TWM570947U - Gas detection device - Google Patents

Abstract

A gas detecting device comprises: a casing, a chamber, at least one air inlet, an air outlet and at least one connecting passage, wherein the chamber communicates with the air inlet, the air outlet and the connecting passage; and an optical mechanism The device is disposed in the chamber and has a gas flow channel and a light beam passage. The gas flow path communicates with the air inlet and the air outlet, and the light beam channel communicates with the gas flow channel; a gas transmission actuator is constructed in the optical mechanism; and a laser module And disposed in the optical mechanism for emitting a light beam to be irradiated into the gas flow path; a particle sensor disposed in the gas flow path for detecting the gas emitted from the laser module in the gas flow path after the laser module emits the gas The projection light spot generated by the suspended particles is included; the external sensing module is connected to the connecting channel for sensing the air in the connecting channel.

Description

Gas detection device

The present invention relates to a gas detecting device, and more particularly to a gas detecting device for conducting gas through a gas transfer actuator.

In recent years, the air pollution problem in China and its neighboring areas has become more and more serious. Especially the concentration data of fine aerosols (PM2.5 and PM10) are often too high, and the monitoring of airborne particle concentration has been paid more and more attention. However, since the air will flow with the change of wind direction and air volume, the air quality monitoring stations for detecting suspended particles are mostly fixed points, so it is impossible to confirm the concentration of suspended particles in the current surroundings, so a micro-friendly portable gas particle detecting device is needed. The user can detect the concentration of suspended particles in the surrounding environment anytime, anywhere.

In addition, current gas particle detection devices are often only capable of detecting a single gas, but in addition to aerosols, there are many harmful gases in daily life. If it is not detected immediately, it will also affect the health of the human body. .

In addition, users will have different gas detection requirements for different places, such as factories, offices, homes, etc., such as gas sensors that require volatility or toxic gases that cause inhalation damage, homes, offices. It is a sensor for carbon monoxide, carbon dioxide, temperature, humidity, etc., but the gas detection devices currently on the market are all integrated gas detection devices, and the detected gas has been determined before leaving the factory, and cannot be customized according to user requirements. The change causes the gas detecting device to detect the gas outside the user's demand or to detect the gas required by the user, which is very inconvenient, and it is difficult for the user to select a suitable gas detecting device. In view of this, how to develop a gas detecting device that can be sensed according to gas detection requirements is currently an extremely important issue.

The main purpose of the present invention is to provide a gas detecting device capable of detecting the concentration of suspended particles contained in the air and the concentration of other gases, and providing the user with instant and accurate gas information. Among them, the sensor for detecting air is an external sensor, which can be easily matched by the user according to the needs and can be easily replaced, thereby increasing convenience.

A generalized embodiment of the present invention is a gas detecting device comprising: a housing having a chamber, at least one air inlet, an air outlet, and at least one connecting passage, the chamber and the air inlet, the air outlet and the connection The channels are connected to each other; an optical mechanism is disposed in the chamber and has a gas flow path and a beam path, the gas flow path communicates with the air inlet and the air outlet, and the light beam channel communicates with the gas flow path; a gas transmission actuator is constructed The light mechanism is configured to guide the air into the chamber through the air inlet, and then enter the gas flow path through the connecting passage; a laser module is disposed in the light mechanism for emitting the light beam to the beam channel a gas sensor disposed in the gas flow path away from one end of the gas transfer actuator for detecting a projected light spot generated by the suspended particles after the light beam illuminates the gas in the gas flow path; Detecting and calculating the size of the suspended particles contained in the air and the concentration of the suspended particles; at least one external sensing module is coupled to the connecting channel, and includes a sensor for sensing the connection The gas inside the road.

Some exemplary embodiments embodying the features and advantages of the present invention are described in detail in the following description. It is to be understood that the present invention is capable of various modifications in various embodiments, and is not intended to limit the scope of the invention.

In this case, a gas detecting device 100 is provided. Please refer to FIG. 1 and FIG. 2 at the same time. In the embodiment of the present invention, the gas detecting device 100 includes a casing 1, a light mechanism 2, a gas transmission actuator 3, a laser module 4, a particle sensor 5, and at least one external sensing module 6. The housing 1 has a chamber 11, at least one air inlet 12, an air outlet 13 and at least one connecting passage 14. The chamber 11 is in communication with at least one air inlet 12, an air outlet 13 and at least one connecting passage 14. The optical mechanism 2 is disposed in the chamber 11 of the housing 1 and has a gas flow path 21 and a beam path 22. The gas flow path 21 communicates with at least one of the gas inlet 12 and the gas outlet 13, and the light beam passage 22 communicates with the gas flow path 21. The gas transmission actuator 3 is constructed in the optical mechanism 2, and the gas transmission actuator 3 is actuated to change the air pressure inside the chamber 11, so that the gas can enter the chamber 11 from at least one air inlet 12, and then at least A connecting passage 14 enters the gas flow path 21 and is finally discharged from the outside of the casing 1 by the air outlet 13. The laser module 4 is disposed in the optical mechanism 2 for emitting a light beam, and the light beam illuminates the gas flow path 21 via the beam path 22. The particle sensor 5 is disposed at one end of the gas flow path 21 away from the gas transfer actuator 3. When the light beam projected by the laser module 4 illuminates the gas in the gas flow path 21, the suspended particles in the gas generate a plurality of projected light spots, and the particle sensor 5 receives a plurality of projected light spots, and calculates the suspended particles in the air. Size and concentration. The at least one external sensing module 6 is detachably assembled to the at least one connecting channel 14 , wherein at least one connecting channel 14 and at least one external sensing module 6 are combined with each other. In this embodiment, the number of the connection channel 14 and the external sensing module 6 may be five, but not limited thereto. The external sensing module 6 includes a sensor (not shown), and the sensor can be one of an oxygen sensor, a carbon monoxide sensor, a carbon dioxide sensor, or a combination thereof, or a volatile organic substance sensor, which may also be one or a combination of a bacteria sensor, a virus sensor and a microbial sensor, or the sensor may be a temperature sensor or a humidity sensor One of or a combination of the devices.

Continuing to refer to FIG. 2 , the optical mechanism 2 further has a light source setting groove 23 and a receiving groove 24 . The light source setting groove 23 communicates with the beam path 22 , and the receiving groove 24 is disposed on the gas flow path 21 away from the particle sensor 5 . One end of the gas transmission actuator 3 is accommodated. When the gas transfer actuator 3 is driven, the air outside the casing 1 will enter the chamber 11 through the air inlet 12, and the gas will be introduced into the gas flow path 21 from the chamber 11 by the gas transfer actuator 3. At this time, the laser module 4 emits a light beam into the beam channel 22 to illuminate the gas in the gas channel 21, and the suspended particles in the gas are scattered by the beam, and the particle sensor 5 receives the suspended particles and is irradiated by the beam. The light spot is used to calculate the size and concentration of suspended particles in the air. The suspended particles may be PM2.5 suspended particles or PM10 suspended particles. At the same time, the external sensing module 6 in the connecting channel 14 communicating with the chamber 11 uses its sensor to detect the gas flowing into the connecting channel 14 for measuring the content of a specific gas in the air.

Please refer to FIG. 3A, FIG. 3B and FIG. 4A simultaneously. In the embodiment of the present invention, the gas transmission actuator 3 is a piezoelectric pump including an air inlet plate 31, a resonant plate 32, and a piezoelectric actuator. The device 33 has a first insulating sheet 34, a conductive sheet 35 and a second insulating sheet 36. The air intake plate 31, the resonance plate 32, the piezoelectric actuator 33, the first insulating sheet 34, the conductive sheet 35, and the second insulating sheet 36 are stacked in sequence.

In the embodiment of the present invention, the air inlet plate 31 has at least one air inlet hole 31a, at least one bus bar groove 31b, and a confluence chamber 31c. At least one bus bar groove 31b is provided corresponding to at least one air intake hole 31a. The intake hole 31a is for introducing a gas, and the bus bar 31b guides the gas introduced from the intake hole 31a to the confluence chamber 31c. The resonator piece 32 has a center hole 32a and a movable portion 32b. The center hole 32a is provided corresponding to the confluence chamber 31c of the air intake plate 31. The movable portion 32b is provided around the central hole 32a. A chamber space 37 is formed between the resonator piece 32 and the piezoelectric actuator 33. Therefore, when the piezoelectric actuator 33 is driven, the gas is introduced from at least one intake hole 31a of the air intake plate 31, and is collected to the confluence chamber 31c via at least one bus bar groove 31b. Then, the gas passes through the center hole 32a of the resonator piece 32, so that the piezoelectric actuator 33 resonates with the movable portion 32b of the resonance piece 32 to transport the gas.

Referring to FIGS. 3A, 3B, and 4A, the piezoelectric actuator 33 includes a suspension plate 33a, an outer frame 33b, at least one bracket 33c, and a piezoelectric element 33d. In the embodiment of the present invention, the suspension plate 33a has a square shape and can be flexed and shaken, but not limited thereto. The suspension plate 33a has a convex portion 33f. In the embodiment of the present invention, the suspension plate 33a is designed in a square shape because the structure of the square suspension plate 33a obviously has the advantage of power saving compared to the circular shape. The capacitive load operating at the resonant frequency increases its power consumption as the resonant frequency increases. Since the resonant frequency of the square suspension plate 33a is lower than that of the circular suspension plate, the power consumed is also low. However, in other embodiments, the shape of the suspension plate 33a may vary depending on actual needs. The outer frame 33b is circumferentially disposed on the outer side of the suspension plate 33a. At least one bracket 33c is coupled between the suspension plate 33a and the outer frame 33b to provide a supporting force for elastically supporting the suspension plate 33a. The piezoelectric element 33d has a side length which is less than or equal to one side length of the suspension plate 33a. And the piezoelectric element 33d is attached to one surface of the suspension plate 33a for applying a driving voltage to drive the suspension plate 33a to bend and vibrate. At least one gap 33e is formed between the suspension plate 33a, the outer frame 33b and the at least one bracket 33c for gas to pass therethrough. The convex portion 33f is protruded from the other surface of the suspension plate 33a. In the embodiment of the present invention, the suspension piece 33a and the convex portion 33f are integrally formed by an etching process, but are not limited thereto.

Referring to FIG. 4A, in the embodiment of the present invention, the chamber space 37 can be filled with a material, such as a conductive paste, by using a gap generated between the resonator piece 32 and the frame 33b outside the piezoelectric actuator 33, but not This is limited to maintain a certain depth between the resonant plate 32 and the suspension plate 33a, thereby guiding the gas to flow more rapidly. Further, since the suspension plate 33a and the resonance piece 32 are kept at an appropriate distance, contact interference with each other is reduced, and generation of noise can also be reduced. In other embodiments, the thickness of the conductive paste filled in the gap between the resonator piece 32 and the frame 33b outside the piezoelectric actuator 33 can be reduced by increasing the height of the outer frame 33b of the piezoelectric actuator 33. . Thus, in the case where the suspension plate 33a and the resonance plate 32 can still be kept at an appropriate distance, the overall assembly of the gas transmission actuator 3 does not affect the thickness of the filled conductive rubber due to the hot pressing temperature and the cooling temperature, and the conduction can be avoided. The glue affects the actual size of the chamber space 37 after assembly is completed due to thermal expansion and contraction factors. In other embodiments, the suspension plate 33a may be formed by stamping such that the convex portion 33f of the suspension plate 33a is away from a surface of the piezoelectric element 33d and forms a non-coplanar with a surface of the outer frame 33b remote from the piezoelectric element 33d. That is, the surface of the convex portion 33f away from the piezoelectric element 33d will be lower than the surface of the outer frame 33b away from the piezoelectric element 33d. A small amount of filling material, such as a conductive paste, is applied to the surface of the outer frame 33b away from the piezoelectric element 33d, and the piezoelectric actuator 33 is attached to the resonant plate 32 by heat pressing, thereby enabling the piezoelectric actuator 33 to be It is combined with the resonator piece 32. By forming the suspension plate 33a of the piezoelectric actuator 33 in a press form, the structure of the chamber space 37 is improved, and the chamber space 37 is adjusted by the adjustment of the suspension plate 33a of the piezoelectric actuator 33. This completes the structural design steps of the adjustment chamber space 37. At the same time, it also achieves the advantages of simplifying the process and shortening the process time. In the embodiment of the present invention, the first insulating sheet 34, the conductive sheet 35 and the second insulating sheet 36 are all thin frame-shaped sheets, but are not limited thereto.

Referring to FIGS. 3A, 3B, and 4A, the air intake plate 31, the resonant plate 32, the piezoelectric actuator 33, the first insulating sheet 34, the conductive sheet 35, and the second insulating sheet 36 are all transparent. The electromechanical surface micromachining process reduces the volume of the gas delivery actuator 3 to form a gas transmission actuator 3 of a microelectromechanical system.

Referring to FIG. 4B, in the operation of the piezoelectric actuator 33, the piezoelectric element 33d of the piezoelectric actuator 33 is deformed by applying a driving voltage, and the suspension plate 33a is displaced in a direction away from the air inlet plate 31. At this time, the volume of the chamber space 37 is increased, and a negative pressure is formed in the chamber space 37, and the gas in the confluence chamber 31c is taken into the chamber space 37. At the same time, the resonance piece 32 generates resonance resonance displacement in a direction away from the air intake plate 31, which increases the volume of the confluence chamber 31c. Due to the relationship between the gas in the confluence chamber 31c entering the chamber space 37, the confluence chamber 31c is also in a negative pressure state, and the gas is sucked into the confluence chamber 31c through the inlet port 31a and the bus bar groove 31b.

Next, as shown in FIG. 4C, the piezoelectric element 33d drives the suspension plate 33a toward the air intake plate 31 to compress the chamber space 37. Similarly, the resonance plate 32 is actuated by the suspension plate 33a to resonate toward the air intake plate 31. The displacement forces the gas in the synchronous push chamber space 37 to be further transported through the gap 33e to achieve the effect of transporting gas.

Finally, as shown in FIG. 4D, when the suspension plate 33a is brought back to the state not being driven by the piezoelectric element 33d, the resonance piece 32 is also simultaneously driven to be displaced away from the air inlet plate 31, and the resonance at this time. The sheet 32 moves the gas in the compression chamber space 37 toward the gap 33e, and raises the volume in the confluence chamber 31c so that the gas can continuously converge in the confluence chamber 31c through the intake hole 31a and the bus bar groove 31b. By continuously repeating the operation of the gas transfer actuator 3 shown in the above FIGS. 4B to 4D, the gas transfer actuator 3 can continuously flow the gas at a high speed to reach the gas transfer actuator 3 to transmit and output gas. operating.

Next, referring back to FIGS. 3A, 3B, and 4A, the first insulating sheet 34, the conductive sheet 35, and the second insulating sheet 36 are sequentially stacked and placed on the piezoelectric actuator 33. A conductive pin 351 protrudes from the outer edge of the conductive sheet 35, and a curved electrode 352 protrudes from the inner edge. The electrode 352 is electrically connected to the piezoelectric element 33d of the piezoelectric actuator 33. The conductive pin 351 of the conductive sheet 35 is externally turned on to externally drive the piezoelectric element 33d of the piezoelectric actuator 33. Further, the arrangement of the first insulating sheet 34 and the second insulating sheet 36 can avoid the occurrence of a short circuit.

During the detection of the gas detecting device 100 or at a predetermined time point, the driving gas transfer actuator 3 is actuated to allow external air to be introduced from the air inlet 12 and to eject the gas at a high speed through the gas transmission actuator 3 In the gas flow path 21, the surface of the particle sensor 5 is cleaned, and the suspended particles adhering to the surface of the particle sensor 5 are sprayed to maintain the accuracy of the particle sensor 5 for each detection. The preset time point may be set before each test operation, or a plurality of preset time points having a fixed time interval (for example, automatic cleaning every three minutes), or manually set by the user, or In order to use the software to determine based on the instantaneous monitoring of numerical calculations, it is not limited to the examples here.

Referring to FIG. 5, which is a cross-sectional view of a gas transmission actuator of another preferred embodiment of the gas detecting device 100 of the present invention, the gas transmission actuator in this embodiment is another form of piezoelectric drum. The air pump, the gas transfer actuator shown in the figure, is designated by the numeral 8, and the gas transfer actuator 8 will be described below. The gas transfer actuator 8 is disposed in the accommodating groove 24 of the optical mechanism 2. Continuing to refer to FIG. 6 and FIG. 7A, the gas transfer actuator 8 includes a gas jet orifice 81, a cavity frame 82, an actuator 83, an insulating frame 84, and a conductive frame 85 which are sequentially stacked; the gas jet orifice 81 The plurality of connecting members 81a, a suspension piece 81b and a central hole 81c are included. The suspension piece 81b can be flexed and vibrated, and the plurality of connecting pieces 81a are adjacent to the periphery of the suspension piece 81b. In the embodiment, the number of the connecting pieces 81a is four. , respectively, adjacent to the four corners of the suspension piece 81b, but not limited thereto, and the central hole 81c is formed at the center position of the suspension piece 81b; the cavity frame 82 is carried on the suspension piece 81b, and the actuator 83 carries the stack The device is disposed on the cavity frame 82 and includes a piezoelectric carrier 83a, an adjustment resonator plate 83b, and a piezoelectric plate 83c. The piezoelectric carrier 83a is stacked on the cavity frame 82 to adjust the resonance plate. The 83b carrier is stacked on the piezoelectric carrier 83a, and the piezoelectric plate 83c is placed on the adjustment resonator plate 83b for deformation after being applied to drive the piezoelectric carrier 83a and the adjustment resonator 83b for reciprocating bending vibration; The frame 84 carries the piezoelectric carrier 83a stacked on the actuator 83. The conductive frame 85 is stacked on the insulating frame 84, and a vibration chamber 86 is formed between the actuator 83, the cavity frame 82 and the suspension piece 81b. Further, the thickness of the adjustment resonance plate 83b is larger than that of the piezoelectric carrier. The thickness of 83a.

As described above, the gas transfer actuators 8 are respectively connected to the inner side walls 24b of the accommodating grooves 24 through the four connecting members 81a, and are spaced apart from the bottom surface 24a of the accommodating grooves 24, so that the suspension sheets 81b and the accommodating grooves 24 are provided. An air flow chamber 87 is formed between the bottom surface 24a, and a plurality of gaps 81d are formed between the suspension piece 81b, the plurality of connecting members 81a, and the side wall portions 24b of the accommodating grooves 24. In addition, the piezoelectric carrier 83a further has a first conductive pin 83d. The first conductive pin 83d extends outward from the periphery of the piezoelectric carrier 83a, and the conductive frame 85 also has a second conductive pin 85a. An electrode portion 85b, the second conductive pin 85a is formed to extend outward from the outer periphery of the conductive frame 85, and the electrode portion 85b is formed to extend inwardly from the inner periphery of the conductive frame 85, so that the structure of the gas transfer actuator 8 is sequentially stacked. After that, the electrode portion 85b can be electrically connected to the piezoelectric piece 83c, so that the first conductive pin 83d and the second conductive pin 85a can smoothly form a loop after receiving the driving signal.

Please refer to FIG. 7A to FIG. 7C. Referring to FIG. 7A, the gas transmission actuator 8 is disposed in the accommodating groove 24 of the optical mechanism 2, and the air venting aperture 81 is spaced apart from the bottom surface 24a of the accommodating groove 24. And forming an air flow chamber 87 therebetween; referring to FIG. 7B, when a driving voltage is applied to the piezoelectric plate 83c of the actuator 83, the piezoelectric plate 83c starts to be deformed by the piezoelectric effect and is driven by the same portion. The resonance plate 83b is adjusted to the piezoelectric carrier 83a. At this time, the air ejection orifice 81 is driven together by the Helmholtz resonance principle, so that the actuator 83 moves upward, and since the actuator 83 is displaced upward, The volume of the airflow chamber 87 between the air venting sheet 81 and the bottom surface 24a of the accommodating groove 24 is increased, and the internal air pressure thereof forms a negative pressure, and the gas outside the gas transmission actuator 8 will be pressed by the gas venting sheet 81 due to the pressure gradient. The gap 81d between the bracket 81a and the side wall portion 24b of the accommodating groove 24 enters the airflow chamber 87 and is collected; finally, referring to Fig. 7C, the gas continuously enters the airflow chamber 87, so that the airflow chamber 87 is inside. The air pressure forms a positive pressure, at which time the actuator 83 is driven downward by the voltage, The volume of the gas flow chamber 87 is compressed, and the gas in the gas flow chamber 87 is pushed to allow the gas to enter the gas flow path 21, and the gas is supplied to the particle sensor 5 to detect the size and concentration of the suspended particles in the gas, and the gas is transmitted through the gas. The actuator 8 continuously draws the gas in the chamber 11 so that the gas outside the casing 1 can continuously enter the chamber 11 and flow into the connecting passage 14 for the external sensor 6 to detect the gas in the connecting passage 14. Specific gas content.

Referring to FIGS. 1 and 8, the gas detecting device 100 further includes a driving component 7 including a battery module 71 for storing electrical energy and outputting electrical energy, and providing a driving gas transmission actuator. 3. The electrical energy of the laser module 4, the particle sensor 5 and the external sensing module 6. The battery module 71 can externally connect a power supply device 200, receive the energy of the power supply device 200, and store the energy. The power supply device 200 can transmit energy by wire conduction, and can also transmit energy to the battery module 71 through wireless conduction. Limited.

Continuing to refer to FIGS. 1 and 8 , the drive assembly 7 further includes a communication module 72 and a processor 73 . The processor 73 is electrically connected to the battery module 71, the communication module 72, the gas transmission actuator 3, the laser module 4, and the particle sensor 5 for driving the gas transmission actuator 3, the laser module 4, and the particle sensor. 5. The external sensing module 6 is connected to the connecting channel 14 and electrically connected to the processor 73. Therefore, the sensor detected by the particle sensor 5 and the external sensing module 6 can pass through the processor. 73 performs analytical calculations and storage, and can be converted into a monitored value. When the processor 73 activates the gas transfer actuator 3, the gas transfer actuator 3 starts to draw the gas, and the gas enters the gas flow path 21, and the gas in the gas flow path 21 is projected by the laser module 4 onto the light beam. The light beam of the channel 22 is irradiated, so that the particle sensor 5 receives the light spot scattered by the suspended particles in the gas flow path 21, and transmits the detection result to the processor 73, and the processor 73 calculates the air according to the detection result. The size and concentration of the aerosols are analyzed to produce a monitored value for storage. The monitored value stored by the processor 73 is sent by the communication module 72 to an external connection device 300. The external connection device 300 can be one of a cloud system, a portable device, a computer system, a display device, and the like for displaying a monitoring value and an alarm indication.

Further, when the processor 73 activates the gas transfer actuator 3, the gas transfer actuator 3 delivers the gas in the chamber 11 into the gas flow path 21, causing the chamber 11 to assume a negative pressure state, and then starts to be inhaled. The port 12 is sucked into the gas outside the casing 1. At this time, the gas entering the chamber 11 is diffused to the connecting passage 14, and the sensor in the external sensing module 6 in the connecting passage 14 starts to be in the connecting passage 14. The gas is detected, and the detection result is transmitted to the processor 73. The processor 73 calculates the concentration of the specific gas contained in the gas according to the detection result, and analyzes and generates the monitoring value for storage, and the processor 73 stores The monitored value is sent by the communication module 72 to the external connection device 300.

In addition, the communication module 72 can be transmitted to the external connection device 300 through wired transmission or wireless transmission. The wired transmission mode is one of USB, mini-USB, micro-USB, etc., and the wireless transmission mode is, for example, Wi-Fi. One of the module, the Bluetooth module, the radio frequency identification module, and a near field communication module.

In summary, the gas detecting device provided in the present invention has a gas transmission actuator for introducing the gas in the chamber into the gas flow channel, and the particle sensor receives the light beam projected by the laser module and hits the suspended particles. The resulting projection spot is used to calculate the size and concentration of the aerosol in the air. In addition, since the gas transmission actuator continuously delivers the gas from the chamber to the gas flow path, the chamber always exhibits a negative pressure state, prompting the shell. The extracorporeal gas continuously enters the chamber through the air inlet and then diffuses to the connecting channel communicating with the chamber, so that the sensor in the external sensing module in the connecting channel can detect the specific gas content in the air. The external sensing module is detachably assembled in the connecting channel, so that the user can easily replace the required gas sensor according to the needs thereof, and when the sensor is damaged, Easy replacement, no need to go back to the original factory for repair or re-purchase a new gas detection device.

This case has been modified by people who are familiar with the technology, but it is not intended to be protected by the scope of the patent application.

100‧‧‧Gas detection device

1‧‧‧shell

11‧‧‧ chamber

12‧‧‧air inlet

13‧‧‧ gas outlet

14‧‧‧Connected channel

2‧‧‧Light institutions

21‧‧‧ gas flow path

22‧‧‧beam channel

23‧‧‧Light source setting slot

24‧‧‧ accommodating slots

24a‧‧‧ bottom

24b‧‧‧ inner side wall

3‧‧‧ gas transmission actuator

31‧‧‧Air intake plate

31a‧‧‧Air intake

31b‧‧‧ busbar slot

31c‧‧‧ confluence chamber

32‧‧‧Resonance film

32a‧‧‧Central hole

32b‧‧‧movable department

33‧‧‧ Piezoelectric Actuator

33a‧‧‧suspension plate

33b‧‧‧ frame

33c‧‧‧ bracket

33d‧‧‧Piezoelectric components

33e‧‧‧ gap

33f‧‧‧ convex

34‧‧‧First insulation sheet

35‧‧‧Conductor

351‧‧‧Electrical pins

352‧‧‧electrode

36‧‧‧Second insulation sheet

37‧‧‧Case space

4‧‧‧Laser module

5‧‧‧Particle sensor

6‧‧‧External sensing module

7‧‧‧Drive components

71‧‧‧ battery module

72‧‧‧Communication module

73‧‧‧ Processor

8‧‧‧ gas transmission actuator

81‧‧‧jet film

81a‧‧‧Connecting parts

81b‧‧‧suspension tablets

81c‧‧‧Central Hole

81d‧‧‧ gap

82‧‧‧ cavity frame

83‧‧‧Actuator

83a‧‧‧Piezo carrier

83b‧‧‧Adjusting the resonance plate

83c‧‧‧ Piezo Pieces

83d‧‧‧First conductive pin

84‧‧‧Insulation frame

85‧‧‧Electrical frame

85a‧‧‧Second conductive pin

85b‧‧‧Electrode

86‧‧‧Vibration chamber

87‧‧‧Airflow chamber

200‧‧‧Power supply unit

300‧‧‧External connection device

Fig. 1 is a schematic perspective view showing the gas detecting device of the present invention. Figure 2 is a schematic cross-sectional view of the gas detecting device of the present invention. FIG. 3A is a perspective exploded view of the gas transmission actuator of the preferred embodiment of the present invention as seen from a plan view. FIG. 3B is a perspective exploded view of the gas transmission actuator according to a preferred embodiment of the present invention as viewed from a viewing angle. 4A is a cross-sectional view showing a gas transmission actuator of a preferred embodiment of the gas detecting device of the present invention. 4B to 4D are schematic views showing the operation of the gas transmission actuator of a preferred embodiment of the gas detecting device of the present invention. Fig. 5 is a schematic cross-sectional view showing a gas transmission actuator of another preferred embodiment of the gas detecting device of the present invention. Figure 6 is an exploded perspective view of the gas transmission actuator of another preferred embodiment of the present invention in Figure 5. Fig. 7A is a schematic cross-sectional view showing a gas transmission actuator of another preferred embodiment of the present invention in Fig. 6. 7B to 7C are schematic views showing the operation of the gas transmission actuator of another preferred embodiment of the present invention in Fig. 7A. Figure 8 is a schematic diagram of the system of the gas detecting device of the present invention.

Claims (26)

A gas detecting device comprises: a casing having a chamber, at least one air inlet, an air outlet and at least one connecting passage, wherein the chamber communicates with the air inlet, the air outlet and the connecting passage; An optical mechanism, disposed in the chamber, has a gas flow path and a beam path, the gas flow path is connected to the air inlet and the air outlet, the light beam channel is connected to the gas flow channel; a gas transmission actuator, Constructed in the optical mechanism, after being actuated, guiding air enters the chamber from the air inlet, and then enters the gas flow path through the connecting passage; a laser module is disposed in the optical mechanism, A beam is emitted from the beam channel and is incident on the gas channel; a particle sensor is disposed at the gas channel away from the gas delivery actuator for detecting that the beam illuminates a gas in the gas channel a projected light spot generated by the suspended particles in the gas, thereby detecting and calculating the size of the suspended particles contained in the gas and the concentration of the suspended particles; and at least one external sensing module connected to the connection The track includes a sensor for sensing the gas in the connecting channel. The gas detecting device of claim 1, wherein the light mechanism has a light source setting groove and a receiving groove, wherein the light source setting groove communicates with the beam path, and the receiving groove is disposed at the gas flow path away from the gas channel The other end of the particle sensor. The gas detecting device of claim 2, wherein the gas transmitting actuator is disposed in the receiving groove of the optical mechanism for guiding the gas to the gas flow path. The gas detecting device of claim 2, wherein the laser module is disposed in the light source setting groove of the light mechanism for emitting and projecting a light beam in the beam path. The gas detecting device according to claim 1, wherein the aerosol detected by the particle sensor is PM2.5 suspended particles. The gas detecting device according to claim 1, wherein the suspended particles detected by the particle sensor are PM10 suspended particles. The gas detecting device according to claim 1, wherein the gas transfer actuator is actuated to eject the gas into the gas flow path at a high speed to clean the surface of the particle sensor, and the spray is adhered to The aerosol particles on the surface of the particle sensor are used to maintain the accuracy of each monitoring of the particle sensor. The gas detecting device of claim 1, further comprising a processor and a communication module, wherein the processor is configured to drive the gas transmission actuator, the laser module, the particle sensor and the external device The sensing module analyzes the result detected by the particle sensor and the sensor of the external sensing module, and converts the result into a monitoring value, and the communication module sends the monitoring value to an external connecting device. Therefore, the monitoring value and the one-way alarm indication are displayed by the external connecting device. The gas detecting device of claim 8, wherein the communication module is at least one of a wired communication transmission and a wireless communication transmission. The gas detecting device of claim 9, wherein the wired communication transmission is at least one of a USB, a mini-USB, and a micro-USB. The gas detecting device of claim 9, wherein the wireless communication transmission system is at least one of a Wi-Fi module, a Bluetooth module, a radio frequency identification module, and a near field communication module. one. The gas detecting device of claim 8, wherein the external connecting device is at least one of a cloud system, a portable device, a computer system, and the like. The gas detecting device of claim 8, further comprising a battery module for storing electrical energy and outputting electrical energy, so that the processor can drive the gas transmitting actuator, the laser module, and the microparticle The sensor and the sensor of the external sensing module, the battery module can be externally connected to a power supply device for receiving electrical energy for storage. The gas detecting device of claim 13, wherein the power supply device delivers electrical energy in a wired conduction manner to the battery module for storage. The gas detecting device of claim 13, wherein the power supply device delivers electrical energy in a wireless conduction manner to the battery module for storage. The gas detecting device of claim 1, wherein the gas transmission actuator comprises: an air inlet plate having at least one air inlet hole, at least one pair of bus bar slots corresponding to the position of the air inlet hole, and a manifold a gas passage for introducing a gas, the bus bar groove for guiding the gas introduced from the gas inlet hole to the confluence chamber; a resonance piece having a central hole corresponding to the position of the confluence chamber And surrounding the movable portion; and a piezoelectric actuator disposed in position corresponding to the resonant plate; wherein the air inlet plate, the resonant plate, and the piezoelectric actuator are sequentially stacked, And a cavity space is formed between the resonant plate and the piezoelectric actuator, so that when the piezoelectric actuator is driven, the gas is introduced from the air inlet hole of the air inlet plate, and the current is introduced through the air flow. The venting groove is collected into the convection chamber, and then passes through the central hole of the resonant piece, so that the piezoelectric actuator resonates with the movable portion of the resonant piece to transmit the gas. The gas detecting device of claim 16, wherein the piezoelectric actuator comprises: a suspension plate having a square shape and being bendable and vibrating; and an outer frame disposed around the outer side of the suspension plate At least one bracket connected between the suspension plate and the outer frame to provide elastic support; and a piezoelectric element having a side length which is less than or equal to one side length of the suspension plate, and the piezoelectric The component is attached to a surface of the suspension plate for receiving a voltage to drive the suspension plate to bend and vibrate. The gas detecting device of claim 16, wherein the gas transmitting actuator comprises: a first insulating sheet, a conductive sheet and a second insulating sheet; wherein the air inlet plate and the resonant piece The piezoelectric actuator, the first insulating sheet, the conductive sheet and the second insulating sheet are stacked in sequence. The gas detecting device according to claim 1, wherein the sensor of the external sensing module is at least one of an oxygen sensor, a carbon monoxide sensor and a carbon dioxide sensor, or any combination thereof. Group of. The gas detecting device of claim 1, wherein the sensor of the external sensing module is a volatile organic sensor. The gas detecting device of claim 1, wherein the sensor of the external sensing module is configured to monitor at least one of bacteria, viruses and microorganisms or any combination thereof. The gas detecting device of claim 1, wherein the sensor of the external sensing module is a combination of at least one of a temperature sensor and a humidity sensor. group. The gas detecting device of claim 8, wherein the sensor of the external sensing module is connected to the connecting channel and electrically and dataly connected to the processor. The gas detecting device of claim 1, wherein the gas transfer actuator comprises: a gas jet sheet comprising a plurality of connecting members, a suspension piece and a central hole, the floating piece being bendable and vibrating, the plural a connecting member is connected to the accommodating groove to position the air venting hole in the accommodating groove, and an air flow chamber is formed between the air venting piece and a bottom surface of the accommodating groove, and the plurality of connections are Forming at least one gap between the suspension piece and the accommodating groove; a cavity frame stacked on the suspension piece; an actuator stacked on the cavity frame to receive a voltage to generate a reciprocating type Ground bending vibration; an insulating frame stacked on the actuator; and a conductive frame disposed on the insulating frame; wherein the actuator, the cavity frame and the suspension sheet are formed a vibrating chamber drives the actuator to drive the air vent to resonate, causing the suspension piece of the vent to vibrate and reciprocate to cause the gas to enter the air chamber through the at least one gap And then discharged from the air outlet to realize the transmission and flow of the air. The gas detecting device of claim 24, wherein the actuator comprises: a piezoelectric carrier plate stacked on the cavity frame; an adjustment resonant plate, the carrier is stacked on the piezoelectric carrier And a piezoelectric sheet stacked on the adjustment resonance plate, receiving the voltage to drive the piezoelectric carrier and the adjustment resonance plate to generate reciprocating bending vibration. The gas detecting device of claim 25, wherein the thickness of the adjusting resonator plate is greater than the thickness of the piezoelectric carrier.