CN219475381U - Anti-interference multi-parameter sensor - Google Patents

Anti-interference multi-parameter sensor Download PDF

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Publication number
CN219475381U
CN219475381U CN202320407252.0U CN202320407252U CN219475381U CN 219475381 U CN219475381 U CN 219475381U CN 202320407252 U CN202320407252 U CN 202320407252U CN 219475381 U CN219475381 U CN 219475381U
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gas
module
parameter sensor
control module
detection module
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尚伟栋
陈威
成辰欣
苌延辉
张凯锋
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Shanxi Tiandi Wangpo Coal Mining Co ltd
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Shanxi Tiandi Wangpo Coal Mining Co ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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Abstract

The utility model provides an anti-interference multi-parameter sensor, which comprises a first gas detection module, a first gas identification module, a second gas detection module, a second gas identification module and a control module, wherein the control module is connected with the first gas detection module, the first gas identification module, the second gas detection module and the second gas identification module simultaneously, the first gas identification module comprises a first laser diode, a first air chamber and a first processing unit, the second gas identification module comprises a second laser diode, a second air chamber and a second processing unit, the wavelength of first laser generated by the first laser diode is the absorption peak wavelength of the first gas, and the wavelength of second laser generated by the second laser diode is the absorption peak wavelength of the second gas. Based on the sensor provided by the utility model, various gas concentrations can be accurately detected.

Description

Anti-interference multi-parameter sensor
Technical Field
The utility model relates to the technical field of sensors, in particular to an anti-interference multi-parameter sensor.
Background
The underground environment parameter detection is a serious problem in mine safety production, and the coal mine safety monitoring system can realize real-time online monitoring of underground environment parameters such as methane, carbon monoxide and the like by means of an environment parameter sensor, but the conventional mine sensor has single function and is mostly a single parameter sensor, so that the intelligent degree is low; meanwhile, the existing methane and carbon monoxide detection is easy to be disturbed by underground background gas to generate false alarm.
Currently, the detection of commonly used sensors for detecting gases in the environment mainly comprises a spectrum absorption principle, a catalysis principle, a thermal conductivity principle and an electrochemical principle. For methane detection, quantitative detection by a spectrum absorption principle has the problem of complex process and high price, so that the methane detection of small and medium-sized low-gas mine still mainly adopts a catalytic principle; for carbon monoxide detection, the electrochemical principle is mainly adopted in downhole carbon monoxide detection at present, which is limited by the measurement resolution (1 ppm) and price factors in the industry. The catalytic methane detection mode and the electrochemical carbon monoxide detection mode can be influenced by background gas in the environment to generate false alarm, and meanwhile, as the output signal of the sensitive element is smaller, especially the output signal of the electrochemical sensitive element is a nanoampere level small current signal, the phenomenon of 'makeup' is easily generated by underground electromagnetic interference. Therefore, the prior art lacks a sensor with stronger anti-interference capability, which can accurately detect various gas concentrations.
Disclosure of Invention
The present utility model aims to solve at least one of the technical problems in the related art to some extent.
Therefore, a first object of the present utility model is to provide an anti-interference multi-parameter sensor, which is mainly aimed at accurately detecting various gas concentrations.
In order to achieve the above objective, an embodiment of a first aspect of the present utility model provides an anti-interference multi-parameter sensor, which includes a first gas detection module, a first gas identification module, a second gas detection module, a second gas identification module, and a control module, wherein the control module is simultaneously connected to the first gas detection module, the first gas identification module, the second gas detection module, and the second gas identification module, the first gas identification module includes a first laser diode, a first air chamber, and a first processing unit, and the second gas identification module includes a second laser diode, a second air chamber, and a second processing unit, where a wavelength of a first laser generated by the first laser diode is an absorption peak wavelength of the first gas, and a wavelength of a second laser generated by the second laser diode is an absorption peak wavelength of the second gas.
The anti-interference multi-parameter sensor comprises a first gas detection module, a first gas identification module, a second gas detection module, a second gas identification module and a control module, wherein the control module is connected with the first gas detection module, the first gas identification module, the second gas detection module and the second gas identification module simultaneously, the first gas identification module comprises a first laser diode, a first air chamber and a first processing unit, the second gas identification module comprises a second laser diode, a second air chamber and a second processing unit, the wavelength of first laser generated by the first laser diode is the absorption peak wavelength of the first gas, and the wavelength of second laser generated by the second laser diode is the absorption peak wavelength of the second gas. In this case, the first laser diode is used to generate the first laser, if the first gas exists in the first gas chamber, the laser passing through the first gas chamber changes, at this time, the first processing unit generates a high level, the control module detects the first gas through the first gas detection module when detecting the high level from the first processing unit, the second laser diode is used to generate the second laser, if the second gas exists in the second gas chamber, the laser passing through the second gas chamber changes, at this time, the second processing unit generates a high level, the control module detects the second gas through the second gas detection module when detecting the high level from the second processing unit, so that the concentration detection is not directly performed by the first gas detection module or the second gas detection module, and the gas concentration data error acquisition phenomenon caused by other gases in the environment is avoided, so that the accuracy of detecting the concentration of various gases is improved.
In an anti-interference multi-parameter sensor according to an embodiment of the first aspect of the present utility model, the first gas is methane, the absorption peak wavelength of the first gas is 1650nm, the second gas is carbon monoxide, and the absorption peak wavelength of the second gas is 2330 nm.
In an anti-interference multi-parameter sensor according to an embodiment of the first aspect of the present utility model, the first processing unit includes a first photodiode and a first processing circuit, the second processing unit includes a second photodiode and a second processing circuit, and the first processing circuit and the second processing circuit are respectively connected with the control module.
In the anti-interference multi-parameter sensor according to the embodiment of the first aspect of the present utility model, the control module adopts a singlechip with a model number of C8051F 040.
In an anti-interference multi-parameter sensor according to an embodiment of the first aspect of the present utility model, the anti-interference multi-parameter sensor further includes a display module, where the display module is connected to the control module.
In an anti-interference multi-parameter sensor according to an embodiment of the first aspect of the present utility model, the anti-interference multi-parameter sensor further includes a storage module, where the storage module is connected to the control module.
In an anti-interference multi-parameter sensor according to an embodiment of the first aspect of the present utility model, the anti-interference multi-parameter sensor further includes a remote control module, and the remote control module is connected to the control module.
In an anti-interference multi-parameter sensor according to an embodiment of the first aspect of the present utility model, the anti-interference multi-parameter sensor further includes a power module, and the power module is connected to the first gas detection module, the second gas detection module, and the control module at the same time.
In an anti-interference multi-parameter sensor according to an embodiment of the first aspect of the present utility model, the power module includes an intrinsic safety power supply unit, a power supply filter circuit, and a voltage conversion circuit.
In an anti-interference multi-parameter sensor according to an embodiment of the first aspect of the present utility model, the anti-interference multi-parameter sensor further includes a temperature detection module, where the temperature detection module is connected to the power module and the control module at the same time.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a block diagram of an anti-interference multi-parameter sensor according to an embodiment of the present utility model;
FIG. 2 is a schematic block diagram of a methane identification module provided by an embodiment of the present utility model;
FIG. 3 is a schematic block diagram of a carbon monoxide recognition module according to an embodiment of the present utility model;
FIG. 4 is a schematic block diagram of another anti-interference multi-parameter sensor according to an embodiment of the present utility model;
FIG. 5 is a schematic flow chart of data acquisition of an anti-interference multi-parameter sensor according to an embodiment of the present utility model;
reference numerals illustrate:
10-an anti-interference multi-parameter sensor; 11-a first gas detection module; 12-a first gas identification module; 13-a second gas detection module; 14-a second gas identification module; 15-a control module.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with embodiments of the utility model. Rather, they are merely examples of apparatus and methods consistent with aspects of embodiments of the utility model as detailed in the accompanying claims.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. It should also be understood that the term "and/or" as used in this disclosure refers to and encompasses any or all possible combinations of one or more of the associated listed items.
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
The present utility model will be described in detail with reference to specific examples.
The utility model provides an anti-interference multi-parameter sensor, which mainly aims to accurately detect the concentration of various gases.
Fig. 1 is a block diagram of an anti-interference multi-parameter sensor according to an embodiment of the present utility model. As shown in fig. 1, the anti-interference multi-parameter sensor 10 provided by the embodiment of the utility model includes a first gas detection module 11, a first gas identification module 12, a second gas detection module 13, a second gas identification module 14, and a control module 15, where the control module 15 is connected to the first gas detection module 11, the first gas identification module 12, the second gas detection module 13, and the second gas identification module 14.
In this embodiment, the first gas detection module 11 is configured to detect a first gas.
In the present embodiment, the first gas may be methane (CH) 4 ). The first gas detection module 11 is now a methane detection module. The methane detection module can adopt a MJC/3.0L type methane probe, the range of the methane probe is 0-4%, the working voltage of the methane probe is 3V, the internal part can be equivalent to a fixed resistor (abbreviated as a white piece) and a variable resistor (abbreviated as a black piece), when methane gas exists outside, the resistance value of the variable resistor is approximately linearly increased along with the increase of the methane concentration, and the sensitivity is about 25mv/1% CH 4
Considering that acetylene and other gases in the environment in practical application can cause black part reaction in a methane probe, so that the sensor cannot effectively identify methane in the air. In this embodiment, the first gas identification module 12 is used to identify methane in the air.
Specifically, the first gas identification module 12 includes a first laser diode, a first gas cell, and a first processing unit, considering that different gases have strong absorption capacity for a spectrum of a specific wavelength. The first laser diode is used for generating first laser, and the wavelength of the first laser is the absorption peak wavelength of the first gas. The first gas chamber is for receiving gas from the external environment. The first processing unit includes a first photodiode and a first processing circuit. The first photodiode generates a corresponding electrical signal for the first laser light passing through the first gas cell, and the first processing circuit generates a high level or a low level based on the electrical signal generated by the first photodiode. The first processing circuit generates a high level if the first gas exists in the first gas chamber, and otherwise, the first processing circuit generates a low level. The first processing circuit is connected with the control module. The first processing circuit supplies the generated high or low level to the control module 15.
Fig. 2 is a schematic block diagram of a methane recognition module according to an embodiment of the present utility model. Taking methane as an example of the first gas, consider that methane gas has a strong absorption in the spectrum at 1650nm, while other gases have little absorption. The first gas is methane and the absorption peak wavelength of the first gas is 1650 nm. The first gas recognition module 12 is a methane recognition module, the first laser diode is a 1650nm laser diode, when the gas chamber has methane gas, the spectrum with the wavelength of 1650nm entering the gas chamber is attenuated, if the gas chamber has other gas, the spectrum passing through the gas chamber can be effectively recognized through the photodiode, then a high level or a low level is generated through the processing circuit, if the high level is output to consider that methane exists in the air, and if the low level is output to consider that methane does not exist in the air, the high level is output to consider that the methane does not exist in the air.
In the present embodiment, the second gas detection module 13 is configured to detect the second gas.
In this embodiment, the second gas may be, for example, carbon monoxide (CO). The second gas detection module 13 is a carbon monoxide detection module. The carbon monoxide detection module may employ a 4cm model carbon monoxide probe of CITY, UK, ranging from 0 to 2000ppm, with a sensitivity of about 70nA/1ppmCO.
In the practical application, the sensor can not effectively identify carbon monoxide in the air due to the fact that the sensing element is caused to react by acetylene, nitric oxide and other gases in the environment. In the present embodiment, the second gas recognition module 14 is used to recognize carbon monoxide in the air.
Specifically, the second gas identification module 14 includes a second laser diode, a second gas cell, and a second processing unit. Wherein the second laser diode is used for generating second laser light. The wavelength of the second laser light is the absorption peak wavelength of the second gas. The second gas chamber is for receiving gas from the external environment. The second processing unit includes a second photodiode and a second processing circuit. The second photodiode generates a corresponding electrical signal for the second laser light passing through the second gas cell, and the second processing circuit generates a high level or a low level based on the electrical signal generated by the second photodiode. And if the second gas exists in the second gas chamber, the second processing circuit generates a high level, otherwise, the second processing circuit generates a low level. The second processing circuit is connected to the control module 15. The second processing circuit supplies the generated high or low level to the control module 15.
Fig. 3 is a schematic block diagram of a carbon monoxide recognition module according to an embodiment of the present utility model. Taking carbon monoxide as an example of the second gas, it is considered that carbon monoxide gas has strong absorption to the spectrum of 2330nm wavelength, while other gases have little absorption. Therefore, when the second gas is carbon monoxide, the absorption peak wavelength of the second gas is 2330 nm. The second gas identification module 14 is a carbon monoxide identification module. The second laser diode is a 2330nm laser diode, when the gas chamber contains carbon monoxide gas, the spectrum with the wavelength of 2330nm entering the gas chamber is attenuated, if the spectrum is other background gas, the spectrum passing through the gas chamber can be effectively identified through the photodiode, then a high level or a low level is generated through the processing circuit, if the high level is output to consider that carbon monoxide exists in the air, and if the low level is output to consider that carbon monoxide does not exist in the air.
In this embodiment, the control module 15 is configured to obtain the voltage signal output by the first gas detection module 11 to obtain the first gas concentration when receiving the high level signal of the first gas identification module 12, and is further configured to obtain the voltage signal output by the second gas detection module 13 to obtain the second gas concentration when receiving the high level signal of the second gas identification module 14.
In some embodiments, the control module employs a single-chip microcomputer model C8051F 040. The C8051F040 singlechip includes at least 2 IO port pins and a plurality of AD port pins, wherein the first gas identification module 12 and the second gas identification module 14 are respectively connected with different IO port pins. The first gas detection module 11 and the second gas detection module 13 are respectively connected with different AD port pins.
Fig. 4 is a schematic block diagram of another anti-interference multi-parameter sensor according to an embodiment of the present utility model. Taking methane as the first gas and carbon monoxide as the second gas as an example, as shown in fig. 4, the anti-interference multi-parameter sensor comprises a methane detection module, a methane identification module, a carbon monoxide detection module, a carbon monoxide identification module and a C8051F040 single-chip microcomputer. The C8051F040 singlechip is connected with the methane detection module, the methane identification module, the carbon monoxide detection module and the carbon monoxide identification module simultaneously. The methane detection module and the carbon monoxide detection module respectively output a voltage signal to an AD port pin of the C8051F040 singlechip, and the C8051F040 singlechip can acquire data of methane and carbon monoxide in the environment in real time through the AD port pin. And the C8051F040 singlechip calculates and obtains the concentration of methane and carbon monoxide in the environment based on the acquired data of the methane and the carbon monoxide in the environment. The methane identification module and the carbon monoxide identification module respectively output one-path level signals to an IO port pin of the C8051F040 singlechip, and the C8051F040 singlechip can detect level change in real time through the IO port pin. And when the C8051F040 singlechip receives a high-level signal of the methane identification module, and the C8051F040 singlechip acquires the voltage change of the methane detection module, the methane data is updated, and otherwise, the methane data is not updated. When the C8051F040 singlechip receives a high-level signal of the carbon monoxide identification module, and the C8051F040 singlechip acquires the voltage change of the carbon monoxide detection module, the carbon monoxide data is updated, otherwise, the carbon monoxide data is not updated.
In this embodiment, the anti-interference multi-parameter sensor 10 further includes a display module, and the display module is connected to the control module 15. The display module and the control module 15 perform data transmission through serial communication. The display module may display the concentrations of the first gas and the second gas.
As shown in fig. 4, the display module is connected with the C8051F040 single-chip microcomputer, and the C8051F040 single-chip microcomputer drives the display module to display data through serial communication, wherein the displayed data can include the concentration of methane and carbon monoxide in the environment calculated by the C8051F040 single-chip microcomputer.
In this embodiment, the anti-interference multi-parameter sensor 10 further includes a memory module, and the memory module is connected to the control module 15. The memory module interacts with the control module 15 via I2C communication. The storage module may store the concentrations of the first gas and the second gas.
As shown in fig. 4, the storage module is connected with a C8051F040 single-chip microcomputer, and the C8051F040 single-chip microcomputer drives the storage module to store data through I2C communication, where the stored data may include the concentration of methane and carbon monoxide in the environment calculated by the C8051F040 single-chip microcomputer.
In this embodiment, the anti-interference multi-parameter sensor 10 further includes a remote control module, and the remote control module is connected to the control module 15. The remote control module and the control module 15 perform data transmission through SPI communication. The remote control module is used for performing remote control calibration.
As shown in fig. 4, the remote control module is connected with a C8051F040 single-chip microcomputer, and the C8051F040 single-chip microcomputer drives the remote control module to perform remote control calibration through SPI communication.
In this embodiment, the anti-interference multi-parameter sensor further includes a power module 10, which is connected to the first gas detection module 11, the second gas detection module 13, and the control module 15 at the same time. The power module is also connected with the display module, the storage module and the remote control module at the same time.
In this embodiment, the anti-interference multi-parameter sensor further includes a temperature detection module. The temperature detection module is used for detecting the ambient temperature. The temperature detection module is connected with the control module. The temperature detection module sends the detected temperature data to the control module.
In this embodiment, the power module includes an intrinsic safety power supply unit, a power supply filter circuit, and a voltage conversion circuit. As shown in fig. 4, the intrinsic safety power supply unit may be an intrinsic safety power supply 21VDC. The power filter circuit may be a power filter. The intrinsic safety power supply 21VDC is converted into 3 paths of power supplies after passing through a power supply filter and a voltage conversion circuit, and the 3 paths of power supplies are 3.3VDC, 3VDC and 12VDC respectively. One path of 3.3VDC is a C8051F040 singlechip, and a peripheral display module, a storage module and a remote control module are used for supplying power; one path of 3VDC is used for supplying power to the methane detection module and the carbon monoxide detection module; one path of 12VDC supplies power to the temperature detection module.
Fig. 5 is a schematic flow chart of data acquisition of an anti-interference multi-parameter sensor according to an embodiment of the present utility model. Taking the example that the first gas is methane and the second gas is carbon monoxide, in combination with the anti-interference multi-parameter sensor shown in fig. 4, as shown in fig. 5, the data acquisition process of the anti-interference multi-parameter sensor is as follows:
1) After the anti-interference multi-parameter sensor is powered on, firstly, the power-on initialization is carried out, the singlechip starts to configure an internal clock and related peripherals, after the configuration is completed, a detection mode (namely an acquisition mode) is started, a timer 0 starts to work, and an acquisition mark is set every 1 second;
2) Judging whether an acquisition mark (namely a sampling mark) is set or not, if the acquisition mark is not set, repeating the judgment, and if the acquisition mark is set, starting to detect the level states of a connecting pin (such as an IO port P3.0) of a methane identification module and the singlechip and a connecting pin (such as an IO port P3.1) of a carbon monoxide identification module and the singlechip by the singlechip, so as to determine whether interference gas exists outside, if the IO port P3.0 is in a low level, not acquiring methane channel data, and if the IO port P3.1 is in a low level, not acquiring carbon monoxide channel data, and calculating methane concentration, carbon monoxide concentration and temperature based on the methane channel data, the carbon monoxide channel data and the temperature data acquired in the previous time;
4) If the states of the level of the IO port P3.0 and the level of the IO port P3.1 are high, corresponding channels (for example, a methane channel is an AD channel 1, and a carbon monoxide channel is an AD channel 2) are started to acquire methane channel voltage and carbon monoxide channel voltage, and after data acquisition is completed, data and temperature of methane and carbon monoxide in an actual environment are obtained through numerical calculation and displayed;
4) Judging whether the remote control marker bit is set after the display is finished, if so, indicating that the remote control marker bit is in a remote control calibration state, starting to calibrate related parameters, returning to a main interface after the calibration is finished, storing the related parameters, and starting the next round of data acquisition; and if the remote control mark is not set, immediately entering the next round of data acquisition.
The anti-interference multi-parameter sensor provided by the embodiment of the utility model comprises a first gas detection module, a first gas identification module, a second gas detection module, a second gas identification module and a control module, wherein the control module is connected with the first gas detection module, the first gas identification module, the second gas detection module and the second gas identification module at the same time, the first gas identification module comprises a first laser diode, a first air chamber and a first processing unit, the second gas identification module comprises a second laser diode, a second air chamber and a second processing unit, the wavelength of first laser generated by the first laser diode is the absorption peak wavelength of the first gas, and the wavelength of second laser generated by the second laser diode is the absorption peak wavelength of the second gas. In this case, the first laser diode is used to generate the first laser, if the first gas exists in the first gas chamber, the laser passing through the first gas chamber changes, at this time, the first processing unit generates a high level, the control module detects the first gas through the first gas detection module when detecting the high level from the first processing unit, the second laser diode is used to generate the second laser, if the second gas exists in the second gas chamber, the laser passing through the second gas chamber changes, at this time, the second processing unit generates a high level, the control module detects the second gas through the second gas detection module when detecting the high level from the second processing unit, so that the concentration detection is not directly performed by the first gas detection module or the second gas detection module, and the gas concentration data error acquisition phenomenon caused by other gases in the environment is avoided, so that the accuracy of detecting the concentration of various gases is improved. The anti-interference multi-parameter sensor adopts an optical identification method, so that the influence of background gas in the environment on measurement is avoided, the problem of false alarm of the sensor caused by the interference of the background gas in the environment is avoided, the anti-interference performance of the sensor is improved, the accurate and reliable measurement of sensor data is ensured, and the price is moderate.
It should be understood that the components, connections and relationships of the components, and functions of the components, are shown, are exemplary only, and are not meant to limit implementations of the utility model described and/or claimed in this patent. Various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present utility model may be executed in parallel, sequentially, or in a different order, and the present utility model is not limited herein as long as the desired results of the technical solution disclosed in the present utility model can be achieved.
The above embodiments do not limit the scope of the present utility model. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included in the scope of the present utility model.

Claims (10)

1. The anti-interference multi-parameter sensor is characterized by comprising a first gas detection module, a first gas identification module, a second gas detection module, a second gas identification module and a control module, wherein the control module is simultaneously connected with the first gas detection module, the first gas identification module, the second gas detection module and the second gas identification module, the first gas identification module comprises a first laser diode, a first air chamber and a first processing unit, the second gas identification module comprises a second laser diode, a second air chamber and a second processing unit, the wavelength of first laser generated by the first laser diode is the absorption peak wavelength of the first gas, and the wavelength of second laser generated by the second laser diode is the absorption peak wavelength of the second gas.
2. The tamper resistant multi-parameter sensor of claim 1, wherein: the first gas is methane, the absorption peak wavelength of the first gas is 1650 nanometers, the second gas is carbon monoxide, and the absorption peak wavelength of the second gas is 2330 nanometers.
3. The tamper resistant multi-parameter sensor of claim 1 or 2, wherein: the first processing unit comprises a first photodiode and a first processing circuit, the second processing unit comprises a second photodiode and a second processing circuit, and the first processing circuit and the second processing circuit are respectively connected with the control module.
4. A tamper resistant multi-parameter sensor according to claim 3, wherein: the control module adopts a singlechip with the model of C8051F 040.
5. The tamper resistant multi-parameter sensor of claim 1, wherein: the anti-interference multi-parameter sensor further comprises a display module, and the display module is connected with the control module.
6. The tamper resistant multi-parameter sensor of claim 1, wherein: the anti-interference multi-parameter sensor further comprises a storage module, and the storage module is connected with the control module.
7. The tamper resistant multi-parameter sensor of claim 1, wherein: the anti-interference multi-parameter sensor further comprises a remote control module, and the remote control module is connected with the control module.
8. The tamper resistant multi-parameter sensor of claim 1, wherein: the anti-interference multi-parameter sensor further comprises a power supply module, and the power supply module is connected with the first gas detection module, the second gas detection module and the control module simultaneously.
9. The tamper resistant multi-parameter sensor of claim 8, wherein: the power module comprises an intrinsic safety power supply unit, a power supply filter circuit and a voltage conversion circuit.
10. The tamper resistant multi-parameter sensor of claim 8, wherein: the anti-interference multi-parameter sensor further comprises a temperature detection module, and the temperature detection module is connected with the power supply module and the control module at the same time.
CN202320407252.0U 2023-03-03 2023-03-03 Anti-interference multi-parameter sensor Active CN219475381U (en)

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