CN203443606U - Indoor pollution gas concentration monitoring device - Google Patents
Indoor pollution gas concentration monitoring device Download PDFInfo
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- CN203443606U CN203443606U CN201320508062.4U CN201320508062U CN203443606U CN 203443606 U CN203443606 U CN 203443606U CN 201320508062 U CN201320508062 U CN 201320508062U CN 203443606 U CN203443606 U CN 203443606U
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Abstract
The utility model relates to an indoor pollution gas concentration monitoring device which is characterized in that the device comprises a central main control unit and comprises a VOC sensor, a formaldehyde sensor, an ammonia sensor, a benzene sensor, a temperature and humidity sensor, a liquid crystal display screen and a power supply which are connected with the central main control unit respectively. The power supply supplies power for the central main control unit, each sensor and the liquid crystal display screen. The four indoor pollution gas sensors and the temperature and humidity sensor convert the detected indoor pollution gases and the temperature and humidity of indoor air into the corresponding electrical signals and send the electric signals to the central control unit. The central control unit carries out analysis processing on input electric signals and carries out comparison on the signals with indoor air quality detection standard values prescribed the state and carries out calculation, and the concentration values of the four indoor pollution gases are obtained and transmitted to the liquid crystal display screen to directly carry out displaying or the concentration values are outputted through a serial communication module. The indoor pollution gas concentration monitoring device can be widely applied to monitor air in any closed or semi-closed space.
Description
Technical field
The utility model relates to a kind of gas concentration inspect device, particularly about a kind of indoor polluted gas concentration monitor device.
Background technology
When IAQ (indoor air quality) is detected, according to national IAQ (indoor air quality) standard, needing PARA FORMALDEHYDE PRILLS(91,95), benzene, ammonia and TVOC(TOVC) four kinds of air pollutants detect, and existing IAQ (indoor air quality) detection method has following three kinds: (1) gathers room air and carries out instrumental analysis to chemical laboratory.The method is long detection time used, and expense is very high, and can not carry out continuous detecting to room air.(2) with in-site measurement instruments such as test paper or reagent, carry out assay readings.The method surveying instrument used has test tube, dropper etc., and chemistry titration operation easier is large, strongly professional, can not real-time continuous measure.The Test paper of low side is easy to use, but accuracy of detection is low, detects gaseous species incomplete, can not detect in real time room air equally.(3) use gas sensor to be made into professional instrument and carry out continuous coverage.Because this series products major part on market is industrial detection product, range is larger, scarcely applicable to indoor low concentration pollution gasmetry, and generally can only measure a certain gas content.While mixing for multiple gases, every kind of sensor can produce to intersect and disturb, thereby causes the measured value of every kind of sensor all bigger than normal a lot of than actual value, so its measuring accuracy is lower.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to provide the indoor polluted gas concentration monitor device applicable used in everyday that a kind of measuring accuracy is high, measurement result reliability is strong, easy and simple to handle.
For achieving the above object, the utility model is taked following technical scheme: a kind of indoor polluted gas concentration monitor device, is characterized in that: it comprises central primary control unit and the VOC sensor being connected with central primary control unit respectively, formaldehyde sensor, ammonia gas sensor, benzene sensor, Temperature Humidity Sensor, LCDs and power supply; Described VOC sensor, formaldehyde sensor, ammonia gas sensor, benzene sensor and described Temperature Humidity Sensor convert the temperature and humidity of the indoor polluted gas detecting and room air to respectively corresponding electric signal and send to described central primary control unit, described central primary control unit to input each electric signal analyzing and processing after, result is transferred to described LCDs and show, described power supply is described central primary control unit, each sensor and LCDs power supply.
Described central primary control unit comprises analog-to-digital conversion module, digital filtering module, compensating module, matrixing module, liquid crystal display control module, sound and light alarm module and serial communication modular, described analog-to-digital conversion module is by the indoor polluted gas receiving and indoor air temperature, the simulating signal of humidity converts digital data transmission to and carries out after filtering processing to described digital filtering module, through described compensating module, transfer to described matrixing module, digital signal processing after described matrixing module is to compensation obtains concentration value and the alerting signal of indoor polluted gas, and by matrixing module, the concentration value of indoor polluted gas is transferred to respectively to described liquid crystal display control module and serial communication modular, alerting signal is transferred to described sound and light alarm module, described liquid crystal display control module transfers to described LCDs by the concentration value of indoor polluted gas, and described serial communication modular transfers to external data storage device by concentration value.
The utility model is owing to taking above technical scheme, it has the following advantages: 1, the utility model is due to the VOC sensor that is provided with central primary control unit and is connected with central primary control unit respectively, formaldehyde sensor, ammonia gas sensor, benzene sensor, temperature, humidity sensor, LCDs and power supply, VOC sensor, formaldehyde sensor, ammonia gas sensor, benzene sensor and temperature, humidity sensor is simultaneously to indoor polluted gas and indoor temperature, humidity detects, and will detect data transmission to central primary control unit, by central primary control unit according to the temperature of each sensor, humidity error rate compensates the digital signal of the filtered dusty gas receiving, therefore the utility model can reduce the impact of gas cross interference on accuracy of detection, guarantee the accuracy of measurement result, thereby raising measuring accuracy.2, the utility model is owing to automatically detecting indoor polluted gas and indoor air temperature, humidity by VOC sensor, formaldehyde sensor, ammonia gas sensor, benzene sensor and temperature, humidity sensor, and testing result is transferred to central primary control unit process, the measured value of the indoor polluted gas after processing shows by LCDs, therefore the utility model is easy and simple to handle, is convenient to carry out the measurement of indoor polluted gas concentration.3, the utility model is owing to the concentration value of the indoor polluted gas measuring can being transferred to external data storage device by serial communication modular, and therefore extensibility of the present utility model is strong, measurement result can be processed for follow-up data.Based on above advantage, the dusty gas concentration that the utility model can be widely used in or semi-hermetic space airtight to residential building, office building, hotel, school, hospital and underground works facility etc. is monitored.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present utility model
Fig. 2 is the structural representation of Fig. 1 central primary control unit
Fig. 3 is used the magnitude of voltage of the utility model front and back output with the curve synoptic diagram of humidity variation
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1, the VOC(Volatile Organic Compounds that the utility model comprises central primary control unit 1 and is connected with central primary control unit 1 respectively, volatile organic compounds) sensor 2, formaldehyde sensor 3, ammonia gas sensor 4, benzene sensor 5, Temperature Humidity Sensor 6, LCDs 7 and power supply 8.Wherein, VOC sensor 2, formaldehyde sensor 3, ammonia gas sensor 4 and benzene sensor 5 convert the corresponding indoor polluted gas detecting to corresponding electric signal respectively and send to central primary control unit 1, Temperature Humidity Sensor 6 converts the temperature and humidity of the room air detecting to corresponding electric signal and sends to central primary control unit 1, each electric signal of the 1 pair of input in central primary control unit carries out after analyzing and processing, compare calculating with the IAQ (indoor air quality) examination criteria value of the national regulation of storage in central primary control unit 1, obtain VOC, formaldehyde, the concentration value of ammonia and four kinds of indoor polluted gas of benzene, the concentration value of resulting four kinds of indoor polluted gas transfers to LCDs 7 and directly shows.Power supply 8 provides power supply for central primary control unit 1, VOC sensor 2, formaldehyde sensor 3, ammonia gas sensor 4, benzene sensor 5, Temperature Humidity Sensor 6 and LCDs 7.
In above-described embodiment, as shown in Figure 2, central primary control unit 1 comprises analog-to-digital conversion module 11, digital filtering module 12, compensating module 13, matrixing module 14, liquid crystal display control module 15, sound and light alarm module 16 and serial communication modular 17.Analog-to-digital conversion module 11 by the VOC receiving, formaldehyde, ammonia and four kinds of indoor polluted gas of benzene and the temperature of room air, the simulating signal of humidity converts digital data transmission to digital filtering module 12, 12 pairs of digital filtering modules contain VOC, formaldehyde, ammonia and four kinds of indoor polluted gas information of benzene and the temperature of room air, the digital signal of humidity information carries out transferring to compensating module 13 after filtering processing, compensating module 13 compensates the filtered digital signal receiving according to the temperature of each sensor, humidity error rate, and the signal after compensation transfers to matrixing module 14, the matrix of coefficients of the signal value after 14 pairs of compensation of matrixing module and the IAQ (indoor air quality) examination criteria value of national regulation carries out linear transformation, by solving an equation, obtain respectively VOC, formaldehyde, the concentration value of ammonia and four kinds of indoor polluted gas of benzene, and by the VOC obtaining, formaldehyde, the IAQ (indoor air quality) examination criteria value of the concentration value of ammonia and four kinds of indoor polluted gas of benzene and national regulation compares, if VOC, formaldehyde, in four kinds of indoor polluted gas of ammonia and benzene, the concentration value of certain gas exceeds the IAQ (indoor air quality) examination criteria value of national regulation, produce corresponding alerting signal, the concentration value of VOC, formaldehyde, ammonia and four kinds of indoor polluted gas of benzene transfers to liquid crystal display control module 15 and serial communication modular 17 respectively, and corresponding alerting signal transfers to sound and light alarm module 16 and reports to the police, the concentration value of VOC, formaldehyde, ammonia and four kinds of indoor polluted gas of benzene transfers to LCDs 7 by liquid crystal display control module 15 and shows, concentration value is transferred to the (not shown)s such as external data storage device process for follow-up data by serial communication modular 17.
In above-described embodiment, liquid crystal display control module 15 is also for controlling the background colour of LCDs 7, and when tested gas concentration value is during lower than the IAQ (indoor air quality) examination criteria value of national regulation, the background colour of LCDs 7 is green; When tested gas concentration value surpasses the IAQ (indoor air quality) examination criteria value of national regulation on a small quantity, the background colour of LCDs 7 is yellow; When tested gas concentration value seriously surpasses the IAQ (indoor air quality) examination criteria value of national regulation, the background colour of LCDs 7 is red; Thereby realize the function of automatic-prompting air quality quality.
Below by specific embodiment, the Output rusults of indoor polluted gas concentration monitor device of the present utility model is described further.
Embodiment: gather room air and input in indoor polluted gas concentration monitor device of the present utility model, as shown in Figure 3, take the measured value of humidity (unit: %) be the output voltage values of transverse axis, sensor (unit: 10 μ ν) in the rectangular coordinate system of the longitudinal axis, obtain the curve that curve that zero shape connects is connected with * shape.Wherein, the curve that zero shape connects represents the output voltage curve of VOC sensor 2 before humidity compensate, i.e. not through the processing of central primary control the unit 1 and direct corresponding relation of the magnitude of voltage of output and the humidity value of temperature, humidity sensor 6 measurements of the output signal of VOC sensor 2; * the curve that shape connects represents the output voltage curve of VOC sensor 2 after humidity compensate, the corresponding relation of the humidity value that the magnitude of voltage that output signal of VOC sensor 2 is exported after the processing of central primary control unit 1 and temperature, humidity sensor 6 are measured.The curve being connected from zero shape, along with the increase of humidity, the impact that before humidity compensate, the output voltage values of VOC sensor 2 is changed by humidity increases, and this is because the increase meeting along with humidity is introduced measuring error to VOC sensor 2 gradually; The curve being connected from * shape, along with the increase of humidity, the impact that after humidity compensate, the output voltage values of VOC sensor 2 is changed by humidity obviously reduces.
Temperature compensation is identical with humidity compensate principle.The temperature and humidity compensated principle of formaldehyde sensor 2, ammonia gas sensor 3, benzene sensor 4 is identical with the compensation principle of VOC sensor 1.
The various embodiments described above are only for illustrating the utility model; wherein the structure of each parts, connected mode etc. all can change to some extent; every equivalents of carrying out on the basis of technical solutions of the utility model and improvement, all should not get rid of outside protection domain of the present utility model.
Claims (2)
1. an indoor polluted gas concentration monitor device, is characterized in that: it comprises central primary control unit and the VOC sensor being connected with central primary control unit respectively, formaldehyde sensor, ammonia gas sensor, benzene sensor, Temperature Humidity Sensor, LCDs and power supply; Described VOC sensor, formaldehyde sensor, ammonia gas sensor, benzene sensor and described Temperature Humidity Sensor convert the temperature and humidity of the indoor polluted gas detecting and room air to respectively corresponding electric signal and send to described central primary control unit, described central primary control unit to input each electric signal analyzing and processing after, result is transferred to described LCDs and show, described power supply is described central primary control unit, each sensor and LCDs power supply.
2. a kind of indoor polluted gas concentration monitor device as described in claim 1, is characterized in that: described central primary control unit comprises analog-to-digital conversion module, digital filtering module, compensating module, matrixing module, liquid crystal display control module, sound and light alarm module and serial communication modular, described analog-to-digital conversion module is by the indoor polluted gas receiving and indoor air temperature, the simulating signal of humidity converts digital data transmission to and carries out after filtering processing to described digital filtering module, through described compensating module, transfer to described matrixing module, digital signal processing after described matrixing module is to compensation obtains concentration value and the alerting signal of indoor polluted gas, and by matrixing module, the concentration value of indoor polluted gas is transferred to respectively to described liquid crystal display control module and serial communication modular, alerting signal is transferred to described sound and light alarm module, described liquid crystal display control module transfers to described LCDs by the concentration value of indoor polluted gas, and described serial communication modular transfers to external data storage device by concentration value.
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| CN201320508062.4U CN203443606U (en) | 2013-08-20 | 2013-08-20 | Indoor pollution gas concentration monitoring device |
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| CN201320508062.4U CN203443606U (en) | 2013-08-20 | 2013-08-20 | Indoor pollution gas concentration monitoring device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248542A (en) * | 2016-08-16 | 2016-12-21 | 广东欧珀移动通信有限公司 | A kind of detect the method for air quality, device and terminal |
| CN107449863A (en) * | 2017-08-06 | 2017-12-08 | 安徽亿纵电子科技有限公司 | A kind of operation room air quality monitoring method |
| CN107462676A (en) * | 2017-08-06 | 2017-12-12 | 安徽亿纵电子科技有限公司 | A kind of air quality detection system between coating spraying |
| CN107966478A (en) * | 2016-10-19 | 2018-04-27 | 华邦电子股份有限公司 | Sensor array, its manufacture method and method for sensing |
| WO2018115531A1 (en) * | 2016-12-23 | 2018-06-28 | Koninklijke Philips N.V. | A system and method for measuring a concentration of a pollutant within a gas |
| JP2018136291A (en) * | 2017-02-21 | 2018-08-30 | 白井松器械株式会社 | Gas concentration measuring system |
| CN109239263A (en) * | 2018-08-25 | 2019-01-18 | 徐州吉瑞合金铸造有限公司 | A kind of air monitoring device in foundry work workshop |
| CN112033865A (en) * | 2020-09-14 | 2020-12-04 | 北京中立格林传感科技股份有限公司 | Gas detection system and detection method |
| CN112379043A (en) * | 2020-10-10 | 2021-02-19 | 北京索斯克科技开发有限公司 | Gas detection system and method |
| CN113442676A (en) * | 2021-06-28 | 2021-09-28 | 东风汽车集团股份有限公司 | Air quality control system in car |
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2013
- 2013-08-20 CN CN201320508062.4U patent/CN203443606U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248542A (en) * | 2016-08-16 | 2016-12-21 | 广东欧珀移动通信有限公司 | A kind of detect the method for air quality, device and terminal |
| CN107966478A (en) * | 2016-10-19 | 2018-04-27 | 华邦电子股份有限公司 | Sensor array, its manufacture method and method for sensing |
| US11280705B2 (en) | 2016-12-23 | 2022-03-22 | Koninklijke Philips N.V. | System and method for measuring a concentration of a pollutant within a gas |
| WO2018115531A1 (en) * | 2016-12-23 | 2018-06-28 | Koninklijke Philips N.V. | A system and method for measuring a concentration of a pollutant within a gas |
| JP2018136291A (en) * | 2017-02-21 | 2018-08-30 | 白井松器械株式会社 | Gas concentration measuring system |
| CN107449863A (en) * | 2017-08-06 | 2017-12-08 | 安徽亿纵电子科技有限公司 | A kind of operation room air quality monitoring method |
| CN107462676A (en) * | 2017-08-06 | 2017-12-12 | 安徽亿纵电子科技有限公司 | A kind of air quality detection system between coating spraying |
| CN109239263A (en) * | 2018-08-25 | 2019-01-18 | 徐州吉瑞合金铸造有限公司 | A kind of air monitoring device in foundry work workshop |
| WO2022052319A1 (en) * | 2020-09-14 | 2022-03-17 | 北京中立格林传感科技股份有限公司 | Gas detection system and detection method |
| CN112033865A (en) * | 2020-09-14 | 2020-12-04 | 北京中立格林传感科技股份有限公司 | Gas detection system and detection method |
| GB2614967A (en) * | 2020-09-14 | 2023-07-26 | Tongdy Sensing Tech Beijing Co Ltd | Gas detection system and detection method |
| CN112379043A (en) * | 2020-10-10 | 2021-02-19 | 北京索斯克科技开发有限公司 | Gas detection system and method |
| CN113442676A (en) * | 2021-06-28 | 2021-09-28 | 东风汽车集团股份有限公司 | Air quality control system in car |
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