CN207367344U - A kind of chemical agent alarm - Google Patents
A kind of chemical agent alarm Download PDFInfo
- Publication number
- CN207367344U CN207367344U CN201721171727.1U CN201721171727U CN207367344U CN 207367344 U CN207367344 U CN 207367344U CN 201721171727 U CN201721171727 U CN 201721171727U CN 207367344 U CN207367344 U CN 207367344U
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- alarm
- comparator
- host
- converter
- chemical agent
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Abstract
It the utility model is related to a kind of chemical agent alarm, it is characterised in that：Including host and probe system, the probe system is arranged in host；The chemical agent alarm of the utility model, using micro current amplifier, can sensitively detect the contamination situation of class nerve toxicant, when air chemical contamination reaches to a certain degree, alarm will send alarm alarm signal with sound and light mode；Alarm is continuously run two hours under defined environmental condition, after start, can occur without shutdown and wrong report phenomenon.
Description
Technical field
It the utility model is related to toxic agent detection field, more particularly to a kind of chemical agent alarm.
Background technology
Chemical agent alarm is mainly used for monitoring the contamination situation of class nerve toxicant in air, when air chemical contamination reaches necessarily
During degree, alarm will send alarm alarm signal with sound and light mode.
In our daily life, the toxic gas moment threatens our health and life security, such as most
The CO of closeness to life, it is to common are poisonous gas in people's daily life production, and colorless and odorless, is not easy by it has been found that working as
It is extremely dangerous that people, which is among CO gases, and the revealing of coal gas, coal-fired imperfect combustion can all produce CO, China
Toxic gas alarm control system experienced from scratch, it is also more next from simple to complicated evolution, its intelligence degree
Higher, its system complex, cost are higher, are poorly suitable for the small unit place such as residential neighborhoods, computer room, office.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of of low cost, chemical agent alarm of high sensitivity.
In order to solve the above technical problems, the technical solution of the utility model is：A kind of chemical agent alarm, its innovative point exist
In：Including host and probe system, the probe system is arranged in host；
A side on the host is provided with touch display circuit board, power supply indicator, alarm lamp and work and refers to
Show lamp；Another side of the host is provided with power interface, probe interface, remote alarm interface and communication interface；
The probe system includes gas path device and calibrating circuit；The gas path device includes micro machine, aspiration pump, calibrating
Device and suction nozzle；The comparator includes air inlet, gas outlet, comparator housing and the gas inspection being arranged in comparator housing
Survey device；The micro machine is connected with aspiration pump, and one end of aspiration pump is connected on the gas outlet of comparator；The suction nozzle is set
Put on the air inlet of comparator；
It is described calibrating circuit include power supply, resistance, micro current amplifier, A/D converter, D/A converter, CPU microcontrollers,
LED display, buzzer siren；The power supply, resistance and comparator are sequentially connected in series forming circuit；The micro current amplifier is simultaneously
It is associated on resistance, the A/D converter, D/A converter are connected on micro current amplifier and CPU microcontrollers, the CPU
LED display and buzzer siren are connected with microcontroller.
Further, the other end of the aspiration pump is provided with exhaust outlet regulating valve.
The utility model has the advantage of：
1）The chemical agent alarm of the utility model, using micro current amplifier, can sensitively detect class nerve poison
The contamination situation of agent, when air chemical contamination reaches to a certain degree, alarm will send alarm warning letter with sound and light mode
Number；Alarm is continuously run two hours under defined environmental condition, after start, can occur without shutdown and wrong report phenomenon.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is a kind of front view of chemical agent alarm of the utility model.
Fig. 2 is a kind of rearview of chemical agent alarm of the utility model.
Fig. 3 is a kind of gas path device of chemical agent alarm of the utility model.
Fig. 4 is a kind of calibrating circuit of toxic agent alarm of the utility model.
Embodiment
The following examples can make professional and technical personnel that the utility model be more fully understood, but therefore will not
The utility model is limited among the embodiment described scope.
A kind of chemical agent alarm as shown in Figures 1 to 4, including host 1 and probe system 2, the probe system 2 are set
1 in host.
A side on host 1, which is provided with, touches display circuit board 11, power supply indicator 12, alarm lamp 13 and work
Indicator light 14；Another side of the host is provided with power interface 15, probe interface 16, remote alarm interface 17 and communication interface
18。
Probe system 2 includes gas path device 21 and calibrating circuit 22；The gas path device 21 includes micro machine 23, aspiration pump
24th, comparator 25 and suction nozzle 26；The comparator 25 includes air inlet 251, gas outlet 252, comparator housing and is arranged on
Gas-detecting device in comparator housing；The micro machine 23 is connected with aspiration pump 24, and one end of aspiration pump 24 is connected to inspection
Determine on the gas outlet 252 of device 25；The suction nozzle 26 is arranged on the air inlet 251 of comparator 25.
Examining and determine circuit 22 includes power supply 221, resistance 222, micro current amplifier 223, A/D converter 224, D/A converter
225th, CPU microcontrollers 226, LED display 227, buzzer siren 228；The power supply 221, resistance 222 and comparator 25 are successively
Series connection forming circuit；The micro current amplifier 223 is connected in parallel on resistance 222, the A/D converter 224, D/A converter 225
It is connected on micro current amplifier 223 and CPU microcontrollers 226, LED display is connected with the CPU microcontrollers 226
227 and buzzer siren 228.
The other end of aspiration pump 24 is provided with exhaust outlet regulating valve 241.
It should be understood by those skilled in the art that the present utility model is not limited to the above embodiments, above-described embodiment and
The principle for simply illustrating the utility model described in specification, on the premise of not departing from the spirit and scope of the utility model,
The utility model also has various changes and modifications, these changes and improvements both fall within claimed the scope of the utility model
It is interior.The protection scope of the present invention is defined by the appended claims and their equivalents.
Claims (2)
- A kind of 1. chemical agent alarm, it is characterised in that：Including host and probe system, the probe system is arranged in host；A side on the host, which is provided with, touches display circuit board, power supply indicator, alarm lamp and work light； Another side of the host is provided with power interface, probe interface, remote alarm interface and communication interface；The probe system includes gas path device and calibrating circuit；The gas path device include micro machine, aspiration pump, comparator and Suction nozzle；The comparator includes air inlet, gas outlet, comparator housing and the gas detection dress being arranged in comparator housing Put；The micro machine is connected with aspiration pump, and one end of aspiration pump is connected on the gas outlet of comparator；The suction nozzle is arranged on On the air inlet of comparator；The calibrating circuit includes power supply, resistance, micro current amplifier, A/D converter, D/A converter, CPU microcontrollers, LED Display screen, buzzer siren；The power supply, resistance and comparator are sequentially connected in series forming circuit；The micro current amplifier is in parallel On resistance, the A/D converter, D/A converter are connected on micro current amplifier and CPU microcontrollers, the CPU are mono- LED display and buzzer siren are connected with piece machine.
- A kind of 2. chemical agent alarm according to claim 1, it is characterised in that：The other end of the aspiration pump is provided with row Gas port regulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721171727.1U CN207367344U (en) | 2017-09-13 | 2017-09-13 | A kind of chemical agent alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721171727.1U CN207367344U (en) | 2017-09-13 | 2017-09-13 | A kind of chemical agent alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207367344U true CN207367344U (en) | 2018-05-15 |
Family
ID=62348425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721171727.1U Active CN207367344U (en) | 2017-09-13 | 2017-09-13 | A kind of chemical agent alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207367344U (en) |
-
2017
- 2017-09-13 CN CN201721171727.1U patent/CN207367344U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |