CN205722321U

CN205722321U - Gas detector

Info

Publication number: CN205722321U
Application number: CN201620298246.6U
Authority: CN
Inventors: 黎宜
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-04-11
Filing date: 2016-04-11
Publication date: 2016-11-23
Anticipated expiration: 2026-04-11

Abstract

The utility model belongs to household safe gas technical field, it is specifically related to gas detector, including carbon monoxide transducer, methane transducer, LPG gas sensor, central processing unit, wireless transport module, audible-visual annunciator and air valve, described carbon monoxide transducer is connected with the serial ports of central processing unit, described methane transducer and LPG gas sensor are connected with the analog port of central processing unit, described central processing unit includes that A/D changes, temperature compensator, table look-up evaluation and data process, the serial ports of described central processing unit processes with data and is connected, the analog port of described central processing unit is changed by A/D and temperature compensator, evaluation and the data of tabling look-up process and connect, described wireless transport module and data process, air valve wireless connection, described data process and are connected with audible-visual annunciator.Its objective is: solve the problem that existing current family gas leakage causes the contingency such as gas explosion, poisoning to happen occasionally without corresponding detection device real-time detection.

Description

Gas detector

Technical field

The utility model belongs to household safe gas technical field, is specifically related to gas detector.

Background technology

Domestic gas refers to artificial coal gas, natural gas and liquefied petroleum gas, though civilian artificial coal gas composition is different, but all Containing more carbon monoxide, it is well known that carbon monoxide is severe toxicity gas, and Healthy People is in the air containing carbon monoxide 1% Spasm within 10 minutes, will be produced, 30 minutes will be dead.Natural gas is being commonly called as of methane, and it plays very in our life Important role.Liquefied petroleum gas is typically stored in gas tank, transports and stores improper meeting and cause revealing.Generally, artificial coal gas, After natural gas and liquefied petroleum gas are due to a variety of causes leakage, when indoor fuel gas concentration exceedes LEL, meeting kindling material can occur Blast.Using during combustion gas, during the contingency such as the gas explosion that causes because of the reason such as gas leakage, waste gas, poisoning There is generation, but, still there is no family's combustion gas detection device at present, after family gas leakage, often there is safety of life and property Hidden danger.

Utility model content

The purpose of this utility model is: aim to provide gas detector, visits without corresponding in order to solve now current family gas leakage Survey the problem that device real-time detection causes the contingency such as gas explosion, poisoning to happen occasionally.

For realizing above-mentioned technical purpose, the technical solution adopted in the utility model is as follows: gas detector, including carbon monoxide passes Sensor, methane transducer, LPG gas sensor, central processing unit, wireless transport module, audible-visual annunciator and air valve, Described carbon monoxide transducer is chemical type sensor, and described methane transducer and LPG gas sensor are semi-conductor type Sensor, described carbon monoxide transducer is connected with the serial ports of central processing unit, described methane transducer and liquefied petroleum gas sensing The output of device is connected with the analog port of central processing unit, described central processing unit include A/D conversion, temperature compensator, Tabling look-up evaluation and data process, the serial ports output of described central processing unit is connected with the input that data are processed, described centre Reason device analog port output by A/D conversion with temperature compensator, table look-up evaluation and data process be sequentially connected with, described nothing The input of line transport module and output are processed with data respectively, air valve wireless connection, the output that described data are processed and sound The input of light crossing-signal connects.

Using the utility model of technique scheme, after powering on, carbon monoxide transducer is by the concentration information of carbon monoxide in environment Passing to central processing unit in real time, meanwhile, the concentration information of methane in environment is passed to central processing unit by methane transducer in real time, The concentration information of liquefied petroleum gas in environment is passed to central processing unit by LPG gas sensor in real time, methane concentration signal and LPG concentration signal forms data signal after A/D conversion, and central processing unit judges according to Temperature error model, Then methane and the correction of LPG concentration information are realized by temperature compensator, after revised information is by evaluation of tabling look-up Obtaining accurate concentration data value, then carbon monoxide, methane and LPG concentration data are delivered at data process Reason, when data process discovery concentration abnormality, on the one hand transmits wireless signal by wireless transport module air-supply valve, it is achieved air valve Emergency cut-off, on the other hand send alarm signal by audible-visual annunciator.Such structure designs, and can monitor combustion gas in real time Concentration, when concentration reaches the lower limit of setting value, by wireless transport module air-supply valve send shutdown signal, pass through sound simultaneously Light crossing-signal sends alarm signal, it is to avoid gas leakage causes the generation of the contingencies such as blast, poisoning, ensures the life of people And property safety.

Further, main frame, server and long-range APP, the output of described wireless transport module and the input of main frame are also included The input wired connection of wireless connection, the output of described main frame and server, the output of described server and long-range APP Input wireless connection.

Also include the input wireless connection of main frame, server and long-range APP, the output of described wireless transport module and main frame, The input wired connection of the output of described main frame and server, the input of the output of described server and long-range APP without Line connects, and such structure designs, and the gas data after data are processed transmits to main frame, just upper every 15 seconds in abnormal cases Reporting a secondary data to main frame, reporting once every 18 hours under normal circumstances, after data report main frame, main frame carries out whole bag, Then upload onto the server, when user needs to know current gas concentration, it is only necessary to refresh long-range APP interface, long-range APP Just can get new data from server and send a signal, even if family no one, user also is understood that air matter to home The situation of amount.

Further, described central processing unit is PIC18 series monolithic.

Described central processing unit is PIC18 series monolithic, and such structure designs, and the processing speed of data is faster, anti-dry Disturb ability higher.

Brief description

The utility model can be further illustrated by the nonlimiting examples that accompanying drawing is given；

Fig. 1 is the structural representation of the embodiment of the utility model gas detector.

Detailed description of the invention

In order to make those skilled in the art that the utility model may be better understood, below in conjunction with the accompanying drawings with embodiment to this practicality New technique scheme further illustrates.

As it is shown in figure 1, gas detector of the present utility model, including carbon monoxide transducer, methane transducer, liquefied petroleum Gas sensor, central processing unit, wireless transport module, audible-visual annunciator, air valve, main frame, server and long-range APP, one Carbonoxide sensor is chemical type sensor, and methane transducer and LPG gas sensor are semiconductor type sensor, centre Reason device is PIC18 series monolithic, and carbon monoxide transducer is connected with the serial ports of central processing unit, methane transducer and liquefaction stone The output of oil gas sensor is connected with the analog port of central processing unit, central processing unit include A/D conversion, temperature compensator, Tabling look-up evaluation and data process, the serial ports output of central processing unit is connected with the input that data are processed, the mould of central processing unit Intend port output by A/D conversion with temperature compensator, table look-up evaluation and data process be sequentially connected with, wireless transport module Input and output are processed with data respectively, air valve wireless connection, the output that data are processed and the input of audible-visual annunciator Connecting, the input wireless connection of the output of wireless transport module and main frame, the output of main frame has with the input of server Line connects, the input wireless connection of the output of server and long-range APP.

In the present embodiment, after powering on, the concentration information of carbon monoxide in environment is passed to centre by carbon monoxide transducer in real time Reason device, meanwhile, the concentration information of methane in environment is passed to central processing unit by methane transducer in real time, and liquefied petroleum gas senses The concentration information of liquefied petroleum gas in environment is passed to central processing unit, methane concentration signal and LPG concentration by device in real time Signal forms data signal after A/D conversion, and central processing unit judges according to Temperature error model, then passes through temperature Compensator realizes methane and the correction of LPG concentration information, and revised information is dense accurately by obtaining after evaluation of tabling look-up Degrees of data value, then carbon monoxide, methane and LPG concentration data are delivered to data and process, at data During the existing concentration abnormality of haircut, on the one hand transmit wireless signal by wireless transport module air-supply valve, it is achieved the emergency cut-off of air valve, On the other hand alarm signal is sent by audible-visual annunciator.

It is pointed out that the setting of main frame, server and long-range APP, primary concern is that, the gas number after data process According to transmission to main frame, just reported a secondary data to main frame every 15 seconds in abnormal cases, under normal circumstances on 18 hours Once, after data report main frame, main frame carries out whole bag to report, then uploads onto the server, when user needs to know current gas During concentration, it is only necessary to refresh long-range APP interface, long-range APP just can get new data from server and send a signal, Even if family no one, user also is understood that the situation of air quality to home.

In addition, central processing unit is PIC18 series monolithic, such structure designs, and the processing speed of data is faster, anti-dry Disturb ability higher.Actually, it is also possible to select other kinds of processor according to actual conditions.

The merely exemplary explanation of above-described embodiment principle of the present utility model and effect thereof, not for restriction the utility model.Any Above-described embodiment all can be modified under spirit and the scope of the present utility model or change by those skilled in the art. Therefore, all art have usually intellectual without departing from the spirit disclosed in the utility model and institute under technological thought All equivalences completing are modified or change, and must be covered by claim of the present utility model.

Claims

1. gas detector, it is characterised in that: include carbon monoxide transducer, methane transducer, LPG gas sensor, Central processing unit, wireless transport module, audible-visual annunciator and air valve, described carbon monoxide transducer is chemical type sensor, Described methane transducer and LPG gas sensor are semiconductor type sensor, and described carbon monoxide transducer is processed with central authorities The serial ports of device connects, and the output of described methane transducer and LPG gas sensor is connected with the analog port of central processing unit, Described central processing unit includes A/D conversion, temperature compensator, table look-up evaluation and data process, the string of described central processing unit Mouth output is connected with the input that data are processed, and the analog port output of described central processing unit is changed by A/D and temperature Compensator, evaluation and the data of tabling look-up process and are sequentially connected with, the input of described wireless transport module and output respectively with data at Reason, air valve wireless connection, the output that described data are processed is connected with the input of audible-visual annunciator.

2. gas detector according to claim 1, it is characterised in that: also include main frame, server and long-range APP, The output of described wireless transport module and the input wireless connection of main frame, the output of described main frame and the input of server The input wireless connection of wired connection, the output of described server and long-range APP.

3. gas detector according to claim 1 and 2, it is characterised in that: described central processing unit is PIC18 system Row single-chip microcomputer.