CN104535628A - Method and device for acquiring gas concentration - Google Patents
Method and device for acquiring gas concentration Download PDFInfo
- Publication number
- CN104535628A CN104535628A CN201410794969.0A CN201410794969A CN104535628A CN 104535628 A CN104535628 A CN 104535628A CN 201410794969 A CN201410794969 A CN 201410794969A CN 104535628 A CN104535628 A CN 104535628A
- Authority
- CN
- China
- Prior art keywords
- concentration
- target gas
- gas
- concentration index
- voltage signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 42
- 239000007789 gas Substances 0.000 claims description 264
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 45
- 239000012080 ambient air Substances 0.000 claims description 41
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 30
- 238000001514 detection method Methods 0.000 claims description 24
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 11
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 11
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 7
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 7
- 238000006479 redox reaction Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 3
- 230000000875 corresponding effect Effects 0.000 description 29
- 239000003570 air Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000006722 reduction reaction Methods 0.000 description 5
- 231100000331 toxic Toxicity 0.000 description 5
- 230000002588 toxic effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000015654 memory Effects 0.000 description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 2
- 230000001473 noxious effect Effects 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
The invention relates to the technical field of measurement, and discloses a method and a device for acquiring gas concentration. The method comprises the steps that concentration of target gas in the current environmental air is converted into a voltage signal by virtue of an electrochemical sensor, and the target gas is detected gas corresponding to the type of the electrochemical sensor; the voltage signal is subjected to analog-digital conversion to acquire the concentration index of the target gas, and the concentration index is used for indicating the percentage of the target gas in the current environmental air; the concentration index is output to preset output equipment to ensure that a user can check the concentration of the target gas in the current environmental air. According to the embodiment, the concentration index of the target gas in the current environment can be effectively detected, and the concentration index is output to ensure that the concentration of the target gas in the current environment can be checked by the user.
Description
Technical Field
The invention relates to the technical field of measurement, in particular to a method and a device for acquiring gas concentration.
Background
With the improvement of living standard, automobiles become main transportation tools in daily life of users, and great convenience is brought to the users. Meanwhile, the quality of air in the vehicle is also concerned more and more, for example, a new vehicle which is bought only or an automobile which is exposed to strong sunlight may have serious air pollution problem in the vehicle, so that various harmful gases such as formaldehyde, carbon monoxide and the like exceed standards. However, in real life, a user cannot know whether harmful gas exists in the vehicle or whether the harmful gas exceeds the standard, and if the user is in an environment where the harmful gas seriously exceeds the standard for a long time, the physical health of the user can be seriously damaged.
Disclosure of Invention
The invention aims to provide a method and a device for acquiring gas concentration, which can effectively detect the concentration index of target gas in the current environment.
The invention provides a method for acquiring gas concentration, which comprises the following steps:
converting, by an electrochemical sensor, a concentration of a target gas in current ambient air into a voltage signal, the target gas being a detected gas corresponding to a type of the electrochemical sensor;
performing analog-to-digital conversion on the voltage signal to obtain a concentration index of the target gas, wherein the concentration index is used for representing the percentage of the target gas in the current ambient air;
and outputting the concentration index to preset output equipment so that a user can check the concentration of the target gas in the current ambient air.
Correspondingly, the invention also provides a gas concentration acquisition device, which comprises:
the signal acquisition module is used for converting the concentration of target gas in the current ambient air into a voltage signal through an electrochemical sensor, wherein the target gas is detected gas corresponding to the type of the electrochemical sensor;
the signal conversion module is used for performing analog-to-digital conversion on the voltage signal acquired by the signal acquisition module to acquire a concentration index of the target gas, wherein the concentration index is used for representing the percentage of the target gas in the current ambient air;
and the output module is used for outputting the concentration index to preset output equipment so that a user can check the concentration of the target gas in the current ambient air.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the concentration of the target gas in the current environment can be converted into the voltage signal through the electrochemical sensor, and the voltage signal is subjected to analog-to-digital conversion, so that the concentration index of the target gas is obtained, the concentration index of the target gas in the current environment can be effectively detected, and the concentration index is output, so that a user can check the concentration of the target gas in the current environment.
Drawings
In order to more clearly illustrate the present invention or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for obtaining a gas concentration according to the present invention;
FIG. 2 is a schematic flow chart of another method for obtaining gas concentration provided by the present invention;
FIG. 3 is a schematic structural diagram of an apparatus for obtaining a gas concentration according to the present invention;
FIG. 4 is a schematic structural diagram of another gas concentration obtaining device provided by the present invention;
fig. 5 is a schematic structural diagram of a vehicle detection device provided by the invention.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a method and a device for acquiring gas concentration and vehicle detection equipment, which are used for detecting the concentration index of harmful gas in the current environment. The following are detailed below.
Referring to fig. 1, fig. 1 is a schematic flow chart of a method for obtaining a gas concentration according to the present invention, which can be applied to a vehicle detection device. The method for acquiring the gas concentration shown in fig. 1 may include the following steps.
S101: converting, by an electrochemical sensor, a concentration of a target gas in current ambient air into a voltage signal, the target gas being a detected gas corresponding to a type of the electrochemical sensor.
It should be noted that the type of the electrochemical sensor includes, but is not limited to, any one of a formaldehyde sensor, a benzene sensor, a hydrogen sulfide gas sensor, a carbon monoxide gas sensor, and a sulfur dioxide sensor.
S102: and performing analog-to-digital conversion on the voltage signal to obtain a concentration index of the target gas, wherein the concentration index is used for representing the percentage of the target gas in the current ambient air.
In a specific embodiment, a voltage signal obtained by the electrochemical sensor according to the concentration of the target gas in the current ambient air is an analog signal, and after the analog voltage signal is obtained, analog-to-digital conversion needs to be performed on the analog voltage signal, so that the concentration index of the target gas is obtained. For example, the analog voltage signal is subjected to analog-to-digital conversion by a preset analog-to-digital (AD) converter to obtain a digital signal, and the digital signal is processed by a single chip microcomputer to obtain the concentration index of the target gas.
S103: and outputting the concentration index to preset output equipment so that a user can check the concentration of the target gas in the current ambient air.
After obtaining the concentration index of the target gas in the current ambient air, the concentration index may also be output to a preset output device, such as a vehicle detection device disposed in an automobile, or a preset terminal device (e.g., a mobile phone, a tablet computer, etc.), so that a user can know the concentration of the target gas in the current ambient air.
Optionally, the output device may also be a preset server, and after the concentration index of the target gas is obtained, the concentration index of the target gas may be uploaded to the preset server, and the server stores the concentration index for the user to view. Specifically, user equipment such as a mobile phone and a tablet computer can establish a binding relationship with the server in advance, and when a user wants to check the gas components in the vehicle, the user can log in the server through the user equipment such as the mobile phone, so that the concentration index of the target gas stored in the server can be checked; alternatively, the server may push the stored concentration index of the target gas to the bound user equipment at preset time intervals, for example, every 24 hours.
Further optionally, after receiving the uploaded target gas concentration index, the server may further detect whether the target gas concentration index exceeds a preset gas concentration threshold, and when detecting that the target gas concentration index exceeds the preset gas concentration threshold, push the target gas concentration index information to the user, where the gas concentration threshold corresponds to the target gas, that is, different gas concentration thresholds may be set for different target gases in advance. Specifically, when the server detects that the concentration index of the target gas exceeds a preset gas concentration threshold, the server can mark the concentration index of the target gas to highlight the concentration index, and push the marked concentration index information to the bound user equipment to remind the user that the target gas exceeds the standard. The marking mode comprises giving an alarm or performing color highlighting marking on the output concentration index and the like, so that the server is triggered to push the concentration index information to the user equipment in a pushing mode of audio (namely, executing the alarm), short messages, graphs and the like.
By implementing the embodiment of the invention, the concentration of the target gas in the current environment can be converted into the voltage signal through the electrochemical sensor, and the voltage signal is subjected to analog-to-digital conversion, so that the concentration index of the target gas is obtained, the concentration index of the target gas in the current environment can be effectively detected, and the concentration index is output, so that a user can check the concentration of the target gas in the current environment.
Referring to fig. 2, fig. 2 is a schematic flow chart of another method for acquiring a gas concentration according to the present invention, and specifically, the method for acquiring a gas concentration shown in fig. 2 may include the following steps.
S201: when the target gas is in contact with the electrochemical sensor, a voltage signal generated by an oxidation reaction or a reduction reaction occurring on the surface of the detection electrode is acquired.
The electrochemical sensor is composed of a cathode and an anode, the cathode is a detection electrode, and when the concentration of the target gas in the current ambient air is obtained, a voltage signal, which is a voltage value corresponding to the concentration of the target gas, can be obtained by the electrochemical sensor configured in advance. Wherein the voltage signal is proportional to the concentration of the target gas in the current environment, the target gas being a detected gas corresponding to the type of the electrochemical sensor, typically a flammable, toxic or harmful gas. The types of electrochemical sensors may include formaldehyde sensors, benzene sensors, hydrogen sulfide gas sensors, carbon monoxide gas sensors, and sulfur dioxide sensors, among others. For example, if the electrochemical sensor is a formaldehyde sensor, the target gas is a detected gas corresponding to the formaldehyde sensor, that is, formaldehyde.
Specifically, since combustible, toxic and harmful gases have electrochemical activity, when the target gas contacts the electrochemical sensor, the target gas can be electrochemically oxidized or reduced, that is, an oxidation reaction and/or a reduction reaction occurs on the surface of the detection electrode, and through the oxidation reaction and/or the reduction reaction, the gas components of the ambient air can be distinguished, and the concentration of the target gas in the current environment is converted into a voltage signal, so that the concentration of the target gas can be detected.
Further, in an alternative embodiment, a plurality of different types of electrochemical sensors may be disposed, such as a formaldehyde sensor, a benzene sensor, a carbon monoxide sensor, and the like, and are disposed at the same time, and are used for detecting voltage signals corresponding to the concentrations of harmful gases in ambient air, such as formaldehyde, benzene, carbon monoxide, and the like in air in a vehicle.
S202: and converting the voltage signal into a digital signal through a preset analog-to-digital (AD) converter.
S203: and transmitting the digital signal to a singlechip connected with the AD converter, and carrying out data processing on the digital signal through the singlechip to obtain the concentration index of the target gas.
In a specific embodiment, the voltage signal corresponding to the concentration of the target gas obtained by the electrochemical sensor is an analog signal, and after the analog voltage signal is obtained, analog-to-digital conversion needs to be performed on the voltage signal, so as to obtain the concentration index of the target gas.
Specifically, the analog voltage signal may be subjected to analog-to-digital conversion by a preset analog-to-digital AD converter, so as to obtain a digital signal corresponding to the voltage signal. After the digital signal is obtained, the digital signal can be subjected to data processing through the single chip microcomputer, so that the concentration index of the target gas is obtained. Optionally, the type of the single chip microcomputer may be 89C51, and the embodiment of the present invention is not limited.
S204: and judging whether the concentration index of the target gas exceeds a preset gas concentration threshold value, wherein the gas concentration threshold value corresponds to the target gas.
S205: and if the gas concentration threshold is exceeded, marking the concentration index of the target gas so as to highlight the concentration index.
S206: and outputting the marked concentration index and the name of the target gas to preset output equipment in a correlation manner.
In particular embodiments, corresponding gas concentration thresholds may also be preset for different target gases, such as noxious gases. After the concentration index of the harmful gas in the current ambient air is obtained, whether the concentration index of the harmful gas exceeds a gas concentration threshold corresponding to the harmful gas can be further detected, when the concentration index of the harmful gas exceeds the threshold, the concentration index of the harmful gas is marked, the marked concentration index is output to preset output equipment, and meanwhile, the name of the harmful gas is output at the output equipment, so that a user can check the concentration of the harmful gas in the current ambient air, and corresponding measures are taken. Specifically, the marking mode includes giving an alarm or highlighting a color of the output density index, and the like, and the alarm mode may specifically be a light alarm or a sound alarm, which is not limited in the embodiment of the present invention.
Optionally, the preset output device may be a vehicle detection device disposed in an automobile, or may be a preset terminal device, such as a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), and the like, or may be a preset server.
Further optionally, after the concentration index of the target gas in the air in the vehicle is obtained, the concentration index of the target gas can be uploaded to a preset server, and the concentration index is stored by the server for a user to view. Specifically, user equipment such as a mobile phone and a tablet computer can establish a binding relationship with the server in advance, and when a user wants to check the gas components in the vehicle, the user can log in the server through the user equipment such as the mobile phone, so that the concentration index of the target gas stored in the server can be checked; alternatively, the server may push the stored concentration index of the target gas to the bound user equipment at preset time intervals, for example, every 24 hours.
According to the embodiment of the invention, the concentration of the harmful gas in the current environment is converted into the voltage value through the electrochemical sensor, and the voltage value is subjected to analog-to-digital conversion, so that the concentration index of the harmful gas is obtained, the concentration index of the harmful gas in the current environment can be effectively detected, and when the concentration index of the harmful gas is detected to exceed the preset threshold value, the concentration index is marked to remind a user that the harmful gas in the environment air in the vehicle exceeds the standard, so that corresponding measures are taken.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a terminal according to the present invention, where the terminal includes a signal obtaining module 11, a signal converting module 12, and an output module 13. Wherein,
the signal obtaining module 11 is configured to convert a concentration of a target gas in current ambient air into a voltage signal through an electrochemical sensor, where the target gas is a detected gas corresponding to a type of the electrochemical sensor.
It should be noted that the type of the electrochemical sensor includes, but is not limited to, any one of a formaldehyde sensor, a benzene sensor, a hydrogen sulfide gas sensor, a carbon monoxide gas sensor, and a sulfur dioxide sensor.
The signal conversion module 12 is configured to perform analog-to-digital conversion on the voltage signal acquired by the signal acquisition module 11 to obtain a concentration index of the target gas, where the concentration index is used to represent a percentage of the target gas in the current ambient air.
In a specific embodiment, a voltage signal obtained by the electrochemical sensor according to the concentration of the target gas in the current ambient air is an analog signal, and after the analog voltage signal is obtained by the signal obtaining module 11, the analog voltage signal needs to be subjected to analog-to-digital conversion by the signal conversion module 12, so as to obtain the concentration index of the target gas. For example, the signal conversion module 12 may perform analog-to-digital conversion on the analog voltage signal through a preset analog-to-digital AD converter to obtain a digital signal, and process the digital signal through a single chip to obtain the concentration index of the target gas.
The output module 13 is configured to output the concentration index to a preset output device, so that a user can view the concentration of the target gas in the current ambient air.
After the signal conversion module 12 obtains the concentration index of the target gas in the current ambient air, the concentration index may be further output to a preset output device through the output module 13, for example, to a vehicle detection device disposed in an automobile, or to a preset terminal device, so that a user can know the concentration of the target gas in the current ambient air.
By implementing the embodiment of the invention, the concentration of the target gas in the current environment can be converted into the voltage signal through the electrochemical sensor, and the voltage signal is subjected to analog-to-digital conversion, so that the concentration index of the target gas is obtained, the concentration index of the target gas in the current environment can be effectively detected, and the concentration index is output, so that a user can check the concentration of the target gas in the current environment.
Further, referring to fig. 4, fig. 4 is a schematic structural diagram of another gas concentration obtaining apparatus provided in the present invention, and the apparatus of the present invention includes a signal obtaining module 11, a signal converting module 12, and an output module 13 of the gas concentration obtaining apparatus. Wherein,
the signal obtaining module 11 is configured to convert a concentration of a target gas in current ambient air into a voltage signal through an electrochemical sensor, where the target gas is a detected gas corresponding to a type of the electrochemical sensor.
It should be noted that the type of the electrochemical sensor includes, but is not limited to, any one of a formaldehyde sensor, a benzene sensor, a hydrogen sulfide gas sensor, a carbon monoxide gas sensor, and a sulfur dioxide sensor.
The signal conversion module 12 is configured to perform analog-to-digital conversion on the voltage signal acquired by the signal acquisition module 11 to obtain a concentration index of the target gas, where the concentration index is used to represent a percentage of the target gas in the current ambient air.
In a specific embodiment, a voltage signal obtained by the electrochemical sensor according to the concentration of the target gas in the current ambient air is an analog signal, and after the analog voltage signal is obtained by the signal obtaining module 11, the analog voltage signal needs to be subjected to analog-to-digital conversion by the signal conversion module 12, so as to obtain the concentration index of the target gas. For example, the signal conversion module 12 may perform analog-to-digital conversion on the analog voltage signal through a preset analog-to-digital AD converter to obtain a digital signal, and process the digital signal through a single chip to obtain the concentration index of the target gas.
The output module 13 is configured to output the concentration index to a preset output device, so that a user can view the concentration of the target gas in the current ambient air.
After the signal conversion module 12 obtains the concentration index of the target gas in the current ambient air, the concentration index may be further output to a preset output device through the output module 13, for example, to a vehicle detection device disposed in an automobile, or to a preset terminal device, so that a user can know the concentration of the target gas in the current ambient air.
Further, in the embodiment of the present invention, the electrochemical sensor is composed of a cathode and an anode, and the cathode is a detection electrode; the signal acquisition module 11 may be specifically configured to:
when the target gas is in contact with the electrochemical sensor, a voltage signal generated by oxidation reaction or reduction reaction on the surface of the detection electrode is acquired, and the voltage signal is in direct proportion to the concentration of the target gas in the current environment.
The electrochemical sensor is composed of a cathode and an anode, the cathode is a detection electrode, and when the concentration of the target gas in the current ambient air is obtained, the signal obtaining module 11 can obtain a voltage value, i.e., a voltage signal, corresponding to the concentration of the target gas through the electrochemical sensor configured in advance. Wherein the voltage signal is proportional to the concentration of the target gas in the current environment, the target gas being a detected gas corresponding to the type of the electrochemical sensor, typically a flammable, toxic or harmful gas. For example, if the electrochemical sensor is a formaldehyde sensor, the target gas is a detected gas corresponding to the formaldehyde sensor, that is, formaldehyde.
Specifically, since combustible, toxic and harmful gases have electrochemical activity, when the target gas contacts the electrochemical sensor, the target gas can be electrochemically oxidized or reduced, that is, an oxidation reaction and/or a reduction reaction occurs on the surface of the detection electrode, and through the oxidation reaction and/or the reduction reaction, the signal acquisition module 11 can distinguish gas components of the ambient air and convert the concentration of the target gas in the current environment into a voltage signal, so as to detect the concentration of the target gas.
Further, in the embodiment of the present invention, the signal conversion module 12 may include:
an analog-to-digital conversion unit 121, configured to convert the voltage signal into a digital signal through a preset analog-to-digital AD converter;
and the concentration obtaining unit 122 is configured to transmit the digital signal to a single chip microcomputer connected to the AD converter, and perform data processing on the digital signal through the single chip microcomputer to obtain a concentration index of the target gas.
In a specific embodiment, the voltage signal corresponding to the concentration of the target gas obtained by the electrochemical sensor is an analog signal, and after the signal obtaining module 11 obtains the analog voltage signal, the signal converting module 12 needs to perform analog-to-digital conversion on the voltage signal, so as to obtain the concentration index of the target gas. Specifically, the analog-to-digital conversion unit 121 may perform analog-to-digital conversion on the analog voltage signal through a preset analog-to-digital AD converter to obtain a digital signal corresponding to the voltage signal. After the analog-to-digital conversion unit 121 obtains the digital signal, the concentration obtaining unit 122 may further perform data processing on the digital signal through a single chip, so as to obtain a concentration index of the target gas. Optionally, the type of the single chip microcomputer may be 89C51, and the embodiment of the present invention is not limited.
Further, in the embodiment of the present invention, the output module 13 may include:
a determining unit 131, configured to determine whether a concentration index of the target gas exceeds a preset gas concentration threshold, where the gas concentration threshold corresponds to the target gas;
a marking unit 132 configured to mark the concentration index of the target gas to highlight the concentration index when the determination result of the determining unit 131 is that the concentration index of the target gas exceeds the gas concentration threshold;
and a correlation output unit 133, configured to output the labeled concentration index and the name of the target gas to a preset output device in a correlated manner.
In particular embodiments, corresponding gas concentration thresholds may also be preset for different target gases, such as noxious gases. After the signal conversion module 12 obtains the concentration index of the harmful gas in the current ambient air, it may further detect whether the concentration index of the harmful gas exceeds a gas concentration threshold corresponding to the harmful gas through the determination unit 131, and when it is detected that the concentration index of the harmful gas exceeds the threshold, the marking unit 132 marks the concentration index of the harmful gas, and outputs the marked concentration index to a preset output device through the association output unit 133, and simultaneously outputs the name of the harmful gas at the output device, so that the user can view the concentration of the harmful gas in the current ambient air, thereby taking corresponding measures. Specifically, the marking mode includes giving an alarm or highlighting a color of the output density index, and the like, and the alarm mode may specifically be a light alarm or a sound alarm, which is not limited in the embodiment of the present invention.
Optionally, the preset output device may be a vehicle detection device disposed in an automobile, or a preset terminal device, such as a mobile phone, a tablet computer, a PDA, and the like.
According to the embodiment of the invention, the concentration of the harmful gas in the current environment can be converted into the voltage value through the electrochemical sensor, and the voltage value is subjected to analog-to-digital conversion, so that the concentration index of the harmful gas is obtained, the concentration index of the harmful gas in the current environment can be effectively detected, and when the concentration index of the harmful gas is detected to exceed the preset threshold value, the concentration index is marked to remind a user that the harmful gas in the environment air in the vehicle exceeds the standard, so that corresponding measures are taken.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a vehicle detection device provided in the present invention, and as shown in fig. 5, the vehicle detection device of the present invention includes: the device comprises an AD converter 2, a singlechip 3 and at least one electrochemical sensor 1; wherein,
the electrochemical sensor 1 is configured to acquire a voltage signal converted according to a concentration of a target gas in a current environment.
It should be noted that the target gas is a gas to be detected corresponding to the type of the electrochemical sensor, and is generally a flammable, toxic, or harmful gas. The types of electrochemical sensors may include formaldehyde sensors, benzene sensors, hydrogen sulfide gas sensors, carbon monoxide gas sensors, sulfur dioxide sensors, and the like (e.g., formaldehyde sensors, benzene sensors, carbon monoxide sensors in fig. 5). Wherein the voltage signal is proportional to the concentration of the target gas in the present environment.
And the AD converter 2 is used for carrying out analog-to-digital conversion on the voltage signal acquired by the electrochemical sensor to obtain a digital signal corresponding to the voltage signal.
The single chip microcomputer 3 is configured to perform data processing on the digital signal acquired by the AD converter 2 to obtain a concentration index of the target gas, and output the concentration index of the target gas to a preset output device, so that a user can view the concentration of the target gas in the current ambient air.
Further, it is also possible to preset corresponding gas concentration thresholds for different target gases, such as harmful gases. After the single chip microcomputer 3 obtains the concentration index of the harmful gas in the current environment air, whether the concentration index of the harmful gas exceeds a gas concentration threshold corresponding to the harmful gas or not can be further detected, and when the concentration index of the harmful gas exceeds the gas concentration threshold, an alarm circuit connected with the single chip microcomputer 3 gives an alarm to remind a user that the harmful gas in the current environment exceeds the standard.
Optionally, the type of the single chip microcomputer 3 may be 89C51, and the embodiment of the present invention is not limited.
Optionally, the preset output device may be a vehicle detection device disposed in an automobile, or a preset terminal device, such as a mobile phone, a tablet computer, a PDA, and the like.
In the embodiment of the invention, compared with the vehicle detection equipment which is used for diagnosing the vehicle fault information or clearing the code, the vehicle detection equipment can convert the concentration of the harmful gas in the current environment into the voltage value through the electrochemical sensor, and perform analog-to-digital conversion on the voltage value so as to obtain the concentration index of the harmful gas, can effectively detect the concentration index of the harmful gas in the current environment, and marks the concentration index to remind a user that the harmful gas in the environment air in the vehicle exceeds the standard when the concentration index of the harmful gas is detected to exceed the preset threshold, so that corresponding measures are taken.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: flash disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
The method, system and device provided by the present invention are described in detail, and the principle and the implementation of the present invention are explained in the present document by applying specific examples, and the description of the above examples is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A method for obtaining a gas concentration, comprising:
converting, by an electrochemical sensor, a concentration of a target gas in current ambient air into a voltage signal, the target gas being a detected gas corresponding to a type of the electrochemical sensor;
performing analog-to-digital conversion on the voltage signal to obtain a concentration index of the target gas, wherein the concentration index is used for representing the percentage of the target gas in the current ambient air;
and outputting the concentration index to preset output equipment so that a user can check the concentration of the target gas in the current ambient air.
2. The method of claim 1, wherein the electrochemical sensor consists of a cathode and an anode, the cathode being a detection electrode; the converting, by the electrochemical sensor, a concentration of a target gas in current ambient air into a voltage signal includes:
when the target gas is in contact with the electrochemical sensor, a voltage signal generated by oxidation reaction or reduction reaction on the surface of the detection electrode is acquired, and the voltage signal is in direct proportion to the concentration of the target gas in the current environment.
3. The method of claim 1, wherein the analog-to-digital converting the voltage signal to obtain the concentration index of the target gas comprises:
converting the voltage signal into a digital signal through a preset analog-to-digital (AD) converter;
and transmitting the digital signal to a singlechip connected with the AD converter, and carrying out data processing on the digital signal through the singlechip to obtain the concentration index of the target gas.
4. The method of claim 1, wherein outputting the concentration index to a preset output device comprises:
judging whether the concentration index of the target gas exceeds a preset gas concentration threshold value, wherein the gas concentration threshold value corresponds to the target gas;
if the gas concentration threshold is exceeded, marking the concentration index of the target gas to highlight the concentration index;
and outputting the marked concentration index and the name of the target gas to preset output equipment in a correlation manner.
5. The method of any one of claims 1-4, wherein the type of electrochemical sensor comprises any one of a formaldehyde sensor, a benzene sensor, a hydrogen sulfide gas sensor, a carbon monoxide gas sensor, and a sulfur dioxide sensor.
6. An apparatus for acquiring a gas concentration, comprising:
the signal acquisition module is used for converting the concentration of target gas in the current ambient air into a voltage signal through an electrochemical sensor, wherein the target gas is detected gas corresponding to the type of the electrochemical sensor;
the signal conversion module is used for performing analog-to-digital conversion on the voltage signal acquired by the signal acquisition module to acquire a concentration index of the target gas, wherein the concentration index is used for representing the percentage of the target gas in the current ambient air;
and the output module is used for outputting the concentration index to preset output equipment so that a user can check the concentration of the target gas in the current ambient air.
7. The device of claim 6, wherein the electrochemical sensor consists of a cathode and an anode, the cathode being a detection electrode; the signal acquisition module is specifically configured to:
when the target gas is in contact with the electrochemical sensor, a voltage signal generated by oxidation reaction or reduction reaction on the surface of the detection electrode is acquired, and the voltage signal is in direct proportion to the concentration of the target gas in the current environment.
8. The apparatus of claim 6, wherein the signal conversion module comprises:
the analog-to-digital conversion unit is used for converting the voltage signal into a digital signal through a preset analog-to-digital (AD) converter;
and the concentration acquisition unit is used for transmitting the digital signal to a single chip microcomputer connected with the AD converter, and carrying out data processing on the digital signal through the single chip microcomputer to obtain the concentration index of the target gas.
9. The apparatus of claim 6, wherein the output module comprises:
the judging unit is used for judging whether the concentration index of the target gas exceeds a preset gas concentration threshold value, and the gas concentration threshold value corresponds to the target gas;
a marking unit configured to mark the concentration index of the target gas to highlight the concentration index when the determination result of the determination unit is that the concentration index of the target gas exceeds the gas concentration threshold;
and the association output unit is used for associating and outputting the marked concentration index and the name of the target gas to preset output equipment.
10. The device of any one of claims 6-9, wherein the type of electrochemical sensor comprises any one of a formaldehyde sensor, a benzene sensor, a hydrogen sulfide gas sensor, a carbon monoxide gas sensor, and a sulfur dioxide sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410794969.0A CN104535628A (en) | 2014-12-18 | 2014-12-18 | Method and device for acquiring gas concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410794969.0A CN104535628A (en) | 2014-12-18 | 2014-12-18 | Method and device for acquiring gas concentration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104535628A true CN104535628A (en) | 2015-04-22 |
Family
ID=52851198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410794969.0A Pending CN104535628A (en) | 2014-12-18 | 2014-12-18 | Method and device for acquiring gas concentration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104535628A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290745A (en) * | 2016-10-31 | 2017-01-04 | 深圳前海弘稼科技有限公司 | The reminding method of content of material and plantation equipment |
| CN106645575A (en) * | 2016-12-15 | 2017-05-10 | 捷开通讯(深圳)有限公司 | System and method for monitoring gas concentration |
| CN110196378A (en) * | 2019-05-24 | 2019-09-03 | 北京海益同展信息科技有限公司 | Inside plant detection method, device, equipment and storage medium |
| CN111854829A (en) * | 2019-04-29 | 2020-10-30 | 热映光电股份有限公司 | Display method and display device for environmental comfort |
| CN117949505A (en) * | 2023-12-20 | 2024-04-30 | 钛玛科（北京）工业科技有限公司 | Intelligent detection method and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6065704A (en) * | 1983-09-17 | 1985-04-15 | Japan Storage Battery Co Ltd | Control of oxygen concentration |
| JPH1137971A (en) * | 1997-05-21 | 1999-02-12 | Denso Corp | Gas concentration detector and manufacture thereof |
| CN2699298Y (en) * | 2004-05-28 | 2005-05-11 | 中国人民解放军军事医学科学院卫生学环境医学研究所 | Gas detection alarm instrument |
| CN101358947A (en) * | 2008-09-22 | 2009-02-04 | 河南省日立信电子有限公司 | Intelligent SF6 gas sensor |
| CN102539508A (en) * | 2011-12-21 | 2012-07-04 | 北京农业信息技术研究中心 | System and method for monitoring malodorous gas of stall |
-
2014
- 2014-12-18 CN CN201410794969.0A patent/CN104535628A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6065704A (en) * | 1983-09-17 | 1985-04-15 | Japan Storage Battery Co Ltd | Control of oxygen concentration |
| JPH1137971A (en) * | 1997-05-21 | 1999-02-12 | Denso Corp | Gas concentration detector and manufacture thereof |
| CN2699298Y (en) * | 2004-05-28 | 2005-05-11 | 中国人民解放军军事医学科学院卫生学环境医学研究所 | Gas detection alarm instrument |
| CN101358947A (en) * | 2008-09-22 | 2009-02-04 | 河南省日立信电子有限公司 | Intelligent SF6 gas sensor |
| CN102539508A (en) * | 2011-12-21 | 2012-07-04 | 北京农业信息技术研究中心 | System and method for monitoring malodorous gas of stall |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290745A (en) * | 2016-10-31 | 2017-01-04 | 深圳前海弘稼科技有限公司 | The reminding method of content of material and plantation equipment |
| CN106645575A (en) * | 2016-12-15 | 2017-05-10 | 捷开通讯(深圳)有限公司 | System and method for monitoring gas concentration |
| CN111854829A (en) * | 2019-04-29 | 2020-10-30 | 热映光电股份有限公司 | Display method and display device for environmental comfort |
| CN110196378A (en) * | 2019-05-24 | 2019-09-03 | 北京海益同展信息科技有限公司 | Inside plant detection method, device, equipment and storage medium |
| CN117949505A (en) * | 2023-12-20 | 2024-04-30 | 钛玛科（北京）工业科技有限公司 | Intelligent detection method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104535628A (en) | Method and device for acquiring gas concentration | |
| CN113783272B (en) | Safety control method based on super capacitor monitoring management system | |
| CN201051748Y (en) | A mobile phone with formaldehyde detection function | |
| WO2007087271A3 (en) | Rapid response sensor for carbon monoxide | |
| CN109781809B (en) | Artificial intelligent calculating method for formaldehyde concentration | |
| ATE320601T1 (en) | DEVICE FOR MEASURING AND DETECTING ACETYLENE DISSOLVED IN A FLUID | |
| CN201054633Y (en) | A mobile phone with harmful gas detection function | |
| WO2010068653A3 (en) | Combined optical and resistance measuring apparatus and method | |
| CN201733362U (en) | Mobile phone capable of detecting and analyzing air composition and warning | |
| KR102229138B1 (en) | The portable wireless sensor system for realtime measuring water quality based on internet of things | |
| CN106770532B (en) | A kind of forecasting of Gas Concentration device and gas concentration real-time detection and forecasting system | |
| CN111398202A (en) | Gas data analysis method, gas data analysis device, electronic device, and storage medium | |
| MX2021008203A (en) | Breath alcohol content device security and sensing. | |
| CN101751749A (en) | Alarming method of flammable gas, device and equipment | |
| Segura et al. | Miniaturization of cyclic voltammetry electronic systems for remote biosensing | |
| CN202795678U (en) | Gas alarm | |
| CN111007115A (en) | Server and corrosive gas monitoring method, device and system thereof | |
| CN201349239Y (en) | Mobile terminal | |
| CN101598699A (en) | A kind of electrochemical detection method of nitro phenolic pollutants and detector | |
| CN210294155U (en) | Portable industrial toxic gas detector | |
| CN104132874A (en) | Sludge concentration detection equipment | |
| CN209858559U (en) | Novel gunpowder combustion flue gas composition testing device | |
| Taguchi et al. | Development of a genotoxicity detection system using a biosensor. | |
| CN207850431U (en) | A kind of miniature bank station system | |
| CN110702839B (en) | Method and device for detecting gas pollutants |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150422 |