CN202305458U - Air quality detecting device - Google Patents
Air quality detecting device Download PDFInfo
- Publication number
- CN202305458U CN202305458U CN2011204169010U CN201120416901U CN202305458U CN 202305458 U CN202305458 U CN 202305458U CN 2011204169010 U CN2011204169010 U CN 2011204169010U CN 201120416901 U CN201120416901 U CN 201120416901U CN 202305458 U CN202305458 U CN 202305458U
- Authority
- CN
- China
- Prior art keywords
- air quality
- detection
- processing unit
- signal processing
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses an air quality detecting device. The air quality detecting device comprises an air detecting unit, a signal processing unit and a communication unit, wherein the air detecting unit is used for detecting the air quality and generating an air quality detecting signal; the signal processing unit is connected with the air detecting unit and used for performing analog-digital conversion on the air quality detecting signal; one end of the communication unit is connected with the signal processing unit, and the other end of the communication unit is connected with a USB (universal serial bus) port; and the communication unit is used for transmitting the air quality detecting signal subjected to the analog-digital conversion to peripheral equipment connected with the USB port. Through the USB port, an air detecting result is output to display equipment and the air quality is directly displayed, so that a user can know the air quality intuitively.
Description
Technical field
The utility model relates to a kind of Detection of Air Quality device.
Background technology
Follow growth in the living standard, people pay attention to belonging to the air quality of living environment all the more.Existing Detection of Air Quality device mainly comprises industrial and direct display type.Wherein, industrial Detection of Air Quality device converts the air quality that the gas detection probe is detected into can be identified digital signal, voltage signal and current signal through industrial transmitter.Industrial Detection of Air Quality device can't be used by vast unprofessional user, does not therefore possess the family expenses function.Directly display type Detection of Air Quality device directly shows the gas detection value for gas detection is module integrated in the circuit that possesses digital Presentation Function, and is easy to use.But directly display type Detection of Air Quality device needs the operation of configuration instruction book guides user, thereby and shows that numerical value needs the user to consult the data judgement air quality in the instructions, brings inconvenience thus.
The utility model content
In view of this, the purpose of the utility model is to provide a kind of Detection of Air Quality device, exports the air detection result to display device through USB port, directly demonstrates air quality, is convenient to the user and intuitively understands.
The Detection of Air Quality device that the utility model provides comprises:
Gas detection cell 101 is used to detect air quality and generates the Detection of Air Quality signal;
Signal processing unit 102 is connected with gas detection cell 101, is used for the Detection of Air Quality signal is carried out analog-to-digital conversion process;
Communication unit 103, one ends are connected with signal processing unit 102, and the other end connects USB port, is used for the Detection of Air Quality signal after the said analog to digital conversion is transferred to the external unit that is connected with USB.
By last, export the air detection result to display device through USB port, directly demonstrate air quality, be convenient to the user and intuitively understand.
Optional, said gas detection cell 101 comprises: temperature sensor, humidity sensor and/or air mass sensor.
By last, realize temperature, humidity and air quality in the air are detected.
Optional, said air mass sensor is a tin ash semiconductor air mass sensor.
By last, realize the Sensitive Detection of air quality.
Optional, said gas detection cell 101 also comprises:
Sensor port is connected between said sensor and the said signal processing unit 102, and its power pins is connected with the analog power port with the digital power port of said signal processing unit 102 respectively; Its analog signal transmission pin is connected with the input end of analog signal mouth of said signal processing unit 102; Its grounding pin is connected with ground wire; Series inductance between said digital power port and analog power port; The RC circuit that connects parallel connection between said analog signal transmission pin and the grounding pin.
By last, realize the Detection of Air Quality signal that sensor detected is passed to signal processing unit.
Optional, it is the ATMEGA8 chip that said signal processing unit 102 comprises model.
Optional, said signal processing unit 102 also comprises crystal oscillating circuit and the reset circuit that is connected with said chip.
Optional, also comprise duty indicating member 104, be connected with signal processing unit 102, be used to show the duty of Detection of Air Quality device.
Optional, said duty indicating member 104 comprises: the LED light emitting diode is connected in the pulse output end mouth of signal processing unit 102.
By last, can realize showing in real time the duty of Detection of Air Quality device.
Optional, also comprise alarm unit, be connected with signal processing unit 102;
Said signal processing unit 102 also is used for judging air quality according to the Detection of Air Quality signal.
By last, alarm unit is reported to the police when air quality is defective.
Description of drawings
Fig. 1 is the circuit theory diagrams of Detection of Air Quality device;
Fig. 2 is the physical circuit figure of Detection of Air Quality device.
Embodiment
Show the utility model schematic diagram like Fig. 1, comprised gas detection cell 101, signal processing unit 102, communication unit 103, duty indicating member 104.
Wherein, said gas detection cell 101 is used to detect the air quality of environment of living in and generates the Detection of Air Quality signal, comprises temperature sensor, humidity sensor and air mass sensor.Air mass sensor adopts tin ash semiconductor air mass sensor; Tin ash is the semiconductor material of N type conduction; When airborne gas absorption is surperficial to this sull, because electric charge is worn the clothes and caused the resistance of sull to change.The tin ash semiconductor gas sensor all has high sensitivity to various pollution source such as benzene,toluene,xylene, formaldehyde, particles, and the corresponding time is fast, can under extremely low power consumption situation, obtain high response characteristic.
Signal processing unit 102 is connected with gas detection cell 101, is used for judging air quality according to the Detection of Air Quality signal.In the present embodiment, it is the chip of ATMEGA8 that said signal processing unit 102 adopts model, and back literary composition repeats no more.Signal processing unit 102 carries out analog-to-digital conversion process with the Detection of Air Quality signal that is received; And call the air quality standard value that prestores in the internal register and judge; If judged result is that the air quality numerical value that is received is higher than the air quality standard value that prestores, then the civilian said buzzer siren in signal processing unit 102 output control signal control backs is reported to the police.
Communication unit 103 is connected with signal processing unit 102, is used for the Detection of Air Quality signal after the analog-to-digital conversion process is exported.Communication unit 103 is a USB port in the present embodiment, can be connected with the USB port that computing machine, mobile phone or other display equipment are mated thus to realize communication showing testing result.
Duty indicating member 104 is connected with signal processing unit 102, is used to show the duty of Detection of Air Quality device.Duty indicating member 104 is realized through relay indicating light.
In addition, also comprise alarm unit (not shown), be connected, when signal processing unit 102 judges that air quality is defective, report to the police with signal processing unit 102.
Wherein, said signal processing unit 102, communication unit 103 and duty indicating member 104 are integrated in the circuit board, and gas detection cell 101 is dismountable to be connected with signal processing unit 102.Circuit board outer setting housing, housing is provided with air hole, and air hole is arranged on the housing of gas detection cell 101 relevant positions.
Following reference is shown in Figure 2, and the circuit theory diagrams of Detection of Air Quality device are described.
Gas detection cell 101 realizes that through data detection circuit comprise sensor port, the one of which end is connected with said sensor, and the other end is connected to signal processing unit 102.Specifically; The power pins 1 of sensor is connected with analog power port AVCC port with the digital power port VCC of signal processing unit 102 respectively; Wherein, analog power port AVCC one end is connected with digital power port VCC through inductance L 1, and the other end connects first capacitor C, 2 back ground connection; The analog signal transmission pin 2 of sensor port is connected with the input end of analog signal mouth PC0 of signal processing unit 102; The grounding pin 3 of sensor port connects ground wire; In addition, between the analog signal transmission pin 2 and grounding pin 3 of sensor port, connect the RC circuit of parallel connection.
Communication unit 103 realizes that through the usb communication circuit comprise USB port, the one of which end is connected with the USB port that computing machine, mobile phone or other display equipment are mated, and the other end is connected to signal processing unit 102.Specifically, the power pins 1 of USB port is connected with the digital power port VCC of signal processing unit 102, supplies power to signal processing unit 102 through outside 5V power supply (VUSB); The grounding pin 4 of USB port connects ground wire; Signal transmission pin 2 is connected with the data transmission port PB0 of signal processing unit 102 through first resistance R 3; Signal transmission pin 3 is connected to the data transmission port PB1 and the external interrupt port INT0 of signal processing unit 102 respectively through second resistance R 4.
Duty indicating member 104 realizes that through the duty indicating circuit comprise LED light emitting diode D3, LED light emitting diode D3 is connected in the pulse output end mouth XCK of signal processing unit 102 through the 3rd resistance R 5.
Signal processing unit 102 is through comprising the circuit realization that model is the ATMEGA8 chip.Comprise crystal oscillating circuit and reset circuit.Wherein, the crystal oscillator two ends are connected with XTAL2 with the crystal oscillator port x TAL1 of signal processing unit 102 after connecting an electric capacity respectively in the crystal oscillating circuit.Reset circuit realizes that through pull-up resistor R1 pull-up resistor R1 one end is connected with external power supply, and the other end one tunnel is connected with the reseting port RESET port of signal processing unit 102, and another road connects second capacitor C, 3 back ground connection.
More excellent; But Detection of Air Quality device and computing machine that the utility model provided are connected to form the computing machine all-in-one; Calculate according to the Detection of Air Quality signal through computer software; Draw air quality index and show that according to air quality index the suggestion user improves the mode of air quality, for example the humidification or the ventilation etc. of windowing are repeated no more.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (9)
1. a Detection of Air Quality device is characterized in that, comprising:
Gas detection cell (101) is used to detect air quality and generates the Detection of Air Quality signal;
Signal processing unit (102) is connected with gas detection cell (101), is used for the Detection of Air Quality signal is carried out analog-to-digital conversion process;
Communication unit (103), an end is connected with signal processing unit (102), and the other end connects USB port, is used for the Detection of Air Quality signal after the said analog to digital conversion is transferred to the external unit that is connected with USB.
2. Detection of Air Quality device according to claim 1 is characterized in that, said gas detection cell (101) comprising: temperature sensor, humidity sensor and/or air mass sensor.
3. Detection of Air Quality device according to claim 2 is characterized in that, said air mass sensor is a tin ash semiconductor air mass sensor.
4. Detection of Air Quality device according to claim 2 is characterized in that, said gas detection cell (101) also comprises:
Sensor port is connected between said sensor and the said signal processing unit (102), and its power pins is connected with the analog power port with the digital power port of said signal processing unit (102) respectively; Its analog signal transmission pin is connected with the input end of analog signal mouth of said signal processing unit (102); Its grounding pin is connected with ground wire; Series inductance between said digital power port and analog power port; The RC circuit that connects parallel connection between said analog signal transmission pin and the grounding pin.
5. Detection of Air Quality device according to claim 1 is characterized in that, it is the ATMEGA8 chip that said signal processing unit (102) comprises model.
6. Detection of Air Quality device according to claim 5 is characterized in that, said signal processing unit (102) also comprises crystal oscillating circuit and the reset circuit that is connected with said chip.
7. Detection of Air Quality device according to claim 1 is characterized in that, also comprises duty indicating member (104), is connected with signal processing unit (102), is used to show the duty of Detection of Air Quality device.
8. Detection of Air Quality device according to claim 7 is characterized in that, said duty indicating member (104) comprising: the LED light emitting diode is connected in the pulse output end mouth of signal processing unit (102).
9. Detection of Air Quality device according to claim 1 is characterized in that, also comprises alarm unit, is connected with signal processing unit (102);
Said signal processing unit (102) also is used for judging air quality according to the Detection of Air Quality signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204169010U CN202305458U (en) | 2011-10-27 | 2011-10-27 | Air quality detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204169010U CN202305458U (en) | 2011-10-27 | 2011-10-27 | Air quality detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202305458U true CN202305458U (en) | 2012-07-04 |
Family
ID=46374330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204169010U Expired - Fee Related CN202305458U (en) | 2011-10-27 | 2011-10-27 | Air quality detecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202305458U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162743A (en) * | 2013-04-12 | 2013-06-19 | 核工业理化工程研究院 | Single-channel detection instrument based on digital signal processor (DSP) |
| CN104749224A (en) * | 2013-12-27 | 2015-07-01 | 深圳市戴维莱传感技术开发有限公司 | Air quality monitoring and sensing module |
| CN104897861A (en) * | 2015-06-17 | 2015-09-09 | 兰州大学 | Air quality detecting device |
-
2011
- 2011-10-27 CN CN2011204169010U patent/CN202305458U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162743A (en) * | 2013-04-12 | 2013-06-19 | 核工业理化工程研究院 | Single-channel detection instrument based on digital signal processor (DSP) |
| CN103162743B (en) * | 2013-04-12 | 2015-03-18 | 核工业理化工程研究院 | Single-channel detection instrument based on digital signal processor (DSP) |
| CN104749224A (en) * | 2013-12-27 | 2015-07-01 | 深圳市戴维莱传感技术开发有限公司 | Air quality monitoring and sensing module |
| CN104897861A (en) * | 2015-06-17 | 2015-09-09 | 兰州大学 | Air quality detecting device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202305458U (en) | Air quality detecting device | |
| CN203982173U (en) | Energy consumption of vehicles data collector | |
| CN207675600U (en) | A kind of intelligence high-precision dust sensor | |
| CN204202646U (en) | A kind of indoor air quality monitor | |
| CN104000323A (en) | Intelligent temperature measuring glove | |
| CN206470378U (en) | Power of computer room monitoring device | |
| CN202210074U (en) | Portable infrared absorption type methane detector | |
| CN203658883U (en) | Temperature and humidity monitoring system for power battery pack of electric vehicle | |
| CN209858601U (en) | Rotating speed measuring system based on Hall sensor | |
| CN206540801U (en) | A kind of easy air quality PM2.5 Concentration Testing instruments | |
| CN203376033U (en) | Portable on-line detector used for detecting gas meter | |
| CN202404002U (en) | Microcomputer digital dust testing device | |
| CN204407945U (en) | Charger for mobile phone | |
| CN203241550U (en) | SCM(single chip microcomputer)-based environment remote monitoring device | |
| CN103576078A (en) | Handheld digital integrated circuit parameter tester | |
| CN203311578U (en) | Smog detection alarm apparatus | |
| CN207051187U (en) | Point-type combustible gas detecting device based on infrared gas sensor | |
| CN207751529U (en) | Detection of Air Quality circuit | |
| CN206556694U (en) | A kind of multifunctional air quality detection means | |
| CN206258117U (en) | A kind of bicycle digital speed mileometer based on Hall sensor | |
| CN111190359A (en) | Logging parameter simulator | |
| CN204241602U (en) | A kind of Electronics and Information Engineering testing agency | |
| CN102411151A (en) | Device for measuring quantity of personal radioactive rays | |
| CN201152900Y (en) | Wind velocity and wind force automatic detection and display apparatus | |
| CN203759048U (en) | Motor torque and rotating speed measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20141027 |
|
| EXPY | Termination of patent right or utility model |