CN214622305U - Domestic wall-hanging laser methane alarm - Google Patents
Domestic wall-hanging laser methane alarm Download PDFInfo
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- CN214622305U CN214622305U CN202121092804.0U CN202121092804U CN214622305U CN 214622305 U CN214622305 U CN 214622305U CN 202121092804 U CN202121092804 U CN 202121092804U CN 214622305 U CN214622305 U CN 214622305U
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Abstract
The utility model relates to a methane alarm equipment technical field provides a domestic wall-hanging laser methane alarm appearance, include: the circuit comprises a shell, an upper circuit board and a lower circuit board; the circuit upper board and the circuit lower board are fixed together and arranged in the shell; the upper board of the circuit is provided with a laser methane sensing module and a control unit; the laser methane sensing module is electrically connected with the control unit; the circuit lower plate is provided with a buzzer, an alarm indicator lamp, a wifi module and a power supply module; the alarm indicator lamp extends out of the shell; the buzzer, the alarm indicator lamp and the wifi module are respectively and electrically connected with the control unit; the power supply module is respectively electrically connected with the circuit upper plate and the circuit lower plate and supplies power to all components on the circuit upper plate and the circuit lower plate. The utility model discloses can improve methane monitoring's stability and reliability to realize intelligent monitoring data.
Description
Technical Field
The utility model relates to a methane alarm equipment technical field especially relates to a domestic wall-hanging laser methane alarm.
Background
Methane is a flammable and explosive gas, and is the main component of mine gas, household gas and natural gas. It is believed that methane has an explosion lower limit of 4.9% and an explosion upper limit of 16.0% in the atmosphere, and is most explosive at a concentration of 9.5%. In order to solve the outstanding problems of methane explosion and the like, the monitoring of methane needs to be enhanced, and the main device for monitoring methane is a gas sensor.
At present, most of household methane alarms are manufactured by adopting a thermocatalysis principle, and have a plurality of defects compared with laser type equipment: 1. the test sensitivity is low, and the response speed is slow. 2. The service life is short, and the phenomenon of false alarm is easy to occur. 3. The sensor is easy to damp, corrode and oxidize, and has the advantages of low measurement precision, poor stability, short service life and the like. 4. The system can only meet the detection and alarm requirements of people at home, does not have the internet information transmission function, does not have a connected safety supervision system, and cannot achieve timely management and notification.
SUMMERY OF THE UTILITY MODEL
The utility model discloses mainly solve prior art's above-mentioned technical problem, provide a domestic wall-hanging laser methane alarm to reach the stability and the reliability that improve the methane monitoring, and realize intelligent monitoring data.
The utility model provides a domestic wall-hanging laser methane alarm, include: a housing, an upper circuit board 6 and a lower circuit board 7;
the circuit upper plate 6 and the circuit lower plate 7 are fixed together and arranged in the shell;
the circuit upper plate 6 is provided with a laser methane sensing module 3 and a control unit; the laser methane sensing module 3 is electrically connected with the control unit;
the circuit lower plate 7 is provided with a buzzer, an alarm indicator lamp 4, a wifi module 5 and a power supply module 8; the alarm indicator lamp 4 extends out of the shell;
the buzzer, the alarm indicator lamp 4 and the wifi module 5 are respectively and electrically connected with the control unit;
the power module 8 is electrically connected with the circuit upper board 6 and the circuit lower board 7 respectively to supply power to each component on the circuit upper board 6 and the circuit lower board 7.
Preferably, the laser methane sensing module 3 is connected with the circuit upper board 6 by direct-insert welding.
Preferably, the laser methane sensing module 3 comprises a laser and a laser detector.
Preferably, the control unit includes: the device comprises a micro-control processing circuit, a modulation circuit, an AC/DC conversion circuit, a singlechip module, an output control circuit and an alarm circuit;
the micro-control processing circuit is electrically connected with the modulation circuit, and the modulation circuit is electrically connected with the laser methane sensing module 3;
the laser methane sensing module 3 is electrically connected with an AC/DC conversion circuit, and the AC/DC conversion circuit is electrically connected with the single chip microcomputer module;
the single chip microcomputer module is electrically connected with the output control circuit;
the output control circuit is respectively and electrically connected with the alarm circuit and the wifi module 5;
the alarm circuit is respectively and electrically connected with the buzzer and the alarm indicator lamp 4.
Preferably, the wifi module 5 is in signal connection with the information monitoring substation.
Preferably, the housing includes: a main case 2, an upper case 1 disposed at an upper portion of the main case 2, and a lower case 9 disposed at a lower portion of the main case 2.
Preferably, a sound through hole is disposed on the upper case 1.
Preferably, the lower shell 9 is provided with a mounting hole or a mounting hook.
The utility model provides a pair of domestic wall-hanging laser methane alarm, have high stability, easily installation, ultra-low power consumption, reaction rate are fast, have only discernment to methane gas, do not receive the apparent advantage characteristics of interference such as other gas, steam, dust. Possess wifi data transmission function simultaneously, abundant and internet combine, can intelligent monitoring data, perfect warning safety supervision network, make the user prevent the trouble with in the bud, no matter at home all do not have safe aftercare worry. The utility model discloses can use in civil safety precaution engineering, the multi-purpose methane of being used for the family leaks the warning.
Drawings
Fig. 1 is an exploded view of a household wall-mounted laser methane alarm apparatus provided by the present invention;
fig. 2 is a connection block diagram of the control unit provided by the present invention.
Reference numerals: 1. an upper shell; 2. a main housing; 3. a laser methane sensing module; 4. an alarm indicator light; 5. a wifi module; 6. a circuit upper board; 7. a circuit upper board; 8. a power supply module; 9. a lower shell.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant portions of the present invention are shown in the drawings.
As shown in fig. 1, the embodiment of the utility model provides a domestic wall-hanging laser methane alarm, include: a housing, an upper circuit board 6 and a lower circuit board 7.
The housing includes: a main case 2, an upper case 1 disposed at an upper portion of the main case 2, and a lower case 9 disposed at a lower portion of the main case 2. The upper case 1 is provided with a sound through hole. The lower shell 9 is provided with a mounting hole or a mounting hook for wall hanging.
The circuit upper plate 6 and the circuit lower plate 7 are fixed together and arranged in the shell; the circuit board is fixed through screws.
The circuit upper plate 6 is provided with a laser methane sensing module 3 and a control unit; the laser methane sensing module 3 is electrically connected with the control unit; specifically, the laser methane sensing module 3 is connected with the circuit upper board 6 in a direct-insert welding mode, so that the reliability is high.
The circuit lower plate 7 is provided with a buzzer, an alarm indicator lamp 4, a wifi module 5 and a power supply module 8; the alarm indicator lamp 4 extends out of the shell.
The buzzer, the alarm indicator lamp 4 and the wifi module 5 are respectively electrically connected with the control unit.
The power module 8 is electrically connected with the circuit upper board 6 and the circuit lower board 7 respectively to supply power to each component on the circuit upper board 6 and the circuit lower board 7. The power supply module 8 converts the dc voltage supplied from the associated device into a chip voltage, and supplies the chip voltage to the circuit of the entire device.
In this embodiment, the laser methane sensing module 3 includes a laser and a laser detector. And detecting the concentration of methane by adopting a laser based on a light absorption principle. The working principle is as follows: the modulation circuit controls the laser to emit laser with a certain frequency by modulating the current of the laser, methane gas is absorbed when the laser meets methane in the air, the laser intensity detected by the laser detector is reduced, and the higher the methane concentration is, the lower the laser signal intensity is. The laser methane sensing module 3 adopts tunable semiconductor laser absorption spectrum technology (TDLAS technology for short) and mainly utilizes the characteristics that the narrow line width and the wavelength of a tunable semiconductor laser change along with the injection current to realize the measurement of single or a plurality of absorption lines of molecules which are very close and difficult to distinguish. The TDLAS technology is based on a tunable diode laser, can finely adjust output laser wavelength by controlling the temperature or injection current of the diode laser, and can obtain a single-line absorption spectral line containing measured gas information and a background spectral line not containing the measured gas information in a scanning period, thereby qualitatively and quantitatively analyzing the gas.
The electric control part of the embodiment is explained as follows:
as shown in fig. 2, the control unit includes: the device comprises a micro-control processing circuit, a modulation circuit, an AC/DC conversion circuit, a singlechip module, an output control circuit and an alarm circuit; the micro-control processing circuit is electrically connected with the modulation circuit, and the modulation circuit is electrically connected with the laser methane sensing module 3; the laser methane sensing module 3 is electrically connected with an AC/DC conversion circuit, and the AC/DC conversion circuit is electrically connected with the single chip microcomputer module; the single chip microcomputer module is electrically connected with the output control circuit; the output control circuit is respectively and electrically connected with the alarm circuit and the wifi module 5; the alarm circuit is respectively and electrically connected with the buzzer and the alarm indicator lamp 4. And the wifi module 5 is in signal connection with the information monitoring substation.
The working process of the household wall-mounted laser methane alarm of the embodiment is as follows:
power-on self-test: the buzzer sounds, the indicator light is switched to red and green, then the lamp enters a normal working state, and the green light is normally on.
And (3) monitoring process: the laser methane sensing module collects methane concentration information, the micro-control processing circuit sends a modulation signal to the laser methane sensing module through the modulation circuit, the laser methane sensing module converts the signal demodulated by the modulation circuit into a digital signal through the AC/DC voltage conversion circuit, the digital signal is sent to the single chip microcomputer module for processing, and the frequency signal corresponding to the methane concentration value is output through the output control circuit. When the concentration of methane exceeds the set alarm point, the alarm circuit controls the buzzer to send out sound alarm signals and the alarm lamp 4 to send out light alarm signals. Then, the single chip microcomputer module transmits the data transmission to the information monitoring substation through the wifi module through the output control circuit. When equipment reported to the police, the red light pilot lamp often brightened and was accompanied the buzzing warning, sends alarm information first time for owner and safety supervision system's information monitoring substation through voice broadcast and wifi transmission form simultaneously.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or some or all of the technical features may be equivalently replaced, without substantially departing from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a domestic wall-hanging laser methane alarm, its characterized in that includes: the circuit comprises a shell, an upper circuit board (6) and a lower circuit board (7);
the circuit upper plate (6) and the circuit lower plate (7) are fixed together and arranged in the shell;
the circuit upper plate (6) is provided with a laser methane sensing module (3) and a control unit; the laser methane sensing module (3) is electrically connected with the control unit;
the circuit lower plate (7) is provided with a buzzer, an alarm indicator lamp (4), a wifi module (5) and a power module (8); the alarm indicator lamp (4) extends out of the shell;
the buzzer, the alarm indicator lamp (4) and the wifi module (5) are respectively and electrically connected with the control unit;
the power supply module (8) is electrically connected with the circuit upper plate (6) and the circuit lower plate (7) respectively and supplies power to all components on the circuit upper plate (6) and the circuit lower plate (7).
2. The household wall-mounted laser methane alarm apparatus according to claim 1, wherein the laser methane sensing module (3) is connected with the circuit upper board (6) by direct plug welding.
3. The home wall-mounted laser methane alarm according to claim 2, wherein the laser methane sensing module (3) comprises a laser and a laser detector.
4. The home wall-mounted laser methane alarm according to claim 1 or 3, wherein the control unit comprises: the device comprises a micro-control processing circuit, a modulation circuit, an AC/DC conversion circuit, a singlechip module, an output control circuit and an alarm circuit;
the micro-control processing circuit is electrically connected with the modulation circuit, and the modulation circuit is electrically connected with the laser methane sensing module (3);
the laser methane sensing module (3) is electrically connected with an AC/DC conversion circuit, and the AC/DC conversion circuit is electrically connected with the single chip microcomputer module;
the single chip microcomputer module is electrically connected with the output control circuit;
the output control circuit is respectively and electrically connected with the alarm circuit and the wifi module (5);
the alarm circuit is respectively and electrically connected with the buzzer and the alarm indicator lamp (4).
5. The household wall-mounted laser methane alarm instrument according to claim 4, wherein the wifi module (5) is in signal connection with the information monitoring substation.
6. The home wall hung laser methane alarm according to claim 1, wherein the housing comprises: the device comprises a main shell (2), an upper shell (1) arranged on the upper part of the main shell (2) and a lower shell (9) arranged on the lower part of the main shell (2).
7. The household wall-mounted laser methane alarm apparatus according to claim 6, wherein the upper housing (1) is provided with a sound through hole.
8. The household wall-mounted laser methane alarm apparatus according to claim 6, wherein the lower shell (9) is provided with mounting holes or mounting hooks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121092804.0U CN214622305U (en) | 2021-05-21 | 2021-05-21 | Domestic wall-hanging laser methane alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121092804.0U CN214622305U (en) | 2021-05-21 | 2021-05-21 | Domestic wall-hanging laser methane alarm |
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| Publication Number | Publication Date |
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| CN214622305U true CN214622305U (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121092804.0U Active CN214622305U (en) | 2021-05-21 | 2021-05-21 | Domestic wall-hanging laser methane alarm |
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| CN (1) | CN214622305U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114814091A (en) * | 2022-04-08 | 2022-07-29 | 天津光电华典科技有限公司 | Atmospheric gaseous pollutant detection method and device and electronic equipment |
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2021
- 2021-05-21 CN CN202121092804.0U patent/CN214622305U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114814091A (en) * | 2022-04-08 | 2022-07-29 | 天津光电华典科技有限公司 | Atmospheric gaseous pollutant detection method and device and electronic equipment |
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