CN204287523U - A kind of weather monitoring instrument with dust concentration monitoring function - Google Patents
A kind of weather monitoring instrument with dust concentration monitoring function Download PDFInfo
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- CN204287523U CN204287523U CN201420796466.2U CN201420796466U CN204287523U CN 204287523 U CN204287523 U CN 204287523U CN 201420796466 U CN201420796466 U CN 201420796466U CN 204287523 U CN204287523 U CN 204287523U
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- electronic potentiometer
- chip microcomputer
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- detection sensors
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Abstract
The utility model discloses a kind of weather monitoring instrument with dust concentration monitoring function, comprise single-chip microcomputer, temperature-measuring module, moisture measurement module, barometric surveying module, measuring wind speed module, wind direction measurement module, clock module, data memory module, liquid crystal display and Independent keys; Also comprise dust detection sensors and electronic potentiometer.The utility model have circuit structure simple, with low cost, low in energy consumption, can portable use, and the advantage can monitored the various meteorologic parameters comprising dust concentration.
Description
Technical field
The utility model relates to a kind of weather monitoring instrument, and specifically a kind of weather monitoring instrument can monitored koniology concentration, belongs to observation and control technology field.
Background technology
The measurement of the meteorologic parameters such as temperature, humidity, air pressure, wind speed, wind direction plays a very important role in the fields such as daily life, agricultural, fishery, industry, forestry, navigation, the measurement of a lot of regional meteorologic parameter relies on Local Weather Report mostly,, weather forecast territorial scope is wider, the weather that cannot be accurate to zonule is measured, and it is higher to build observatory's cost.Therefore the small-sized weather monitoring instrument (possess that design cost is cheap, low-power consumption, the advantage such as portable) that the meteorologic parameter such as temperature, humidity, air pressure, wind speed, wind direction of zonule is measured on efficiency ground has very broad application prospect.In addition, small-sized weather monitoring instrument of much monitoring for territory, local cell meteorologic parameter of the prior art usually can only be measured and monitor temperature, humidity, air pressure, wind speed, the conventional meteorology parameters such as wind direction, but can not the dust concentration in air be monitored, and dust concentration data for current people industrial and agricultural production and life there is larger reference significance, therefore a kind of circuit structure is simple, with low cost, low in energy consumption, the weather monitoring instrument can monitored the various meteorologic parameters comprising dust concentration of the portable use of energy is required in prior art, have broad application prospects, also be a kind of developing direction of the weather monitoring device in regional area, namely be trend towards device miniaturization, function gradual perfection.
Utility model content
For prior art above shortcomings, the purpose of this utility model is: how to provide a kind of circuit structure simple, with low cost, low in energy consumption, can the weather monitoring instrument can monitored the various meteorologic parameters comprising dust concentration of portable use.
To achieve these goals, the utility model have employed following technical scheme.
There is a weather monitoring instrument for dust concentration monitoring function, comprise single-chip microcomputer, temperature-measuring module, moisture measurement module, barometric surveying module, measuring wind speed module, wind direction measurement module, clock module, data memory module, liquid crystal display and Independent keys; It is characterized in that: also comprise dust detection sensors and electronic potentiometer; The controlled end of described electronic potentiometer and the output terminal of single-chip microcomputer be connected, the high voltage end of electronic potentiometer is connected with positive source, the earth terminal of electronic potentiometer is connected to the ground, and the sliding end of electronic potentiometer is connected with the measuring accuracy control end of described dust detection sensors; The delivery outlet of described dust detection sensors is connected with the input port of single-chip microcomputer; Described dust detection sensors is DSM501 module.Further, described single-chip microcomputer adopts MSP430G2553 chip, and described electronic potentiometer is X9312 chip.
Compared to existing technology, the utility model tool has the following advantages: adopt DSM501 dust detection sensors module and electronic potentiometer to realize dust measuring ability in the utility model, for portable meteorological parameter monitor devises koniology Concentration Testing function, and the measuring accuracy control end of DSM501 dust detection sensors connects with the sliding end of electronic potentiometer, the delivery outlet of single-chip microcomputer is set in 27K Ω by the amendment electronic potentiometer resistance that transmits control signal to the controlled end of electronic potentiometer, 100K Ω and 0 Ω, tri-class, make DSM501 module can be operated under three measurement sensistivity, therefore compared to existing technology in for territory, local cell meteorologic parameter monitoring small-sized weather monitoring instrument usually can only measure and monitor temperature, humidity, air pressure, wind speed, the conventional meteorology parameters such as wind direction, but the present situation can not monitored the dust concentration in air is compared, it is simple that the utility model has circuit structure, with low cost, low in energy consumption, the portable use of energy, and the advantage can monitored the various meteorologic parameters comprising dust concentration.
Accompanying drawing explanation
Fig. 1 is circuit structure diagram of the present utility model;
Fig. 2 is dust detection sensors signal output waveform figure in the utility model;
Fig. 3 is that in the utility model, dust detection sensors outputs signal low pulsation rate and dust concentration number of particles graph of a relation;
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, there is a weather monitoring instrument for dust concentration monitoring function, comprise single-chip microcomputer, temperature-measuring module, moisture measurement module, barometric surveying module, measuring wind speed module, wind direction measurement module, clock module, data memory module, liquid crystal display and Independent keys; Wherein, temperature-measuring module, moisture measurement module, barometric surveying module, measuring wind speed module, wind direction measurement module, clock module, data memory module, liquid crystal display and Independent keys are all electrically connected with single-chip microcomputer.
Temperature-measuring module can adopt digital temperature sensor AD7416 chip to be that main chip realizes, AD7416 is a multi-functional temp sensor, inner employing 10 gradual approaching/number converters, the typical temperature transition time is 400 μ s, resolution can reach 0.25 DEG C, measurement range is-40 ~ 125 DEG C, and lowest power consumption can reach 1.2 μ W, adopts I
2c bus carries out data transmission.Low 3 equal ground connection of A0, A1, A2 of AD7416 chip universal serial bus address, its serial address is 48H; Its data pin SDA is connected with single-chip I/O mouth respectively by respective external pull-up resistor with clock pins SCL, and AD7416 chip passes through I
2c bus write control word, controls it and carries out temperature survey.All the other measurement modules (moisture measurement module, barometric surveying module, measuring wind speed module, wind direction measurement module) all adopt the conventional die of widespread use in prior art to design, and do not repeat them here.Clock module adopts conventional DS1302 chip realization, data memory module adopts E
2pROM, because storage data is more, selects storage area comparatively large, lower-cost AT24C256 reservoir, this E
2pROM has 32KB capacity, passes through I
2c bus is connected with single-chip microcomputer, realizes storage and the reading of data.Liquid crystal display and Independent keys select conventional design.
Dust detection sensors is DSM501 module, and electronic potentiometer is X9312 chip, and single-chip microcomputer adopts MSP430G2553 chip.DSM501 module one has 5 pin: the 1st pin is measuring accuracy control pin, and the 2nd pin is common output pin, and the 3rd pin is positive supply pin, and the 4th pin is the adjustable output pin of precision, and the 5th pin is power ground pin.Wherein, the 2nd pin and the 4th pin are all output pins, and the 2nd pin output sensitivity is presetting, and smallest particles Detection capability is 1 μm; 4th pin sensitivity adjusts by control pin (being namely the 1st pin), and be defaulted as 2.5 times of the 2nd pin, namely smallest particles Detection capability is 2.5 μm; Concrete, detect level by the smallest particles adding a resistance adjustable the 4th pin between pin and ground the 1st, the sensitivity of adjusting resistance value adjustable the 4th pin.Usually three sensitivity adjustment scopes are had:
(1) the measuring accuracy control end (being namely the 1st pin) of dust detection sensors is connected to the ground and connects, and now output sensitivity is more than 2.5 μm for giving tacit consent to sensitivity-smallest particles Detection capability.(2) arrange a precision adjusting resistance between the measuring accuracy control end (the 1st pin) of dust detection sensors and ground, the resistance of precision adjusting resistance is 100K Ω, and output sensitivity is half sensitivity-smallest particles Detection capability is more than 2 μm.(3) between the measuring accuracy control end (being namely the 1st pin) of dust detection sensors and ground, a precision adjusting resistance is set, the resistance of precision adjusting resistance is 27K Ω, and output sensitivity is 1 μm with the identical smallest particles Detection capability of the 2nd pin output sensitivity.In order to obtain sensitivity selection function flexibly, a digital regulation resistance that can also adopt controls measuring accuracy control pin (1 pin).Electronic potentiometer can select X9312 chip.
X9312 is 100 rank digital regulation resistances, and maximum value is 100K Ω, and this electronic potentiometer has following pin: " increase input pin
", " lifting input pin
", " hot end VH ", " cold end VL ", " hold VSS ", " sliding end VW " and " sheet selects input end
", wherein " increase input pin
", " lifting input pin
" be two controlled ends of electronic potentiometer.Physical circuit annexation is as follows: based on the above functional characteristics of DSM501 module, and two input ports of single-chip microcomputer are connected with the 4th pin with the 2nd pin of DSM501 module respectively.Two controlled ends of electronic potentiometer (increase input pin
lifting input pin
) all with the output terminal of single-chip microcomputer be connected, the high voltage end VH of electronic potentiometer is connected with positive source VDD, and the earth terminal VSS of electronic potentiometer is connected to the ground, and the sliding end VW of electronic potentiometer is connected with the measuring accuracy control pin of DSM501 module.Utility model works principle is as follows: DSM501 module adopts photoinduction principle to carry out dust concentration detection, its inside is provided with the component such as light emitting diode and optical detecting unit, after dust is inhaled into sensor under the effect of internal heater, the light that Refl-Luminous diode sends, be radiated on the sensor devices of optical detecting unit by the light reflected, optical detecting unit adopts the principle of particle counting to count, sensor assembly output signal is PWM pulse width modulated wave, and the low pulsation rate of PWM pulse width modulated wave is just corresponding with number of particles.Sensor assembly output signal exports from the 2nd pin of DSM501 module and the 4th pin.(see above in detail and describe) is concrete, as shown in Figure 2, if when air is pure air, outputs signal as permanent High level 4.5V, if there is dust particle in air, then outputs signal PWM pulse width modulated wave.In the total duration UT (30S) of metering, in PWM pulse width modulated wave, total duration of low level pulse is LT, and so low pulsation rate then can be expressed as RT=LT/UT × 100%.Fig. 3 is the curved line relation of population and low pulsation rate, the population of single-chip microcomputer corresponding to low pulsation rate just can obtain dust concentration data, the space size that the concrete population drawn is corresponding is 283ml, that is to say that dust concentration is the ratio (sensor assembly sensitivity is 15000/283ml) of number of particles and the 283ml obtained according to low pulsation rate.Measurement sensistivity is adjusted by following way: monolithic function controls electronic potentiometer X9312 chip and revises its resistance, concrete, increases input pin
triggered by negative edge, the direction making sliding end VW towards internal counter increase or reduction is moved by the negative edge that this pin occurs, lifting input pin
on logic level control the direction of electronic potentiometer sliding end VW movement; Increase input pin
with lifting input pin
signal provide by single-chip microcomputer, therefore single-chip microcomputer can realize revising the control of electronic potentiometer resistance, it is 27K Ω, 100K Ω and 0 Ω, tri-class that single-chip microcomputer can control electronic potentiometer resistance, make DSM501 module can be operated under three measurement sensistivity, the measurement output signal exporting different sensitivity from the 4th pin draws corresponding dust concentration value for single-chip microcomputer process.Dust concentration value can be shown by lcd screen, also can be stored in data-carrier store for calling backtracking.The measurement result of temperature-measuring module, moisture measurement module, barometric surveying module, measuring wind speed module and wind direction measurement module is shared the same light and can be shown by lcd screen, and being stored in for calling backtracking in data-carrier store, Independent keys is used for various control model and selects.
Finally illustrate, above embodiment is only in order to illustrate technical side of the present utility model.Case and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (2)
1. there is a weather monitoring instrument for dust concentration monitoring function, comprise single-chip microcomputer, temperature-measuring module, moisture measurement module, barometric surveying module, measuring wind speed module, wind direction measurement module, clock module, data memory module, liquid crystal display and Independent keys;
It is characterized in that: also comprise dust detection sensors and electronic potentiometer;
The controlled end of described electronic potentiometer and the output terminal of single-chip microcomputer be connected, the high voltage end of electronic potentiometer is connected with positive source, the earth terminal of electronic potentiometer is connected to the ground, and the sliding end of electronic potentiometer is connected with the measuring accuracy control end of described dust detection sensors;
The delivery outlet of described dust detection sensors is connected with the input port of single-chip microcomputer;
Described dust detection sensors is DSM501 module.
2. a kind of weather monitoring instrument with dust concentration monitoring function according to claim 1, is characterized in that: described single-chip microcomputer adopts MSP430G2553 chip, and described electronic potentiometer is X9312 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420796466.2U CN204287523U (en) | 2014-12-06 | 2014-12-06 | A kind of weather monitoring instrument with dust concentration monitoring function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420796466.2U CN204287523U (en) | 2014-12-06 | 2014-12-06 | A kind of weather monitoring instrument with dust concentration monitoring function |
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| Publication Number | Publication Date |
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| CN204287523U true CN204287523U (en) | 2015-04-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107121711A (en) * | 2017-05-11 | 2017-09-01 | 昆明理工大学 | A kind of meteorological real-time monitoring device of packaged type freeway traffic |
| CN107192649A (en) * | 2017-06-29 | 2017-09-22 | 苏州天键衡电子信息科技有限公司 | A kind of remote monitoring system detected for dust |
| CN107356504A (en) * | 2017-06-29 | 2017-11-17 | 苏州天键衡电子信息科技有限公司 | A kind of koniology concentration measuring apparatus |
-
2014
- 2014-12-06 CN CN201420796466.2U patent/CN204287523U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107121711A (en) * | 2017-05-11 | 2017-09-01 | 昆明理工大学 | A kind of meteorological real-time monitoring device of packaged type freeway traffic |
| CN107192649A (en) * | 2017-06-29 | 2017-09-22 | 苏州天键衡电子信息科技有限公司 | A kind of remote monitoring system detected for dust |
| CN107356504A (en) * | 2017-06-29 | 2017-11-17 | 苏州天键衡电子信息科技有限公司 | A kind of koniology concentration measuring apparatus |
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|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20171206 |