CN213364716U - Gas detector - Google Patents
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- CN213364716U CN213364716U CN202022781648.0U CN202022781648U CN213364716U CN 213364716 U CN213364716 U CN 213364716U CN 202022781648 U CN202022781648 U CN 202022781648U CN 213364716 U CN213364716 U CN 213364716U
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Abstract
The utility model provides a pair of gas detector is applied to gaseous detection technical field, and this gas detector includes sensor module, main control unit, wireless transmission module to and wired transmission module, and sensor module detects gas concentration and exports the digital quantity signal that corresponds with gas concentration, and main control unit calculates and obtains the gas concentration value based on the digital quantity signal that obtains; the wireless transmission module and the wired transmission module are respectively connected with the main controller, the wireless transmission module transmits the gas concentration value in a preset wireless transmission mode, and meanwhile, the wired transmission module transmits the gas concentration value in a preset wired transmission mode. The utility model provides a gas detector, on the basis of the wire transmission that prior art adopted, realize the wireless transmission of gas concentration value through wireless transmission module, broken through the restriction of wire transmission mode to transmission distance to make and to set up gas detector in the bigger within range that uses the central control room as the center, satisfy practical application's demand.
Description
Technical Field
The utility model belongs to the technical field of gaseous detection, especially, relate to a gas detector.
Background
In the daily production of departments such as petroleum, chemical industry, rubber, leather, metallurgy, environmental protection, fire control, municipal administration and the like, the leakage or seepage of toxic and harmful gas and flammable and explosive gas can be avoided, so that the toxic, harmful, flammable and explosive gas can exist in the working environment where a worker is located more or less, the environment can bring great damage to the health of the worker, and the life safety of the worker is threatened.
In order to avoid the occurrence of poisoning or explosion accidents, the gas concentration of dangerous gas in the working environment is monitored, and a gas detector is required to be arranged in the scene. The existing gas detector is mainly composed of a gas sensor, a signal processor, a display unit and a transmission unit, wherein the gas sensor converts the gas concentration of hazardous gas into an electric signal, the signal processor calculates a corresponding concentration value based on the electric signal, and when the concentration of the hazardous gas in the air exceeds the standard, audible and visual alarm is carried out. The obtained concentration value can be displayed through the display unit, and meanwhile, the transmission unit needs to transmit the obtained concentration value to the central control room.
However, most of the transmission units in the existing gas detectors adopt a wired transmission mode such as a three-wire system 4-20mA or a four-wire system RS485, and the concentration value of the gas needs to be converted into a corresponding analog signal quantity during transmission, and because the analog signal has inevitable attenuation during transmission, the effective transmission distance of the wired transmission mode is limited, and the gas detector cannot be arranged in a range farther away from a central control room, which is difficult to meet the requirements of practical application.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a gas detector can be according to predetermineeing wireless transmission mode transmission gas concentration value, satisfies the practical application demand that sets up gas detector in the wider range, and concrete scheme is as follows:
the utility model provides a gas detector, include: a sensor module, a main controller, a wireless transmission module, and a wired transmission module, wherein,
the sensor module detects the gas concentration and outputs a digital quantity signal corresponding to the gas concentration;
the main controller is connected with the sensor module and calculates a gas concentration value based on the digital quantity signal;
the wireless transmission module is connected with the main controller and transmits the gas concentration value in a preset wireless transmission mode;
and the wired transmission module is connected with the main controller and transmits the gas concentration value in a preset wired transmission mode.
Optionally, the sensor module is integrated with a gas sensor and a signal processing module, wherein,
the gas sensor detects the gas concentration and outputs an analog quantity signal corresponding to the gas concentration;
the signal processing module is detachably connected with the main controller and converts the analog quantity signal into a digital quantity signal.
Optionally, the utility model provides a gas detector still includes: an alarm module, wherein,
the main controller is connected with the alarm module;
the main controller outputs an alarm instruction when the gas concentration value is greater than a preset concentration threshold value, wherein the alarm instruction comprises the gas concentration value;
and the alarm module broadcasts the gas concentration value according to the alarm instruction and presets danger avoiding prompt information.
Optionally, the alarm module is provided with an alarm lamp, and the alarm module is further configured to turn on the alarm lamp according to the alarm instruction.
Optionally, the wireless transmission module includes a transmission controller and a communication module, wherein,
the transmission controller is respectively connected with the main controller and the communication module;
and the transmission controller receives the gas concentration value and controls the communication module to transmit the gas concentration value in a preset wireless transmission mode.
Optionally, the wired transmission module includes a digital-to-analog conversion module, wherein,
and the digital-to-analog conversion module is used for converting the gas concentration value into a corresponding analog quantity for transmission according to a preset wired transmission mode.
Optionally, the utility model provides a gas detector still includes: a display module, wherein,
the display module is connected with the main controller and used for receiving and displaying the gas concentration value.
Optionally, the utility model provides a gas detector still includes: a power module, wherein,
the power module is used for providing working power for the sensor module, the main controller, the wireless transmission module, the wired transmission module, the alarm module and the display module.
Optionally, the utility model provides a gas detector still includes: a monitoring module, wherein,
the monitoring module is connected with the power supply module and used for monitoring the output voltage of the power supply module.
Optionally, the utility model provides a gas detector still includes: a module is provided, wherein,
the setting module is connected with the main controller;
the setting module is used for inputting a preset setting instruction to the main controller.
The utility model provides a gas detector, including sensor module, main control unit, wireless transmission module to and wired transmission module, sensor module detects gas concentration and outputs the digital quantity signal that corresponds with gas concentration, and main control unit calculates and obtains the gas concentration value based on the digital quantity signal that obtains; the wireless transmission module and the wired transmission module are respectively connected with the main controller, the wireless transmission module transmits the gas concentration value in a preset wireless transmission mode, and meanwhile, the wired transmission module transmits the gas concentration value in a preset wired transmission mode. The utility model provides a gas detector, on the basis of the wire transmission that prior art adopted, realize the wireless transmission of gas concentration value through wireless transmission module, broken through the restriction of wire transmission mode to transmission distance to make and to set up gas detector in the bigger within range that uses the central control room as the center, satisfy practical application's demand.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a block diagram of a gas detector according to an embodiment of the present invention;
fig. 2 is a circuit topology diagram of a wired transmission module according to an embodiment of the present invention;
fig. 3 is a block diagram of another gas detector according to an embodiment of the present invention;
fig. 4a is a circuit topology diagram of a first part of a sensor module provided by an embodiment of the present invention;
fig. 4b is a circuit topology diagram of a second part of a sensor module according to an embodiment of the present invention;
fig. 4c is a circuit topology diagram of a third part of a sensor module provided by the embodiment of the present invention;
fig. 5 is a block diagram illustrating a structure of another gas detector according to an embodiment of the present invention;
fig. 6 is a circuit topology diagram of an alarm device provided by the embodiment of the present invention;
fig. 7 is a block diagram of another gas detector according to an embodiment of the present invention;
fig. 8 is a block diagram of another gas detector according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Optionally, referring to fig. 1, fig. 1 is a block diagram of a gas detector provided in an embodiment of the present invention, where the gas detector provided in this embodiment includes: a sensor module 10, a main controller 20, a wireless transmission module 30, and a wired transmission module 40, wherein,
the sensor module 10 can detect the gas concentration of the hazardous gas to be detected and output a digital quantity signal corresponding to the gas concentration to the main controller 20. The main controller 20 is connected to the sensor module 10, receives the digital signal from the sensor module 10, and calculates a corresponding gas concentration value based on the digital signal.
It should be noted that, for the specific implementation process of the main controller 20 calculating the gas concentration value based on the obtained digital quantity signal, the implementation can be realized by referring to the prior art, and any method capable of implementing the calculation process in the prior art is optional, and the present invention does not limit this.
Further, the wired transmission module 30 and the wireless transmission module 40 are respectively connected to the main controller 20, and receive the gas concentration value output by the main controller 20. For the wireless transmission module 40, after the gas concentration value is obtained, the gas concentration value is transmitted to an upper control system, such as a central control room, in a preset wireless transmission manner. Accordingly, the wired transmission module 30 transmits the gas concentration value to other control systems that need to receive the gas concentration value in a preset wired transmission manner, which may be a central control room.
Optionally, the wireless transmission module may be implemented based on a 4G wireless communication technology, and specifically, the wireless communication module may include a transmission controller and a communication module. In practical application, the transmission controller receives the gas concentration value sent by the main controller through a preset communication line, and further controls the communication module to transmit the gas concentration value in a preset wireless transmission mode, for example, the obtained gas concentration value is transmitted in a 4G wireless communication mode. Compared with the prior art, the 4G wireless communication is adopted to illustrate the gas concentration value, so that the stability, reliability and effectiveness of transmission can be effectively guaranteed, and the wireless transmission mode is adopted, construction wiring is not needed, and labor and construction cost are directly saved.
Optionally, the wired transmission module may further include a digital-to-analog conversion module, and the gas concentration value sent by the main controller is converted into a corresponding analog quantity by the digital-to-analog conversion module, and then is transmitted in a preset wired transmission manner. In practical application, the wired transmission mode can be realized by adopting a three-wire system 4-20mA mode or a four-wire system RS485 mode and the like.
For example, referring to fig. 2, fig. 2 is a circuit topology diagram of a wired transmission module according to an embodiment of the present invention, and the wired transmission module can implement 4-20mA wired transmission. It should be noted that any mode that can adopt wired transmission, the method of transmission gas concentration value is all optional, does not surpass the core scope of the utility model discloses under the prerequisite of the scope, all belong to the utility model discloses the within range of protection equally.
It is conceivable that, for specific applications, wireless transmission or wired transmission is selected, and users can flexibly select the wireless transmission or the wired transmission according to their own needs.
To sum up, the embodiment of the utility model provides a gas detector, on wire transmission's basis, newly-increased wireless transmission module can realize the wireless transmission of gas concentration value through wireless transmission module, has broken through wire transmission mode to transmission distance's restriction to make and to set up gas detector in the bigger within range that uses the central control room as the center, satisfy practical application's demand.
Optionally, referring to fig. 3, fig. 3 is a block diagram of another gas detector provided in the embodiment of the present invention, and on the basis of the embodiment shown in fig. 1, the embodiment of the present invention provides an optional configuration of a sensor module, and the sensor module 10 is integrated with a gas sensor 110 and a signal processing circuit 120.
It should be emphasized that, in the present embodiment, the sensor module 10 adopts an integrated intelligent sensor module, that is, the gas sensor 110 and the signal processing circuit 120 are integrally disposed, the gas sensor 110 detects the gas concentration of the gas to be detected and outputs an analog quantity signal corresponding to the gas concentration, the input end of the signal processing module 120 is connected to the output end of the gas sensor 110, the analog quantity signal obtained after receiving the analog quantity signal of the gas sensor 110 is converted into a digital quantity signal, further, the output end of the signal processing module 120 is detachably connected to the main controller 20, and the digital quantity signal obtained after conversion is sent to the main controller 20.
Alternatively, for alternative constructions of the sensor module 10, reference may be made to fig. 4 a-4 c. Specifically, the signal processing module 120 of the sensor module 10 can be roughly divided into a primary amplifying circuit, a post-amplifying circuit, and a signal processor, wherein fig. 4a shows the connection between the gas sensor 110 and the primary amplifying circuit, fig. 4b shows the circuit topology of the post-amplifying circuit, and the connection terminal SOUT in fig. 4a and the connection terminal SOUT in fig. 4b are correspondingly connected in practical application. Further, fig. 4c is a schematic diagram of the signal processor and the reset circuit, and the connection terminal AD0 in fig. 4b and the connection terminal AD0 in fig. 4c are correspondingly connected in practical applications.
Based on the above, it can be seen that the sensor module adopted in this embodiment is provided with an independent signal processor (i.e., the sensor single chip shown in fig. 4 c), and can automatically complete the conversion from the analog quantity signal to the digital quantity signal without depending on the main controller of the gas detector itself, so that plug and play can be supported, and the gas detector is maintenance-free and calibration-free, does not need to be powered off on site, and can bring great timeliness to maintenance work.
Optionally, referring to fig. 5, fig. 5 is a block diagram of a structure of another gas detector provided in the embodiment of the present invention, and on the basis of the embodiment shown in fig. 3, the gas detector provided in this embodiment further includes: an alarm module 50.
Specifically, the main controller 20 is connected to the alarm module 50, and after the main controller 20 calculates the gas concentration value, the obtained gas concentration value is compared with a preset concentration threshold value, and when the obtained gas concentration value is greater than the preset concentration threshold value, an alarm instruction including the gas concentration value is output to the alarm module 50. The alarm module 50 broadcasts the gas concentration value according to the alarm instruction and presets danger avoiding prompt information.
Optionally, the alarm module 50 is further provided with an alarm lamp, and the alarm lamp is turned on according to the alarm instruction to realize sound-light alarm. Referring to fig. 6, fig. 6 is a circuit topology diagram of the alarm device according to the embodiment of the present invention, of course, the embodiment shown in fig. 6 is only an optional implementation manner, and is not used as the only limitation of the alarm device according to the present invention.
Optionally, the alarm module may further include an external interface, for example, a relay for external connection is provided, and the external interface provides an alarm signal to other alarm devices or the linkage extension set.
It should be noted that, in the alarm device provided in the gas detector in the prior art, the sound alarm is only a simple alarm prompt tone, the field personnel cannot obtain the current specific gas concentration value, and the field personnel do not know what kind of risk avoiding measures to be taken when the field personnel are in a dangerous situation due to the deficiency of safety knowledge or education and training. Through the embodiment of the utility model provides a gas detector, alarm device not only can be clear and definite report real-time gas concentration value, but also can play corresponding presetting and keep away dangerous prompt message, guide the field personnel in time to keep away the danger, and can provide clear and definite instruction of keeping away the danger, adopt safety measure to strive for the golden time for the field personnel, greatly reduce and take place dangerous probability.
Optionally, referring to fig. 7, fig. 7 is a block diagram of a structure of another gas detector provided in the embodiment of the present invention, and on the basis of the embodiment shown in fig. 6, the gas detector provided in this embodiment further includes: a display module 60 and a setup module 70.
The display module 60 is connected to the main controller 20, and receives and displays the gas concentration value sent by the main controller 20. Optionally, display module 60 can choose for use the LED circuit to build, also can choose for use other display device to realize, and any realization that can show the gas concentration value that main control unit 20 sent is all optional, all belongs to equally the utility model discloses the within range of protection.
The setting module 70 is connected to the main controller 20, and the setting module 70 is configured to input a preset setting instruction to the main controller 20, for example, the preset concentration threshold may be set, and the alarm volume of the alarm module and the preset risk avoidance information may be adjusted.
Optionally, referring to fig. 8, fig. 8 is a block diagram of another gas detector provided in the embodiment of the present invention, and on the basis of the embodiment shown in fig. 7, the gas detector provided in this embodiment further includes: a power module 80 and a monitoring module 90.
The power module 80 provides operating power to the sensor module 10, the main controller 20, the wireless transmission module 40, the wired transmission module 30, the alarm module 50, and the display module 60, respectively. Specifically, in practical applications, the operating voltages of the components included in the gas detector may be different, so that the power module 80 may be further specifically divided into a main power supply and a plurality of regulated power supplies, wherein the main power supply is configured to convert a power frequency power supply into a direct current power supply, the input end of each regulated power supply is connected to the output end of the main power supply, and the output end of each regulated power supply is connected to each corresponding component and outputs an operating voltage meeting the operating requirements of the corresponding component.
Further, in order to prevent the power module voltage fluctuation from affecting the accuracy of the gas concentration value, the present embodiment provides a monitoring module 90. The monitoring module 90 is connected to the power module 80 for monitoring the output voltage of the power module 80. The monitoring module 90 can be realized based on the prior art, for example, a watchdog circuit can be specifically selected for use, the utility model discloses do not specifically limit to this.
Optionally, the gas detector provided by any one of the above embodiments may adopt an integrated explosion-proof design, does not need an external device, and has high safety.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, but also include other elements not expressly listed or inherent to such article or device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in the article or device comprising the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A gas detector, comprising: a sensor module, a main controller, a wireless transmission module, and a wired transmission module, wherein,
the sensor module detects the gas concentration and outputs a digital quantity signal corresponding to the gas concentration;
the main controller is connected with the sensor module and calculates a gas concentration value based on the digital quantity signal;
the wireless transmission module is connected with the main controller and transmits the gas concentration value in a preset wireless transmission mode;
and the wired transmission module is connected with the main controller and transmits the gas concentration value in a preset wired transmission mode.
2. The gas detector of claim 1, wherein the sensor module integrates a gas sensor and a signal processing module, wherein,
the gas sensor detects the gas concentration and outputs an analog quantity signal corresponding to the gas concentration;
the signal processing module is detachably connected with the main controller and converts the analog quantity signal into a digital quantity signal.
3. The gas detector of claim 1, further comprising: an alarm module, wherein,
the main controller is connected with the alarm module;
the main controller outputs an alarm instruction when the gas concentration value is greater than a preset concentration threshold value, wherein the alarm instruction comprises the gas concentration value;
and the alarm module broadcasts the gas concentration value according to the alarm instruction and presets danger avoiding prompt information.
4. The gas detector of claim 3, wherein the alarm module is provided with an alarm lamp, and the alarm module is further configured to turn on the alarm lamp according to the alarm command.
5. The gas detector of claim 1, wherein the wireless transmission module comprises a transmission controller and a communication module, wherein,
the transmission controller is respectively connected with the main controller and the communication module;
and the transmission controller receives the gas concentration value and controls the communication module to transmit the gas concentration value in a preset wireless transmission mode.
6. The gas detector of claim 1, wherein the wired transmission module comprises a digital-to-analog conversion module, wherein,
and the digital-to-analog conversion module is used for converting the gas concentration value into a corresponding analog quantity for transmission according to a preset wired transmission mode.
7. The gas detector of claim 3, further comprising: a display module, wherein,
the display module is connected with the main controller and used for receiving and displaying the gas concentration value.
8. The gas detector of claim 7, further comprising: a power module, wherein,
the power module is used for providing working power for the sensor module, the main controller, the wireless transmission module, the wired transmission module, the alarm module and the display module.
9. The gas detector of claim 8, further comprising: a monitoring module, wherein,
the monitoring module is connected with the power supply module and used for monitoring the output voltage of the power supply module.
10. A gas detector according to any of claims 1-9, further comprising: a module is provided, wherein,
the setting module is connected with the main controller;
the setting module is used for inputting a preset setting instruction to the main controller.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112305174A (en) * | 2020-11-26 | 2021-02-02 | 北京中电华劳科技有限公司 | a gas detector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112305174A (en) * | 2020-11-26 | 2021-02-02 | 北京中电华劳科技有限公司 | a gas detector |
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