CN217332146U - Remote measuring type internet of things laser methane leakage monitor - Google Patents
Remote measuring type internet of things laser methane leakage monitor Download PDFInfo
- Publication number
- CN217332146U CN217332146U CN202123376850.6U CN202123376850U CN217332146U CN 217332146 U CN217332146 U CN 217332146U CN 202123376850 U CN202123376850 U CN 202123376850U CN 217332146 U CN217332146 U CN 217332146U
- Authority
- CN
- China
- Prior art keywords
- laser
- methane
- detector
- monitor
- receiving optical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a telemetering measurement formula thing networking type laser methane leakage monitor, the load simulator comprises a case, be equipped with on the machine case and measure laser light-emitting window, instruct laser light-emitting window and laser receiving optical window, machine incasement portion is including measuring laser instrument, instruction laser instrument, detector and circuit board, the machine incasement still includes thing networking module, the circuit board with instruct laser instrument, measurement laser instrument, detector electric connection, it passes through to measure laser light-emitting window to target emission laser, laser is through target reflection back directive laser receiving optical window, through laser receiving optical window assembles extremely the detector, the signal process of detector output the circuit board is handled, obtains the concentration information of methane. The utility model provides a remote measurement formula thing networking type laser methane leaks monitor can reach that coverage is wide, response speed is fast, low cost, high reliable effect.
Description
Technical Field
The utility model relates to a gas monitoring technology field especially relates to a remote measurement formula thing networking type laser methane leaks monitor.
Background
With the great demand of natural gas stations, pipe networks and natural gas users on natural gas leakage monitoring, explosion accidents caused by current natural gas leakage frequently occur, and the trend of concentrating on urban sub-pipe networks and user terminals is gradually shown.
At present, a large amount of traditional thermal conductivity type, catalytic combustion type and infrared type point sensors are adopted for monitoring methane leakage. The traditional point type sensor uses a filter screen and pumps and other devices, and the problems of blockage, environmental pollution and the like easily occur.
A small amount of laser spectrum type sensors are adopted for monitoring, a small amount of laser methane point type sensors are also used for the urban sub-pipe network and the user side, the gas chambers are arranged in the point type sensors, gas detection is finished after gas is diffused to the gas chambers, and the defects of small coverage area, easiness in interference, easiness in poisoning, low response speed and the like are presented. Existing methane monitors generally limit the effectiveness and reliability of natural gas leak monitoring.
SUMMERY OF THE UTILITY MODEL
In view of present methane leak detector exist the coverage area little, easily receive the interference, easily poisoned, response speed shortcoming such as slow, the utility model provides a remote measuring formula thing networking type laser methane leak detector through receiving and dispatching integral type structure, adopts laser spectrum gas detection technique remote measuring formula to survey, can reach that coverage is wide, response speed is fast, low-cost, high reliable effect.
In order to achieve the above object, the embodiments of the present invention adopt the following technical solutions:
a telemetering type Internet of things laser methane leakage monitor comprises a case, wherein a measuring laser light outlet, an indicating laser light outlet and a laser receiving optical window are arranged on the case, and the telemetering type Internet of things laser methane leakage monitor is characterized in that the case comprises a measuring laser, an indicating laser, a detector and a circuit board, the case also comprises an Internet of things module, the circuit board is electrically connected with the indicating laser, the measuring laser and the detector, the measuring laser emits laser to a target through the measuring laser light outlet, the laser is emitted to the laser receiving optical window after being reflected by the target and is converged to the detector through the laser receiving optical window, and a signal output by the detector is processed through the circuit board to obtain methane concentration information.
According to an aspect of the utility model, the circuit board is including surveying receiving circuit, laser drive circuit, signal processing circuit, the circuit sets up the detector rear, laser drive circuit respectively with indicate the laser instrument survey laser instrument electric connection, survey receiving circuit respectively with the detector signal processing circuit electric connection.
According to an aspect of the utility model, indicate the laser instrument with measure the laser instrument axis and set up side by side, laser receiving optical window with measure laser light-emitting window, indicate laser light-emitting window axis and set up side by side, laser receiving optical window sets up on measuring the reverberation way of laser instrument, the detector sets up laser receiving optical window rear, the detector with laser receiving optical window axis collineation.
According to the utility model discloses an aspect, be equipped with the alarm lamp on the quick-witted case, quick-witted incasement portion includes alarm lamp drive circuit for control alarm lamp's switch.
According to the utility model discloses an aspect, set up bee calling organ honeycomb holes on the quick-witted case, machine incasement portion sets up bee calling organ, alarm lamp drive circuit is used for regulation control bee calling organ.
According to the utility model discloses an aspect, be equipped with display screen and button on the machine case, machine incasement portion is provided with display screen drive circuit and keying circuit with display screen and keying connection.
According to an aspect of the utility model, still include the AC-DC power, be equipped with power supply and cable interface on the quick-witted case, the power supply pass through power supply and cable interface with telemetering type methane leakage monitor is connected.
According to the utility model discloses an aspect, the thing networking communication chip and the antenna of 4G, NBIOT, LORA agreement are supported in the integration of thing networking module, realize being connected with wireless network.
According to one aspect of the present invention, the laser receiving optical window is a single piece of aspheric surface with large numerical aperture and a large photosensitive surface optical lens.
According to an aspect of the utility model, still include a fixing device that is used for the installation fixed monitor, fixing device includes horizontal locking device, installing support, monitor mounting screw, horizontal locking device includes the boss, installs horizontal axostylus axostyle, horizontal axis locking mounting screw, horizontal locking device with the connection can be dismantled to the installing support, fixing device is used for realizing the arbitrary angular adjustment of special level, perpendicular two-dimensional.
The utility model discloses the advantage of implementing: the remote measurement type internet of things laser methane leakage monitor has the advantages of being free of poisoning, free of interference, wide in coverage range, free of influence of high-temperature and high-humidity environment and high in reliability by adopting a receiving and sending integrated structure and a remote measurement type laser spectrum gas detection technology. Visual indication laser is arranged, and the problem that the traditional laser reflection type and correlation type gas sensors are difficult to align during installation is solved. The laser receiving optical window is a single-chip aspheric surface with large numerical aperture and a large photosensitive surface optical lens, the gas detection can be completed by irradiating a common target with laser due to high detection sensitivity, the installation is convenient, and the use cost is reduced. When the monitor detects that the gas exceeds the lower detection limit, the alarm and the buzzer are started to realize acousto-optic multiple alarm until the alarm is relieved. Meanwhile, an internet of things module is added, real-time monitoring information can be sent to the cloud end through the internet of things, and an attendant is notified through short messages, WeChat messages, telephones and the like, so that remote monitoring can be achieved, operation is convenient, and the application range is wide.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an external view of a remote sensing internet of things type laser methane leakage monitor according to the present invention;
fig. 2 is a schematic cross-sectional view of a telemetering internet-of-things type laser methane leakage monitor according to the present invention;
FIG. 3 is a schematic diagram of a field installation of a telemetry internet of things type laser methane leak monitor according to the present invention;
FIG. 4 is a schematic diagram of a vertical installation of a telemetry internet of things type laser methane leak monitor according to the present invention;
fig. 5 is a schematic hanging installation diagram of the telemetering internet of things type laser methane leakage monitor.
In FIGS. 1-5: laser receiving optical window 1, measure laser light-emitting window 2, instruct laser light-emitting window 3, display screen 4, set up button 5, function button 6, alarm lamp 7, mounting hole 8, receiving optical lens 9, detector 10, laser drive circuit 11, survey receiving circuit 12, alarm lamp circuit 13, display screen drive circuit 14, thing networking module 15, signal processing circuit 16, sealing plug 17, cable 18, mounted position 19, installing support 20, pressing piece 21, monitor mounting screw 22, horizontal locking device 23, locking device locking screw hole 24, fixation nut 25, horizontal axis locking mounting screw 26, installation horizontal axis pole 27, bee calling organ 28.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
As shown in fig. 1 to 5, a telemetering internet of things type laser methane leakage monitor comprises a case, wherein a measurement laser light outlet 2, an indication laser light outlet 3 and a laser receiving optical window 1 are arranged on the case, the case comprises a measurement laser, an indication laser, a detector 10 and a circuit board, the case further comprises an internet of things module 15, the circuit board is electrically connected with the indication laser, the measurement laser and the detector 10, the measurement laser emits laser to a target through the measurement laser light outlet 2, the laser is reflected by the target and then emitted to the laser receiving optical window 1, the laser is converged to the detector 10 through the laser receiving optical window 1, and a signal output by the detector 10 is processed by the circuit board to obtain methane concentration information.
When the telemetering type Internet of things laser methane leakage monitor works, the measuring laser emits measuring laser, the measuring laser is emitted to a target through the measuring laser light outlet 2, the measuring laser is emitted to the laser receiving optical window 1 after being reflected by the target and is converged to the detector 10 through the laser receiving optical window 1, a signal output by the detector 10 is processed through the circuit board, the methane concentration is detected according to resonance absorption of methane gas to specific laser, and the measuring precision is extremely high.
In the embodiment, a laser spectrum gas detection technology is adopted, contact chemical reaction does not occur between light and gas, the components and the form of the gas to be detected cannot be influenced, and compared with a traditional gas sensor, the gas sensor has the characteristics of no poisoning, no interference, no influence of a high-temperature high-humidity environment and higher reliability. Through adopting receiving and dispatching integral type structure telemetering measurement formula observation coverage wider, compare in traditional point type diffusion sensor, the open path of telemetering measurement detects coverage wider, and response speed is fast. Because the coverage is wider, the number of monitors required in a typical scene is less, the laser spectrum is adopted to detect the methane gas, the monitors are not required to be calibrated frequently and maintained, the problems of poor adaptability and long-time reliable work in severe environments are solved, particularly, for environments such as high dust, oil smoke and the like, the traditional point sensor uses a filter screen and a pumping device and the like, the environments such as blockage, pollution and the like easily occur, the remote-measuring type laser methane gas monitoring device does not have the devices, and the remote-measuring type laser methane gas monitoring device is suitable for long-time stable work in severe environments.
In this embodiment, the indicating laser is a laser capable of emitting visible light. For example, the indicating laser emits visible light such as red or green, and the indicating laser is pointed in line with the measuring laser for indicating the direction of the measuring laser. The axes of the indicating laser and the measuring laser are arranged in parallel and are positioned on the same plane, and the directions of the laser emitted by the indicating laser and the measuring laser are the same. Through setting up the instruction laser, aim at the difficult problem when solving traditional laser reflection formula, correlation formula gas sensor installation.
In this embodiment, the circuit board includes a detection receiving circuit 12, a laser driving circuit 11, and a signal processing circuit 16, and the circuits are integrated on one circuit board. The circuit is arranged behind the detector 10, the laser driving circuit 11 is electrically connected with the indicating laser and the measuring laser respectively, and the detection receiving circuit 12 is electrically connected with the detector 10 and the signal processing circuit 16 respectively.
Due to the reasonable layout design of the circuit board, the structure of each part is compact, and the volume is reduced.
Further, the axes of the indicating laser and the measuring laser are arranged in parallel, the axis of the laser receiving optical window 1 is arranged in parallel with the axes of the measuring laser light outlet 2 and the indicating laser light outlet 3, the laser receiving optical window 1 is arranged on a reflection light path of the measuring laser, the detector 10 is arranged behind the laser receiving optical window 1, and the axis of the detector 10 is collinear with the axis of the laser receiving optical window 1.
In this embodiment, the alarm lamp 7 is arranged on the case, and the case includes an alarm lamp driving circuit 13 inside for controlling the on/off of the alarm lamp 7. The alarm lamp is characterized in that a buzzer honeycomb hole is formed in the case, a buzzer 28 is arranged inside the case, and the alarm lamp driving circuit 13 is used for adjusting and controlling the buzzer 28.
When the monitor detects that the gas concentration exceeds the lower detection limit, the monitor performs acousto-optic dual alarm, the centralized monitoring platform and the APP client side also perform synchronous alarm, and the alarm information is notified in a telephone, short message or WeChat mode to prompt a user to process in time. The design of the alarm component can find and troubleshoot dangers in time and meet actual requirements.
In this embodiment, the power supply further includes an AC-DC power supply, a power supply and cable interface is provided on the chassis, and a sealing plug 17 is surrounded outside the interface to prevent electric leakage. The power supply is connected to the telemetry methane leak monitor via a cable 18 and power and cable interface. The display screen 4 and the keys are arranged on the case, and the display screen driving circuit 14 and the key circuit which are connected with the display screen 4 and the keys are arranged in the case. The keys are divided into a function key 6 and a setting key 5, the function key 6 is used for indicating on-off of light and switching functions, and the setting key 5 is used for setting an alarm lower limit.
In this embodiment, the receiving optical lens 9 of the laser receiving optical window 1 is preferably a single-chip optical lens with a large numerical aperture, an aspheric surface and a large photosensitive surface. The optical receiving lens used by the device is small in size and small in focal length, and the image quality is greatly improved compared with that of a traditional spherical lens, so that the size of the whole device is small, the optical receiving efficiency is not affected, and the acting distance and the measuring sensitivity can be guaranteed to be unchanged. That is, compared with the prior art, the volume of the laser methane telemetering device is greatly reduced compared with the prior art on the premise that the acting distance and the measuring sensitivity are not changed.
In this embodiment, the chassis panel design of telemetering type thing networking type laser methane leakage monitor has mounting hole 8, mounting hole 8 is the screw hole, and accessible mounting screw and installing support 20 cooperation are installed and are debugged at the scene.
Furthermore, in order to realize the quick installation of the telemetering type laser methane leakage monitor and the quick adjustment of the horizontal and vertical two-dimensional angles, the device also comprises a fixing device for installing and fixing the monitor, and the fixing device can realize the special arbitrary angle adjustment of the horizontal and vertical two-dimensional angles. The fixing device comprises a horizontal locking device 23 and a mounting bracket 20, the horizontal locking device comprises a boss, a mounting horizontal shaft rod 27 and a horizontal shaft locking mounting screw 26, and the horizontal locking device 23 is detachably connected with the mounting bracket through a nut.
The horizontal locking device 23 is matched with the pressing piece 21 to be aligned with the mounting hole 8 for mounting and debugging, so that the vertical angle adjustment of the monitor is realized, and the horizontal locking device 23 is matched with the mounting horizontal shaft rod 27 to be aligned with the mounting bracket 20 for mounting and debugging, so that the horizontal angle adjustment of the monitor is realized.
Specifically, before the mounting screw 22 of the remote measurement type internet of things type laser methane leakage monitor is not locked, the boss and the pressing piece 21 can slide, so that the vertical angle adjustment of the monitor is realized. Before the horizontal shaft locking mounting screw 26 is locked, the horizontal locking device 23 and the mounting horizontal shaft rod 27 can slide, so that the horizontal angle of the monitor can be adjusted, after the adjustment is completed, the horizontal locking device 23 is detachably connected with the mounting bracket 20 through the fixing nut 25, and the horizontal shaft locking mounting screw 26 is matched, locked and fixed with the locking device locking screw hole 24. The horizontal shaft locking mounting screw 26 and the monitor mounting screw 22 are locked, the mounting angle of the monitor is determined, and the mounting bracket 20 is fixed at the mounting position 19 of a pipeline and the like through screws.
Through setting up special level, the arbitrary angular adjustment structure of perpendicular two-dimensional, simple to operate to installation angle easily adjusts, can satisfy the demand in different places.
In this embodiment, when the monitor works, a multi-cycle accumulation weak methane gas absorption signal extraction and noise reduction technology is adopted. The laser detector 10 receives reflected laser light, the reflected laser light contains rich information, and the interference signals can be transmitted to a subsequent data processing unit, such as a signal processing circuit 16, for data analysis after analog-to-digital sampling conversion, denoising processing and other operations, so as to obtain methane concentration information, and the sensitivity is high.
In this embodiment, the internet of things module 15 integrates an internet of things communication chip and an antenna supporting 4G, NBIOT, and LORA protocols, so as to implement connection with a wireless network. The remote-measuring internet-of-things laser methane leakage monitor periodically uploads real-time gas monitoring information to the cloud end through the internet of things, and when the monitored gas concentration exceeds the alarm lower limit, the gas monitoring information is also sent to the cloud end through the internet of things, and an operator on duty is notified through short messages, WeChat, telephone and other modes.
In practical application, when the telemetering type internet of things type laser methane leakage monitor works, the monitoring distance within 30m in a typical room does not need the cooperation of a reflector, the laser irradiation is adjusted to a common target with a flat non-mirror surface in an installation scene, and the problem of difficult alignment during the installation of the traditional laser reflection type and correlation type gas sensors is solved. For example, the monitoring distance above 50m outside the room can be selected to increase the matching of a reflector or a reflective sticker, and the advantage of wide coverage is realized.
In practical application, the remote measurement type internet of things laser methane leakage monitor supports indoor or outdoor installation, and is installed at a high position indoors, such as a position close to a ceiling, according to the characteristic that natural gas is lighter than air and diffuses upwards after leakage, and is installed above a detected key component and a pipeline when being installed outdoors. When the device is installed, visible laser indicating light is turned on, the laser indicating light is aimed at fixed entity targets such as walls, metals, pipelines and the like, and in order to achieve a longer monitoring distance, for example, more than 50m, a high-reflectivity optical corner reflector array plate and a surface-mounted light reflecting sticker can be additionally installed at the position irradiated by the laser indicating light. The laser methane monitor can be fixed by adjusting the echo signal to meet the specified requirements, and the monitor can calculate the average methane concentration by inputting the current detection path distance through the function key 6 and the setting key 5. After the debugging is finished, the monitor can be set to turn off the screen display and turn off the indicating laser, and the low-power-consumption working state is entered. When the debugging mode is in the working mode, the monitor enters a low power consumption mode, and the monitor can be powered by commercial power and can also work for a long time by an external battery.
The remote measurement type internet of things laser methane leakage monitor can also be installed at an urban gas field station or a gas user side, comprises an urban underground comprehensive pipe gallery, a gas station, an urban public space, industrial users, commercial users and the like, and is used for monitoring methane micro leakage. The system can be powered by direct current or a battery, monitoring gas concentration information, alarm information and a working state are transmitted to a cloud server through the Internet of things, a centralized monitoring platform is also connected with the cloud server to acquire and display a plurality of monitor gas related data, a personal APP client is also connected with the cloud server to acquire and display the multi-monitor gas related data, when the monitor detects that the gas concentration exceeds a detection lower limit, the monitor gives an alarm in a sound-light double mode, the centralized monitoring platform and the APP client give an alarm in a synchronous mode, and the alarm information is notified in a telephone, short message or WeChat mode to prompt a user to process the information in time.
The utility model discloses the advantage of implementing: the remote measurement type Internet of things laser methane leakage monitor has the advantages of being free of poisoning, free of interference, wide in coverage range, free of influence of high-temperature and high-humidity environment and high in reliability by adopting a receiving and sending integrated structure and a remote measurement type laser spectrum gas detection technology. Visual indication laser is arranged, and the problem that the traditional laser reflection type and correlation type gas sensors are difficult to align during installation is solved. The laser receiving optical window is a single-chip aspheric surface with large numerical aperture and a large photosensitive surface optical lens, the gas detection can be completed by irradiating a common target with laser due to high detection sensitivity, the installation is convenient, and the use cost is reduced. When the gas detected by the monitor exceeds the lower detection limit, the alarm and the buzzer are started to realize acousto-optic multiple alarm until the alarm is released. Meanwhile, an internet of things module is added, real-time monitoring information can be sent to the cloud end through the internet of things, and an attendant is notified through short messages, WeChat messages, telephones and the like, so that remote monitoring can be achieved, operation is convenient, and the application range is wide.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A telemetering type Internet of things laser methane leakage monitor comprises a case, wherein a measuring laser light outlet, an indicating laser light outlet and a laser receiving optical window are arranged on the case, and the telemetering type Internet of things laser methane leakage monitor is characterized in that the case comprises a measuring laser, an indicating laser, a detector and a circuit board, the case also comprises an Internet of things module, the circuit board is electrically connected with the indicating laser, the measuring laser and the detector, the measuring laser emits laser to a target through the measuring laser light outlet, the laser emits to the laser receiving optical window after being reflected by the target and converges to the detector through the laser receiving optical window, and a signal output by the detector is processed through the circuit board to obtain methane concentration information.
2. A telemetry methane leak monitor according to claim 1, wherein the circuit board comprises a detection receiving circuit, a laser driving circuit, and a signal processing circuit, the circuits being disposed behind the detector, the laser driving circuit being electrically connected to the indicator laser and the measurement laser, respectively, and the detection receiving circuit being electrically connected to the detector and the signal processing circuit, respectively.
3. A telemetric methane leak monitor according to claim 1, wherein the indicator laser and the measurement laser are arranged side-by-side with their axes, the laser receiving optical window is arranged in parallel with the measurement laser light outlet and the indicator laser light outlet, the laser receiving optical window is arranged in the path of reflected light from the measurement laser, the detector is arranged behind the laser receiving optical window, and the detector is collinear with the laser receiving optical window axis.
4. The telemetry methane leak monitor of claim 1, wherein an alarm lamp is provided on the case, and the case includes an alarm lamp driving circuit for controlling a switch of the alarm lamp.
5. The telemetric methane leak monitor according to claim 4, wherein a buzzer honeycomb hole is provided on the case, a buzzer is provided inside the case, and the alarm lamp driving circuit is used for adjusting and controlling the buzzer.
6. The telemetric methane leak monitor according to claim 1, wherein a display screen and a key are provided on the case, and a display screen driving circuit and a key circuit connected to the display screen and the key are provided inside the case.
7. The telemetry methane leak monitor of claim 1, further comprising an AC-DC power supply, wherein the chassis is provided with a power and cable interface, and the power supply is connected to the telemetry methane leak monitor via the power and cable interface.
8. The telemetry methane leak monitor of claim 1, wherein the internet of things module integrates an internet of things communication chip and an antenna supporting 4G, NBIOT, LORA protocols to enable connection to a wireless network.
9. A telemetric methane leak monitor according to any of claims 1 to 8, wherein the laser receiving optical window is a single piece of large numerical aperture aspheric and large photosurface optical lens.
10. The telemetric methane leak monitor of claim 9, further comprising a fixing device for mounting and fixing the monitor, wherein the fixing device comprises a horizontal locking device, a mounting bracket, and a monitor mounting screw, the horizontal locking device comprises a boss, a mounting horizontal shaft, and a horizontal shaft locking mounting screw, the horizontal locking device is detachably connected with the mounting bracket, and the fixing device is used for realizing any angle adjustment in two dimensions of horizontal and vertical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123376850.6U CN217332146U (en) | 2021-12-29 | 2021-12-29 | Remote measuring type internet of things laser methane leakage monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123376850.6U CN217332146U (en) | 2021-12-29 | 2021-12-29 | Remote measuring type internet of things laser methane leakage monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217332146U true CN217332146U (en) | 2022-08-30 |
Family
ID=82991327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123376850.6U Active CN217332146U (en) | 2021-12-29 | 2021-12-29 | Remote measuring type internet of things laser methane leakage monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217332146U (en) |
-
2021
- 2021-12-29 CN CN202123376850.6U patent/CN217332146U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101283896B1 (en) | A socket connector of incandescent lamp, a fire detector and escape-guide lamp having beacon module for detecting indoor location and system for detecting indoor location using the same | |
| CN114279964A (en) | Laser methane leakage monitor and methane leakage monitoring method | |
| US10739015B2 (en) | Real-time cooking fume concentration monitoring system and range hood applying the same | |
| WO2017035928A1 (en) | Intelligent alarm system and method | |
| US11361650B2 (en) | Wireless leak alarm camera and sensors, and wireless valve, apparatus, system and method thereof | |
| CN217332146U (en) | Remote measuring type internet of things laser methane leakage monitor | |
| CN110243416A (en) | A kind of intelligent photovoltaic array header box monitoring system based on NB-IOT | |
| CN1831888A (en) | Portable apparatus for remote wireless meter recording system and method of remote wireless meter recording | |
| CN109061681A (en) | A kind of geologic shifts monitoring device, method and system | |
| CN210465699U (en) | Multifunctional hazardous gas monitoring device and monitoring and early warning system | |
| CN210015038U (en) | Gas detector with open path | |
| CN110231322B (en) | Online oil spilling pollution monitoring devices | |
| CN208443442U (en) | Atmospheric environment monitoring equipment and system thereof | |
| CN203745379U (en) | Handheld test paper reflectometer | |
| CN213024706U (en) | Internet-of-things independent smoke detection alarm | |
| CN209168346U (en) | A kind of Multifunction safety siren and its alarm system | |
| CN210181755U (en) | Smog electronic alarm based on thing networking | |
| CN208044100U (en) | A kind of enviromental monitoring equipment | |
| CN216350345U (en) | Intelligent Raman spectrum analysis equipment | |
| CN201638329U (en) | Indoor ultrasonic anti-theft alarm device | |
| CN214584094U (en) | Portable tester | |
| CN109612960A (en) | A kind of CH_4 detection device based on NB-IoT with lifting rotating function | |
| CN105867221B (en) | Solar air mass monitor | |
| CN201000424Y (en) | Carbon dioxide analyzer | |
| CN209357228U (en) | A kind of sensing system based on the remote LoRa wireless communication networks of star |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |