Air detection system

Abstract

An air detection system includes an intelligent device and an Internet of Things processing device. The intelligent device includes an air inlet, an air outlet, a control module and a gas detection module. A gas flow channel is provided between the air outlet and the air inlet. The control module is arranged in the intelligent device, and has a processor and a transmission unit. The gas detection module is arranged in the gas flow channel and is electrically connected to the control module, and includes a piezoelectric actuator and at least one sensor. The piezoelectric actuator guides the gas into the gas flow channel from the air inlet and then discharged from the air outlet. The sensor detects the introduced gas to obtain gas information and transmits the gas information to the control module. The Internet of Things processing device is connected to the transmission unit of the intelligent device to receive the gas information transmitted by the intelligent device.

Description

Technical Field

[0001] This case is about an air detection system, and more particularly, about an air detection system that combines a smart device with a gas detection module and then connects it to an Internet of Things processing device. Background Art

[0002] As people in China pay more attention to air pollution, how to confirm the quality of gas is feasible by using a gas sensor to monitor the surrounding gas. If it can provide monitoring information in real time to warn people in the environment, so that they can take immediate precautions or escape, and avoid exposure to gas in the environment that may affect and harm human health, using gas sensors to monitor the surrounding environment can be said to be a very good application. How to combine smart devices and air quality detection devices and connect them to the Internet of Things so that users can not only confirm their own body information in real time, but also monitor air quality in real time is the main topic of this case. Summary of the invention

[0003] The main purpose of this case is to provide an air detection system that uses a smart device combined with a gas detection module to monitor the air quality of the user's environment at any time, allowing the user to obtain the status of the ambient air in real time.

[0004] A general implementation of the present case is an air detection system, which includes at least one smart device and an Internet of Things processing device. At least one smart device includes at least one air inlet, at least one air outlet, a control module and a gas detection module. A gas flow channel is provided between the air outlet and the air inlet. The control module is arranged in the smart device, and has a processor and a transmission unit. The gas detection module is arranged in the gas flow channel and is electrically connected to the control module, and includes a piezoelectric actuator and at least one sensor. The piezoelectric actuator guides the gas outside the smart device into the gas flow channel from the air inlet and then discharged from the air outlet, and the sensor detects the introduced gas to obtain gas information and transmits the gas information to the control module. The Internet of Things processing device is connected to the transmission unit of the smart device to receive the gas information transmitted by the smart device. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] Figure 1 This is a schematic diagram of the air detection system in this case.

[0006] Figure 2A This is a three-dimensional schematic diagram of the appearance of the gas detection module in this case.

[0007] Figure 2B This is a three-dimensional schematic diagram of the appearance of the gas detection module in this case from another angle.

[0008] Figure 2C This is an exploded three-dimensional schematic diagram of the gas detection module in this case.

[0009] Figure 3A This is a three-dimensional schematic diagram of the base of the gas detection module in this case.

[0010] Figure 3B This is a three-dimensional schematic diagram of the base of the gas detection module in this case from another angle.

[0011] Figure 4 This is a three-dimensional schematic diagram of the base of the gas detection module in this case, which houses the laser component and the particle sensor.

[0012] Figure 5A This is a schematic diagram of an exploded three-dimensional diagram of the piezoelectric actuator and base of the gas detection module in this case.

[0013] Figure 5B It is a three-dimensional schematic diagram of the piezoelectric actuator combined with the base of the gas detection module in this case.

[0014] Fig. 6A This is a schematic diagram of an exploded three-dimensional view of the piezoelectric actuator of the gas detection module in this case.

[0015] Figure 6B This is a three-dimensional schematic diagram of the piezoelectric actuator of the gas detection module in this case, which is exploded from another angle.

[0016] Fig. 7A It is a cross-sectional schematic diagram of the piezoelectric actuator of the gas detection module of the present invention combined with the bearing area of ​​the gas guide component.

[0017] Figure 7B and Figure 7C for Fig. 7A Schematic diagram of the piezoelectric actuator in action.

[0018] FIG. 8A to FIG. 8C Schematic diagram of the gas path of the gas detection module.

[0019] Fig. 9 Schematic diagram of the light beam emission path of the laser component of the gas detection module in this case.

[0020] Description of Reference Numerals

[0021] 100: Air detection system

[0022] 1: Smart devices

[0023] 1a: Air Inlet

[0024] 1b: Air outlet

[0025] 1c: Gas flow channel

[0026] 12: Control module

[0027] 121: Processor

[0028] 122: Transmission unit

[0029] 13: Gas detection module

[0030] 131: Base

[0031] 1311: First Surface

[0032] 1312: Second Surface

[0033] 1313: Laser setting area

[0034] 1314: Intake groove

[0035] 1314a: Air intake

[0036] 1314b: Light-transmitting window

[0037] 1315: Gas guide component bearing area

[0038] 1315a: Ventilation hole

[0039] 1315b: Positioning bump

[0040] 1315c: Inner edge

[0041] 1315d: Bottom surface

[0042] 1316: Vent groove

[0043] 1316a: Air outlet

[0044] 1316b: First interval

[0045] 1316c: Second interval

[0046] 1317: Light Trap Area

[0047] 1317a: Light trapping structure

[0048] 132: Piezoelectric actuator

[0049] 1321: Jet Hole Sheet

[0050] 1321a: Suspended sheet

[0051] 1321b: Hollow holes

[0052] 1321c: Void

[0053] 1322: Cavity frame

[0054] 1323: Actuator

[0055] 1323a: Piezoelectric carrier

[0056] 1323b: Adjusting the resonance plate

[0057] 1323c: Piezoelectric plate

[0058] 1323d: Piezoelectric pin

[0059] 1324: Insulation frame

[0060] 1325: Conductive frame

[0061] 1325a: Conductive pin

[0062] 1325b: Conductive electrode

[0063] 1326: Resonance Chamber

[0064] 1327: Airflow Chamber

[0065] 133: Driver circuit board

[0066] 134: Laser components

[0067] 135: Particle Sensor

[0068] 136: Outer cover

[0069] 1361: Side panels

[0070] 1361a: Air intake frame

[0071] 1361b: Air outlet frame

[0072] 137a: First Volatile Organic Compound Sensor

[0073] 137b: Second VOC sensor

[0074] 2: IoT processing device

[0075] D: Light trap distance DETAILED DESCRIPTION

[0076] Some typical 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.

[0077] See also Figure 1 The present invention provides an air detection system 100, comprising at least one smart device 1 and an Internet of Things processing device 2. The smart device 1 can be a smart city, a smart building, a smart factory, a public air quality detector, a smart street lamp, a security surveillance camera, a HVAC, or a combination thereof.

[0078] The smart device 1 includes at least one air inlet 1a, at least one air outlet 1b, a control module 12 and a gas detection module 13. In this example, the air inlet 1a and the air outlet 1b are each described as an example, but this is not limited to this. A gas flow channel 1c is provided between the air inlet 1a and the air outlet 1b. The gas detection module 13 is disposed in the gas flow channel 1c to detect the air in the gas flow channel 1c to obtain gas information. Among them, the control module 12 is disposed in the smart device 1 and is electrically connected to the gas detection module 13. The control module 12 has a processor 121 and a transmission unit 122. The processor 121 can send a driving signal to the gas detection module 13 to control the startup and operation of the gas detection module 13, and calculate the gas information measured by the gas detection module 13, and then transmit the calculated gas information to the Internet of Things processing device 2 through the transmission unit 122 for storage and analysis.

[0079] Another example FIG. 2A to FIG. 2C , FIG. 3A to FIG. 3B , Figure 4 and FIG. 5A to FIG. 5B As shown, the gas detection module 13 includes a base 131 , a piezoelectric actuator 132 , a driving circuit board 133 , a laser assembly 134 , a particle sensor 135 and an outer cover 136 . Among them, the base 131 has a first surface 1311, a second surface 1312, a laser setting area 1313, an air inlet groove 1314, an air guide component bearing area 1315 and an air outlet groove 1316. The first surface 1311 and the second surface 1312 are two surfaces arranged opposite to each other. The laser setting area 1313 runs through the first surface 1311 and the second surface 1312. The air inlet groove 1314 is formed by being recessed from the second surface 1312 and is adjacent to the laser setting area 1313. The air inlet groove 1314 is provided with an air inlet port 1314a, which is connected to the outside of the base 131 and corresponds to the air inlet frame port 1361a of the outer cover 136, and a light-transmitting window 1314b is passed through the two side walls and is connected to the laser setting area 1313. Therefore, the first surface 1311 of the base 131 is attached and covered by the outer cover 136 , and the second surface 1312 is attached and covered by the driving circuit board 133 , so that the air intake groove 1314 and the driving circuit board 133 together define an air intake path.

[0080] The air guide component bearing area 1315 is formed by the depression of the second surface 1312, and is connected to the air inlet groove 1314, and a vent hole 1315a is passed through the bottom surface. The air outlet groove 1316 is provided with an air outlet port 1316a, and the air outlet port 1316a is arranged corresponding to the air outlet frame port 1361b of the outer cover 136. The air outlet groove 1316 includes a first section 1316b formed by the depression of the vertical projection area of ​​the first surface 1311 corresponding to the air guide component bearing area 1315, and an area extending from the vertical projection area of ​​the non-air guide component bearing area 1315, and the second section 1316c is formed by penetrating the first surface 1311 and the second surface 1312 area. The first section 1316b is connected to the second section 1316c to form a step, and the first section 1316b of the outlet groove 1316 is connected to the vent hole 1315a of the air guide component bearing area 1315, and the second section 1316c of the outlet groove 1316 is connected to the outlet port 1316a. Therefore, when the first surface 1311 of the base 131 is attached and covered by the outer cover 136, and the second surface 1312 is attached and covered by the driving circuit board 133, the outlet groove 1316, the outer cover 136 and the driving circuit board 133 jointly define an outlet path.

[0081] Another example Figure 4 As shown, the laser assembly 134 and the particle sensor 135 are both disposed on the driving circuit board 133 and are located in the base 131. In order to clearly explain the location of the laser assembly 134 and the particle sensor 135 in the base 131, Figure 4 The driving circuit board 133 is omitted; Figure 4 and Figure 2C The laser assembly 134 is accommodated in the laser setting area 1313 of the base 131, and the particle sensor 135 is accommodated in the air inlet groove 1314 of the base 131 and aligned with the laser assembly 134. In addition, the laser assembly 134 corresponds to the light-transmitting window 1314b, through which the laser emitted by the laser assembly 134 passes, so that the laser is irradiated into the air inlet groove 1314, and the path of the light beam emitted by the laser assembly 134 passes through the light-transmitting window 1314b and forms an orthogonal direction with the air inlet groove 1314.

[0082] The projection light beam emitted by the laser assembly 134 enters the air inlet groove 1314 through the light-transmitting window 1314b, and irradiates the air containing suspended particles in the gas in the air inlet groove 1314. When the light beam irradiates the suspended particles, it will scatter and generate projection light spots. The particle sensor 135 receives the projection light spots generated by the scattering and performs calculations to obtain information related to the particle size and concentration of the suspended particles contained in the gas. Among them, the particle sensor 135 can be, but is not limited to, a PM2.5 sensor.

[0083] Another example Figure 5Aand Figure 5B As shown, the piezoelectric actuator 132 is accommodated in the air guide component bearing area 1315 of the base 131. The air guide component bearing area 1315 is in a square shape, and a positioning protrusion 1315b is respectively provided at its four corners. The piezoelectric actuator 132 is arranged in the air guide component bearing area 1315 through the four positioning protrusions 1315b. In addition, the air guide component bearing area 1315 is connected to the air inlet groove 1314. When the piezoelectric actuator 132 is actuated, the gas in the air inlet groove 1314 is drawn into the piezoelectric actuator 132, and the gas is passed through the vent hole 1315a of the air guide component bearing area 1315 and enters the air outlet groove 1316. In addition, through the operation of the piezoelectric actuator 132, the gas outside the smart device 1 can be further guided to enter through the air inlet 1a, then pass through the gas detection module 13, and finally be discharged from the air outlet 1b, so that the particle sensor 135 detects the introduced gas to obtain gas information.

[0084] Furthermore, the driving circuit board 133 is sealed and attached to the second surface 1312 (eg Figure 2C As shown in FIG. 1 , the laser assembly 134 is disposed on the driving circuit board 133 and is electrically connected to the driving circuit board 133. The particle sensor 135 is also disposed on the driving circuit board 133 and is electrically connected to the driving circuit board 133. The outer cover 136 covers the base 131 and is attached to and sealed on the first surface 1311 of the base 131. The outer cover 136 has a side plate 1361, and the side plate 1361 has an air inlet frame opening 1361a and an air outlet frame opening 1361b. When the outer cover 136 covers the base 131, the air inlet frame opening 1361a corresponds to the air inlet vent 1314a of the base 131, and the air outlet frame opening 1361b corresponds to the air outlet vent 1316a of the base 131.

[0085] See also Fig. 6A and Figure 6B The piezoelectric actuator 132 includes: an air jet hole sheet 1321 , a cavity frame 1322 , an actuator 1323 , an insulating frame 1324 and a conductive frame 1325 .

[0086] The jet hole sheet 1321 is made of a flexible material and has a suspension sheet 1321a and a hollow hole 1321b. The suspension sheet 1321a is a sheet-like structure that can be bent and vibrated, and its shape and size correspond to the inner edge of the air guide component bearing area 1315, but are not limited thereto. The shape of the suspension sheet 1321a can also be one of square, circular, elliptical, triangular and polygonal. The hollow hole 1321b runs through the center of the suspension sheet 1321a for gas circulation.

[0087] The cavity frame 1322 is stacked on the jet hole sheet 1321, and its appearance corresponds to the jet hole sheet 1321. The actuator 1323 is stacked on the cavity frame 1322, and defines a resonance chamber 1326 between the cavity frame 1322 and the suspension sheet 1321a. The insulating frame 1324 is stacked on the actuator 1323, and its appearance corresponds to the cavity frame 1322. The conductive frame 1325 is stacked on the insulating frame 1324, and its appearance corresponds to the insulating frame 1324. The conductive frame 1325 has a conductive pin 1325a and a conductive electrode 1325b, the conductive pin 1325a extends outward from the outer edge of the conductive frame 1325, and the conductive electrode 1325b extends inward from the inner edge of the conductive frame 1325. In addition, the actuator 1323 further includes a piezoelectric carrier 1323a, an adjustment resonance plate 1323b and a piezoelectric plate 1323c. The piezoelectric carrier 1323a is supported and stacked on the cavity frame 1322. The adjustment resonance plate 1323b is supported and stacked on the piezoelectric carrier 1323a. The piezoelectric plate 1323c is supported and stacked on the adjustment resonance plate 1323b. The adjustment resonance plate 1323b and the piezoelectric plate 1323c are accommodated in the insulating frame 1324, and are electrically connected to the piezoelectric plate 1323c by the conductive electrode 1325b of the conductive frame 1325. Among them, the piezoelectric carrier 1323a and the adjustment resonance plate 1323b can be made of, but not limited to, conductive materials. The piezoelectric carrier 1323a has a piezoelectric pin 1323d, and the piezoelectric pin 1323d and the conductive pin 1325a are connected to the driving circuit (not shown) on the driving circuit board 133 to receive the driving signal (driving frequency and driving voltage). The driving signal can form a loop through the piezoelectric pin 1323d, the piezoelectric carrier 1323a, the adjustment resonance plate 1323b, the piezoelectric plate 1323c, the conductive electrode 1325b, the conductive frame 1325, and the conductive pin 1325a, and the insulating frame 1324 blocks the conductive frame 1325 and the actuator 1323 to prevent short circuit, so that the driving signal can be transmitted to the piezoelectric plate 1323c. After receiving the driving signal (driving frequency and driving voltage), the piezoelectric plate 1323c is deformed due to the piezoelectric effect, so as to further drive the piezoelectric carrier 1323a and the adjustment resonance plate 1323b to generate reciprocating bending vibration.

[0088] As mentioned above, the adjustment resonance plate 1323b is located between the piezoelectric plate 1323c and the piezoelectric carrier plate 1323a, and serves as a buffer between the two, and can adjust the vibration frequency of the piezoelectric carrier plate 1323a. Basically, the thickness of the adjustment resonance plate 1323b is greater than the thickness of the piezoelectric carrier plate 1323a, and the thickness of the adjustment resonance plate 1323b can be changed, thereby adjusting the vibration frequency of the actuator 1323.

[0089] Please read first Fig. 7AAs shown, the jet hole sheet 1321, the cavity frame 1322, the actuator 1323, the insulating frame 1324 and the conductive frame 1325 are stacked and arranged in sequence on the gas guide component carrying area 1315. The jet hole sheet 1321 is fixed on the positioning protrusion 1315b of the gas guide component carrying area 1315, so that the piezoelectric actuator 132 can be arranged in the gas guide component carrying area 1315. A gap 1321c is defined between the jet hole sheet 1321 and the inner edge 1315c of the gas guide component carrying area 1315, and the gap 1321c allows gas to flow. In addition, an airflow chamber 1327 is formed between the air jet hole sheet 1321 and the bottom surface 1315d of the air guide component bearing area 1315, and the resonance chamber 1326 between the actuator 1323, the cavity frame 1322 and the suspension sheet 1321a is connected through the hollow hole 1321b of the air jet hole sheet 1321. The vibration frequency of the gas in the resonance chamber 1326 is controlled to be close to the vibration frequency of the suspension sheet 1321a, so that the resonance chamber 1326 and the suspension sheet 1321a can generate a Helmholtz resonance effect, thereby improving the gas transmission efficiency.

[0090] again, Figure 7B and Figure 7C for Fig. 7A Please refer to the schematic diagram of the piezoelectric actuator. Figure 7B When the piezoelectric plate 1323c moves away from the bottom surface 1315d of the air guide component bearing area 1315, it drives the suspension plate 1321a of the jet hole plate 1321 to move away from the bottom surface 1315d of the air guide component bearing area 1315, so that the volume of the airflow chamber 1327 expands rapidly, and its internal pressure drops to form a negative pressure, which attracts the gas outside the piezoelectric actuator 132 to flow in through the multiple gaps 1321c and enter the resonance chamber 1326 through the hollow hole 1321b, so that the air pressure in the resonance chamber 1326 increases and a pressure gradient is generated. Figure 7C As shown, when the piezoelectric plate 1323c drives the suspension plate 1321a of the jet hole plate 1321 to move toward the bottom surface 1315d of the air guide component bearing area 1315, the gas in the resonance chamber 1326 flows out quickly through the hollow hole 1321b, squeezing the gas in the air flow chamber 1327, 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 1326 after exhaust is lower than the equilibrium air pressure, which will guide the gas to re-enter the resonance chamber 1326. Therefore, through repeated Figure 7B and Figure 7C After the action, the piezoelectric plate 1323c is made to vibrate reciprocatingly, and the vibration frequency of the gas in the resonance chamber 1326 is controlled to be close to the vibration frequency of the piezoelectric plate 1323c, so as to produce the Helmholtz resonance effect and realize the high-speed and large-scale transmission of gas.

[0091] Another example FIG. 8A to FIG. 8C The gas path diagram of the gas detection module 13 is shown. Fig. 8A As shown, the gas enters from the air inlet frame opening 1361a of the outer cover 136, enters the air inlet groove 1314 of the base 131 through the air inlet vent 1314a, and flows to the position of the particle sensor 135. Figure 8B As shown, the piezoelectric actuator 132 is continuously driven to absorb the gas in the air intake path, so that the external gas can be quickly introduced and stably circulated, and pass through the top of the particle sensor 135. At this time, the projection light beam emitted by the laser component 134 enters the air intake groove 1314 through the light-transmitting window 1314b, and irradiates the suspended particles contained in the gas above the air intake groove 1314 passing through the particle sensor 135. When the light beam irradiates the suspended particles, it will scatter and generate projection light spots. The particle sensor 135 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 gas above the particle sensor 135 is also continuously driven and transmitted by the piezoelectric actuator 132 and introduced into the vent hole 1315a of the air guide component bearing area 1315, and enters the first section 1316b of the outlet groove 1316 (as shown in FIG. 1316 ). Figure 3A Finally, Figure 8C As shown, after the gas enters the first section 1316b of the gas outlet groove 1316, the piezoelectric actuator 132 will continuously transport the gas into the first section 1316b, and the gas in the first section 1316b will be pushed to the second section 1316c, and finally discharged outward through the gas outlet port 1316a and the gas outlet frame port 1361b.

[0092] See also Fig. 9 As shown, the base 131 further includes a light trap area 1317, which is hollowed out from the first surface 1311 to the second surface 1312 and corresponds to the laser setting area 1313. The light trap area 1317 passes through the light-transmitting window 1314b so that the light beam emitted by the laser component 134 can be projected therein. The light trap area 1317 is provided with a light trap structure 1317a with an oblique cone surface. The light trap structure 1317a corresponds to the path of the light beam emitted by the laser component 134. In addition, the light trap structure 1317a allows the projected light beam emitted by the laser component 134 to be reflected into the light trap area 1317 at the oblique cone surface structure to prevent the light beam from being reflected to the position of the particle sensor 135. A light trap distance D is maintained between the position of the projected light beam received by the light trap structure 1317a and the light-transmitting window 1314b. Preferably, the light trap distance D should be greater than 3 mm. When the light trap distance D is greater than 3 mm, it is possible to prevent the light beam projected on the light trap structure 1317 a from reflecting too much stray light to the location of the particle sensor 135 , thereby reducing the risk of distortion of detection accuracy.

[0093] Please continue reading Fig. 9 and Figure 2C As shown, the gas detection module 13 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 gas detection module 13 of the present case further includes a first volatile organic compound sensor 137a, which is positioned and arranged on the driving circuit board 133 and electrically connected thereto, and is accommodated in the gas outlet groove 1316, and detects the gas derived from the gas outlet path to detect the concentration or characteristics of the volatile organic compounds contained in the gas in the gas outlet path. Alternatively, the gas detection module 13 of the present case further includes a second volatile organic compound sensor 137b, which is positioned and arranged on the driving circuit board 133 and electrically connected thereto, and the second volatile organic compound sensor 137b is accommodated in the light trap area 1317, and detects the concentration or characteristics of the volatile organic compounds contained in the gas introduced into the light trap area 1317 through the gas inlet path of the gas inlet groove 1314 and through the light-transmitting window 1314b.

[0094] In addition, the above-mentioned transmission unit can be connected to the Internet of Things processing device 2 through wired communication transmission, such as USB connection communication transmission, or through wireless communication transmission, such as Wi-Fi communication transmission, Bluetooth communication transmission, wireless radio frequency identification communication transmission, and a near field communication transmission.

[0095] In summary, the air detection system provided in this case combines smart devices such as smart cities, smart buildings, smart factories, public air quality monitors, smart street lights, security surveillance cameras, HVAC and other smart devices with gas detection modules to create an air detection system that can detect gas information in real time in each area to provide users with the air quality in each area. When gases that may be harmful to the human body are detected, the system can immediately notify the user to eliminate the hazard or evacuate quickly, and can take preventive measures in real time, which is highly industrially applicable.

[0096] This case can be modified in various ways by those familiar with this technology, but all of them will not deviate from the scope of protection sought by the attached patent application.

Claims

1. An air detection system, comprising: At least one smart device, comprising: at least one air inlet; At least one gas outlet, with a gas flow channel disposed between the gas outlet and the gas inlet; a control module, disposed in the smart device, having a processor and a transmission unit; and A gas detection module is arranged in the gas flow channel and electrically connected to the control module, comprising a base, a driving circuit board, a laser component, a piezoelectric actuator and at least one sensor, the base having a laser setting area and an air inlet groove, the air inlet groove 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, connected to the laser setting area, the laser component is positioned on the driving circuit board and electrically connected to it, and is correspondingly accommodated in the laser setting area, and the path of a light beam emitted passes through the light-transmitting window and The sensor includes a particle sensor, which is positioned on the driving circuit board and electrically connected to the driving circuit board, and is 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 component, so as to detect particles passing through the air inlet groove and irradiated by the light beam projected by the laser component, the piezoelectric actuator guides the gas outside the smart device to enter the gas flow channel from the air inlet, and then be discharged from the air outlet, and the sensor detects the introduced gas to obtain gas information, and transmits the gas information to the control module; and An Internet of Things processing device is connected to the transmission unit of the at least one smart device to receive the gas information transmitted by the at least one smart device.

2. The air detection system according to claim 1, characterized in that: The at least one smart device is a smart building, a smart factory, a public air quality detector, a smart street lamp, a security surveillance camera, a HVAC, or a combination thereof.

3. The air detection system according to claim 1, characterized in that: The base also has: a first surface; a second surface, opposite to the first surface; The laser setting area is hollowed out from the first surface toward the second surface; The air inlet groove is formed by being recessed from the second surface; An air guide component bearing area is formed by being recessed from the second surface and connected to the air inlet groove, and has an air vent through the bottom surface. A positioning protrusion is respectively provided at the four corners of the air guide component bearing area; as well as 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, and is connected to the vent hole, and is provided with an air outlet port, which is connected to the outside of the base; The driving circuit board has a cover attached to the second surface of the base; and 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 vent and the air outlet vent of the base; The piezoelectric actuator is accommodated in the air guide component bearing area and fixed on the plurality of positioning protrusions, and 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 air from the air inlet frame opening 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, and is discharged from the vent into the air outlet path defined by the air outlet groove, and finally discharged from the air outlet frame opening.

4. The air detection system according to claim 3, characterized in that: The base also includes 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 light beam path.

5. The air detection system according to claim 4, 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.

6. The air detection system according to claim 5, characterized in that: The light trap distance is greater than 3 mm.

7. The air detection system according to claim 3, characterized in that: The particle sensor is a PM2.5 sensor.

8. The air detection system according to claim 3, characterized in that: The piezoelectric actuator comprises: A jet hole sheet, comprising a suspension sheet and a hollow hole, the suspension sheet can bend and vibrate, and the hollow hole is formed at the center of the suspension sheet; a cavity frame, superimposed on the suspension sheet; An actuator is stacked on the cavity frame to receive voltage and generate reciprocating bending vibration; an insulating frame, superposed on the actuating body; as well as A conductive frame is stacked on the insulating frame; The jet hole sheet is fixed to a plurality of the positioning protrusions in the air guide component bearing area, and a gap is defined between the jet hole sheet and an inner edge of the air guide component bearing area, through which gas flows, and an airflow chamber is formed between the jet hole sheet and a bottom of the air guide component bearing area, and 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, so that the gas enters the airflow chamber through the gap and is then discharged, thereby realizing the transmission flow of the gas.

9. The air detection system according to claim 8, characterized in that: The actuator comprises: A piezoelectric carrier plate is stacked on the cavity frame; an adjustment resonance plate, stacked on the piezoelectric carrier; and A piezoelectric plate is stacked on the adjusting resonance plate to receive voltage to drive the piezoelectric carrier plate and the adjusting resonance plate to generate reciprocating bending vibration.

10. The air detection system according to claim 4, characterized in that: The sensor of the gas detection module includes a first volatile organic compound sensor, which is electrically connected to the driving circuit board and is accommodated in the gas outlet groove to detect the gas derived from the gas outlet path.

11. The air detection system according to claim 10, characterized in that: The sensor of the gas detection module includes a second volatile organic compound sensor, which is electrically connected to the driving circuit board and is accommodated in the light trap area to detect the 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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