Gas detection device

Abstract

A gas detection device comprises a shell, an external connector, a power converter, a control processing board, a networking module, a particle detection module and a temperature and humidity sensor. A control processing board, a networking module, a particle detection module, a temperature and humidity sensor, a power supply converter and an external connector are arranged in a shell to form a thin portable device, and the device is used on an indoor power supply in a plug-and-play manner through the external connector, so that the particle detection module is started to detect suspended particles of gas in an environment; the temperature and humidity sensor is started to detect the temperature and humidity of the environment, detected detection data information is transmitted to the cloud processing device through Internet of Things communication started by the networking module, air quality information is transmitted to the indoor air pollution prevention and treatment system in real time, and the indoor space is promoted to form a clean and safe breathing gas state.

Description

[Technical field]

[0001] This case concerns a gas detection device, specifically an extremely thin gas detection device that can be deployed in an indoor air pollution control system to implement gas detection, transmit air quality information to the system in real time, and promote the formation of a clean and safe gas state in the indoor space. [Background technology]

[0002] Suspended particulate matter refers to solid particles or droplets contained in gas. Due to its very fine particle size, it is easy for it to enter the lungs through the nasal hair in the nasal cavity, thus causing lung inflammation, asthma or cardiovascular disease. If other pollutants are attached to the suspended particulate matter, it will aggravate the harm to the respiratory system. In recent years, the problem of gas pollution has become increasingly serious, especially the concentration data of fine suspended particulate matter (such as PM2.5) is often too high. The monitoring of gas suspended particulate concentration has gradually received attention. However, since the gas will flow unstably with the wind direction and wind volume, and most of the gas quality monitoring stations that detect suspended particulate matter are currently fixed points, it is impossible to confirm the concentration of suspended particulate matter in the surrounding area.

[0003] In addition, modern people are paying more and more attention to the quality of the air around them. For example, carbon monoxide, carbon dioxide, volatile organic compounds (VOC), PM2.5, nitrogen monoxide, sulfur monoxide and other gases, and even the particles contained in the gases, will be exposed in the environment and affect human health, and even endanger life in serious cases. Therefore, the quality of environmental gases has attracted the attention of all countries. How to detect gas quality to avoid and stay away from areas with poor gas quality is a current issue of concern.

[0004] How to confirm the quality of gas? It is feasible to use a gas sensor to detect the surrounding gas. If it can provide detection information in real time to warn people in the environment, so that they can take real-time precautions or escape, and avoid being harmed by the gas in the environment and causing health effects and injuries to the human body, using a gas sensor to detect the surrounding environment can be said to be a very good application.

[0005] Therefore, the ultra-thin gas detection device can be deployed on an indoor air pollution control system, and can be plug-and-play used to detect the gas in the surrounding environment indoors, and transmit air quality information to the system in real time, so as to promote the indoor space to form a clean and safe gas state, which is an important research and development topic of the present invention. [Summary of the invention]

[0006] The main purpose of this case is to provide a gas detection device, which is internally provided with a control processing board, a networking module, a particle detection module, a temperature and humidity sensor, a power converter and an external connector to form a thin and easy-to-carry device. Through the external connector, it can be plugged and played on the indoor power supply, and the particle detection module is used to start the detection of suspended particles (such as PM10, PM2.5, PM1) in the gas environment, and the temperature and humidity sensor is used to start the detection of the temperature and humidity of the environment. The detected detection data information is used to start the Internet of Things (IoT) through the networking module. The data information can be transmitted to the cloud processing device through IoT (Internet of Things) communication to implement gas detection of the indoor air pollution prevention and control system, and the obtained data information can not only be transmitted to the indoor display device for warning or notification, or transmitted to the application (APP) of the mobile device for warning or notification, and the obtained data information is intelligently compared and compared with big data by the cloud processing device, and then the cloud processing device sends a communication instruction to the indoor gas purification exchange and filtering device (such as a purifier, exhaust fan, range hood, fresh air fan, etc.) to implement indoor air pollution removal. In this way, the gas detection device implements gas detection in an indoor air pollution prevention and control system, and transmits air quality information to the system in real time, so as to form a clean and safe gas state in the indoor space.

[0007] To achieve the above-mentioned purpose, a broad implementation form of the present case is a gas detection device, comprising: a shell, comprising an upper shell and a lower shell, the side edge of the lower shell is provided with a plurality of ventilation holes, the lower edge of the lower shell is provided with a lug hole, and the bottom surface of the lower shell is provided with a recessed groove; an external connector, pivotally connected to the lower shell, and can be folded in the recessed groove to be hidden and not protruding, and rotated out of the recessed groove to be exposed to the lower shell to connect to an external power source; a power converter, electrically connected to the external connector, converting the external power source into the required DC power output; a control processing board, connected to the power converter to provide a startup power supply, and process and receive multiple data information, and convert the data information into a communication information; a networking module, arranged on the upper shell side. and is packaged into an integration with the control processing board, receives the communication information processed by the control processing board and outputs it externally; a particle detection module is arranged on the other side of the bottom surface of the lower shell and is adjacent to the networking module packaged on the other side of the control processing board, and is connected to the control processing board through a first soft board to form an electrical connection to start the detection of gas and obtain the data information of the gas, and the data information is transmitted to the control processing board to be converted into the communication information, and is transmitted externally through the networking module; and a temperature and humidity sensor is arranged on the side of the lower shell, connected to the control processing board through a second soft board to form an electrical connection to start the detection of a temperature and a humidity, and obtain the data information of the temperature and the humidity, and the data information is transmitted to the control processing board to be converted into the communication information, and is transmitted externally through the networking module.

Brief Description of the Drawings

[0008] Figure 1A It is a three-dimensional schematic diagram of the gas detection device in this case. Figure 1B This is a schematic diagram of the external connector of the gas detection device in this case in the expanded use state. Figure 1C This is a schematic diagram of the external connector of the gas detection device in the folded state. Figure 2A This is a three-dimensional schematic diagram of the relevant internal components of the gas detection device in this case. Figure 2B This is a side view of the relevant components inside the particle detection module of this case. Figure 3A Shown is a three-dimensional schematic diagram of the particle detection module of this case. Figure 3B Shown is a three-dimensional schematic diagram of the particle detection module of this case from another perspective. Figure 3C Shown is an exploded three-dimensional schematic diagram of the particle detection module in this case. Figure 4A Shown is a three-dimensional schematic diagram of the base of the particle detection module in this case. Figure 4B Shown is a three-dimensional schematic diagram of the base of the particle detection module of this case from another angle. Figure 5 The figure is a three-dimensional schematic diagram of the base of the particle detection module of the present invention accommodating the laser component and the particle sensor. Fig. 6A The figure shows an exploded three-dimensional schematic diagram of the piezoelectric actuator of the particle detection module of the present invention when combined with the base. Figure 6B The figure is a three-dimensional schematic diagram of the piezoelectric actuator of the particle detection module of the present invention combined with the base. Fig. 7A Shown is an exploded three-dimensional schematic diagram of the piezoelectric actuator of the particle detection module of this case. Figure 7B Shown is a three-dimensional schematic diagram of the piezoelectric actuator of the particle detection module of the present invention, exploded from another angle. Fig. 8A It is a cross-sectional schematic diagram showing the piezoelectric actuator of the particle detection module of the present invention being combined with the air guide component bearing area. Figure 8B and Figure 8C for Fig. 8A Schematic diagram of the piezoelectric actuator in action. 9A to 9C Schematic diagram of the gas path of the particle detection module. Fig.10 Shown is a schematic diagram of the light beam emission path of the laser component of the particle detection module in this case.

Explanation of symbols

[0009] 1: Shell 11: Upper shell 12: Lower shell 121: Recessed groove 122: Ventilation hole 123: Lug holes 2: External connector 3: Power Converter 4: Control processing board 5: Networking module 6: Particle detection module 61: Pedestal 611: First surface 612: Second surface 613: Laser setting area 614: Intake groove 614a: Air Inlet 614b: Light-transmitting window 615: Gas guide component bearing area 615a: Through hole 615b: Positioning bump 616: Vent groove 616a: Air outlet 616b: First interval 616c: Second interval 617: Void 618: Light Trap Area 618a: Light trapping structure 62: Piezoelectric actuator 621: Jet Hole Sheet 621a: Suspended sheet 621b: Hollow holes 622: Cavity frame 623: Actuator 623a: Piezoelectric carrier 623b: Adjusting the resonance plate 623c: Piezoelectric plate 623d: Piezoelectric pin 624: Insulation frame 625: Conductive frame 625a: Conductive pin 625b: Conductive electrode 626: Resonance Chamber 627: Airflow Chamber 63: Driver circuit board 64: Laser components 65: Particle Sensor 66: Outer cover 661: Side panels 661a: Air intake frame 661b: air outlet frame 67: Volatile organic compound sensor 7: Temperature and humidity sensor 8: Soft board 9: Switch D: Light trap distance [Specific implementation method]

[0010] The embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various variations in different aspects without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.

[0011] See also Figure 1A , Figure 1B , Figure 2A as well as Figure 2B As shown, the present case provides a gas detection device including a shell 1, an external connector 2, a power converter 3, a control processing board 4, a networking module 5, a particle detection module 6, and a temperature and humidity sensor 7.

[0012] The housing 1 includes an upper housing 11 and a lower housing 12, and a power converter 3, a control processing board 4, a networking module 5, a particle detection module 6, and a temperature and humidity sensor 7 are disposed between the interior of the upper housing 11 and the lower housing 12, and the power converter 3 and the networking module 5 are integrated and packaged on the control processing board 4 to form an integrated circuit, wherein the networking module 5 is disposed on the inner edge surface of the upper housing 11, and the external connector 2 is disposed and pivotally connected to the lower housing 12, and when the external connector 2 is not plugged in, it can be folded into a recessed groove 121 formed on the bottom surface of the lower housing 12 and hidden without protruding ( Figure 1C As shown), when plugging in the power supply, the recessed groove 121 can be rotated out to expose the lower housing 12 to connect the power supply ( Figure 1BAs shown). The particle detection module 6 is arranged on the other side of the bottom surface of the lower shell 12 and positioned and the adjacent networking module 5 is packaged on the other side of the control processing board 4. The temperature and humidity sensor 7 is arranged on the side of the lower shell 12. It is arranged on the side of the lower shell 12, which refers to any position on the other side of the bottom surface of the lower shell 12, for example: the side edge or lower edge of the inner edge surface of the lower shell 12. In one embodiment, the temperature and humidity sensor 7 is arranged on the side edge of the inner edge surface of the lower shell 12, adjacent to the particle detection module 6 and a plurality of vents 122. In addition, a plurality of vents 122 are provided on the side edge of the lower shell 12, which can be used for gas to be introduced into or discharged from the inside of the shell 1, and a lug hole 123 is provided on the lower edge of the lower shell 12, which can be used for the external connector 2 to be inserted into a power supply, and locked to a socket by using a locking piece (not shown), so that the entire gas detection device is positioned so that it is not easy to be touched and jumped off. It is worth noting that the external connector 2 can be one of a power connector, a USB port, a mini USB port, a Micro USB port and a USB Type C port. Figure 1B The external connector 2 shown is a power connector.

[0013] again, Figure 2A and Figure 2B As shown, the external connector 2 is connected to an external power source, providing power to the power converter 3 to convert it into a direct current (DC) power supply and output it to the control processing board 4, and providing the required power for the networking module 5, the particle detection module 6, and the temperature and humidity sensor 7 to start, such as Figure 2B As shown, a person skilled in the art can easily understand that the flexible board is a transmission connection line required for the electrical connection of electronic components. For the sake of simplicity, the following flexible board 8 can be respectively the first flexible board, the second flexible board, etc. The particle detection module 6 is electrically connected to the control processing board 4 through the first flexible board 8, and the temperature and humidity sensor 7 is electrically connected to the control processing board 4 through the second flexible board 8. In addition, the control processing board 4 is also connected to a switch 9, which is exposed outside the upper shell 11, allowing the user to press it to allow the control processing board 4 to start the power supply and processing of the control networking module 5, the particle detection module 6, and the temperature and humidity sensor 7. The networking module 5 can start the Internet of Things (IOT) communication, the particle detection module 6 can start the detection of suspended particles (for example: PM10, PM2.5, PM1) in the gas environment, and the temperature and humidity sensor 7 can start the detection of the temperature and humidity of the environment. It is worth noting that the networking module 5 is a WIFI communication module. In this embodiment, the networking module 5 is a cloud computing service (such as Amazon Web Services, AWS) wireless network communication module, and the networking module 5 is arranged on the side of the upper shell 11, directly exposed to the outside of the entire gas detection device, and can easily receive or send communication signals, and is less susceptible to interference in communication signals caused by shielding by the control processing board 4.

[0014] Please continue reading FIG. 3A to FIG. 7B As shown, the particle detection module 6 comprises a base 61, a piezoelectric actuator 62, a driving circuit board 63, a laser assembly 64, a particle sensor 65 and an outer cover 66; wherein the driving circuit board 63 is sealed and attached to the second surface 612 of the base 61, the laser assembly 64 is disposed on the driving circuit board 63 and is electrically connected to the driving circuit board 63, the particle sensor 65 is also disposed on the driving circuit board 63 and is electrically connected to the driving circuit board 63, and the outer cover 66 covers the base 61 and is attached and sealed on the first surface 611 of the base 61, and the outer cover 66 has a side plate 661, and the side plate 661 has an air inlet frame 661a and an air outlet frame 661b. When the particle detection module 6 is set in the lower shell 12 of the shell 1, the air inlet frame 661a can introduce the gas introduced by the vent 122, and the air outlet frame 661b can discharge the gas discharged from the vent 122.

[0015] Another example Figure 4A and Figure 4B As shown, the base 61 has a first surface 611, a second surface 612, a laser setting area 613, an air inlet groove 614, an air guide component bearing area 615 and an air outlet groove 616. The first surface 611 and the second surface 612 are two surfaces arranged opposite to each other. The laser setting area 613 is hollowed out from the first surface 611 toward the second surface 612. The air inlet groove 614 is recessed from the second surface 612 and is adjacent to the laser setting area 613. The air inlet groove 614 is provided with an air inlet port 614a, which is connected to the outside of the base 61 and corresponds to the air inlet frame port 661a of the outer cover 66, and a light-transmitting window 614b is passed through the two side walls and is connected to the laser setting area 613. Therefore, the first surface 611 of the base 61 is attached and covered by the outer cover 66, and the second surface 612 is attached and covered by the driving circuit board 63, so that the air inlet groove 614 defines an air inlet path.

[0016] The air guide component bearing area 615 is formed by a depression of the second surface 612, and is connected to the air inlet groove 614, and has a through hole 615a on the bottom surface. The air outlet groove 616 is provided with an air outlet 616a, and the air outlet 616a is arranged corresponding to the air outlet frame opening 661b of the outer cover 66. The air outlet groove 616 includes a first section 616b formed by a depression of the vertical projection area of ​​the first surface 611 corresponding to the air guide component bearing area 615, and an area extending from the vertical projection area of ​​the non-air guide component bearing area 615, and a second section 616c formed by hollowing out from the first surface 611 to the second surface 612. , wherein the first section 616b is connected to the second section 616c to form a step difference, and the first section 616b of the air outlet groove 616 is connected to the through hole 615a of the air guide component supporting area 615, and the second section 616c of the air outlet groove 616 is connected to the air outlet 616a; therefore, when the first surface 611 of the base 61 is attached and covered by the outer cover 66 and the second surface 612 is attached and covered by the driving circuit board 63, the air outlet groove 616 defines an air outlet path.

[0017] Again. Figure 5 As shown, the laser assembly 64 and the particle sensor 65 are both disposed on the driving circuit board 63 and in the base 61. In order to clearly illustrate the positions of the laser assembly 64 and the particle sensor 65 and the base 61, Figure 5 The driving circuit board 63 is omitted for clarity; Figure 5 and Figure 3C The laser component 64 will be accommodated in the laser setting area 613 of the base 61, and the particle sensor 65 will be accommodated in the air intake groove 614 of the base 61 and aligned with the laser component 64. In addition, the laser component 64 corresponds to the light-transmitting window 614b, so that the laser light emitted by the laser component 64 can pass through, so that the laser light is irradiated into the air intake groove 614, and the path of the light beam emitted by the laser component 64 passes through the light-transmitting window 614b and forms an orthogonal direction with the air intake groove 614.

[0018] The projection light beam emitted by the laser assembly 64 enters the air inlet groove 614 through the light-transmitting window 614b, and irradiates the suspended particles contained in the gas in the air inlet groove 614. When the light beam contacts the suspended particles, it will scatter and generate projection light spots. The particle sensor 65 receives the projection light spots generated by the scattering and calculates to obtain relevant information about the particle size and concentration of the suspended particles contained in the gas. The particle sensor 65 is a PM2.5 sensor.

[0019] Another example Fig. 6A and Figure 6BAs shown, the above-mentioned piezoelectric actuator 62 is accommodated in the air guide component carrying area 615 of the base 61. The air guide component carrying area 615 is a square, and a positioning protrusion 615b is respectively provided at its four corners. The piezoelectric actuator 62 is set in the air guide component carrying area 615 through the four positioning protrusions 615b. In addition, the air guide component carrying area 615 is communicated with the air inlet groove 614. When the piezoelectric actuator 62 is actuated, the gas in the air inlet groove 614 is sucked into the piezoelectric actuator 62, and the gas passes through the through hole 615a of the air guide component carrying area 615 and enters the air outlet groove 616.

[0020] Also see Fig. 7A and Figure 7B As shown, the piezoelectric actuator 62 comprises: an air jet plate 621 , a cavity frame 622 , an actuator 623 , an insulating frame 624 and a conductive frame 625 .

[0021] The above-mentioned air jet hole sheet 621 is made of a flexible material and has a suspension sheet 621a and a hollow hole 621b. The suspension sheet 621a is a sheet-like structure that can be bent and vibrated. Its shape and size roughly correspond to the inner edge of the air guide component bearing area 615, but it is not limited to this. The shape of the suspension sheet 621a can also be one of square, round, elliptical, triangular and polygonal. The hollow hole 621b runs through the center of the suspension sheet 621a to allow gas to flow.

[0022] The above-mentioned cavity frame 622 is stacked on the jet hole sheet 621, and its appearance corresponds to the jet hole sheet 621. The actuator 623 is stacked on the cavity frame 622, and defines a resonance chamber 626 between the cavity frame 622 and the suspension sheet 621a. The insulating frame 624 is stacked on the actuator 623, and its appearance is similar to the cavity frame 622. The conductive frame 625 is stacked on the insulating frame 624, and its appearance is similar to the insulating frame 624. The conductive frame 625 has a conductive pin 625a and a conductive electrode 625b. The conductive pin 625a extends outward from the outer edge of the conductive frame 625, and the conductive electrode 625b extends inward from the inner edge of the conductive frame 625. In addition, the actuator 623 further includes a piezoelectric carrier 623a, an adjustment resonance plate 623b and a piezoelectric plate 623c. The piezoelectric carrier 623a is supported and stacked on the cavity frame 622, the adjustment resonance plate 623b is supported and stacked on the piezoelectric carrier 623a, and the piezoelectric plate 623c is supported and stacked on the adjustment resonance plate 623b. The adjustment resonance plate 623b and the piezoelectric plate 623c are accommodated in the insulating frame 624 and are electrically connected to the piezoelectric plate 623c by the conductive electrode 625b of the conductive frame 625. Among them, the piezoelectric carrier 623a and the adjustment resonance plate 623b are made of conductive materials. The piezoelectric carrier 623a has a piezoelectric pin 623d, and the piezoelectric pin 623d is connected to the conductive pin 625. a is connected to a driving circuit (not shown) on the driving circuit board 63 to receive a driving signal (driving frequency and driving voltage). The driving signal is formed into a loop by the piezoelectric pin 623d, the piezoelectric carrier 623a, the adjustment resonance plate 623b, the piezoelectric plate 623c, the conductive electrode 625b, the conductive frame 625, and the conductive pin 625a. The insulating frame 624 blocks the conductive frame 625 and the actuator 623 to avoid a short circuit, so that the driving signal can be transmitted to the piezoelectric plate 623c. After receiving the driving signal (driving frequency and driving voltage), the piezoelectric plate 623c is deformed due to the piezoelectric effect to further drive the piezoelectric carrier 623a and the adjustment resonance plate 623b to produce reciprocating bending vibrations.

[0023] As described above, the adjustment resonance plate 623b is located between the piezoelectric plate 623c and the piezoelectric carrier plate 623a, and serves as a buffer between the two, and can adjust the vibration frequency of the piezoelectric carrier plate 623a. Basically, the thickness of the adjustment resonance plate 623b is greater than the thickness of the piezoelectric carrier plate 623a, and the thickness of the adjustment resonance plate 623b can be changed, thereby adjusting the vibration frequency of the actuator 623.

[0024] Please also see Fig. 8A , Figure 8BAs shown, the piezoelectric actuator 62 is accommodated on the positioning protrusion 615b of the air guide component supporting area 615 of the base 61, so that a plurality of gaps 617 are defined between the suspension sheet 621a and the positioning protrusion 615b of the air guide component supporting area 615 and between the suspension sheet 621a and the side of the air guide component supporting area 615 for gas circulation.

[0025] Please see again Fig. 8A As shown, the jet hole sheet 621, the cavity frame 622, the actuator 623, the insulating frame 624 and the conductive frame 625 are stacked in sequence and disposed in the air guide component supporting area 615. An airflow chamber 627 is formed between the jet hole sheet 621 and the bottom surface (not shown) of the air guide component supporting area 615. The airflow chamber 627 is connected to the resonance chamber 626 between the actuator 623, the cavity frame 622 and the suspension sheet 621a through the hollow hole 621b of the jet hole sheet 621. By controlling the vibration frequency of the gas in the resonance chamber 626 to make it close to the vibration frequency of the suspension sheet 621a, the resonance chamber 626 and the suspension sheet 621a can generate a Helmholtz resonance effect, so as to improve the gas transmission efficiency.

[0026] See also Figure 8B As shown, when the piezoelectric plate 623c moves away from the bottom surface of the air guide component bearing area 615, it drives the suspension plate 621a of the jet hole plate 621 to move away from the bottom surface of the air guide component bearing area 615, so that the volume of the airflow chamber 627 expands rapidly, and its internal pressure drops to form a negative pressure, attracting the gas outside the piezoelectric actuator 62 to flow in through the multiple gaps 617 and enter the resonance chamber 626 through the hollow hole 621b, so that the air pressure in the resonance chamber 626 increases and a pressure gradient is generated. Figure 8C As shown, when the piezoelectric plate 623c drives the suspension plate 621a of the jet hole plate 621 to move toward the bottom surface of the air guide component bearing area 615, the gas in the resonance chamber 626 flows out quickly through the hollow hole 621b, squeezing the gas in the airflow chamber 627, and causing the converged gas to be ejected quickly and in large quantities in an ideal gas state close to Bernoulli's law. According to the principle of inertia, the internal air pressure of the resonance chamber 626 after exhaust is lower than the equilibrium air pressure, which will guide the gas to enter the resonance chamber 626 again. Therefore, through repeated Figure 8B and Figure 8C After the action, the piezoelectric plate 623c is made to vibrate reciprocatingly, and the vibration frequency of the gas in the resonance chamber 626 is controlled to be close to the vibration frequency of the piezoelectric plate 623c, so as to produce the Helmholtz resonance effect, so as to realize the high-speed and large-scale transmission of the gas.

[0027] Again, if 9A to 9CAs shown, the gas enters from the air inlet frame 661a of the outer cover 66, enters the air inlet groove 614 of the base 61 through the air inlet 614a, and flows to the position of the particle sensor 65. Fig. 9B As shown, the piezoelectric actuator 62 is continuously driven to absorb the gas in the air intake path, so that the external gas is quickly introduced and stably circulated, and passes through the top of the particle sensor 65. At this time, the laser component 64 emits a projection light beam through the light-transmitting window 614b into the air intake groove 614, irradiating the air intake groove 614 through the suspended particles contained in the gas above the particle sensor 65. When the light beam contacts the suspended particles, it will scatter and generate a projection light spot. The particle sensor 65 receives the projection light spot generated by the scattering and calculates to obtain relevant information on the particle size and concentration of the suspended particles contained in the gas. The gas above the particle sensor 65 is also continuously driven and transmitted by the piezoelectric actuator 62 and introduced into the through hole 615a of the air guide component bearing area 615, and enters the first interval 616b of the air outlet groove 616. Finally, as shown in FIG. Fig. 9C As shown, after the gas enters the first section 616b of the gas outlet groove 616, the piezoelectric actuator 62 will continuously deliver the gas into the first section 616b, and the gas in the first section 616b will be pushed to the second section 616c, and finally discharged outward through the gas outlet 616a and the gas outlet frame opening 661b.

[0028] Of note, see Fig.10 As shown, the base 61 further includes a light trap area 618, which is hollowed out from the first surface 611 to the second surface 612 and corresponds to the laser setting area 613. The light trap area 618 passes through the light-transmitting window 614b so that the light beam emitted by the laser component 64 can be projected therein. The light trap area 618 is provided with a light trap structure 618a with an oblique cone surface. The light trap structure 618a corresponds to the path of the light beam emitted by the laser component 64. In addition, the light trap structure 618a enables the laser component 64 to The emitted projection light beam is reflected by the oblique cone structure into the light trap area 618, so as to prevent the light beam from being reflected to the position of the particle sensor 65, and a light trap distance D is maintained between the position of the projection light beam received by the light trap structure 618a and the light-transmitting window 614b. The light trap distance D needs to be greater than 3 mm. When the light trap distance D is less than 3 mm, the projection light beam projected on the light trap structure 618a will be directly reflected back to the position of the particle sensor 65 due to excessive stray light after being reflected, causing distortion of the detection accuracy.

[0029] Please continue reading Fig.10 and Figure 3CAs shown, the particle detection module 6 of the present case can not only detect particles in the gas, but also further detect the characteristics of the introduced gas, such as formaldehyde, ammonia, carbon monoxide, carbon dioxide, oxygen, ozone, etc. Therefore, the particle detection module 6 of the present case further provides a volatile organic compound sensor 67, which is positioned on the driving circuit board 63 and electrically connected thereto, and is accommodated in the gas outlet groove 616 to detect the gas derived from the gas outlet path, so as to detect the concentration or characteristics of the volatile organic compounds contained in the gas in the gas outlet path. Alternatively, the above-mentioned volatile organic compound sensor 67 is positioned on the driving circuit board 63 and electrically connected thereto, and the volatile organic compound sensor 67 is accommodated in the light trap area 618, and the concentration or characteristics of the volatile organic compounds contained in the gas introduced into the light trap area 618 through the gas inlet path of the gas inlet groove 614 and through the light-transmitting window 614b are detected.

[0030] In summary, the gas detection device provided in this case uses the particle detection module to start the detection of suspended particles (such as PM10, PM2.5, PM1) in the gas in the detection environment, and the temperature and humidity sensor starts the detection of the temperature and humidity of the environment. The data information of the detected suspended particles and the data information of the temperature and humidity can be transmitted to the control processing board for processing to form a communication signal, and then the Internet of Things (IOT) communication is started through the networking module to be transmitted to the cloud processing device to implement the gas detection of the indoor air pollution prevention and control system. Moreover, the obtained data information can not only be used for warning or notification on the indoor display device, but also for warning or notification on the application (APP) of the mobile device. In addition, the obtained data information is intelligently compared and compared with big data by the cloud processing device, and then the cloud processing device sends a communication instruction to the indoor gas purification exchange and filtering device (such as a purifier, exhaust fan, range hood, fresh air fan, etc.) to implement indoor air pollution removal. In this way, the gas detection device is implemented in an indoor air pollution prevention and control system for gas detection, and the air quality information is transmitted to the system in real time, so as to promote the indoor space to form a clean and safe gas state, which is highly industrially applicable and progressive.

Claims

1. A gas detection device, characterized in that: Include: A shell, comprising an upper shell and a lower shell, wherein a plurality of vent holes are provided on the side edge of the lower shell, a lug hole is provided on the lower edge of the lower shell, and a concave groove is formed on the bottom surface of the lower shell; An external connector is pivotally connected to the lower housing and can be folded into the recessed slot to be hidden and not protruding, and can be rotated out of the recessed slot to be exposed on the lower housing to connect to an external power source; a power converter, electrically connected to the external connector, to convert the external power into the required DC power output; A control processing board connected to the power converter to provide a startup power supply, and to process and receive a plurality of data information and convert the data information into a communication information; A networking module is disposed on the upper housing side and is packaged with the control processing board to form an integrated circuit, receiving the communication information processed by the control processing board and outputting it externally; a particle detection module, which is disposed on the other side of the bottom surface of the lower housing and is adjacent to the networking module and is packaged on the other side of the control processing board, and is connected to the control processing board through a first flexible board to form an electrical connection to start detecting gas and obtain the data information of the gas, and the data information is transmitted to the control processing board to be converted into the communication information, and is transmitted to the outside through the networking module; and A temperature and humidity sensor is arranged on the side of the lower shell, and is connected to the control processing board through a second flexible board to form an electrical connection to start detecting a temperature and a humidity, and obtain the data information of the temperature and the humidity. The data information is transmitted to the control processing board to be converted into the communication information, and is transmitted to the outside through the networking module.

2. The gas detection device according to claim 1, characterized in that: The external connector is one of a power connector, a USB port, a miniUSB port, a Micro USB port and a USB Type C port.

3. The gas detection device according to claim 1, characterized in that: When the external connector is plugged into an external power source, a locking piece is used to penetrate the lug hole and lock onto a socket, thereby positioning the entire gas detection device.

4. The gas detection device according to claim 1, characterized in that: The networking module is a cloud computing service wireless network communication module, and the networking module is arranged on the upper shell side, directly exposed to the outside of the entire gas detection device, and is easy to receive or send communication signals and is not easily blocked by the control processing board. Shielding causes interference to communication signals.

5. The gas detection device according to claim 1, characterized in that: The particle detection module detects the gas introduced through the vent hole of the housing, and the particle detection module comprises: A base having: a first surface; a second surface, opposite to the first surface; A laser setting area is formed by hollowing out from the first surface toward the second surface; An air inlet groove is formed by being recessed from the second surface and is adjacent to the laser setting area. The air inlet groove is provided with an air inlet port connected to the outside of the base, and a light-transmitting window is passed through the two side walls and is connected to the laser setting area; An air guide component bearing area is formed by being recessed from the second surface and connected to the air inlet groove, and has a through hole penetrating through the bottom surface; and An air outlet groove is recessed from the first surface corresponding to the bottom surface of the air guide component bearing area, and is hollowed out from the first surface toward the second surface in the area of ​​the first surface not corresponding to the air guide component bearing area, is communicated with the through hole, and is provided with an air outlet, which is communicated with the outside of the base; A piezoelectric actuator is accommodated in the air guide component bearing area; A driving circuit board, the cover is attached to the second surface of the base; A laser assembly is positioned on the driving circuit board and electrically connected thereto, and is correspondingly accommodated in the laser setting area, and a light beam path emitted by the laser assembly passes through the light-transmitting window and forms an orthogonal direction with the air inlet groove; a particle sensor, positioned on the driving circuit board and electrically connected thereto, and correspondingly disposed at a position in a direction orthogonal to the air inlet groove and the path of the light beam projected by the laser assembly, so as to detect particles passing through the air inlet groove and irradiated by the light beam projected by the laser assembly; as well as An outer cover, covering the first surface of the base, and having a side plate, the side plate is respectively provided with an air inlet frame opening and an air outlet frame opening at positions corresponding to the air inlet and the air outlet of the base; The outer cover is covered on the first surface of the base, and the driving circuit board is sealed on the second surface, so that the air inlet groove defines an air inlet path, and the air outlet groove defines an air outlet path, so that the piezoelectric actuator accelerates and guides the external gas from the air inlet frame into the air inlet path defined by the air inlet groove, and passes through the particle sensor to detect the particle concentration in the gas, and the gas is guided through the piezoelectric actuator, The air is discharged from the through hole into the outlet path defined by the outlet groove, and finally discharged from the outlet frame to the vent hole.

6. The gas detection device according to claim 5, characterized in that: The four corners of the air guide component bearing area are respectively provided with a positioning protrusion for the piezoelectric actuator to be embedded and positioned.

7. The gas detection device according to claim 5, characterized in that: The base further comprises a light trap area which is hollowed out from the first surface toward the second surface and corresponds to the laser setting area. The light trap area is provided with a light trap structure with an oblique cone surface which is arranged corresponding to the beam path.

8. The gas detection device according to claim 7, characterized in that: The position of the projection light source received by the light trap structure maintains a light trap distance from the light-transmitting window.

9. The gas detection device according to claim 8, characterized in that: The light trap distance is greater than 3 mm.

10. The gas detection device according to claim 5, characterized in that: The particle sensor is a PM2.5 sensor.

11. The gas detection device according to claim 6, characterized in that: The piezoelectric actuator comprises: A jet hole sheet, comprising a suspension sheet and a hollow hole, the suspension sheet can be bent and vibrated, the hollow hole is formed at the center of the suspension sheet, and the piezoelectric actuator is accommodated on the positioning protrusion of the air guide component bearing area of ​​the base, so that an air flow chamber is formed between the bottom of the jet hole sheet, and a plurality of gaps are defined between the suspension sheet and the positioning protrusion of the air guide component bearing area and between the suspension sheet and the side of the air guide component bearing area, so that gas can flow through the gaps; A cavity frame, supported and stacked on the suspension sheet; An actuator is supported and stacked on the cavity frame to receive voltage and generate reciprocating bending vibration; An insulating frame, supported and stacked on the actuating body; as well as A conductive frame, the support stack is disposed on the insulating frame; A resonance chamber is formed between the actuator, the cavity frame and the suspension sheet. The actuator is driven to drive the jet hole sheet to resonate, so that the suspension sheet of the jet hole sheet produces reciprocating vibration displacement, causing the gas to pass through the gap into the airflow chamber and then be discharged, thereby realizing the transmission flow of the gas.

12. The gas detection device according to claim 11, characterized in that: The actuator comprises: A piezoelectric carrier plate is supported and stacked on the cavity frame; an adjustment resonance plate, supported and stacked on the piezoelectric carrier; and A piezoelectric plate is supported and stacked on the adjustment resonance plate to receive voltage to drive the piezoelectric carrier plate and the adjustment resonance plate to generate reciprocating bending vibration.

13. The gas detection device according to claim 7, characterized in that: The particle detection module further includes a volatile organic compound sensor.

14. The gas detection device according to claim 13, characterized in that: The volatile organic compound sensor is positioned on the driving circuit board and electrically connected thereto, and is accommodated in the gas outlet groove to detect a gas derived from the gas outlet path.

15. The gas detection device according to claim 13, characterized in that: The volatile organic compound sensor is positioned on the driving circuit board and electrically connected thereto, and is accommodated in the light trap area to detect a gas introduced into the light trap area through the air intake path of the air intake groove and the light-transmitting window.

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