CN208596452U - A kind of toxic air alarm device - Google Patents

Abstract

The utility model discloses a kind of toxic air alarm devices, including aluminium alloy explosion-resistant enclosure, and are fixed by bolts in the positive reinforcement lid of aluminium alloy explosion-resistant enclosure；Aluminium alloy explosion-resistant enclosure top side is provided with lead incoming seal head, and the other side is sealed and installed with sound-light alarm column by bolt tube；The sound-light alarm column top is equipped with transparent end cap；LED light group is installed on the inside of the transparent end cap；Buzzer group is installed on the inside of the sound-light alarm column；The LED light group and buzzer group are each coupled electrically to controller；The controller is connected with Leakage inspection circuit by comparator；The controller is also electrically connected with toxic gas detection module.The toxic air alarm device of the utility model, using external sound light alarming circuit；It both will not influence alarm integral waterproofing anti-dust performance, while sound-light alarm effect is good；In addition, it uses Leakage inspection and gas component content to detect progressive progress, energy-saving effect is good.

Description

A kind of toxic air alarm device

Technical field

The utility model relates to a kind of gas alarms, and in particular to a kind of toxic air alarm device belongs to gas alarm Device technical field.

Background technique

As the improvement of people's living standards, more and more people have to the safety and comfort in living space it is higher It is required that；The leak case of household toxic air alarm device energy real-time monitoring fuel gas, once it reveals, i.e., it is flammable in air Gas reaches a certain concentration, then alarm immediately alarm by carry out sound, light, the generation of accident is effectively prevent, for this purpose, Chinese patent Shen Please number: 201210440656.6, disclosing a kind of toxic air alarm device to belong to alarm includes single-chip microcontroller, detection circuit, A/D Conversion circuit, sound light alarming circuit, exhaust fan, solenoid valve, relay, light-emitting diode display and power supply, structural feature single-chip microcontroller point It is not connected with A/D conversion circuit, sound light alarming circuit, relay, light-emitting diode display and power supply, A/D conversion circuit and detection circuit It is connected, relay is connected with exhaust fan, solenoid valve respectively；It is numerous in the setting of existing its alarm point of many industrial sites, and it is above-mentioned Technical solution can only individually be detected, cannot achieve master control interconnection plane formula monitoring, in addition, its control mode for it is some can not cloth The field of line closes significant discomfort and uses；In addition, existing toxic air alarm device is built-in acousto-optic circuit and acousto-optic response component mostly； It had both influenced alarm enclosure interior water proof anti-dust performance；It is not obvious enough to will also result in sound-light alarm simultaneously.

Utility model content

In order to solve the above problems, the utility model proposes a kind of toxic air alarm device, using external sound-light alarm Circuit；It both will not influence alarm integral waterproofing anti-dust performance, while sound-light alarm effect is good；In addition, it uses gas to let out Leak detection and gas component content detect progressive progress, and energy-saving effect is good.

The toxic air alarm device of the utility model, including aluminium alloy explosion-resistant enclosure, and it is fixed by bolts in aluminium alloy The positive reinforcement lid of explosion-resistant enclosure；Aluminium alloy explosion-resistant enclosure top side is provided with lead incoming seal head, another Side is sealed and installed with sound-light alarm column by bolt tube；The sound-light alarm column top is equipped with transparent end cap；The transparent end Lid inside is equipped with LED light group；Buzzer group is installed on the inside of the sound-light alarm column；The LED light group and buzzer group are equal It is electrically connected to controller；The controller is connected with Leakage inspection circuit by comparator；The controller is also electrically connected There is toxic gas detection module.

As preferred embodiment, the Leakage inspection circuit includes gas sensor；The gas sensor Output end and ground terminal are provided with a potentiometer；The gas sensor output end is connected to by transistor switching circuit to be compared Device；Another relatively end of the comparator is connected to power supply；The comparator output terminal is connected to controller, when not having gas in air When body leaks, transistor base does not have electric current, and two input terminal of comparator is high level, low level is exported, at this point, controller It can't detect signal；When thering is gas to leak and reaching certain threshold value, triode switch conducting, collector approximate with emitter zero Current potential, comparator exports high level at this time, and after controller detects high level signal, driving toxic gas detection module is had Evil gas componant and content are detected, and when a certain data are more than threshold value, controller directly drives LED light group stroboscopic and buzzer Audible alarm.

As preferred embodiment, the LED light group is electrically connected multiple LED by LED driver and constitutes；The LED drives Dynamic device is electrically connected controller；The buzzer group includes the buzzing driver being electrically connected with the controller；The buzzing driver electricity Connect buzzer.

As preferred embodiment, the toxic gas detection module is by including measurement processor；And and detection processing Device electrical connection multiple and different detection types pure gas detection module constitute, when detect a certain categorical data be more than threshold Value, gives controller signals, and controller directly drives LED light group stroboscopic and buzzer audible alarm.

As preferred embodiment, the pure gas detection module includes automatic compensation and the formaldehyde inspection of analog-to-digital conversion Unit and Carbon Monoxide Detection unit are surveyed, the detection unit module of existing maturation is directlyed adopt, measurement processor is only opened It opens and detects and numerical data is sent to measurement processor to the far call for storing, and receiving bus.

As preferred embodiment, the controller is also electrically connected with the match circuit with bus hot plug, by Single toxic air alarm device data are sent to bus with circuit, data are sent to multipoint controller and are monitored alarm by bus.

Compared with prior art, the toxic air alarm device of the utility model, using sound-light alarm, energy Effectively warning toxic gas leakage, takes timely measure the generation for avoiding accident；It is carried out real by Leakage inspection circuit When monitoring leakage situation, until detection gas leakage, toxic gas detection module action carries out data acquisition and monitoring, alarming, It is more energy saving, and is able to extend monitoring time.

Detailed description of the invention

Fig. 1 is the overall structure diagram of the utility model.

Fig. 2 is the internal circuit functional block diagram of the utility model.

Specific embodiment

Embodiment 1:

Toxic air alarm device as depicted in figs. 1 and 2, including aluminium alloy explosion-resistant enclosure 1, and it is fixed by bolts in aluminium The positive reinforcement lid 2 of alloy explosion-resistant enclosure；The 1 top side of aluminium alloy explosion-resistant enclosure is provided with lead incoming seal head 3, Its other side is sealed and installed with sound-light alarm column 4 by bolt tube；Transparent end cap 5 is installed at the top of the sound-light alarm column 4；Institute It states and LED light group 6 is installed on the inside of transparent end cap 5；Buzzer group 7 is installed on the inside of the sound-light alarm column 4；The LED light group 6 Controller CPU is each coupled electrically to buzzer group 7；The controller CPU is connected with Leakage inspection electricity by comparator AC Road 8；The controller CPU is also electrically connected with toxic gas detection module 9；The toxic gas detection module 9 and gas leakage Detection circuit 8 is mounted on its test side of aluminium alloy explosion-resistant enclosure 1A.

In another embodiment, the Leakage inspection circuit 8 includes gas sensor QM；The gas sensor QM is defeated Outlet and ground terminal are provided with a potentiometer RP；The gas sensor QM output end is connected to ratio by transistor switching circuit 10 Compared with device AC；Another relatively end the comparator AC is connected to power Vcc；The comparator AC output end is connected to controller CPU, When not having gas leakage in air, transistor base does not have electric current, and two input terminal of comparator is high level, exports low electricity It is flat, at this point, controller can't detect signal；When thering is gas to leak and reaching certain threshold value, triode switch conducting, collector Zero potential approximate with emitter, comparator exports high level at this time, after controller detects high level signal, drives toxic gas Detection module carries out pernicious gas ingredient and content is detected, and when a certain data are more than threshold value, controller directly drives LED light Group stroboscopic and buzzer audible alarm.

In another embodiment, the LED light group 6 is electrically connected multiple LED by LED driver and constitutes；The LED driver electricity Connect controller；The buzzer group 7 includes the buzzing driver being electrically connected with the controller；The buzzing driver is electrically connected bee Ring device.

In another embodiment, the toxic gas detection module 9 is by including measurement processor 91；And it is electric with measurement processor Connection multiple and different detection types pure gas detection module 92 constitute, when detect a certain categorical data be more than threshold value, It gives controller signals, and controller directly drives LED light group stroboscopic and buzzer audible alarm.

In another embodiment, the pure gas detection module 92 includes the formaldehyde examination list of automatic compensation and analog-to-digital conversion Member and Carbon Monoxide Detection unit, directly adopt the detection unit module of existing maturation, and measurement processor only opens inspection It surveys and numerical data is sent to measurement processor to the far call for storing, and receiving bus.

In another embodiment, the controller CPU be also electrically connected with the match circuit of bus hot plug (not shown), lead to Overmatching circuit send single toxic air alarm device data to bus, and data are sent to multipoint controller and are monitored report by bus It is alert.

Above-described embodiment is only the better embodiment of the utility model, therefore all according to the utility model patent application range The equivalent change or modification that the structure, feature and principle is done, is included in the scope of the utility model patent application.

Claims (6)

1. a kind of toxic air alarm device, it is characterised in that: including aluminium alloy explosion-resistant enclosure, and be fixed by bolts in aluminium alloy The positive reinforcement lid of explosion-resistant enclosure；Aluminium alloy explosion-resistant enclosure top side is provided with lead incoming seal head, another Side is sealed and installed with sound-light alarm column by bolt tube；The sound-light alarm column top is equipped with transparent end cap；The transparent end Lid inside is equipped with LED light group；Buzzer group is installed on the inside of the sound-light alarm column；The LED light group and buzzer group are equal It is electrically connected to controller；The controller is connected with Leakage inspection circuit by comparator；The controller is also electrically connected There is toxic gas detection module.

2. toxic air alarm device according to claim 1, it is characterised in that: the Leakage inspection circuit includes gas Dependent sensor；The gas sensor output end and ground terminal are provided with a potentiometer；The gas sensor output end passes through three Pole pipe switching circuit is connected to comparator；Another relatively end of the comparator is connected to power supply；The comparator output terminal connection To controller.

3. toxic air alarm device according to claim 1, it is characterised in that: the LED light group is electrically connected by LED driver Multiple LED are met to constitute；The LED driver is electrically connected controller；The buzzer group includes the buzzing being electrically connected with the controller Driver；The buzzing driver is electrically connected buzzer.

4. toxic air alarm device according to claim 1, it is characterised in that: the toxic gas detection module is by including Measurement processor；And the pure gas detection module for the multiple and different detection types being electrically connected with measurement processor is constituted.

5. toxic air alarm device according to claim 4, it is characterised in that: the pure gas detection module includes certainly The formaldehyde examination unit and Carbon Monoxide Detection unit of dynamic compensation and analog-to-digital conversion.

6. toxic air alarm device according to claim 1, it is characterised in that: the controller is also electrically connected with and bus The match circuit of hot plug.