CN204202646U - A kind of indoor air quality monitor - Google Patents
A kind of indoor air quality monitor Download PDFInfo
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- CN204202646U CN204202646U CN201420463406.9U CN201420463406U CN204202646U CN 204202646 U CN204202646 U CN 204202646U CN 201420463406 U CN201420463406 U CN 201420463406U CN 204202646 U CN204202646 U CN 204202646U
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- temperature humidity
- dust
- air quality
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Abstract
The utility model provides a kind of indoor air quality monitor, and this monitor comprises: for the Temperature Humidity Sensor of temperature and humidity in sensing chamber; For detecting the air contaminant sensor of indoor pollutant; For detecting the dust sensor of house dust; Warning device; Control device, be connected with described Temperature Humidity Sensor, air contaminant sensor, dust sensor and warning device signal respectively, and when the signal that described Temperature Humidity Sensor, air contaminant sensor and dust sensor detect exceedes the setting value of its correspondence, control described warning device and give the alarm; Display device, is connected with described control device signal, and for showing the signal that described Temperature Humidity Sensor, air contaminant sensor and dust sensor detect.The utility model beneficial effect is as follows: carry out real-time monitoring to the humiture of room air, PM2.5 and the gas with harmfulness, and report to the police.
Description
Technical field
The utility model relates to the technical field of air quality monitoring, refers more particularly to a kind of indoor air quality monitor.
Background technology
The most of the time of forefathers, all in indoor activity, due to the impact of environmental factor or human factor, makes indoor air quality constantly decline.But, the change of air quality cannot be perceived owing to being in indoor people, health slowly receive harm.
Utility model content
The utility model provides a kind of indoor air quality monitor, in order to improve the monitoring effect of room air.
The utility model provides a kind of indoor air quality monitor, and this monitor comprises:
For the Temperature Humidity Sensor of temperature and humidity in sensing chamber;
For detecting the air contaminant sensor of indoor pollutant;
For detecting the dust sensor of house dust;
Warning device;
Control device, be connected with described Temperature Humidity Sensor, air contaminant sensor, dust sensor and warning device signal respectively, and when the signal that described Temperature Humidity Sensor, air contaminant sensor and dust sensor detect exceedes the setting value of its correspondence, control described warning device and give the alarm;
Display device, is connected with described control device signal, and for showing the signal that described Temperature Humidity Sensor, air contaminant sensor and dust sensor detect.
Preferably, described warning device is light alarming device.
Preferably, described display device is LCD display device.
Preferably, the input media be connected with described control device signal is also comprised.
Preferably, described input media is keyboard.
The utility model beneficial effect is as follows: carry out real-time monitoring to the humiture of room air, PM2.5 and the gas with harmfulness, and report to the police.
Accompanying drawing explanation
The structured flowchart of the indoor air quality monitor that Fig. 1 provides for the utility model embodiment;
The electrical connection diagram of the control device that Fig. 2 provides for the utility model embodiment;
The electrical connection diagram of the Temperature Humidity Sensor that Fig. 3 provides for the utility model embodiment;
The electrical connection diagram of the dust sensor that Fig. 4 provides for the utility model embodiment;
The electrical connection diagram of the air contaminant sensor that Fig. 5 provides for the utility model embodiment;
The electrical connection diagram of the display device that Fig. 6 provides for the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
As shown in Figure 1, the structured flowchart of indoor air quality monitor that provides for the utility model embodiment of Fig. 1;
The utility model provides a kind of indoor air quality monitor, and this monitor comprises:
For the Temperature Humidity Sensor of temperature and humidity in sensing chamber;
For detecting the air contaminant sensor of indoor pollutant;
For detecting the dust sensor of house dust;
Warning device;
Control device, be connected with described Temperature Humidity Sensor, air contaminant sensor, dust sensor and warning device signal respectively, and when the signal that described Temperature Humidity Sensor, air contaminant sensor and dust sensor detect exceedes the setting value of its correspondence, control described warning device and give the alarm;
Display device, is connected with described control device signal, and for showing the signal that described Temperature Humidity Sensor, air contaminant sensor and dust sensor detect.
In the above-described embodiments, monitored by Temperature Humidity Sensor, air contaminant sensor and the dust sensor air to indoor, the gas achieving the humiture to room air, PM2.5 and have harmfulness carries out real-time monitoring, and reports to the police.
Concrete, control device adopts macrocrystalline company STC90C58AD single-chip microcomputer, Temperature Humidity Sensor mainly adopts the SHT11 digital transducer of flourishing age auspicious grace (Sensirion) company to carry out humiture collection, direct use digital integration Temperature Humidity Sensor, its integrated level is high, stable and reliable for performance, and is single wire transmission, circuit is simple, and shared I/O is few.Air contaminant sensor mainly adopts the TP-4 air contaminant sensor of Shenzhen Dai Weilai company to gather, dust sensor adopts Korea S SYHITECH patented product pellet sensor DSM501 to gather, display section uses 1602 liquid crystal as display, 5V power acquisition 7805 voltage stabilizing chip manufacturings.
As shown in Figure 2, control device adopts STC90C58AD single-chip microcomputer, STC90C58AD be a kind of built-in A the single-chip microcomputer of D conversion, be the upgraded version of very popular STC89 series.Have superpower antistatic, superpower anti-interference, antijamming capability is stronger than 89 series, and reset effect is better, directly replaces 89 series, and inner integrated MAX810 Special reset circuit, 4 road PWM, 8 tunnels are ten bit A/D converters at a high speed.The pin arrangements of STC90C58AD single-chip microcomputer and basic peripheral circuit are as shown in Figure 2.Diagram basic circuit mainly comprises microcontroller power supply circuit, crystal oscillating circuit, electrification reset and key reset circuit.
As shown in Figure 3, the Temperature Humidity Sensor a digital hygro sensor chip SHT11 that selects Sensirion company of Switzerland to release.The function of pin is as follows: pin 1 and 4: signal ground and power supply, and operating voltage range is 2.4 ~ 5.5 V; Pin 2 and 3: two-wire serial digital interface, DATA data line connects the P3.1/TXD mouth of single-chip microcomputer: serial data transmitting terminal, and SCK is the P3.0/RXD mouth that clock line connects single-chip microcomputer: serial data receiving end; Pin 5 ~ 8: do not connect.SHT11 is visited by two wires digital serial interface, so hardware interface circuit is very simple.The place that should be noted that is: DATA data line needs external pull-up resistor, and clock line SCK is used for communication synchronization between microprocessor and SHT11, because interface contains complete static logic, so to the not requirement of SCK low-limit frequency; When operating voltage is higher than 4.5V, SCK frequency is up to 10 MHz, and when operating voltage is lower than 4.5 V, SCK highest frequency is then 1 MHz.
As shown in Figure 4, dust sensor adopts the patented product DSM501 of Korea S SYHITECH.It adopts particle counting principle, and can detect the particle of diameter more than 1 μm, internal heater can suck air to be measured automatically.It has the advantages that volume is little, lightweight, easily install and use.
DSM501 adopts PWM width modulation to export.When there being particle, export the low level of about 0.7 V; The high level of about 4.5V is exported, as shown in Figure 3 during air cleaning to be measured.DSM501 dust sensor has 5 pins, and wherein 3,5 pins are VDD-to-VSSs, and its operating voltage range is direct current 5.0 V scholar 0.5 V; 2 pin are common output pin, sensitively redeem oneself presetting, and smallest particles Detection capability is 1 μm; 1 pin is adjustable output pin, and sensitivity adjusts by controlling pin 4, and be defaulted as 2.5 times of 2 pins, namely smallest particles Detection capability is 2. 5 μm; Add a resistance between 4 pins and GND, the smallest particles of adjustable 1 pin detects level, and not giving tacit consent to sensitivity during connecting resistance is 2. 5 μm; When connecing 100k Ω resistance, sensitivity is 2 μm; When connecing 27K Ω resistance, sensitivity is 1 μm.
As shown in Figure 5, air contaminant sensor adopts TP-4 type sensor to low concentration air pollutants as gas-sensitive such as hydrogen, hydrocarbon, alcohol, carbon monoxide, cigarette, benzene bottoms.Vs is sensor signal input port, and gas sensor, the output voltage collected, is transported on P1.0 port, and this port is an analog to digital conversion port.After system electrification, need to carry out initialization desorption manipulation to sensor, during desorption, need generation PWM signal waveform.The generation of this waveform is realized by P3.4 mouth Timer/Counter 0 port of STC90C58AD.Produce the desorption signal of a 100HZ dutycycle 0.2, desorption is after 2 minutes, and stop desorption making PWM=0, such sensor just can normally work.
As shown in Figure 6, display device adopts LCD display device, and concrete selects LCD12864 liquid crystal display, and this liquid crystal wiring diagram as shown in Figure 6.Wherein DB0 ~ DB7 is internal data bus, receives on P0 port; RS is that signal selected by internal function register, receives on P2.6 port; R/W is read/write operation control signal, receives on P2.3 port; It is enable that E is that sheet selects, and receives on P2.7 port; CS1 sheet selects signal, selects front 64 row, receive on P2.4 port during low level; CS2 sheet selects signal, and after selecting during low level, 64 row, receive on P2.5 port.
Warning device is wherein light alarming device.
In addition, this monitor also comprises the input media be connected with described control device signal.Concrete, this input media is keyboard.
Can be found out by foregoing description, the monitor that the present embodiment provides can realize:
1, temperature humidity shows automatically, and humiture warning upper and lower limit can be regulated at any time by button, and (minimum theoretical displays temperature-40 is spent, and maximum temperature shows 99 degree in theory; Humidity range 0-100R%).
2, when there being humiture to report to the police (default temperature upper limit alarm value is 38.0 DEG C, and humidity is 75.0R%), chimes of doom can be closed by button or open, and this operation can show from liquid crystal.
3, display is carried out as hydrogen, hydrocarbon, alcohol, carbon monoxide, cigarette, benzene bottoms etc. to low concentration air pollutants, exceed the upper limit and namely can report to the police.
4, more than 1 μm particle can be detected, as cigarette, house dust, mould, pollen, spore etc., be equivalent to the monitoring of present said PM2.5, exceed higher limit, namely report to the police and Absorbable rod particle value is shown.
Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (5)
1. an indoor air quality monitor, is characterized in that, comprising: for the Temperature Humidity Sensor of temperature and humidity in sensing chamber, and described Temperature Humidity Sensor is digital transducer; For detecting the air contaminant sensor of indoor pollutant; For detecting the dust sensor of house dust; Warning device; Control device, be connected with described Temperature Humidity Sensor, air contaminant sensor, dust sensor and warning device signal respectively, and when the signal that described Temperature Humidity Sensor, air contaminant sensor and dust sensor detect exceedes the setting value of its correspondence, control described warning device and give the alarm; Display device, is connected with described control device signal, and for showing the signal that described Temperature Humidity Sensor, air contaminant sensor and dust sensor detect.
2. indoor air quality monitor as claimed in claim 1, it is characterized in that, described warning device is light alarming device.
3. indoor air quality monitor as claimed in claim 1, it is characterized in that, described display device is LCD display device.
4. indoor air quality monitor as claimed in claim 1, is characterized in that, also comprise the input media be connected with described control device signal.
5. indoor air quality monitor as claimed in claim 4, it is characterized in that, described input media is keyboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420463406.9U CN204202646U (en) | 2014-08-18 | 2014-08-18 | A kind of indoor air quality monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420463406.9U CN204202646U (en) | 2014-08-18 | 2014-08-18 | A kind of indoor air quality monitor |
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| Publication Number | Publication Date |
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| CN204202646U true CN204202646U (en) | 2015-03-11 |
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| CN201420463406.9U Expired - Fee Related CN204202646U (en) | 2014-08-18 | 2014-08-18 | A kind of indoor air quality monitor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677428A (en) * | 2015-03-25 | 2015-06-03 | 徐新 | Multifunctional indoor air detection device |
| CN104897532A (en) * | 2015-05-20 | 2015-09-09 | 安庆师范学院 | Portable PM2.5 detector and control method thereof |
| CN105181020A (en) * | 2015-09-17 | 2015-12-23 | 周榘 | Multifunctional environment tester |
| CN107045042A (en) * | 2017-02-28 | 2017-08-15 | 福建中金在线信息科技有限公司 | A kind of air detection method and device |
-
2014
- 2014-08-18 CN CN201420463406.9U patent/CN204202646U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677428A (en) * | 2015-03-25 | 2015-06-03 | 徐新 | Multifunctional indoor air detection device |
| CN104897532A (en) * | 2015-05-20 | 2015-09-09 | 安庆师范学院 | Portable PM2.5 detector and control method thereof |
| CN105181020A (en) * | 2015-09-17 | 2015-12-23 | 周榘 | Multifunctional environment tester |
| CN107045042A (en) * | 2017-02-28 | 2017-08-15 | 福建中金在线信息科技有限公司 | A kind of air detection method and device |
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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: 20150311 Termination date: 20150818 |
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| EXPY | Termination of patent right or utility model |