroller, and single-chip microcontroller enters normal mode of operation immediately.Single-chip microcontroller is received after waking up by SPI
To valid data and after verifying correctly, the corresponding command, starting or stopping sound control unit, flash control unit are responded.With
Communication unit reenters sleep pattern afterwards.And single-chip microcontroller is due to sound control unit to be controlled, flash control unit, no longer into
Enter low-power consumption mode.After fire-fighting host wirelessly stops fire acousto-optic alarm, single-chip microcontroller and communication unit into
Enter low-power consumption mode.In addition, single-chip microcontroller can periodically wake up oneself by WatchDog Timer, subsequent single-chip microcontroller wakes up communication
Unit, makes communication unit enter sending mode, and battery information is sent to host in a manner of online heartbeat message by single-chip microcontroller.
The working principle of sound control unit: single-chip microcontroller issues the square wave of 1K ~ 2KHz, and square wave frequency sinusoidally becomes
Change.It is issued in the circulation of the threshold of audibility range periodically of people.Sound control unit circuit is to induction charging, inductive energy storage, simultaneously
Current-limiting circuit controls charging current in 60mA.Inductance discharges in discharge cycle to audio device (loudspeaker).Loudspeaker sending is played
The alarm sound of warning function.
The working principle of fault detection unit: single-chip microcontroller passes through in fault detection unit after being waken up by WatchDog Timer
Comparator detects cell voltage, and when cell voltage is lower than fault alarm threshold value, single-chip microcontroller obtains voltage letter by converter
Number, it is filtered, after obtaining exact failure signal, single-chip microcontroller wakes up communication unit, and fault message and cell voltage are sent out
Give fire-fighting host.It is sent completely rear single-chip microcontroller and communication unit enters low-power consumption mode.
In conclusion by means of the above-mentioned technical proposal of the utility model, it is cumbersome to solve wired acoustooptic alarm wiring, at
This high problem, has given full play to 433MHz wireless telecommunications in the application of fire alarm industry, low in energy consumption.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (7)
1. a kind of fire acousto-optic alarm, including main control unit, which is characterized in that the main control unit is connected separately with sound control
Unit, flash control unit, communication unit and battery processed, the communication unit are connected with by the communicating wireless signals of 433MHz
Fire-fighting host.
2. fire acousto-optic alarm according to claim 1, which is characterized in that the main control unit includes single-chip microcontroller.
3. fire acousto-optic alarm according to claim 1, which is characterized in that the sound control unit include loudspeaker and
Current-limiting circuit.
4. fire acousto-optic alarm according to claim 1, which is characterized in that the flash control unit includes high brighten the hair
Optical diode and constant-current circuit.
5. fire acousto-optic alarm according to claim 1, which is characterized in that the communication unit includes A7139 communication
Module.
6. fire acousto-optic alarm according to claim 1, which is characterized in that the main control unit is also connected with failure inspection
Unit is surveyed, the fault detection unit includes comparator.
7. fire acousto-optic alarm according to claim 2, which is characterized in that the single-chip microcontroller is built-in with house dog timing
Device and converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920251882.7U CN209401134U (en) | 2019-02-28 | 2019-02-28 | A kind of fire acousto-optic alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920251882.7U CN209401134U (en) | 2019-02-28 | 2019-02-28 | A kind of fire acousto-optic alarm |
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| Publication Number | Publication Date |
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| CN209401134U true CN209401134U (en) | 2019-09-17 |
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| CN201920251882.7U Active CN209401134U (en) | 2019-02-28 | 2019-02-28 | A kind of fire acousto-optic alarm |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109658647A (en) * | 2019-02-28 | 2019-04-19 | 上海金盾消防智能科技有限公司 | A kind of fire acousto-optic alarm |
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2019
- 2019-02-28 CN CN201920251882.7U patent/CN209401134U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109658647A (en) * | 2019-02-28 | 2019-04-19 | 上海金盾消防智能科技有限公司 | A kind of fire acousto-optic alarm |
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