CN203786032U - Carbon dioxide gas detector - Google Patents
Carbon dioxide gas detector Download PDFInfo
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- CN203786032U CN203786032U CN201420136751.1U CN201420136751U CN203786032U CN 203786032 U CN203786032 U CN 203786032U CN 201420136751 U CN201420136751 U CN 201420136751U CN 203786032 U CN203786032 U CN 203786032U
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- carbon dioxide
- chip
- stable pressure
- accurate source
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a carbon dioxide gas detector. The carbon dioxide gas detector comprises a singlechip, a power supply, an audible and visual alarm, a clock chip, a data storage, an A/D (analog to digital) converter, an infrared sensor, a voltage stabilizing circuit and an I/O (input/output) expanding chip, wherein the audible and visual alarm, the clock chip, the data storage, the I/O expanding chip and the A/D converter are all connected with the singlechip; the A/D converter is also connected with the infrared sensor; the power supply is connected with the voltage stabilizing circuit; the I/O expanding chip is also connected with a keyboard and a printer. According to the carbon dioxide gas detector disclosed by the utility model, the infrared sensor can detect the situation of carbon dioxide in a greenhouse accurately, and can supply or release gases in the greenhouse timely, so that the carbon dioxide content in the greenhouse can be maximal, and the yield of vegetables is increased.
Description
Technical field
The utility model relates to field of gas detection, is specifically related to carbon dioxide detector.
Background technology
Planting vegetable in greenhouse is a kind of more common technology, and it has good heat-insulating property, and it is loved by the people, because all can have at any time the vegetables of anti-season.In the ordinary course of things, it is main structural framework that booth vegetable all adopts bamboo and steel, then covers last layer or multi-layer heat preserving plastic sheeting in the above, and such easy structure just produces a complete greenhouse space.Plastic sheeting can effectively prevent that the carbon dioxide producing in vegetable growth process runs off, to reach the heat insulation effect needing in booth.An importance that wherein affects booth vegetable output is exactly rationally to utilize canopy gas, regulation and control humiture.Booth vegetable, in planting process, due to airtight in booth, easily produces some objectionable impuritiess, has damaged the speed of growth of vegetables.Therefore, correctly control canopy gas, and rationally use canopy gas.Vegetables in booth comparatively lack carbon dioxide in the morning, should suitably supplement CO gas fertilizer, promote the growth of vegetables.When noon, temperature was higher, suitably open ventilating opening, take a breath, avoid harmful gas injury vegetables.The gas content of measuring in booth now mainly detects by traditional PH test paper, and testing result is inaccurate also cumbersome.
Utility model content
The utility model has overcome the deficiencies in the prior art, carbon dioxide detector is provided, can accurately detect the situation of carbon dioxide in booth by infrared sensor, and in time the gas in booth is supplemented or discharge, make to reach best carbon dioxide content in booth, improve the output of vegetables.
For solving above-mentioned technical matters, the utility model is by the following technical solutions: carbon dioxide detector, comprise single-chip microcomputer, power supply, audible-visual annunciator, clock chip, data-carrier store, A/D converter, infrared sensor, mu balanced circuit and I/O extended chip, described audible-visual annunciator, clock chip, data-carrier store, mu balanced circuit, I/O extended chip and A/D converter are all connected single-chip microcomputer; Described A/D converter also connects infrared sensor; Described power supply connects mu balanced circuit; On described I/O extended chip, also connect keyboard and printer.The model of infrared sensor is wherein LHI778 or KP506B, and the model of audible-visual annunciator is LTE-5101J, and the model of data-carrier store is EEPROM AT24C02, and I/O extended chip model is GM8164.
Described mu balanced circuit is adjustable mu balanced circuit, comprise resistance R 1, resistance R 2, resistance R 3 and controllable accurate source of stable pressure C, the negative electrode K of controllable accurate source of stable pressure C wherein and with reference to contact resistance R2 between utmost point R, contact resistance R3 between the reference utmost point R of controllable accurate source of stable pressure C and anode A, also contact resistance R1 of the negative electrode of controllable accurate source of stable pressure C, between the anode A of resistance R 1 and controllable accurate source of stable pressure C, being power input, is power output end between the negative electrode K of controllable accurate source of stable pressure C and anode A.
The model of controllable accurate source of stable pressure C is TL431, and wherein mu balanced circuit two output end voltages are 2.5(R2+R3)/R3 volt, can change output reference voltage size if change the resistance of R2.The size of R2 and the R3 as required size of reference voltage arranges, and R1 is mainly used in dividing potential drop protection controllable accurate source of stable pressure C.
The model of described controllable accurate source of stable pressure C is TL431.
On described single-chip microcomputer, also connect LCD liquid crystal display.
The model of described clock chip is DS1307.
Described single-chip microcomputer model is AT89S51.
Compared with prior art, the beneficial effects of the utility model are:
1, the utility model by infrared sensor can Measurement accuracy booth vegetable in carbon dioxide content, and in time the gas in booth is supplemented or discharge, make to reach in booth best carbon dioxide content, improve the output of vegetables, the method is simple and practical, saves in the past PH test paper and measures inaccurate and measure loaded down with trivial details defect.
2, the utility model in power supply after mu balanced circuit, pass to again single-chip microcomputer, ensure the stable of service voltage, extend the serviceable life of single-chip microcomputer, the TL431 wherein using in mu balanced circuit is controllable accurate source of stable pressure, its output voltage just can be set to 2.5V to any value within the scope of 36V arbitrarily with two resistance, uses more flexible.
Brief description of the drawings
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is the mu balanced circuit figure in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further elaborated, embodiment of the present utility model is not limited to this.
Embodiment:
As shown in Figure 1-2, the utility model comprises single-chip microcomputer, power supply, audible-visual annunciator, clock chip, data-carrier store, A/D converter, infrared sensor, mu balanced circuit and I/O extended chip, on single-chip microcomputer, also connect LCD liquid crystal display, the model of clock chip is DS1307, and single-chip microcomputer model is AT89S51.
Audible-visual annunciator, clock chip, data-carrier store, mu balanced circuit, I/O extended chip and the A/D converter of the present embodiment are all connected single-chip microcomputer; A/D converter also connects infrared sensor; Power supply connects mu balanced circuit; On I/O extended chip, also connect keyboard and printer.The mu balanced circuit of this example is adjustable mu balanced circuit, comprise resistance R 1, resistance R 2, resistance R 3 and controllable accurate source of stable pressure C, the negative electrode K of controllable accurate source of stable pressure C wherein and with reference to contact resistance R2 between utmost point R, contact resistance R3 between the reference utmost point R of controllable accurate source of stable pressure C and anode A, also contact resistance R1 of the negative electrode of controllable accurate source of stable pressure C, between the anode A of resistance R 1 and controllable accurate source of stable pressure C, it is power input, between the negative electrode K of controllable accurate source of stable pressure C and anode A, be power output end, the model of controllable accurate source of stable pressure C is TL431.
The model of infrared sensor is wherein LHI778 or KP506B, and the model of audible-visual annunciator is LTE-5101J, and the model of data-carrier store is EEPROM AT24C02, and I/O extended chip model is GM8164.The model of controllable accurate source of stable pressure C is TL431, and wherein mu balanced circuit two output end voltages are 2.5(R2+R3)/R3 volt, can change output reference voltage size if change the resistance of R2.The size of R2 and the R3 as required size of reference voltage arranges, and R1 is mainly used in dividing potential drop protection controllable accurate source of stable pressure C.
The carbon dioxide situation in booth can accurately be detected and by A/D converter, information be passed to single-chip microcomputer by infrared sensor, single-chip microcomputer is stored and is passed to LCD liquid crystal display and shows to data, the too high audible-visual annunciator of carbon dioxide content will sounding, now can discharge and make to reach in booth best carbon dioxide content the gas in booth, promote the photosynthesis of vegetables, improve the output of vegetables, the method is simple and practical, saves in the past PH test paper and measures inaccurate and measure loaded down with trivial details defect.Power supply is passed to single-chip microcomputer after mu balanced circuit again, ensure the stable of service voltage, extend the serviceable life of single-chip microcomputer, the TL431 wherein using in mu balanced circuit is controllable accurate source of stable pressure, its output voltage just can be set to 2.5V to any value within the scope of 36V arbitrarily with two resistance, uses more flexible.
Just can realize as mentioned above this utility model.
Claims (6)
1. carbon dioxide detector, it is characterized in that: comprise single-chip microcomputer, power supply, audible-visual annunciator, clock chip, data-carrier store, A/D converter, infrared sensor, mu balanced circuit and I/O extended chip, described audible-visual annunciator, clock chip, data-carrier store, mu balanced circuit, I/O extended chip and A/D converter are all connected single-chip microcomputer; Described A/D converter also connects infrared sensor; Described power supply connects mu balanced circuit; On described I/O extended chip, also connect keyboard and printer.
2. carbon dioxide detector according to claim 1, it is characterized in that: described mu balanced circuit is adjustable mu balanced circuit, comprise resistance R 1, resistance R 2, resistance R 3 and controllable accurate source of stable pressure C, the negative electrode K of controllable accurate source of stable pressure C wherein and with reference to contact resistance R2 between utmost point R, contact resistance R3 between the reference utmost point R of controllable accurate source of stable pressure C and anode A, also contact resistance R1 of the negative electrode of controllable accurate source of stable pressure C, between the anode A of resistance R 1 and controllable accurate source of stable pressure C, it is power input, between the negative electrode K of controllable accurate source of stable pressure C and anode A, it is power output end.
3. carbon dioxide detector according to claim 2, is characterized in that: the model of described controllable accurate source of stable pressure C is TL431.
4. carbon dioxide detector according to claim 1, is characterized in that: on described single-chip microcomputer, also connect LCD liquid crystal display.
5. carbon dioxide detector according to claim 1, is characterized in that: the model of described clock chip is DS1307.
6. carbon dioxide detector according to claim 1, is characterized in that: described single-chip microcomputer model is AT89S51.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420136751.1U CN203786032U (en) | 2014-03-25 | 2014-03-25 | Carbon dioxide gas detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420136751.1U CN203786032U (en) | 2014-03-25 | 2014-03-25 | Carbon dioxide gas detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203786032U true CN203786032U (en) | 2014-08-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420136751.1U Expired - Fee Related CN203786032U (en) | 2014-03-25 | 2014-03-25 | Carbon dioxide gas detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203786032U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868878A (en) * | 2014-03-25 | 2014-06-18 | 成都国科海博信息技术股份有限公司 | Gas detection instrument |
| CN104897601A (en) * | 2015-05-14 | 2015-09-09 | 昆山曼特益光电科技有限公司 | Carbon dioxide detection device |
-
2014
- 2014-03-25 CN CN201420136751.1U patent/CN203786032U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868878A (en) * | 2014-03-25 | 2014-06-18 | 成都国科海博信息技术股份有限公司 | Gas detection instrument |
| CN104897601A (en) * | 2015-05-14 | 2015-09-09 | 昆山曼特益光电科技有限公司 | Carbon dioxide detection 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: 20140820 Termination date: 20200325 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |