CN112326890A - Wireless portable toxic gas detection system and detection method thereof - Google Patents
Wireless portable toxic gas detection system and detection method thereof Download PDFInfo
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- 238000001514 detection method Methods 0.000 title claims abstract description 453
- 239000002341 toxic gas Substances 0.000 title claims abstract description 42
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 230
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 195
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 115
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 115
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 115
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 115
- 229910002091 carbon monoxide Inorganic materials 0.000 claims abstract description 115
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims abstract description 115
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 80
- 238000004891 communication Methods 0.000 claims abstract description 29
- 239000003990 capacitor Substances 0.000 claims description 84
- 239000000919 ceramic Substances 0.000 claims description 73
- 230000005540 biological transmission Effects 0.000 claims description 19
- 230000001960 triggered effect Effects 0.000 claims description 12
- 239000013078 crystal Substances 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 7
- 230000009467 reduction Effects 0.000 claims description 7
- 230000010355 oscillation Effects 0.000 claims description 5
- 239000003381 stabilizer Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 239000003985 ceramic capacitor Substances 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
- G01N33/0063—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display using a threshold to release an alarm or displaying means
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/14—Toxic gas alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Combustion & Propulsion (AREA)
- Emergency Management (AREA)
- Computer Networks & Wireless Communication (AREA)
- Business, Economics & Management (AREA)
- Environmental & Geological Engineering (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
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Abstract
The invention relates to the technical field of toxic gas detection, in particular to a wireless portable toxic gas detection system and a detection method thereof, wherein the wireless portable toxic gas detection system comprises a detection device, a wireless communication module, a background server and an intelligent terminal, wherein the detection device comprises a main controller, a power supply, a first detection module and a second detection module; the first detection module and the second detection module respectively comprise a carbon monoxide detection module, a carbon dioxide detection module, a hydrogen sulfide detection module and an ammonia detection module; the wireless portable toxic gas detection system is portable, convenient to use, high in reliability and capable of being well applied to detection of toxic gas.
Description
The technical field is as follows:
the invention relates to the technical field of toxic gas detection, in particular to a wireless portable toxic gas detection system and a detection method thereof.
Background art:
petrochemical is a short term for petrochemical industry, which refers to a processing industry for producing petroleum products and petrochemical products from petroleum and natural gas, and the petrochemical industry is an important component of chemical industry, plays an important role in the development of national economy, and is one of the prop industry departments in China.
Because the production activity process of petrochemical enterprises has the characteristics of high temperature and high pressure, flammability and explosiveness, toxicity and harm and easy occurrence of serious accidents, the principle of people-oriented and safety-oriented and the aim of prevention-oriented are taken as the main points, the toxic gas leakage problem in petrochemical enterprises is highly concerned at present, a toxic gas detection system is an important link in the safety production control process, and the design of a wireless portable and high-reliability toxic gas detection system becomes a technical problem to be solved urgently by technical personnel in the related technical field.
The invention content is as follows:
the invention aims to provide a wireless portable toxic gas detection system aiming at the defects in the prior art, which is portable, convenient to use, high in reliability and capable of being well applied to the detection of toxic gas;
the invention also provides a detection method of toxic gas.
In order to achieve the purpose, the invention adopts the technical scheme that: a wireless portable toxic gas detection system and a detection method thereof comprise a detection device, a wireless communication module, a background server and an intelligent terminal, wherein the detection device is in communication connection with the background server through the wireless communication module, and the intelligent terminal is in communication connection with the background server; the detection device comprises a main controller, a power supply, a first detection module and a second detection module; the first detection module and the second detection module respectively comprise a carbon monoxide detection module, a carbon dioxide detection module, a hydrogen sulfide detection module and an ammonia detection module; the power supply, the carbon monoxide detection module of the first detection module, the carbon dioxide detection module of the first detection module, the hydrogen sulfide detection module of the first detection module, the ammonia detection module of the first detection module, the carbon monoxide detection module of the second detection module, the carbon dioxide detection module of the second detection module, the hydrogen sulfide detection module of the second detection module and the ammonia detection module of the second detection module are respectively and electrically connected with the main controller; the carbon monoxide detection module is used for detecting the concentration of carbon monoxide in the air and converting the detected concentration of carbon monoxide into an electric signal; the carbon dioxide detection module is used for detecting the concentration of carbon dioxide in the air and converting the detected concentration of carbon dioxide into an electric signal; the hydrogen sulfide detection module is used for detecting the concentration of hydrogen sulfide in the air and converting the detected concentration of hydrogen sulfide into an electric signal; the ammonia gas detection module is used for detecting the ammonia gas concentration in the air and converting the detected ammonia gas concentration into an electric signal.
The scheme is further improved in that the wireless communication module is a NodeMCU module; the main controller comprises an ATmega328 chip, an oscillating circuit, a restarting circuit and a burning reminding circuit; the oscillation circuit comprises a crystal oscillator X1, a ceramic chip capacitor F1 and a ceramic chip capacitor F2, wherein one end of the crystal oscillator X1 is divided into two paths, one path is electrically connected with an XLAT1 pin of an ATmega328 chip, the other path is electrically connected with one end of the ceramic chip capacitor F1, and the other end of the ceramic chip capacitor F1 is grounded; the other end of the crystal oscillator X1 is divided into two paths, wherein one path is electrically connected with an XLAT2 pin of an ATmega328 chip, the other path is electrically connected with one end of a ceramic chip capacitor F2, and the other end of the ceramic chip capacitor F2 is grounded; the restarting circuit comprises a RESET key S1, one end of the RESET key S1 is grounded, the other end of the RESET key S1 is divided into two paths, one path is electrically connected with a RESET pin of the ATmega328 chip, the other path is connected with a power supply VCC, and a resistor R1 is connected between the RESET key S1 and the power supply VCC in series; the burning reminding circuit comprises an LED1, one end of an LED1 is electrically connected with a D13 pin of the ATmega328 chip, the other end of the LED1 is grounded, and a resistor R2 is connected between the LED1 and the ground in series.
The carbon monoxide detection module comprises a carbon monoxide detection circuit, the carbon monoxide detection circuit comprises a carbon monoxide detection chip and a ceramic chip capacitor F3, a power supply pin of the carbon monoxide detection chip is connected with a power supply VCC, a grounding pin of the carbon monoxide detection chip is grounded, a signal output end of the carbon monoxide detection chip is electrically connected with a pin A0 of the ATmega328 chip, one end of the ceramic chip capacitor F3 is connected with the power supply VCC, and the other end of the ceramic chip capacitor F3 is grounded; the carbon dioxide detection module comprises a carbon dioxide detection circuit, the carbon dioxide detection circuit comprises a carbon dioxide detection chip and a ceramic chip capacitor F4, a power supply pin of the carbon dioxide detection chip is connected with a power supply VCC, a grounding pin of the carbon dioxide detection chip is grounded, a signal output end of the carbon dioxide detection chip is electrically connected with a pin A1 of the ATmega328 chip, one end of the ceramic chip capacitor F4 is connected with the power supply VCC, and the other end of the ceramic chip capacitor F4 is grounded; the hydrogen sulfide detection module comprises a hydrogen sulfide detection circuit, the hydrogen sulfide detection circuit comprises a hydrogen sulfide detection chip and a ceramic chip capacitor F5, a power supply pin of the hydrogen sulfide detection chip is connected with a power supply VCC, a grounding pin of the hydrogen sulfide detection chip is grounded, a signal output end of the hydrogen sulfide detection chip is electrically connected with a pin A2 of the ATmega328 chip, one end of the ceramic chip capacitor F5 is connected with the power supply VCC, and the other end of the ceramic chip capacitor F5 is grounded; the ammonia gas detection module includes ammonia gas detection circuitry, and ammonia gas detection circuitry includes ammonia gas detection chip, ceramic chip electric capacity F6, and the power pin of ammonia gas detection chip VCC that connects, the ground connection pin ground connection of ammonia gas detection chip, the signal output part that the ammonia gas detected the chip is connected with the A3 pin electricity of ATmega328 chip, and ceramic chip electric capacity F6's a termination power VCC, ceramic chip electric capacity F6's other end ground connection.
The detection device further comprises an alarm module, wherein the alarm module comprises an alarm lamp and a loudspeaker, and the alarm lamp and the loudspeaker are respectively and electrically connected with the main controller; alarm module includes alarm circuit, alarm circuit includes the warning light, the speaker, triode PNP, the one end of warning light is connected with the D8 pin electricity of ATmega328 chip, another termination power VCC of warning light, it has resistance R3 to concatenate between warning light and the power VCC, triode PNP's base B is connected with the D9 pin electricity of ATmega328 chip, triode PNP's collecting electrode C ground connection, triode PNP's projecting pole E connects power VCC, the speaker concatenates between triode PNP's projecting pole E and power VCC.
The scheme is further improved in that the detection device further comprises a display device for displaying the detection result, and the display device is electrically connected with the main controller; the display device comprises a display circuit, wherein the display circuit comprises a display chip and a potentiometer P1, a VSS pin of the display chip is grounded, a grounding pin of a potentiometer P1 is grounded, a RW pin of the display chip is grounded, a VDD pin of the display chip is grounded, a VO pin of the display chip is electrically connected with an output pin of a potentiometer P1, a power supply pin of the potentiometer P1 is connected with the VCC, an RS pin of the display chip is electrically connected with a D12 pin of an ATmega328 chip, an E pin of the display chip is electrically connected with a D11 pin of the ATmega328 chip, a DB4 pin of the display chip is electrically connected with a D7 pin of the ATmega328 chip, a DB5 pin of the display chip is electrically connected with a D6 pin of the ATmega328 chip, a DB6 pin of the display chip is electrically connected with a D5 pin of the ATmega328 chip, a DB7 pin of the display chip is electrically connected with a D4 pin of the ATmega328 chip, the BGGND pin of the display chip is grounded.
The detection device further comprises a power supply voltage reduction circuit, wherein the power supply voltage reduction circuit comprises a voltage stabilizer LM7805, an electrolytic capacitor F7, an electrolytic capacitor F8, a ceramic chip capacitor F9 and a ceramic chip capacitor F10, the input end of the LM7805 is electrically connected with 12V voltage, the output end of the LM7805 outputs 5V voltage and is electrically connected with a VCC pin of an ATmega328 chip, a grounding pin of the LM7805 is grounded, one end of the electrolytic capacitor F7 is electrically connected with the 12V voltage, the other end of the electrolytic capacitor F7 is grounded, one end of the ceramic chip capacitor F9 is electrically connected with the 12V voltage, the other end of the ceramic chip capacitor F9 is grounded, one end of the electrolytic capacitor F8 is electrically connected with the output end of the electrolytic capacitor F7805, the other end of the electrolytic capacitor F8 is grounded, one end of the ceramic chip capacitor F10 is electrically connected with the output end of the ceramic chip capacitor LM.
The detection device further comprises a camera, an interphone and a positioning module for positioning the current position, wherein the camera, the interphone and the positioning module are electrically connected with the main controller respectively.
A toxic gas detection method, the method comprising the steps of:
A. presetting a carbon monoxide concentration highest value, a carbon dioxide concentration highest value, a hydrogen sulfide concentration highest value, an ammonia gas concentration highest value, a carbon monoxide concentration maximum difference value, a carbon dioxide concentration maximum difference value, a hydrogen sulfide concentration maximum difference value and an ammonia gas concentration maximum difference value;
B. moving the detection device into a desired detection area;
C. detecting the concentration of carbon monoxide in the air of a detection area through a carbon monoxide detection module of a first detection module in the detection device to obtain a first carbon monoxide concentration value; meanwhile, detecting the concentration of carbon monoxide in the air of the detection area through a carbon monoxide detection module of a second detection module in the detection device to obtain a carbon monoxide concentration value II; sending the obtained first carbon monoxide concentration value and the obtained second carbon monoxide concentration value to an intelligent terminal through a wireless transmission module and a background server;
D. detecting the concentration of carbon dioxide in the air of a detection area through a carbon dioxide detection module of a first detection module in the detection device to obtain a carbon dioxide concentration value I; meanwhile, detecting the concentration of carbon dioxide in the air of the detection area through a carbon dioxide detection module of a second detection module in the detection device to obtain a carbon dioxide concentration value II; sending the obtained carbon dioxide concentration value I and the obtained carbon dioxide concentration value II to an intelligent terminal through a wireless transmission module and a background server;
E. detecting the concentration of hydrogen sulfide in the air of a detection area through a hydrogen sulfide detection module of a first detection module in the detection device to obtain a first concentration value of hydrogen sulfide; meanwhile, detecting the concentration of hydrogen sulfide in the air of the detection area through a hydrogen sulfide detection module of a second detection module in the detection device to obtain a second concentration value of hydrogen sulfide; sending the obtained hydrogen sulfide concentration value I and the obtained hydrogen sulfide concentration value II to an intelligent terminal through a wireless transmission module and a background server;
F. detecting the ammonia concentration in the air of a detection area through an ammonia detection module of a first detection module in the detection device to obtain a first ammonia concentration value; meanwhile, detecting the ammonia concentration in the air of the detection area through an ammonia detection module of a second detection module in the detection device to obtain an ammonia concentration value II; sending the obtained ammonia concentration value I and ammonia concentration value II to an intelligent terminal through a wireless transmission module and a background server;
G. when the carbon monoxide concentration value I and/or the carbon monoxide concentration value II are/is greater than or equal to a preset carbon monoxide concentration maximum value, triggering an alarm signal; comparing the carbon monoxide concentration value I with the carbon monoxide concentration value II, and triggering an alarm signal when the difference between the carbon monoxide concentration value I and the carbon monoxide concentration value II is greater than or equal to a preset maximum carbon monoxide concentration difference value;
H. when the carbon dioxide concentration value I and/or the carbon dioxide concentration value II are/is larger than or equal to a preset carbon dioxide concentration maximum value, triggering an alarm signal; comparing the carbon dioxide concentration value I with the carbon dioxide concentration value II, and triggering an alarm signal when the difference between the carbon dioxide concentration value I and the carbon dioxide concentration value II is greater than or equal to a preset maximum difference of the carbon dioxide concentration;
I. when the concentration value I of the hydrogen sulfide and/or the concentration value II of the hydrogen sulfide are/is larger than or equal to the preset highest value of the concentration of the hydrogen sulfide, triggering an alarm signal; comparing the hydrogen sulfide concentration value I with the hydrogen sulfide concentration value II, and triggering an alarm signal when the difference between the hydrogen sulfide concentration value I and the hydrogen sulfide concentration value II is greater than or equal to a preset maximum difference of the hydrogen sulfide concentration;
J. when the ammonia concentration value I and/or the ammonia concentration value II are/is larger than or equal to a preset ammonia concentration maximum value, triggering an alarm signal; and comparing the ammonia concentration value I with the ammonia concentration value II, and triggering an alarm signal when the difference between the ammonia concentration value I and the ammonia concentration value II is greater than or equal to a preset maximum ammonia concentration difference value.
The detection device further comprises an alarm module, wherein the alarm module comprises an alarm lamp and a loudspeaker, and the alarm lamp and the loudspeaker are respectively and electrically connected with the main controller; when an alarm signal is triggered, the warning lamp flickers, and meanwhile, the loudspeaker plays alarm voice.
The further improvement to the above scheme is that when the detection device is low in electric quantity or poor in communication signal, the reminding signal is triggered, the warning lamp is turned on, and meanwhile, the loudspeaker plays the reminding voice.
The invention has the beneficial effects that: the invention provides a wireless portable toxic gas detection system and a detection method thereof, wherein the system comprises a detection device, a wireless communication module, a background server and an intelligent terminal, wherein the detection device is in communication connection with the background server through the wireless communication module, and the intelligent terminal is in communication connection with the background server; the detection device comprises a main controller, a power supply, a first detection module and a second detection module; the first detection module and the second detection module respectively comprise a carbon monoxide detection module, a carbon dioxide detection module, a hydrogen sulfide detection module and an ammonia detection module; the power supply, the carbon monoxide detection module of the first detection module, the carbon dioxide detection module of the first detection module, the hydrogen sulfide detection module of the first detection module, the ammonia detection module of the first detection module, the carbon monoxide detection module of the second detection module, the carbon dioxide detection module of the second detection module, the hydrogen sulfide detection module of the second detection module and the ammonia detection module of the second detection module are respectively and electrically connected with the main controller; the carbon monoxide detection module is used for detecting the concentration of carbon monoxide in the air and converting the detected concentration of carbon monoxide into an electric signal; the carbon dioxide detection module is used for detecting the concentration of carbon dioxide in the air and converting the detected concentration of carbon dioxide into an electric signal; the hydrogen sulfide detection module is used for detecting the concentration of hydrogen sulfide in the air and converting the detected concentration of hydrogen sulfide into an electric signal; the ammonia gas detection module is used for detecting the ammonia gas concentration in the air and converting the detected ammonia gas concentration into an electric signal; the invention has the following advantages:
1. the detection device in the wireless portable toxic gas detection system is connected through wireless communication, so that the system is convenient to carry and detect, can check the detection result in real time through the intelligent terminal, is very convenient to use, is convenient to find problems in time, and is suitable for most toxic gas detection occasions;
2. the detection device comprises a first detection module and a second detection module, wherein the two detection modules are used for simultaneously detecting the toxic gas, when the detection result of one detection module is greater than or equal to a preset maximum value, an alarm signal is triggered, when the detection results of the two detection modules are too large, namely greater than or equal to a preset maximum difference value, the alarm signal is triggered, the inaccurate detection results caused by aging or damage of some detection modules can be effectively prevented, and therefore, the misdetection can be avoided, the accuracy of the detection results can be ensured, the mistake can be prevented, and the detection device is more suitable for the detection occasions of the toxic gas;
3. when danger exists, namely when the concentration of toxic gas is detected to be too high or a detection module has a problem, the alarm signal can be triggered, the alarm signal can play a role in warning people, the warning function plays a vital role, and the warning lamp and the loudspeaker are inevitably aged or even damaged.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a control schematic block diagram of the detecting device of the present invention.
FIG. 3 is a first schematic circuit diagram of the detecting device of the present invention.
FIG. 4 is a second schematic circuit diagram of the detecting device of the present invention.
FIG. 5 is a third schematic circuit diagram of the detecting device of the present invention.
FIG. 6 is a fourth schematic circuit diagram of the detecting device of the present invention.
Description of reference numerals: the device comprises a detection device 1, a main controller 11, an ATmega328 chip 111, an oscillator circuit 112, a restart circuit 113, a burning reminding circuit 114, a power supply voltage reduction circuit 115, a power supply 12, a first detection module 13, a carbon monoxide detection module 131, a carbon dioxide detection module 132, a hydrogen sulfide detection module 133, an ammonia detection module 134, a carbon monoxide detection circuit 135, a carbon monoxide detection chip 1351, a carbon dioxide detection circuit 136, a carbon dioxide detection chip 1361, a hydrogen sulfide detection circuit 137, a hydrogen sulfide detection chip 1371, an ammonia detection circuit 138, an ammonia detection chip 1381, a second detection module 14, a positioning module 15, a camera 16, a display device 17, a display circuit 171, a display chip 1711, an interphone 18, an alarm module 19, an alarm circuit 191, a warning lamp 1911, a loudspeaker 1912, a wireless communication module 2, a background server 3 and an intelligent terminal 4.
The specific implementation mode is as follows:
the invention is further described with reference to the accompanying drawings, as shown in fig. 1-6, the wireless portable toxic gas detection system of the invention comprises a detection device 1, a wireless communication module 2, a background server 3, and an intelligent terminal 4, wherein the intelligent terminal 4 is an intelligent mobile phone or a computer, the detection device 1 is in communication connection with the background server 3 through the wireless communication module 2, and the intelligent terminal 4 is in communication connection with the background server 3; the detection device 1 comprises a main controller 11, a power supply 12, a first detection module 13 and a second detection module 14; the first detection module 13 and the second detection module 14 each include a carbon monoxide detection module 131, a carbon dioxide detection module 132, a hydrogen sulfide detection module 133, and an ammonia detection module 134; the power supply 12, the carbon monoxide detection module 131 of the first detection module 13, the carbon dioxide detection module 132 of the first detection module 13, the hydrogen sulfide detection module 133 of the first detection module 13, the ammonia detection module 134 of the first detection module 13, the carbon monoxide detection module 131 of the second detection module 14, the carbon dioxide detection module 132 of the second detection module 14, the hydrogen sulfide detection module 133 of the second detection module 14, and the ammonia detection module 134 of the second detection module 14 are respectively electrically connected with the main controller 11; the carbon monoxide detection module 131 is configured to detect the concentration of carbon monoxide in the air and convert the detected concentration of carbon monoxide into an electrical signal; the carbon dioxide detection module 132 is configured to detect a concentration of carbon dioxide in air and convert the detected concentration of carbon dioxide into an electrical signal; the hydrogen sulfide detection module 133 is configured to detect a concentration of hydrogen sulfide in air and convert the detected concentration of hydrogen sulfide into an electrical signal; the ammonia gas detection module 134 is configured to detect an ammonia gas concentration in air and convert the detected ammonia gas concentration into an electrical signal; the detection device 1 in the wireless portable toxic gas detection system is connected through wireless communication, so that the system is convenient to carry and detect, detection results can be checked in real time through the intelligent terminal 4, the use is very convenient, problems can be found in time conveniently, and the system is suitable for most toxic gas detection occasions; the detection device 1 comprises a first detection module 13 and a second detection module 14, wherein the two detection modules are used for simultaneously detecting the toxic gas, when the detection result of one detection module is greater than or equal to a preset maximum value, an alarm signal is triggered, when the detection results of the two detection modules are too large, namely greater than or equal to a preset maximum difference value, the alarm signal is triggered, the inaccurate detection results caused by aging or damage of some detection modules can be effectively prevented, and therefore the misdetection can be avoided, the accuracy of the detection results can be ensured, the precaution can be prevented, and the detection device is more suitable for the detection occasions of the toxic gas.
The wireless communication module 2 is a NodeMCU module which is a programmable module and realizes the data link communication with mobile terminals such as mobile phones and clients by accessing a local area network or a wide area network, has the functions of remote data reading and writing and monitoring, and is more convenient to use; the main controller 11 comprises an ATmega328 chip 111, an oscillation circuit 112, a restart circuit 113 and a burning reminding circuit 114; the oscillation circuit 112 comprises a crystal oscillator X1, a ceramic chip capacitor F1 and a ceramic chip capacitor F2, wherein one end of the crystal oscillator X1 is divided into two paths, one path is electrically connected with an XLAT1 pin of the ATmega328 chip 111, the other path is electrically connected with one end of the ceramic chip capacitor F1, and the other end of the ceramic chip capacitor F1 is grounded; the other end of the crystal oscillator X1 is divided into two paths, wherein one path is electrically connected with an XLAT2 pin of the ATmega328 chip 111, the other path is electrically connected with one end of a ceramic chip capacitor F2, and the other end of the ceramic chip capacitor F2 is grounded; the restart circuit 113 comprises a RESET key S1, one end of the RESET key S1 is grounded, the other end of the RESET key S1 is divided into two paths, one path is electrically connected with a RESET pin of the ATmega328 chip 111, the other path is connected with a power supply VCC, and a resistor R1 is connected between the RESET key S1 and the power supply VCC in series; the burning reminding circuit 114 comprises an LED1, one end of an LED1 is electrically connected with a D13 pin of the ATmega328 chip 111, the other end of the LED1 is grounded, and a resistor R2 is connected between the LED1 and the ground in series; the oscillating circuit 112 of the invention is composed of a ceramic chip capacitor F1 of 22pf, a ceramic chip capacitor F2 of 22pf and a crystal oscillator X1 of 16M, and can provide a stable clock signal for the ATmega328 chip 111, thereby ensuring the stable work of the ATmega328 chip 111; the main controller 11 can be restarted by pressing a reset key S1 in the restart circuit 113, and the restart can be completed without power failure, so that the use is convenient; whether the code is burned successfully can be known through the flashing condition of the LED1 in the burning reminding circuit 114, so that debugging is facilitated.
The carbon monoxide detection module 131 comprises a carbon monoxide detection circuit 135, the carbon monoxide detection circuit 135 comprises a carbon monoxide detection chip 1351 and a ceramic chip capacitor F3, a power supply pin of the carbon monoxide detection chip 1351 is connected with a power supply VCC, a ground pin of the carbon monoxide detection chip 1351 is grounded, a signal output end of the carbon monoxide detection chip 1351 is electrically connected with a pin a0 of the ATmega328 chip 111, one end of the ceramic chip capacitor F3 is connected with the power supply VCC, the other end of the ceramic chip capacitor F3 is grounded, and the ceramic chip capacitor F3 is connected between the power supply VCC and the ground through the carbon monoxide detection circuit 135, so that the interference of power supply impurity signals to data transmission can be reduced, and the stability and the accuracy of data transmission can be ensured; the carbon dioxide detection module 132 comprises a carbon dioxide detection circuit 136, the carbon dioxide detection circuit 136 comprises a carbon dioxide detection chip 1361 and a ceramic chip capacitor F4, a power supply pin of the carbon dioxide detection chip 1361 is connected with a power supply VCC, a ground pin of the carbon dioxide detection chip 1361 is grounded, a signal output end of the carbon dioxide detection chip 1361 is electrically connected with a pin A1 of the ATmega328 chip 111, one end of the ceramic chip capacitor F4 is connected with the power supply VCC, the other end of the ceramic chip capacitor F4 is grounded, and the carbon dioxide detection circuit 136 is connected with the ceramic chip capacitor F4 between the power supply VCC and the ground, so that the interference of power supply impurity signals to data transmission can be reduced, and the stability and the accuracy of data; the hydrogen sulfide detection module 133 comprises a hydrogen sulfide detection circuit 137, the hydrogen sulfide detection circuit 137 comprises a hydrogen sulfide detection chip 1371 and a ceramic chip capacitor F5, a power supply pin of the hydrogen sulfide detection chip 1371 is connected with a power supply VCC, a ground pin of the hydrogen sulfide detection chip 1371 is grounded, a signal output end of the hydrogen sulfide detection chip 1371 is electrically connected with a pin A2 of the ATmega328 chip 111, one end of the ceramic chip capacitor F5 is connected with the power supply VCC, the other end of the ceramic chip capacitor F5 is grounded, the hydrogen sulfide detection circuit 137 is connected with the ceramic chip capacitor F5 between the power supply VCC and the ground, so that the interference of power supply impurity signals to data transmission can be reduced, and the stability and accuracy of data transmission can be ensured; ammonia gas detection module 134 includes ammonia detection circuitry 138, ammonia detection circuitry 138 includes ammonia detection chip 1381, ceramic chip electric capacity F6, ammonia detection chip 1381's power pin VCC that connects, ammonia detection chip 1381's ground connection pin ground connection, ammonia detection chip 1381's signal output part is connected with ATmega328 chip 111's A3 pin electricity, ceramic chip electric capacity F6's a termination power VCC, ceramic chip electric capacity F6's other end ground connection, ammonia detection circuitry 138 inserts ceramic chip electric capacity F6 between power VCC and ground, can reduce power supply impurity signal to data transmission's interference, thereby can ensure data transmission's stability and accuracy.
The detection device 1 further comprises an alarm module 19, wherein the alarm module 19 comprises a warning lamp 1911 and a loudspeaker 1912, and the warning lamp 1911 and the loudspeaker 1912 are respectively and electrically connected with the main controller 11; when an alarm signal is triggered, the warning light 1911 flashes, and at the same time, the speaker 1912 plays an alarm voice; when the power of the detection device 1 is low or the communication signal is poor, a reminding signal is triggered, the warning lamp 1911 is lightened, and meanwhile, a reminding voice is played by the loudspeaker 1912; when danger exists, namely when the concentration of toxic gas is detected to be too high or a detection module has a problem, the alarm signal can be triggered, the alarm signal can play a role in warning people, the warning function plays a vital role, and the warning lamp 1911 and the loudspeaker 1912 inevitably age or even damage; the alarm module 19 comprises an alarm circuit 191, the alarm circuit 191 comprises a warning lamp 1911, a loudspeaker 1912 and a triode PNP, one end of the warning lamp 1911 is electrically connected with a pin D8 of the ATmega328 chip 111, the other end of the warning lamp 1911 is connected with a power supply VCC, a resistor R3 is connected between the warning lamp 1911 and the power supply VCC in series, a base B of the triode PNP is electrically connected with a pin D9 of the ATmega328 chip 111, a collector C of the triode PNP is grounded, an emitter E of the triode PNP is connected with the power supply VCC, and the loudspeaker 1912 is connected between an emitter E of the triode PNP and the power supply VCC in series; because the current output from the pin 111D9 of the ATmega328 chip is not enough to drive the speaker 1912, the current output from the pin 111D9 of the ATmega328 chip is amplified by adding the transistor PNP, and when the base B of the transistor PNP receives a high level, the emitter E of the transistor PNP amplifies the input current and drives the speaker 1912 to generate sound.
The detection device 1 further comprises a display device 17 for displaying the detection result, the display device 17 is electrically connected with the main controller 11, information such as the detection result can be checked in real time through the display device 17, and the practicability is higher; the display device 17 comprises a display circuit 171, the display circuit 171 comprises a display chip 1711, a potentiometer P1, a VSS pin of the display chip 1711 is grounded, a ground pin of the potentiometer P1 is grounded, a RW pin of the display chip 1711 is grounded, a VDD pin of the display chip 1711 is connected with a power VCC, a VO pin of the display chip 1711 is electrically connected with an output pin of the potentiometer P1, a power pin of the potentiometer P1 is connected with the power VCC, an RS pin of the display chip 1711 is electrically connected with a D12 pin of the ATmega328 chip 111, an E pin of the display chip 1711 is electrically connected with a D11 pin of the ATmega328 chip 111, a DB4 pin of the display chip 1711 is electrically connected with a D7 pin of the ATmega328 chip 111, a DB5 pin of the display chip 1711 is electrically connected with a D6 pin of the ATmega chip 111, a DB6 pin of the display chip 1711 is electrically connected with a D5 pin of the ATmega chip 111, a DB 171 7 pin of the display chip 1711 is electrically connected with a VCC pin of the ATmega chip 1712 pin of the ATmega chip 328, the BGGND pin of the display chip 1711 is grounded; the RS pin of the display chip 1711 is used for selecting a register, the RW pin of the display chip 1711 is used for reading and writing a signal end, the EN pin of the display chip 1711 is used for enabling, the VO end of the display chip 1711 is connected with the potentiometer P1 of 10K, contrast adjustment can be carried out on the display device 17 through the adjustment potentiometer P1, the BGGND pin of the display chip 1711 can be connected or disconnected, display can be brighter if the BGGND pin is connected, display can be seen if the BGGND pin is not connected, but the display can be darker.
The detection device 1 further comprises a power supply voltage reduction circuit 115, wherein the power supply voltage reduction circuit 115 comprises a voltage stabilizer LM7805, an electrolytic capacitor F7, an electrolytic capacitor F8, a ceramic capacitor F9 and a ceramic capacitor F10, the input end of the LM7805 is electrically connected with 12V voltage, the output end of the LM7805 outputs 5V voltage and is electrically connected with a VCC (voltage conduction center) pin of the ATmega328 chip 111, the grounding pin of the LM7805 is grounded, one end of the electrolytic capacitor F7 is electrically connected with 12V voltage, the other end of the electrolytic capacitor F7 is grounded, one end of the ceramic capacitor F9 is electrically connected with 12V voltage, the other end of the ceramic capacitor F9 is grounded, one end of the electrolytic capacitor F8 is electrically connected with the output end of the LM7805, the other end of the electrolytic capacitor F8 is grounded, one end of the ceramic capacitor F10 is electrically connected with the output end; the LM7805 linear voltage stabilizer is adopted to reduce the voltage of 12V and stabilize the voltage to 5V, the use requirement of the circuit voltage can be met, and the power supply is filtered through the electrolytic capacitor F7, the electrolytic capacitor F8, the ceramic chip capacitor F9 and the ceramic chip capacitor F10, so that the stability of output can be ensured.
The detection device 1 further comprises a camera 16, the camera 16 is electrically connected with the main controller 11, the field condition can be checked in real time through the camera 16, and the practicability is higher; the detection device 1 further comprises an interphone 18, the interphone 18 is electrically connected with the main controller 11, communication can be carried out in real time through the interphone 18, and the practicability is higher; the detection device 1 further comprises a positioning module 15 for positioning the current position, the positioning module 15 is electrically connected with the main controller 11, and the position condition of the current detection area can be quickly known through the positioning module 15.
A toxic gas detection method, the method comprising the steps of:
A. presetting a carbon monoxide concentration highest value, a carbon dioxide concentration highest value, a hydrogen sulfide concentration highest value, an ammonia gas concentration highest value, a carbon monoxide concentration maximum difference value, a carbon dioxide concentration maximum difference value, a hydrogen sulfide concentration maximum difference value and an ammonia gas concentration maximum difference value;
B. moving the detecting device 1 to the required detecting area;
C. detecting the concentration of carbon monoxide in the air of the detection area through a carbon monoxide detection module 131 of a first detection module 13 in the detection device 1 to obtain a first carbon monoxide concentration value; meanwhile, the carbon monoxide concentration in the air of the detection area is detected by the carbon monoxide detection module 131 of the second detection module 14 in the detection device 1, so as to obtain a carbon monoxide concentration value two; sending the obtained first carbon monoxide concentration value and the obtained second carbon monoxide concentration value to the intelligent terminal 4 through the wireless transmission module and the background server 3;
D. detecting the concentration of carbon dioxide in the air of the detection area by the carbon dioxide detection module 132 of the first detection module 13 in the detection device 1 to obtain a carbon dioxide concentration value one; meanwhile, the carbon dioxide detection module 132 of the second detection module 14 in the detection device 1 detects the concentration of carbon dioxide in the air in the detection area to obtain a carbon dioxide concentration value two; sending the obtained carbon dioxide concentration value I and the obtained carbon dioxide concentration value II to the intelligent terminal 4 through the wireless transmission module and the background server 3;
E. detecting the concentration of hydrogen sulfide in the air of the detection area by a hydrogen sulfide detection module 133 of a first detection module 13 in the detection device 1 to obtain a first concentration value of hydrogen sulfide; meanwhile, the hydrogen sulfide concentration in the air of the detection area is detected by the hydrogen sulfide detection module 133 of the second detection module 14 in the detection device 1, so as to obtain a second hydrogen sulfide concentration value; sending the obtained hydrogen sulfide concentration value I and the obtained hydrogen sulfide concentration value II to an intelligent terminal 4 through a wireless transmission module and a background server 3;
F. detecting the ammonia concentration in the air of the detection area through an ammonia detection module 134 of a first detection module 13 in the detection device 1 to obtain a first ammonia concentration value; meanwhile, the ammonia gas detection module 134 of the second detection module 14 in the detection device 1 detects the ammonia gas concentration in the air in the detection area to obtain an ammonia gas concentration value two; sending the obtained ammonia concentration value I and ammonia concentration value II to the intelligent terminal 4 through the wireless transmission module and the background server 3;
G. when the carbon monoxide concentration value I and/or the carbon monoxide concentration value II are/is greater than or equal to a preset carbon monoxide concentration maximum value, triggering an alarm signal; comparing the carbon monoxide concentration value I with the carbon monoxide concentration value II, and triggering an alarm signal when the difference between the carbon monoxide concentration value I and the carbon monoxide concentration value II is greater than or equal to a preset maximum carbon monoxide concentration difference value;
H. when the carbon dioxide concentration value I and/or the carbon dioxide concentration value II are/is larger than or equal to a preset carbon dioxide concentration maximum value, triggering an alarm signal; comparing the carbon dioxide concentration value I with the carbon dioxide concentration value II, and triggering an alarm signal when the difference between the carbon dioxide concentration value I and the carbon dioxide concentration value II is greater than or equal to a preset maximum difference of the carbon dioxide concentration;
I. when the concentration value I of the hydrogen sulfide and/or the concentration value II of the hydrogen sulfide are/is larger than or equal to the preset highest value of the concentration of the hydrogen sulfide, triggering an alarm signal; comparing the hydrogen sulfide concentration value I with the hydrogen sulfide concentration value II, and triggering an alarm signal when the difference between the hydrogen sulfide concentration value I and the hydrogen sulfide concentration value II is greater than or equal to a preset maximum difference of the hydrogen sulfide concentration;
J. when the ammonia concentration value I and/or the ammonia concentration value II are/is larger than or equal to a preset ammonia concentration maximum value, triggering an alarm signal; and comparing the ammonia concentration value I with the ammonia concentration value II, and triggering an alarm signal when the difference between the ammonia concentration value I and the ammonia concentration value II is greater than or equal to a preset maximum ammonia concentration difference value.
The working principle is as follows:
moving the detection device 1 to a required detection area, and simultaneously detecting the concentration of carbon monoxide in the air of the area to be detected respectively by a carbon monoxide detection module 131 of a first detection module 13 and a carbon monoxide detection module 131 of a second detection module 14 in the detection device 1, and obtaining a carbon monoxide concentration value I and a carbon monoxide concentration value II; the carbon dioxide detection module 132 of the first detection module 13 and the carbon dioxide detection module 132 of the second detection module 14 in the detection apparatus 1 respectively and simultaneously detect the carbon dioxide concentration in the air of the area to be detected, and obtain a carbon dioxide concentration value one and a carbon dioxide concentration value two; a hydrogen sulfide detection module 133 of a first detection module 13 and a hydrogen sulfide detection module 133 of a second detection module 14 in the detection device 1 respectively and simultaneously detect the concentration of hydrogen sulfide in the air of an area to be detected, and obtain a first hydrogen sulfide concentration value and a second hydrogen sulfide concentration value; an ammonia gas detection module 134 of a first detection module 13 and an ammonia gas detection module 134 of a second detection module 14 in the detection device 1 respectively and simultaneously detect the ammonia gas concentration in the air of a region to be detected, and obtain an ammonia gas concentration value I and an ammonia gas concentration value II; the detection device 1 sends each detection result to the intelligent terminal 4 through the cooperation of the wireless communication module 2 and the background server 3; when the carbon monoxide concentration value I and/or the carbon monoxide concentration value II are/is greater than or equal to a preset carbon monoxide concentration maximum value, triggering an alarm signal; when the difference between the first carbon monoxide concentration value and the second carbon monoxide concentration value is greater than or equal to a preset maximum carbon monoxide concentration difference value, triggering an alarm signal; when the carbon dioxide concentration value I and/or the carbon dioxide concentration value II are/is larger than or equal to a preset carbon dioxide concentration maximum value, triggering an alarm signal; when the difference between the carbon dioxide concentration value I and the carbon dioxide concentration value II is larger than or equal to the preset maximum difference of the carbon dioxide concentration, triggering an alarm signal; when the concentration value I of the hydrogen sulfide and/or the concentration value II of the hydrogen sulfide are/is larger than or equal to the preset highest value of the concentration of the hydrogen sulfide, triggering an alarm signal; when the difference between the first hydrogen sulfide concentration value and the second hydrogen sulfide concentration value is larger than or equal to the preset maximum difference of the hydrogen sulfide concentrations, triggering an alarm signal; when the ammonia concentration value I and/or the ammonia concentration value II are/is larger than or equal to a preset ammonia concentration maximum value, triggering an alarm signal; when the difference between the ammonia concentration value I and the ammonia concentration value II is greater than or equal to a preset maximum difference of the ammonia concentration, triggering an alarm signal; the wireless portable toxic gas detection system is portable, convenient to use, high in reliability and capable of being well applied to detection of toxic gas.
It is understood that the above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, features and principles described in the present invention are included in the scope of the present invention.
Claims (10)
1. A wireless portable toxic gas detection system, its characterized in that: the system comprises a detection device (1), a wireless communication module (2), a background server (3) and an intelligent terminal (4), wherein the detection device (1) is in communication connection with the background server (3) through the wireless communication module (2), and the intelligent terminal (4) is in communication connection with the background server (3); the detection device (1) comprises a main controller (11), a power supply (12), a first detection module (13) and a second detection module (14); the first detection module (13) and the second detection module (14) respectively comprise a carbon monoxide detection module (131), a carbon dioxide detection module (132), a hydrogen sulfide detection module (133) and an ammonia detection module (134); the power supply (12), the carbon monoxide detection module (131) of the first detection module (13), the carbon dioxide detection module (132) of the first detection module (13), the hydrogen sulfide detection module (133) of the first detection module (13), the ammonia detection module (134) of the first detection module (13), the carbon monoxide detection module (131) of the second detection module (14), the carbon dioxide detection module (132) of the second detection module (14), the hydrogen sulfide detection module (133) of the second detection module (14) and the ammonia detection module (134) of the second detection module (14) are respectively and electrically connected with the main controller (11); the carbon monoxide detection module (131) is used for detecting the concentration of carbon monoxide in the air and converting the detected concentration of carbon monoxide into an electric signal; the carbon dioxide detection module (132) is used for detecting the concentration of carbon dioxide in the air and converting the detected concentration of carbon dioxide into an electric signal; the hydrogen sulfide detection module (133) is used for detecting the concentration of hydrogen sulfide in the air and converting the detected concentration of hydrogen sulfide into an electric signal; the ammonia gas detection module (134) is used for detecting the ammonia gas concentration in the air and converting the detected ammonia gas concentration into an electric signal.
2. A wireless portable toxic gas detection system according to claim 1, wherein: the wireless communication module (2) is a NodeMCU module; the main controller (11) comprises an ATmega328 chip (111), an oscillation circuit (112), a restart circuit (113) and a burning reminding circuit (114); the oscillation circuit (112) comprises a crystal oscillator X1, a ceramic chip capacitor F1 and a ceramic chip capacitor F2, wherein one end of the crystal oscillator X1 is divided into two paths, one path is electrically connected with an XLAT1 pin of the ATmega328 chip (111), the other path is electrically connected with one end of the ceramic chip capacitor F1, and the other end of the ceramic chip capacitor F1 is grounded; the other end of the crystal oscillator X1 is divided into two paths, wherein one path is electrically connected with an XLAT2 pin of an ATmega328 chip (111), the other path is electrically connected with one end of a ceramic chip capacitor F2, and the other end of the ceramic chip capacitor F2 is grounded; the restarting circuit (113) comprises a RESET key S1, one end of the RESET key S1 is grounded, the other end of the RESET key S1 is divided into two paths, one path is electrically connected with a RESET pin of the ATmega328 chip (111), the other path is connected with a power supply VCC, and a resistor R1 is connected between the RESET key S1 and the power supply VCC in series; the burning reminding circuit (114) comprises an LED1, one end of an LED1 is electrically connected with a D13 pin of the ATmega328 chip (111), the other end of the LED1 is grounded, and a resistor R2 is connected between the LED1 and the ground in series.
3. A wireless portable toxic gas detection system according to claim 2, wherein: the carbon monoxide detection module (131) comprises a carbon monoxide detection circuit (135), the carbon monoxide detection circuit (135) comprises a carbon monoxide detection chip (1351) and a ceramic chip capacitor F3, a power supply pin of the carbon monoxide detection chip (1351) is connected with a power supply VCC, a grounding pin of the carbon monoxide detection chip (1351) is grounded, a signal output end of the carbon monoxide detection chip (1351) is electrically connected with a pin A0 of an ATmega328 chip (111), one end of a ceramic chip capacitor F3 is connected with the power supply VCC, and the other end of the ceramic chip capacitor F3 is grounded; the carbon dioxide detection module (132) comprises a carbon dioxide detection circuit (136), the carbon dioxide detection circuit (136) comprises a carbon dioxide detection chip (1361) and a ceramic chip capacitor F4, a power supply pin of the carbon dioxide detection chip (1361) is connected with a power supply VCC, a grounding pin of the carbon dioxide detection chip (1361) is grounded, a signal output end of the carbon dioxide detection chip (1361) is electrically connected with a pin A1 of the ATmega328 chip (111), one end of the ceramic chip capacitor F4 is connected with the power supply VCC, and the other end of the ceramic chip capacitor F4 is grounded; the hydrogen sulfide detection module (133) comprises a hydrogen sulfide detection circuit (137), the hydrogen sulfide detection circuit (137) comprises a hydrogen sulfide detection chip (1371) and a ceramic chip capacitor F5, a power supply pin of the hydrogen sulfide detection chip (1371) is connected with a power supply VCC, a grounding pin of the hydrogen sulfide detection chip (1371) is grounded, a signal output end of the hydrogen sulfide detection chip (1371) is electrically connected with a pin A2 of the ATmega328 chip (111), one end of the ceramic chip capacitor F5 is connected with the power supply VCC, and the other end of the ceramic chip capacitor F5 is grounded; ammonia gas detection module (134) includes ammonia detection circuitry (138), ammonia detection circuitry (138) include ammonia and detect chip (1381), ceramic chip electric capacity F6, the ammonia detects the power pin VCC of chip (1381), the ammonia detects the ground connection of the ground connection pin of chip (1381), the ammonia detects the signal output part of chip (1381) and the A3 pin electricity of ATmega328 chip (111) and is connected, a termination power VCC of ceramic chip electric capacity F6, ceramic chip electric capacity F6's other end ground connection.
4. A wireless portable toxic gas detection system according to claim 2, wherein: the detection device (1) further comprises an alarm module (19), the alarm module (19) comprises a warning lamp (1911) and a loudspeaker (1912), and the warning lamp (1911) and the loudspeaker (1912) are electrically connected with the main controller (11) respectively; alarm module (19) are including alarm circuit (191), alarm circuit (191) are including warning light (1911), speaker (1912), triode PNP, the one end of warning light (1911) is connected with the D8 pin electricity of ATmega328 chip (111), another termination power VCC of warning light (1911), it has resistance R3 to concatenate between warning light (1911) and the power VCC, triode PNP's base B is connected with the D9 pin electricity of ATmega328 chip (111), triode PNP's collecting electrode C ground connection, triode PNP's projecting pole E connects power VCC, speaker (1912) concatenate between triode PNP's projecting pole E and power VCC.
5. A wireless portable toxic gas detection system according to claim 2, wherein: the detection device (1) further comprises a display device (17) for displaying the detection result, and the display device (17) is electrically connected with the main controller (11); the display device (17) comprises a display circuit (171), the display circuit (171) comprises a display chip (1711) and a potentiometer P1, a VSS pin of the display chip (1711) is grounded, a ground pin of the potentiometer P1 is grounded, a RW pin of the display chip (1711) is grounded, a VDD pin of the display chip (1711) is connected with a power VCC, a VO pin of the display chip (1711) is electrically connected with an output pin of the potentiometer P1, a power pin of the potentiometer P1 is connected with the power VCC, an RS pin of the display chip (1711) is electrically connected with a D12 pin of the ATmega328 chip (111), an E pin of the display chip (1711) is electrically connected with a D11 pin of the ATmega328 chip (111), a 4 pin of the display chip (1711) is electrically connected with a D7 pin of the ATmega DB 328 chip (111), a DB 171 5 pin of the display chip (1711) is electrically connected with a D6 pin of the ATmega chip (111), and a DB pin of the display chip (6) is electrically connected with a DB pin of the ATmega chip (36 5), the DB7 pin of the display chip (1711) is electrically connected with the D4 pin of the ATmega328 chip (111), the BGVCC pin of the display chip (1711) is connected with a power supply, and the BGGND pin of the display chip (1711) is grounded.
6. A wireless portable toxic gas detection system according to claim 2, wherein: the detection device (1) further comprises a power supply voltage reduction circuit (115), the power supply voltage reduction circuit (115) comprises a voltage stabilizer LM7805, an electrolytic capacitor F7, an electrolytic capacitor F8, a ceramic chip capacitor F9 and a ceramic chip capacitor F10, wherein the input end of the LM7805 is electrically connected with 12V voltage, the output end of the LM7805 outputs 5V voltage and is electrically connected with a VCC pin of an ATmega328 chip (111), a grounding pin of the LM7805 is grounded, one end of the electrolytic capacitor F7 is electrically connected with the 12V voltage, the other end of the electrolytic capacitor F7 is grounded, one end of the ceramic chip capacitor F9 is electrically connected with the 12V voltage, the other end of the ceramic chip capacitor F9 is grounded, one end of the electrolytic capacitor F8 is electrically connected with the output end of the LM7805, the other end of the electrolytic capacitor F8 is grounded, one end of the ceramic chip capacitor F10 is electrically connected with the output end.
7. A wireless portable toxic gas detection system according to claim 1, wherein: the detection device (1) further comprises a camera (16), an interphone (18) and a positioning module (15) used for positioning the current position, wherein the camera (16), the interphone (18) and the positioning module (15) are respectively and electrically connected with the main controller (11).
8. The toxic gas detection method of claim 1, comprising the steps of:
A. presetting a carbon monoxide concentration highest value, a carbon dioxide concentration highest value, a hydrogen sulfide concentration highest value, an ammonia gas concentration highest value, a carbon monoxide concentration maximum difference value, a carbon dioxide concentration maximum difference value, a hydrogen sulfide concentration maximum difference value and an ammonia gas concentration maximum difference value;
B. moving the detection device (1) into a desired detection area;
C. detecting the concentration of carbon monoxide in the air of a detection area through a carbon monoxide detection module (131) of a first detection module (13) in a detection device (1) to obtain a first carbon monoxide concentration value; meanwhile, the carbon monoxide concentration in the air of the detection area is detected by a carbon monoxide detection module (131) of a second detection module (14) in the detection device (1), and a carbon monoxide concentration value II is obtained; sending the obtained first carbon monoxide concentration value and the obtained second carbon monoxide concentration value to an intelligent terminal (4) through a wireless transmission module and a background server (3);
D. detecting the concentration of carbon dioxide in the air of a detection area through a carbon dioxide detection module (132) of a first detection module (13) in the detection device (1) to obtain a carbon dioxide concentration value I; meanwhile, detecting the concentration of carbon dioxide in the air of a detection area through a carbon dioxide detection module (132) of a second detection module (14) in the detection device (1) to obtain a carbon dioxide concentration value II; sending the obtained carbon dioxide concentration value I and the obtained carbon dioxide concentration value II to an intelligent terminal (4) through a wireless transmission module and a background server (3);
E. detecting the concentration of hydrogen sulfide in the air of a detection area through a hydrogen sulfide detection module (133) of a first detection module (13) in a detection device (1) to obtain a first concentration value of hydrogen sulfide; meanwhile, detecting the concentration of hydrogen sulfide in the air of a detection area through a hydrogen sulfide detection module (133) of a second detection module (14) in the detection device (1) to obtain a concentration value II of hydrogen sulfide; sending the obtained hydrogen sulfide concentration value I and the obtained hydrogen sulfide concentration value II to an intelligent terminal (4) through a wireless transmission module and a background server (3);
F. detecting the ammonia concentration in the air of a detection area through an ammonia detection module (134) of a first detection module (13) in the detection device (1) to obtain a first ammonia concentration value; meanwhile, detecting the ammonia concentration in the air of the detection area through an ammonia detection module (134) of a second detection module (14) in the detection device (1) to obtain an ammonia concentration value II; sending the obtained ammonia concentration value I and ammonia concentration value II to an intelligent terminal (4) through a wireless transmission module and a background server (3);
G. when the carbon monoxide concentration value I and/or the carbon monoxide concentration value II are/is greater than or equal to a preset carbon monoxide concentration maximum value, triggering an alarm signal; comparing the carbon monoxide concentration value I with the carbon monoxide concentration value II, and triggering an alarm signal when the difference between the carbon monoxide concentration value I and the carbon monoxide concentration value II is greater than or equal to a preset maximum carbon monoxide concentration difference value;
H. when the carbon dioxide concentration value I and/or the carbon dioxide concentration value II are/is larger than or equal to a preset carbon dioxide concentration maximum value, triggering an alarm signal; comparing the carbon dioxide concentration value I with the carbon dioxide concentration value II, and triggering an alarm signal when the difference between the carbon dioxide concentration value I and the carbon dioxide concentration value II is greater than or equal to a preset maximum difference of the carbon dioxide concentration;
I. when the concentration value I of the hydrogen sulfide and/or the concentration value II of the hydrogen sulfide are/is larger than or equal to the preset highest value of the concentration of the hydrogen sulfide, triggering an alarm signal; comparing the hydrogen sulfide concentration value I with the hydrogen sulfide concentration value II, and triggering an alarm signal when the difference between the hydrogen sulfide concentration value I and the hydrogen sulfide concentration value II is greater than or equal to a preset maximum difference of the hydrogen sulfide concentration;
J. when the ammonia concentration value I and/or the ammonia concentration value II are/is larger than or equal to a preset ammonia concentration maximum value, triggering an alarm signal; and comparing the ammonia concentration value I with the ammonia concentration value II, and triggering an alarm signal when the difference between the ammonia concentration value I and the ammonia concentration value II is greater than or equal to a preset maximum ammonia concentration difference value.
9. The toxic gas detection method of claim 8, wherein: the detection device (1) further comprises an alarm module (19), the alarm module (19) comprises a warning lamp (1911) and a loudspeaker (1912), and the warning lamp (1911) and the loudspeaker (1912) are electrically connected with the main controller (11) respectively; when an alarm signal is triggered, the warning lamp (1911) blinks, and at the same time, the speaker (1912) plays an alarm voice.
10. The toxic gas detection method of claim 9, wherein: when the detection device (1) is low in electric quantity or poor in communication signal, a reminding signal is triggered, the warning lamp (1911) is lightened, and meanwhile, the loudspeaker (1912) plays reminding voice.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156737A (en) * | 2015-09-18 | 2015-12-16 | 南京工程学院 | Voice-coil-motor-driven pilot servo valve control system and control method |
| CN107770501A (en) * | 2017-11-20 | 2018-03-06 | 哈尔滨东方报警设备开发有限公司 | A kind of video monitoring gas applied to restricted clearance detects prior-warning device |
| CN109314870A (en) * | 2017-04-01 | 2019-02-05 | 华为技术有限公司 | Wireless signal detection method and terminal device |
| CN109572758A (en) * | 2018-11-19 | 2019-04-05 | 褚敏 | Railway Site operation safety management system |
| CN110057971A (en) * | 2018-12-18 | 2019-07-26 | 天津理工大学 | A kind of multiple groups part monitoring poisonous gas device based on Internet of Things |
| CN111492255A (en) * | 2017-12-19 | 2020-08-04 | Lg伊诺特有限公司 | Sensing device, rotor and method for determining the presence of an abnormality in a sensor |
-
2020
- 2020-11-09 CN CN202011238298.1A patent/CN112326890A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156737A (en) * | 2015-09-18 | 2015-12-16 | 南京工程学院 | Voice-coil-motor-driven pilot servo valve control system and control method |
| CN109314870A (en) * | 2017-04-01 | 2019-02-05 | 华为技术有限公司 | Wireless signal detection method and terminal device |
| CN107770501A (en) * | 2017-11-20 | 2018-03-06 | 哈尔滨东方报警设备开发有限公司 | A kind of video monitoring gas applied to restricted clearance detects prior-warning device |
| CN111492255A (en) * | 2017-12-19 | 2020-08-04 | Lg伊诺特有限公司 | Sensing device, rotor and method for determining the presence of an abnormality in a sensor |
| CN109572758A (en) * | 2018-11-19 | 2019-04-05 | 褚敏 | Railway Site operation safety management system |
| CN110057971A (en) * | 2018-12-18 | 2019-07-26 | 天津理工大学 | A kind of multiple groups part monitoring poisonous gas device based on Internet of Things |
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Application publication date: 20210205 |