CN212693760U - Combustible gas detector and equipment - Google Patents
Combustible gas detector and equipment Download PDFInfo
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- CN212693760U CN212693760U CN202021042831.2U CN202021042831U CN212693760U CN 212693760 U CN212693760 U CN 212693760U CN 202021042831 U CN202021042831 U CN 202021042831U CN 212693760 U CN212693760 U CN 212693760U
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Abstract
The application is applicable to the technical field of gas detection, and provides a combustible gas detector and equipment, wherein the combustible gas detector comprises a first acquisition module, a second acquisition module, a display module, a control module and a main power supply module; the first acquisition module acquires the concentration of the combustible gas to generate a first concentration signal and transmits the first concentration signal to the control module; the second acquisition module acquires the concentration of the combustible gas to generate a second concentration signal and transmits the second concentration signal to the control module; the control module controls the display module to display the first concentration signal; the control module also controls the display module to display fault information under the condition that the difference value of the first concentration signal and the second concentration signal is greater than a preset value, so that the effect of detecting the sensitivity of the combustible gas detector is realized.
Description
Technical Field
The utility model belongs to the technical field of gaseous detection, especially, relate to a combustible gas detector and equipment.
Background
The combustible gas detector is fixedly installed in a place where inflammable and explosive gases exist, is used as an instrument for monitoring gas concentration, and is widely applied to industrial places such as petroleum industry and chemical industry.
The combustible gas detector works for a long time, the phenomenon of sensitivity reduction or failure can occur, the traditional combustible gas detector cannot detect the sensitivity of the detector, and when the sensitivity of the sensor is reduced or the sensor fails, the combustible gas cannot be accurately detected.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a combustible gas detector and equipment, and can solve the problem that the combustible gas detector cannot detect the sensitivity of the combustible gas detector.
In a first aspect, an embodiment of the present application provides a combustible gas detector, which includes a first acquisition module, a second acquisition module, a display module, a control module, and a main power module;
the main power supply module is respectively connected with the first acquisition module, the second acquisition module, the display module and the control module; the first acquisition module, the second acquisition module and the display module are all connected with the control module;
the main power supply module is used for providing power for the first acquisition module, the second acquisition module, the display module and the control module; the first acquisition module is used for acquiring the concentration of the combustible gas to generate a first concentration signal and transmitting the first concentration signal to the control module; the second acquisition module is used for acquiring the concentration of the combustible gas to generate a second concentration signal and transmitting the second concentration signal to the control module; the control module is used for controlling the display module to display the first concentration signal; the control module is further used for controlling the display module to display fault information under the condition that the difference value between the first concentration signal and the second concentration signal is larger than a preset value.
In a possible implementation manner of the first aspect, the first acquisition module includes a first gas sensor, a first signal processing unit, and a first power supply unit;
the first power supply unit is respectively connected with the first gas sensor and the first signal processing unit, the first gas sensor is connected with the input end of the first signal processing unit, and the output end of the first signal processing unit is connected with the control module;
the first power supply unit is used for supplying power to the first gas sensor and the first signal processing unit; the first gas sensor is used for collecting the concentration of combustible gas to generate a first gas concentration signal and transmitting the first gas concentration signal to the first signal processing unit; the first signal processing unit is used for amplifying the first gas concentration signal to obtain the first concentration signal and transmitting the first concentration signal to the control module.
In a possible implementation manner of the first aspect, the second acquisition module includes a second gas sensor, a second signal processing unit, and a second power supply unit;
the second power supply unit is respectively connected with the second gas sensor and the second signal processing unit, the second gas sensor is connected with the input end of the second signal processing unit, and the output end of the second signal processing unit is connected with the control module;
the second power supply unit is used for supplying power to the second gas sensor and the second signal processing unit; the second gas sensor is used for collecting the concentration of combustible gas to generate a second gas concentration signal and transmitting the second gas concentration signal to the second signal processing unit; the second signal processing unit is used for amplifying the second gas concentration signal to obtain a second concentration signal and transmitting the second concentration signal to the control module.
In one possible implementation manner of the first aspect, the control module includes a digital-to-analog conversion unit and a processor unit;
the input end of the digital-to-analog conversion unit is respectively connected with the first acquisition module and the second acquisition module, and the output end of the digital-to-analog conversion unit and the display module are both connected with the processor unit;
the digital-to-analog conversion unit is used for performing analog-to-digital conversion on the first concentration signal and the second concentration signal and transmitting the converted first concentration signal and the converted second concentration signal to the processor unit; the processor unit is used for controlling the display module to display the first concentration signal; the processor unit is further used for controlling the display module to display fault information under the condition that the difference value of the first concentration signal and the second concentration signal is larger than a preset value.
In a possible implementation manner of the first aspect, the control module further includes a drop-off detection unit;
the input end of the falling detection unit is connected with the first acquisition module, and the output end of the falling detection unit is connected with the processor unit;
the falling detection unit is used for collecting the voltage of the output end of the first collection module, generating a falling signal under the condition that the voltage of the output end meets a preset condition, and transmitting the falling signal to the processor unit; the processor unit is also used for controlling the display module to display the falling fault information according to the falling signal.
In a possible implementation manner of the first aspect, the control module further includes a first power detection unit;
the input end of the first power supply detection unit is connected with the output end of the main power supply module, and the output end of the first power supply detection unit is connected with the processor unit;
the first power supply detection unit is used for acquiring a first voltage signal output by the main power supply module and transmitting the first voltage signal to the processor unit; the processor unit is further used for controlling the display module to display first power failure information when the first voltage signal exceeds a first preset voltage range.
In a possible implementation manner of the first aspect, the control module further includes a second power detection unit;
the input end of the second power supply detection unit is connected with a power supply, and the output end of the second power supply detection unit is connected with the processor unit;
the second power supply detection unit is used for acquiring a second voltage signal output by the power supply and transmitting the second voltage signal to the processor unit; the processor unit is further configured to control the display module to display second power failure information when the second voltage signal exceeds a second preset voltage range.
In one possible implementation manner of the first aspect, the combustible gas detector further includes an alarm module;
the alarm module is connected with the control module;
the control module is also used for controlling the alarm module to alarm under the condition that the first concentration signal is greater than the early warning value.
In one possible implementation manner of the first aspect, the combustible gas detector further includes a communication module;
the communication module is connected with the control module;
the control module is also used for communicating with an upper computer through the communication module.
In a second aspect, embodiments of the present application provide a combustible gas detection apparatus, including the combustible gas detector of any one of the first aspects.
Compared with the prior art, the embodiment of the application has the advantages that:
the first acquisition module acquires the concentration of the combustible gas to generate a first concentration signal and transmits the first concentration signal to the control module; the second acquisition module acquires the concentration of the combustible gas to generate a second concentration signal and transmits the second concentration signal to the control module; the control module controls the display module to display the first concentration signal; and meanwhile, the control module controls the display module to display fault information under the condition that the difference value of the first concentration signal and the second concentration signal is greater than a preset value. When the difference value of the first concentration signal and the second concentration signal exceeds a preset value, the phenomenon that the sensitivity of the first acquisition module or the second acquisition module is reduced or fails is indicated, and at the moment, the control module controls the display module to display fault information, so that the effect of detecting the sensitivity of the combustible gas detector is achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic block diagram of a combustible gas detector provided in an embodiment of the present application;
fig. 2 is a schematic circuit diagram of a main power supply module according to an embodiment of the present application;
FIG. 3 is a circuit diagram of a first power supply unit according to an embodiment of the present disclosure;
FIG. 4 is a schematic circuit diagram of a first gas sensor provided in an embodiment of the present application;
fig. 5 is a circuit diagram of a first signal processing unit according to an embodiment of the present application;
FIG. 6 is a circuit diagram of a second power supply unit according to an embodiment of the present application;
FIG. 7 is a schematic circuit diagram of a second gas sensor provided in accordance with an embodiment of the present application;
fig. 8 is a circuit diagram of a second signal processing unit according to an embodiment of the present application;
fig. 9 is a circuit schematic diagram of a digital-to-analog conversion unit according to an embodiment of the present application;
FIG. 10 is a circuit diagram of a processor unit according to an embodiment of the present application;
FIG. 11 is a circuit diagram of a dropout detection unit according to an embodiment of the present application;
fig. 12 is a circuit diagram of a first power detection unit according to an embodiment of the present application;
fig. 13 is a circuit diagram of a second power detection unit according to an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to" determining "or" in response to detecting ". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.
The combustible gas detector works for a long time, the phenomenon of sensitivity reduction or failure can occur, the traditional combustible gas detector cannot detect the sensitivity of the traditional combustible gas detector, and when the combustible gas detector with the sensitivity reduction or the failure is used, the combustible gas cannot be accurately detected.
Based on the problems, the embodiment of the application discloses a combustible gas detector which comprises a first acquisition module and a second acquisition module, wherein the first acquisition module acquires the concentration of combustible gas to generate a first concentration signal and transmits the first concentration signal to a control module; the second acquisition module acquires the concentration of the combustible gas to generate a second concentration signal and transmits the second concentration signal to the control module; when the difference value of the first concentration signal and the second concentration signal exceeds a preset value, the phenomenon that the sensitivity of the first acquisition module or the second acquisition module is reduced or fails is indicated, and at the moment, the control module controls the display module to display fault information, so that the effect of detecting the sensitivity of the combustible gas detector is achieved.
In order to explain the technical solution described in the present application, the following description will be given by way of specific examples.
Fig. 1 illustrates a schematic block diagram of a combustible gas detector provided in an embodiment of the present application, where the combustible gas detector may include a first acquisition module 200, a second acquisition module 300, a display module 400, a control module 100, and a main power module 500, and the main power module 500 is connected to the first acquisition module 200, the second acquisition module 300, the display module 400, and the control module 100, respectively; the first acquisition module 200, the second acquisition module 300 and the display module 400 are all connected with the control module 100.
Specifically, the main power module 500 is used to provide power for the first acquisition module 200, the second acquisition module 300, the display module 400 and the control module 100; the first collecting module 200 is configured to collect a concentration of the combustible gas to generate a first concentration signal, and transmit the first concentration signal to the control module 100; the second collecting module 300 is configured to collect a concentration of the combustible gas to generate a second concentration signal, and transmit the second concentration signal to the control module 100; the control module 100 is configured to control the display module 400 to display the first concentration signal; the control module 100 is further configured to control the display module 400 to display the fault information when a difference between the first concentration signal and the second concentration signal is greater than a preset value. When the difference between the first concentration signal and the second concentration signal exceeds the preset value, it indicates that the first acquisition module 200 or the second acquisition module 300 has a phenomenon of sensitivity reduction or failure, and at this time, the control module 100 controls the display module 400 to display fault information, so as to achieve the effect of sensitivity detection of the combustible gas detector.
It should be noted that, when the combustible gas detector normally works, the first concentration signal acquired by the first acquisition module 200 is the same as or substantially the same as the second concentration signal acquired by the second acquisition module 300, at this time, the control module 100 controls the display module 400 to display the first concentration signal, and the user uses the first concentration signal as the target concentration signal. When the sensitivity of the first collection module 200 in the combustible gas detector is reduced, the first concentration signal collected by the first collection module 200 is different from the second concentration signal collected by the second collection module 300 at the same moment, the difference value between the first concentration signal and the second concentration signal is greater than the preset value, at the moment, the control module 100 controls the display module 400 to display fault information, and informs a user of the problem that the sensitivity of the combustible gas detector is reduced, so that the user can maintain or replace the combustible gas detector in time, and the normal monitoring of the combustible gas is ensured. The designer or the user can set the preset value according to the actual situation so as to meet the precision requirements of the combustible gas detector under different scenes.
For example, as shown in fig. 2, the main power module 500 may be constructed by using an LMR16010 buck-regulator chip, an input end of the main power module 500 is connected to a 24V power supply, and outputs a stable 3.3V voltage through buck-regulation to provide power for the first acquisition module 200, the second acquisition module 300, the display module 400, and the control module 100.
In one embodiment of the present application, the first acquisition module 200 may include a first gas sensor, a first signal processing unit, and a first power supply unit; the first power supply unit is respectively connected with the first gas sensor and the first signal processing unit, the first gas sensor is connected with the input end of the first signal processing unit, and the output end of the first signal processing unit is connected with the control module 100.
Specifically, the first power supply unit is used for supplying power to the first gas sensor and the first signal processing unit; the first gas sensor is used for collecting the concentration of combustible gas to generate a first gas concentration signal and transmitting the first gas concentration signal to the first signal processing unit; the first signal processing unit is configured to amplify the first gas concentration signal to obtain a first concentration signal, and transmit the first concentration signal to the control module 100.
For example, as shown in fig. 3 to 5, the first power supply unit may be constructed by using a TPS62050DGS chip, an input end of the first power supply unit is connected to an output end (3.3V) of the main power supply module 500, and outputs a stable 2.6V voltage signal to supply power to the first gas sensor. The first gas sensor can be a CAT16 sensor, a power supply end of the CAT16 sensor is connected with an output end (2.6V) of the first power supply unit, and output ends (S1-S1 +) are connected with an input end of the first signal processing unit. The first signal processing unit can be constructed by selecting an operational amplifier chip OPA4251UA to form an instrument differential amplification circuit, the input end of the instrument differential amplification circuit is connected with the output end of the CAT16 sensor, and a signal output by the CAT16 sensor is amplified and then a first concentration signal (ADS +) is output to the control module 100.
In one embodiment of the present application, the second acquisition module 300 may include a second gas sensor, a second signal processing unit, and a second power supply unit; the second power supply unit is respectively connected with the second gas sensor and the second signal processing unit, the second gas sensor is connected with the input end of the second signal processing unit, and the output end of the second signal processing unit is connected with the control module 100.
Specifically, the second power supply unit is used for supplying power to the second gas sensor and the second signal processing unit; the second gas sensor is used for collecting the concentration of the combustible gas to generate a second gas concentration signal and transmitting the second gas concentration signal to the second signal processing unit; the second signal processing unit is configured to amplify the second gas concentration signal to obtain a second concentration signal, and transmit the second concentration signal to the control module 100.
For example, as shown in fig. 6 to 8, the second power supply unit may be built by using a TPS62050DGS chip, an input end of the second power supply unit is connected to an output end (3.3V) of the main power supply module 500, and outputs a stable 3.0V voltage signal to provide power for the second gas sensor. The second gas sensor can be a VQ548MP sensor, a power supply end of the VQ548MP sensor is connected with an output end (3.0V) of the second power supply unit, and output ends (S2-S2 +) are connected with an input end of the second signal processing unit. The second signal processing unit can be constructed by an operational amplifier chip TLC27L4BID to form an instrument differential amplification circuit, the input end of the instrument differential amplification circuit is connected with the output end of the VQ548MP sensor, and a signal output by the VQ548MP sensor is amplified and then a second concentration signal (ADS-) is output to the control module 100.
In one embodiment of the present application, the control module 100 may include a digital-to-analog conversion unit and a processor unit; the input end of the digital-to-analog conversion unit is connected with the first acquisition module 200 and the second acquisition module 300 respectively, and the output end of the digital-to-analog conversion unit and the display module 400 are both connected with the processor unit.
Specifically, the digital-to-analog conversion unit is used for performing analog-to-digital conversion on the first concentration signal and the second concentration signal and transmitting the converted first concentration signal and second concentration signal to the processor unit; the processor unit is used for controlling the display module 400 to display the first concentration signal; the processor unit is further configured to control the display module 400 to display the fault information if a difference between the first concentration signal and the second concentration signal is greater than a preset value.
For example, as shown in fig. 9 and fig. 10, the digital-to-analog conversion unit may be a digital-to-analog conversion circuit built by using an ADS1112IDGST chip, and the processor unit may be built by using a PIC18F46K80 chip and a MAX6324AUT29 chip. The ADS1112IDGST chip can make a difference between the first concentration signal and the second concentration signal to obtain a difference signal (AD-SDA, AD-SCL), then transmit the difference signal to the processor unit, the processor unit compares the difference signal with a preset value, when the difference signal is greater than the preset signal (the sensitivity of the first gas sensor is reduced), the processor unit controls the display module 400 to display fault information, a user observes the fault information, and the combustible gas detector can be maintained or replaced in time to ensure normal monitoring of the combustible gas.
As shown in fig. 10, the processor unit also performs analog-to-digital conversion on the first concentration signal (ADS +) and the second concentration signal (ADS-), the processor compares the converted first concentration signal with the first concentration signal obtained by the digital-to-analog conversion unit, and the processor compares the converted second concentration signal with the first concentration signal obtained by the digital-to-analog conversion unit to diagnose whether the digital-to-analog conversion unit works abnormally.
In one embodiment of the present application, the control module 100 may further include a drop-off detection unit; the input end of the falling detection unit is connected with the first acquisition module 200, and the output end of the falling detection unit is connected with the processor unit.
Specifically, the falling detection unit is configured to collect the output voltage of the first collection module 200, generate a falling signal when the output voltage meets a preset condition, and transmit the falling signal to the processor unit, and the processor unit controls the display module 400 to display the falling fault information according to the falling signal.
For example, as shown in fig. 11, the falling detection unit may be a voltage divider circuit formed by a resistor R42 and a resistor R43, the input terminal of the voltage divider circuit is connected to the power supply terminal (2.6V) of the first gas sensor, the output terminal (SF) of the voltage divider circuit is connected to the processor unit, and when the first gas sensor is normally installed, the output terminal (SF) of the falling detection unit outputs a preset voltage value to the processor unit; when the first gas sensor falls off, the output end (SF) of the falling-off detection unit has no voltage signal, and the processor unit judges whether the first gas sensor has a falling-off fault or not by detecting whether the output end (SF) of the falling-off detection unit has the voltage signal or not.
The voltage divider circuit formed by the drop detection means is not limited to the two resistors shown in fig. 11, and may be an equivalent circuit formed by a plurality of resistors or other devices as needed. The falling detection unit can comprise two voltage division circuits which are respectively used for detecting whether the first gas sensor and the second gas sensor fall off or not, and the first gas sensor and the second gas sensor can be integrally packaged, so that one voltage division circuit can be arranged and used for detecting whether the first gas sensor or the second gas sensor falls off or not.
In an embodiment of the present application, the control module 100 may further include a first power detection unit, an input terminal of the first power detection unit is connected to an output terminal of the main power module 500, and an output terminal of the first power detection unit is connected to the processor unit.
Specifically, the first power detection unit is configured to collect a first voltage signal output by the main power module 500, and transmit the first voltage signal to the processor unit, and the processor unit is further configured to control the display module 400 to display the first power failure information when the first voltage signal exceeds a first preset voltage range.
For example, as shown in fig. 12, the first power detection unit may be a voltage divider formed by a resistor R18 and a resistor R21, an input terminal of the voltage divider circuit is connected to the input terminal (3.3V) of the main power module 500, and an output terminal (V3.3-AD) is connected to the processor unit. When the main power module 500 works normally, a first voltage signal output by an output end (V3.3-AD) of the voltage division circuit is within a first preset voltage range; when the main power module 500 fails, the first voltage signal output by the output terminal (V3.3-AD) of the voltage divider circuit exceeds the first preset voltage range, and the processor unit can determine whether the main power module 500 fails by comparing the first voltage signal with the first preset voltage range.
In an embodiment of the present application, the control module 100 further includes a second power detection unit, an input end of the second power detection unit is connected to the power supply, and an output end of the second power detection unit is connected to the processor unit.
Specifically, the second power supply detection unit is used for acquiring a second voltage signal output by the power supply and transmitting the second voltage signal to the processor unit; the processor unit is further configured to control the display module 400 to display the second voltage signal; the processor unit is further configured to control the display module 400 to display the second power failure information when the second voltage signal exceeds a second preset voltage range.
For example, as shown in fig. 13, the first power detection unit may be a voltage divider formed by a resistor R19 and a resistor R20, an input terminal of the voltage divider circuit is connected to the main power supply (24V), and an output terminal (V24-AD) is connected to the processor unit. When the main power supply (24V) supplies power normally, a second voltage signal output by the output end (V24-AD) of the voltage division circuit is within a second preset voltage range; when the power supply of the main power supply (24V) is abnormal, the second voltage signal output by the output end (V24-AD) of the voltage division circuit exceeds a second preset voltage range, and the processor unit can judge whether the main power supply normally supplies power or not by comparing the second voltage signal with the second preset voltage range.
In one embodiment of the present application, the combustible gas detector may further include an alarm module, and the alarm module is connected to the control module 100.
Specifically, the control module 100 is further configured to control the alarm module to alarm and play a role in prompting when the first concentration signal is greater than the early warning value.
Illustratively, the alarm module may include a flash and a buzzer, both of which are connected to the control module 100. When alarming, the control module 100 controls the flash lamp to flash and controls the buzzer to sound, so that sound and light alarming is realized, a user can receive alarming information, and the alarming effectiveness is improved.
In one embodiment of the present application, the combustible gas detector may further include a communication module, and the communication module is connected to the control module 100.
Specifically, the control module 100 is further configured to communicate with an upper computer through a communication module, so as to implement remote transmission of data.
Illustratively, the communication module may include a wired transmission unit and/or a wireless transmission unit.
The application also discloses combustible gas detection equipment can include the above-mentioned combustible gas detector, the combustible gas detector among this combustible gas detection equipment can realize the effect that self sensitivity detected.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A combustible gas detector is characterized by comprising a first acquisition module, a second acquisition module, a display module, a control module and a main power supply module;
the main power supply module is respectively connected with the first acquisition module, the second acquisition module, the display module and the control module; the first acquisition module, the second acquisition module and the display module are all connected with the control module;
the main power supply module is used for providing power for the first acquisition module, the second acquisition module, the display module and the control module; the first acquisition module is used for acquiring the concentration of the combustible gas to generate a first concentration signal and transmitting the first concentration signal to the control module; the second acquisition module is used for acquiring the concentration of the combustible gas to generate a second concentration signal and transmitting the second concentration signal to the control module; the control module is used for controlling the display module to display the first concentration signal; the control module is further used for controlling the display module to display fault information under the condition that the difference value between the first concentration signal and the second concentration signal is larger than a preset value.
2. The combustible gas detector of claim 1 wherein the first acquisition module comprises a first gas sensor, a first signal processing unit and a first power supply unit;
the first power supply unit is respectively connected with the first gas sensor and the first signal processing unit, the first gas sensor is connected with the input end of the first signal processing unit, and the output end of the first signal processing unit is connected with the control module;
the first power supply unit is used for supplying power to the first gas sensor and the first signal processing unit; the first gas sensor is used for collecting the concentration of combustible gas to generate a first gas concentration signal and transmitting the first gas concentration signal to the first signal processing unit; the first signal processing unit is used for amplifying the first gas concentration signal to obtain the first concentration signal and transmitting the first concentration signal to the control module.
3. The combustible gas detector of claim 1 wherein the second acquisition module comprises a second gas sensor, a second signal processing unit and a second power supply unit;
the second power supply unit is respectively connected with the second gas sensor and the second signal processing unit, the second gas sensor is connected with the input end of the second signal processing unit, and the output end of the second signal processing unit is connected with the control module;
the second power supply unit is used for supplying power to the second gas sensor and the second signal processing unit; the second gas sensor is used for collecting the concentration of combustible gas to generate a second gas concentration signal and transmitting the second gas concentration signal to the second signal processing unit; the second signal processing unit is used for amplifying the second gas concentration signal to obtain a second concentration signal and transmitting the second concentration signal to the control module.
4. The combustible gas detector of claim 1 wherein the control module comprises a digital-to-analog conversion unit and a processor unit;
the input end of the digital-to-analog conversion unit is respectively connected with the first acquisition module and the second acquisition module, and the output end of the digital-to-analog conversion unit and the display module are both connected with the processor unit;
the digital-to-analog conversion unit is used for performing analog-to-digital conversion on the first concentration signal and the second concentration signal and transmitting the converted first concentration signal and the converted second concentration signal to the processor unit; the processor unit is used for controlling the display module to display the first concentration signal; the processor unit is further used for controlling the display module to display fault information under the condition that the difference value of the first concentration signal and the second concentration signal is larger than a preset value.
5. The combustible gas detector of claim 4 wherein the control module further comprises a dropout detection unit;
the input end of the falling detection unit is connected with the first acquisition module, and the output end of the falling detection unit is connected with the processor unit;
the falling detection unit is used for collecting the voltage of the output end of the first collection module, generating a falling signal under the condition that the voltage of the output end meets a preset condition, and transmitting the falling signal to the processor unit; the processor unit is also used for controlling the display module to display the falling fault information according to the falling signal.
6. The combustible gas detector of claim 4 wherein the control module further comprises a first power supply detection unit;
the input end of the first power supply detection unit is connected with the output end of the main power supply module, and the output end of the first power supply detection unit is connected with the processor unit;
the first power supply detection unit is used for acquiring a first voltage signal output by the main power supply module and transmitting the first voltage signal to the processor unit; the processor unit is further used for controlling the display module to display first power failure information when the first voltage signal exceeds a first preset voltage range.
7. The combustible gas detector of claim 4 wherein the control module further comprises a second power supply detection unit;
the input end of the second power supply detection unit is connected with a power supply, and the output end of the second power supply detection unit is connected with the processor unit;
the second power supply detection unit is used for acquiring a second voltage signal output by the power supply and transmitting the second voltage signal to the processor unit; the processor unit is further configured to control the display module to display second power failure information when the second voltage signal exceeds a second preset voltage range.
8. The combustible gas detector of any one of claims 1 to 7 further comprising an alarm module;
the alarm module is connected with the control module;
the control module is also used for controlling the alarm module to alarm under the condition that the first concentration signal is greater than the early warning value.
9. The combustible gas detector of any one of claims 1 to 7 further comprising a communication module;
the communication module is connected with the control module;
the control module is also used for communicating with an upper computer through the communication module.
10. A combustible gas detection apparatus comprising the combustible gas detector of any one of claims 1 to 9.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114705798A (en) * | 2022-02-28 | 2022-07-05 | 江苏南大光电材料股份有限公司 | GC-AED (gas chromatography-AED) analysis and detection technology and method for germane impurities with ppb content of high-purity phosphane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114705798A (en) * | 2022-02-28 | 2022-07-05 | 江苏南大光电材料股份有限公司 | GC-AED (gas chromatography-AED) analysis and detection technology and method for germane impurities with ppb content of high-purity phosphane |
| WO2023159789A1 (en) * | 2022-02-28 | 2023-08-31 | 江苏南大光电材料股份有限公司 | Gc-aed related technology and method for analysis and detection for ppb content of germane impurities in high purity phosphine |
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