CN205593987U

CN205593987U - Formaldehyde detector

Info

Publication number: CN205593987U
Application number: CN201620300003.1U
Authority: CN
Inventors: 李海涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-04-11
Filing date: 2016-04-11
Publication date: 2016-09-21
Anticipated expiration: 2026-04-11

Abstract

The utility model discloses a formaldehyde detector, which comprises a housin, the front of casing is provided with first detection mouth, a display screen, reset button, the switching on and shutting down button, backlight button and alarm red light, the back of casing is provided with the second and detects the mouth, the battery case, USB interface and support frame, the inner chamber of casing still is provided with control circuit board, the last amplifier circuit module that is provided with of control circuit board, DA conversion module, the button module, the power modul, the display module, MCU processing ware and sensor, the sensor is by formaldehyde sensor, temperature and humidity sensor, the VOC sensor becomes with kilobit accuracy sensor group, this formaldehyde detector can carry out single -point and multiple spot according to user's selection and detect, and adopting import converter and kilobit accuracy sensor not only to detect speed, fast but also the accuracy is high, make things convenient for people's switch to use through being provided with key button simultaneously, the practicality is high, easy operation, convenient to carry.

Description

A kind of methylene oxide detecting instrument

Technical field

This utility model relates to Detection of Air Quality equipment technical field, is specially a kind of methylene oxide detecting instrument.

Background technology

At present, the instrument of detection formaldehyde in air is light splitting detector, is produced by the reaction of gas and reagent Raw color change, then read corresponding color value by special instrument, this method not only detects slowly, And whole flow process is got off nearly about 30 minutes；Additionally the operation of light splitting detector needs professional to operate Using, layman operates the value that may detect and is forbidden；Secondly at the concentration skewness of indoor formaldehyde Even, light splitting detector can only the content of formaldehyde of fixing point between ell, it is impossible to detect in real time, and certainty of measurement Low, minimum resolution only has 0.01mg/m³。

Utility model content

The purpose of this utility model is to provide a kind of methylene oxide detecting instrument, to solve to carry in above-mentioned background technology The problem gone out.

For achieving the above object, this utility model following technical scheme of offer: a kind of methylene oxide detecting instrument, bag Include housing, the front of described housing be provided with the first detection mouth, display screen, SR, switching on and shutting down by Button, backlight button and alarm red light, the back side of housing is provided with the second detection mouth, battery case, USB connect Mouth and bracing frame, the inner chamber of housing is additionally provided with control circuit plate；It is provided with on described control circuit plate and puts Big circuit module, D/A conversion module, key-press module, power module, display module, processor of single chip computer And sensor；Described amplification circuit module, D/A conversion module, key-press module, power module, display mould Block and sensor are all electrically connected on processor of single chip computer；The outfan of described key-press module is respectively with multiple The input of position button, switching on and shutting down button and backlight button is electrically connected with, and the outfan of power module divides Other and battery case and USB interface input is electrically connected with, and the outfan of display module is defeated with display screen Enter end to be electrically connected with；Described sensor is by formaldehyde sensor, Temperature Humidity Sensor, VOC sensor and kilobit Degree of accuracy sensor forms.

Preferably, described display screen uses LCDs, and display pattern is that LCD backlight shows.

Preferably, the detectable temperature range of described Temperature Humidity Sensor is-15 DEG C～+50 DEG C, can detect Humidity range be 15%HR～90%HR.

Preferably, the size of described housing is 127mm*54mm*18mm, can detect formaldehyde scope be 0～ 9.999mg/m³, monitoring domain of walker is-0.002～+0.002.

Preferably, the battery size of described battery case is No. 7 alkaline batteries, and the supply voltage of USB interface is 5V。

Compared with prior art, the beneficial effects of the utility model are: this methylene oxide detecting instrument, from charged pool Box electric supply installation, can carry out single-point and multiple spot detection to indoor and outdoor content of formaldehyde, and size of product is little, It is convenient for carrying, and the numeral and the types of facial makeup in Beijing operas by LCDs is expressed one's feelings, and can directly read number at any time According to, it is to avoid need professional's just operable trouble；Secondly, this device uses import conversion Device and kilobit degree of accuracy sensor, not only detection speed is fast, and degree of accuracy can reach thousand points of positions, has The safety problem of the personnel that ensured of effect；It addition, be provided by button, we can at any time with Be controlled, easy to use.

Accompanying drawing explanation

Fig. 1 is overall structure schematic diagram of the present utility model；

Fig. 2 is structure schematic diagram of the present utility model；

Fig. 3 is that network of the present utility model controls connection figure.

In figure: 1 housing；11 first detection mouths；12 display screens；13 SRs；14 switching on and shutting down buttons； 15 backlight buttons；16 alarm red lights；2 second detection mouths；3 battery cases；4 USB interface；5 support Frame；6 control circuit plates；61 amplification circuit module；62 D/A conversion module；63 key-press modules；64 electricity Source module；65 display modules；66 processor of single chip computer；67 sensors；671 formaldehyde sensors；672 Temperature Humidity Sensor；673 VOC sensors；674 kilobit degree of accuracy sensors.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, to the technology in this utility model embodiment Scheme is clearly and completely described, it is clear that described embodiment is only this utility model one Divide embodiment rather than whole embodiments.Based on the embodiment in this utility model, this area is common The every other embodiment that technical staff is obtained under not making creative work premise, broadly falls into this The scope of utility model protection.

Referring to Fig. 1-3, a kind of technical scheme of this utility model offer: a kind of methylene oxide detecting instrument, including shell Body 1, the front of housing 1 is provided with the first detection mouth 11, display screen 12, SR 13, switching on and shutting down Button 14, backlight button 15 and alarm red light 16, the back side of housing 1 be provided with the second detection mouth 2, Battery case 3, USB interface 4 and bracing frame 5, display screen 12 uses LCDs, not only numeral Display resolution is high, and shows that pattern is that LCD backlight shows, it is not necessary to lighting screen can also read Get data, save the energy consumption of battery；Connect by the battery case 3 and USB arranged on methylene oxide detecting instrument Mouth 4, can make us under the different detected status of single-point or multiple spot, be powered voluntarily, battery case 3 Battery size be No. 7 alkaline batteries, the supply voltage of USB interface 4 is 5V, is all during we live Conventional power supply mode, conveniently chooses；It is connected for collapsible between bracing frame 5 with housing 1, is using The when that methylene oxide detecting instrument carrying out single-point detection, directly can be fixed on the ground, no by bracing frame 5 Need artificially with hand-held detection；Inner chamber at housing 1 is additionally provided with control circuit plate 6, control circuit plate Be provided with on 6 amplification circuit module 61, D/A conversion module 62, key-press module 63, power module 64, Display module 65, processor of single chip computer 66 and sensor 67；Amplification circuit module 61, D/A conversion module 62, key-press module 63, power module 64, display module 65 and sensor 67 are all electrically connected at monolithic On machine processor 66；The outfan of key-press module 63 respectively with SR 13, switching on and shutting down button 14 and The input of backlight button 15 is electrically connected with, the outfan of power module 64 respectively with battery case 3 and The input of USB interface 4 is electrically connected with, and the outfan of display module 65 is electric with the input of display screen 12 Property connect；Sensor 67 is by formaldehyde sensor 671, Temperature Humidity Sensor 672, VOC sensor 673 and Kilobit degree of accuracy sensor 674 forms；The detectable temperature range of Temperature Humidity Sensor 672 be-15 DEG C～ + 50 DEG C, detectable humidity range is 15%～90%HR, when we are placed on suitable ring methylene oxide detecting instrument Under border, by the first detection mouth 11 and the second detection mouth 2 detection to the current intelligence of surrounding air environment, Gathered signal by formaldehyde sensor 671, after being amplified by amplification circuit module 61, be transferred to DA conversion Module 62, after D/A conversion module 62 converts, transmits a signal to processor of single chip computer 66；Meanwhile, The processor of single chip computer 66 Temperature Humidity Sensor 672, VOC sensor 673 and kilobit to receiving is accurate The signal of degree sensor 674 carries out Treatment Analysis, is then transferred to display module 65, and display module 65 is again By display screen 12 video data；It is 0～9.999mg/m that this methylene oxide detecting instrument can detect formaldehyde scope³, and Degree of accuracy can reach thousand points of positions, and degree of accuracy is high, by being provided with two kinds of types of facial makeup in Beijing operas at display screen output port, Smiling face represents that detection is good, and face of crying then indicates pollution, if alarm red light 16 flashes, represents it is severe Polluting, content of formaldehyde is more than 1mg/m³, it should draw attention, forbid that personnel live；It addition, by pressing Key button can control the switching on and shutting down of methylene oxide detecting instrument, the clearing of data and the selection of backlight, practical valency Value height, simple to operate, easy to carry.

Embodiment the most of the present utility model, for the ordinary skill people of this area For Yuan, it is possible to understand that can be real to these in the case of without departing from principle of the present utility model and spirit Executing example to carry out multiple change, revise, replace and modification, scope of the present utility model is by claims And equivalent limits.

Claims

1. a methylene oxide detecting instrument, including housing (1), it is characterised in that: described housing (1) is just Face be provided with the first detection mouth (11), display screen (12), SR (13), switching on and shutting down button (14), Backlight button (15) and alarm red light (16), the back side of housing (1) be provided with the second detection mouth (2), Battery case (3), USB interface (4) and bracing frame (5), the inner chamber of housing (1) is additionally provided with control electricity Road plate (6)；It is provided with amplification circuit module (61), D/A conversion module on described control circuit plate (6) (62), key-press module (63), power module (64), display module (65), processor of single chip computer (66) With sensor (67)；Described amplification circuit module (61), D/A conversion module (62), key-press module (63), Power module (64), display module (65) and sensor (67) are all electrically connected at processor of single chip computer (66) on；The outfan of described key-press module (63) respectively with SR (13), switching on and shutting down button (14) and backlight button (15) input be electrically connected with, the outfan of power module (64) divides Not with the input electric connection of battery case (3) and USB interface (4), display module (65) defeated Go out the input electric connection of end and display screen (12)；Described sensor (67) by formaldehyde sensor (671), Temperature Humidity Sensor (672), VOC sensor (673) and kilobit degree of accuracy sensor (674) composition.

A kind of methylene oxide detecting instrument the most according to claim 1, it is characterised in that: described display screen (12) Using LCDs, display pattern is that LCD backlight shows.

A kind of methylene oxide detecting instrument the most according to claim 1, it is characterised in that: described humiture passes Sensor (672) detectable temperature range is-15 DEG C～+50 DEG C, detectable humidity range be 15%HR～ 90%HR.

A kind of methylene oxide detecting instrument the most according to claim 1, it is characterised in that: described housing (1) Size be 127mm*54mm*18mm, can detect formaldehyde scope is 0～9.999mg/m³, monitor floating model Enclose for-0.002～+0.002.

A kind of methylene oxide detecting instrument the most according to claim 1, it is characterised in that: described battery case (3) Battery size be No. 7 alkaline batteries, the supply voltage of USB interface (4) is 5V.