CN215263334U - Distributed formaldehyde detection system - Google Patents
Distributed formaldehyde detection system Download PDFInfo
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- CN215263334U CN215263334U CN202120436445.XU CN202120436445U CN215263334U CN 215263334 U CN215263334 U CN 215263334U CN 202120436445 U CN202120436445 U CN 202120436445U CN 215263334 U CN215263334 U CN 215263334U
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- formaldehyde
- central controller
- sensor
- display terminal
- detection system
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 219
- 238000001514 detection method Methods 0.000 title claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 18
- 230000008054 signal transmission Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 5
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 4
- 230000004044 response Effects 0.000 claims description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- 238000004458 analytical method Methods 0.000 description 4
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 3
- 238000005034 decoration Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000008096 xylene Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000375 direct analysis in real time Methods 0.000 description 1
- 238000012063 dual-affinity re-targeting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
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- 239000003440 toxic substance Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model provides a distributed formaldehyde detection system, which comprises a data acquisition device, a PM2.5 sensor, a central controller, a humidity and temperature sensor, an RS485 bus, a wireless communication device and a display terminal; the plurality of data acquisition devices are connected in parallel on an RS485 bus, and the RS485 bus is connected with the central controller; the PM2.5 sensor and the humidity and temperature sensor are connected with the central controller and transmit acquired data information to the central controller; the central controller carries out bidirectional signal transmission with the display terminal through the wireless communication device; and the display terminal receives and processes the data transmitted by the central controller. The utility model discloses can realize monitoring and reporting to the police a plurality of monitoring point formaldehyde gas concentration in factory simultaneously, when the formaldehyde gas concentration in certain region surpassed to report to the police and set up the restriction, the alarm that corresponds with it sends the alarm sound, and the factory personnel of being convenient for in time know and handle.
Description
Technical Field
The utility model relates to a factory building air quality detects technical field, particularly, relates to a distributing type formaldehyde detecting system.
Background
The living standard of people is continuously improved, and the requirement for living is higher and higher. At present, most of decoration materials are cementing materials or paint and the like, and most of the materials can release toxic substances such as benzene, toluene, xylene, formaldehyde and the like. The concentrations of benzene, toluene and xylene are high and the concentration of formaldehyde is low in a short time during decoration; however, the concentration of benzene, toluene and xylene gradually decreases and the concentration of formaldehyde tends to increase with the passage of time, and the substances can seriously affect the health of human bodies. With the health emphasis of people and the rise of home decoration industry, the detection of typical pollutants is also one of the key points of current research. The formaldehyde has the characteristics of lasting harm and serious consequences, so that most of the detection in the market at present aims at the formaldehyde. The national standard methods for formaldehyde analysis can be divided into two major types, namely spectrophotometry and gas chromatography, but the two types of methods need to collect gas samples on a monitoring site and return the gas samples to a laboratory for analysis, so that the analysis period is long, the cost is high, the steps are complicated, and the condition of indoor air formaldehyde pollution cannot be reflected in real time. If the measurement is to be fast and portable, sensor measurement can be used, and the current portable measuring instruments used in the market are electrochemical sensors.
Formaldehyde testers and toluene testers are widely available on the market, and the testers are usually separated independently. Taking a formaldehyde tester as an example, most of the formaldehyde testers sold on the market currently utilize an electrochemical Sensor of DART Sensor company, but the output current of the electrochemical Sensor is only nA level, the signal is weak, the electrochemical Sensor is easily interfered by the outside, the price is expensive, and the low cost is difficult to achieve. Meanwhile, the sensor cannot effectively store data when measuring data, does not have a wireless communication mode, and is complex in wiring, high in cost, and poor in expansibility and mobility. Moreover, the real-time display of the processing of the test data cannot provide an effective reference for the quality analysis and judgment of the located space. In view of the above disadvantages, it is a significant task to develop a new monitoring device that is fast, continuous, automatic, and inexpensive.
Disclosure of Invention
In order to solve the problem that the formaldehyde detection data reaction speed among the above-mentioned prior art is slow, can not real time monitoring data, can not radio communication, the utility model provides a distributing type formaldehyde detecting system.
The technical scheme of the utility model is that: a distributed formaldehyde detection system comprises a data acquisition device, a PM2.5 sensor, a central controller, a humidity and temperature sensor, an RS485 bus, a wireless communication device and a display terminal; the plurality of data acquisition devices are connected in parallel on an RS485 bus, and the RS485 bus is connected with the central controller to form a data acquisition grade network; the PM2.5 sensor and the humidity and temperature sensor are connected with the central controller and transmit acquired data information to the central controller; the central controller carries out bidirectional signal transmission with the display terminal through the wireless communication device; and the display terminal receives and processes the data transmitted by the central controller.
Further, the data acquisition device comprises an ADuC834 single chip microcomputer, and a formaldehyde gas sensor, an alarm output device and an exhaust system which are connected with the ADuC834 single chip microcomputer; the formaldehyde gas sensor transmits acquired data information to the ADuC834 single chip microcomputer in an AD input mode, and the ADuC834 single chip microcomputer transmits a control instruction to the exhaust system in a DA output mode; the ADuC834 single chip microcomputer also transmits a control instruction to an alarm output device; the ADuC834 single chip microcomputer transmits the collected and processed data information to the MAX485 chip; and the MAX485 chip exchanges data with a central controller through the RS485 bus.
Furthermore, a plurality of data acquisition devices are dispersedly arranged in a plurality of different areas of the factory floor.
Furthermore, the monitoring range of the formaldehyde gas sensor is 0-100 ppm, the resolution is less than or equal to 1ppm, and the response time is less than or equal to 35 s.
Further, the display terminal is a mobile phone or a computer.
Further, the wireless communication device and the display terminal 7 perform signal transmission through GSM, CDMA, LTE or WiFi.
Further, the wireless communication device is an ESP8266 Wi-Fi module.
Furthermore, formaldehyde monitoring system software is installed in the display terminal, and the formaldehyde monitoring system can realize the functions of formaldehyde concentration dynamic curve display, historical data query, exhaust system starting and alarm reminding.
Further, the central controller is an MSP430 single chip microcomputer, and the formaldehyde gas sensor is a nano sensor.
Further, the central controller supplies power through commercial power or a storage battery; the formaldehyde gas sensor 12 is powered by a battery.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the utility model discloses a distributed formaldehyde detecting system can realize monitoring and reporting to the police a plurality of monitoring point formaldehyde gas concentration in factory simultaneously, and when the formaldehyde concentration gas concentration in certain region in factory exceeded the warning and set up the restriction, the alarm that corresponds with it sent the warning sound, and the factory personnel of being convenient for in time know and handle.
2) The utility model discloses a distributing type formaldehyde detecting system can pass to display terminal through the wireless network with the gas concentration who gathers and carry out the linear data fitting, and then realizes functions such as dynamic curve demonstration, historical data inquiry and warning.
3) The utility model discloses a distributed formaldehyde detection system adopts the nanosensor, can reach the high accuracy acquisition circuit of 10uA rank signal, guarantees the precision and the sensitivity of data; the sensor is connected in a constant current mode, so that the power consumption can be as low as tens of microwatts; meanwhile, the chip which does not work is dormant by utilizing program optimization, so that the power consumption of spare elements is reduced, and the service life and the efficiency of the product are improved.
4) The utility model discloses a distributed formaldehyde detection system utilizes wireless communication technology, realizes data communication and information sharing between equipment and the terminal; therefore, the user can check the test result through a computer or a mobile phone.
Drawings
FIG. 1 is a schematic structural diagram of a distributed formaldehyde detection system according to the present invention;
fig. 2 is a schematic structural diagram of the data acquisition device of the present invention;
the reference numbers are as follows: 1. a data acquisition device; 2. a PM2.5 sensor; 3. a central controller; 4. a wet temperature sensor; 5. an RS485 bus; 6. a wireless communication device; 7. a display terminal; 11. ADuC834 single-chip microcomputer; 12. a formaldehyde gas sensor; 13. an alarm output device; 14. an exhaust system; 15. MAX485 chip.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1
As shown in fig. 1, a distributed formaldehyde detection system comprises a data acquisition device 1, a PM2.5 sensor 2, a central controller 3, a humidity temperature sensor 4, an RS485 bus 5, a wireless communication device 6, and a display terminal 7; the data acquisition devices 1 are connected in parallel on an RS485 bus 5, and the RS485 bus 5 is connected with the central controller 3 to form a data acquisition grade network; the PM2.5 sensor 2 and the humidity and temperature sensor 4 are connected with the central controller 3, and transmit the acquired data information to the central controller 3; the central controller 3 carries out bidirectional signal transmission with the display terminal 7 through the wireless communication device 6; the display terminal 7 receives and processes the data transmitted from the central controller 3. The data acquisition devices 1 are dispersedly arranged in different areas of a factory, the display terminal 7 is a mobile phone or a computer, formaldehyde monitoring system software is installed in the display terminal 7, and the formaldehyde monitoring system can realize the functions of displaying a formaldehyde concentration dynamic curve, inquiring historical data, starting an exhaust system and alarming and reminding.
The utility model discloses a system has adopted the control structure based on the distributing type of RS485 bus, extends multichannel formaldehyde and gathers, has realized a plurality of formaldehyde collection boards with central controller's communication network, has accomplished the concatenation of a plurality of data acquisition boards. Formaldehyde data collected by the nano sensor are sent to the central controller through an RS485 bus, and are sent to the server PC through an ESP8266 module in a WIFI mode. And the terminal PC receives the data transmitted by the central controller and performs processing such as display, data imaging, alarm and the like. The formaldehyde detection system can monitor and alarm the concentration of formaldehyde gas at a plurality of monitoring points in an area, and gives ventilation and exhaust actions so that factory personnel can know and process the formaldehyde gas in time.
As shown in fig. 2, the data acquisition device 1 includes an ADuC834 single chip microcomputer 11, and a formaldehyde gas sensor 12, an alarm output device 13, and an exhaust system 14 connected to the ADuC834 single chip microcomputer 11; the formaldehyde gas sensor 12 transmits acquired data information to the ADuC834 single chip microcomputer 11 in an AD input mode, and the ADuC834 single chip microcomputer 11 transmits a control instruction to the exhaust system 14 in a DA output mode; the ADuC834 single-chip microcomputer 11 also transmits a control instruction to the alarm output device 13; the ADuC834 single chip microcomputer 11 transmits the collected and processed data information to the MAX485 chip 15; the MAX485 chip 15 exchanges data with the central controller 3 through the RS485 bus 5. The monitoring range of the formaldehyde gas sensor 12 is 0-100 ppm, the resolution is less than or equal to 1ppm, and the response time is less than or equal to 35 s. The central controller 3 is an MSP430 singlechip, and the formaldehyde gas sensor 12 is a nano sensor. The central controller 3 is powered by commercial power or a storage battery; the formaldehyde gas sensor 12 is powered by a battery.
The data acquisition device 1 takes an ADuC834 singlechip as a core to coordinate and control the operation of each circuit, the series of singlechips have the advantages that AD and DA are achieved, the ADuC834 is provided with 16/24-bit high-speed and high-precision ADC, and a single-channel 12-bit rail-to-rail voltage output DAC. ADuC834 completes the functions of signal acquisition, alarm output, formaldehyde signal transmission, exhaust system control and the like of the formaldehyde sensor, and completes the level conversion of an RS485 bus by utilizing MAX485, and the data acquisition board structure frame is shown in figure 2.
The utility model discloses a distributed formaldehyde detecting system can realize monitoring and reporting to the police a plurality of monitoring point formaldehyde gas concentration in factory simultaneously, and when the formaldehyde concentration gas concentration in certain region in factory exceeded the warning and set up the restriction, the alarm that corresponds with it sent the warning sound, and the factory personnel of being convenient for in time know and handle.
While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (9)
1. The utility model provides a distributing type formaldehyde detecting system which characterized in that: the system comprises a data acquisition device (1), a PM2.5 sensor (2), a central controller (3), a humidity and temperature sensor (4), an RS485 bus (5), a wireless communication device (6) and a display terminal (7); the data acquisition devices (1) are connected in parallel on an RS485 bus (5), and the RS485 bus (5) is connected with the central controller (3) to form a data acquisition grade network; the PM2.5 sensor (2) and the humidity and temperature sensor (4) are connected with the central controller (3) and transmit acquired data information to the central controller (3); the central controller (3) performs bidirectional signal transmission with the display terminal (7) through the wireless communication device (6); the display terminal (7) receives and processes the data transmitted by the central controller (3); the data acquisition device (1) comprises an ADuC834 single chip microcomputer (11), and a formaldehyde gas sensor (12), an alarm output device (13) and an exhaust system (14) which are connected with the ADuC834 single chip microcomputer (11); the formaldehyde gas sensor (12) transmits acquired data information to the ADuC834 single chip microcomputer (11) in an AD input mode, and the ADuC834 single chip microcomputer (11) transmits a control instruction to the exhaust system (14) in a DA output mode; the ADuC834 single chip microcomputer (11) also transmits a control instruction to an alarm output device (13); the ADuC834 single chip microcomputer (11) transmits the collected and processed data information to the MAX485 chip (15); and the MAX485 chip (15) exchanges data with the central controller (3) through the RS485 bus (5).
2. The distributed formaldehyde detection system according to claim 1, wherein: the data acquisition devices (1) are dispersedly arranged in different areas of a factory.
3. The distributed formaldehyde detection system according to claim 1, wherein: the monitoring range of the formaldehyde gas sensor (12) is 0-100 ppm, the resolution is less than or equal to 1ppm, and the response time is less than or equal to 35 s.
4. The distributed formaldehyde detection system according to claim 1, wherein: the display terminal (7) is a mobile phone or a computer.
5. The distributed formaldehyde detection system according to claim 1, wherein: the wireless communication device (6) and the display terminal (7) carry out signal transmission through GSM or CDMA or LTE or WiFi.
6. The distributed formaldehyde detection system according to claim 1, wherein: the wireless communication device (6) is an ESP8266 Wi-Fi module.
7. The distributed formaldehyde detection system according to claim 1, wherein: the formaldehyde monitoring system is characterized in that formaldehyde monitoring system software is installed in the display terminal (7), and the formaldehyde monitoring system can realize the functions of displaying a formaldehyde concentration dynamic curve, inquiring historical data, starting an exhaust system and alarming and reminding.
8. The distributed formaldehyde detection system according to claim 1, wherein: the central controller (3) is an MSP430 single chip microcomputer, and the formaldehyde gas sensor (12) is a nano sensor.
9. The distributed formaldehyde detection system according to claim 1, wherein: the central controller (3) is powered by commercial power or a storage battery; the formaldehyde gas sensor (12) is powered by a battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120436445.XU CN215263334U (en) | 2021-03-01 | 2021-03-01 | Distributed formaldehyde detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120436445.XU CN215263334U (en) | 2021-03-01 | 2021-03-01 | Distributed formaldehyde detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215263334U true CN215263334U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120436445.XU Expired - Fee Related CN215263334U (en) | 2021-03-01 | 2021-03-01 | Distributed formaldehyde detection system |
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| Country | Link |
|---|---|
| CN (1) | CN215263334U (en) |
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2021
- 2021-03-01 CN CN202120436445.XU patent/CN215263334U/en not_active Expired - Fee Related
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Granted publication date: 20211221 |