TWM570949U - Particle detection module - Google Patents

Abstract

A particle detecting module comprises: a base having a detecting channel and a beam channel therein; a detecting component disposed in the base and including a laser and a particle sensor, wherein the laser beam emitted by the laser is projected into the beam path The particle sensor is correspondingly disposed to the orthogonal position of the detection channel and the beam channel; the micropump is composed of a jet orifice plate, a cavity frame, an actuating body, an insulating frame and a conductive frame, which are stacked in the base and sealed. The gas guiding groove is covered; wherein the micropump is driven into the detection channel by the gas outside the driving adsorption guiding base, and the gas passes through the detecting channel and the beam path is orthogonal to the position, and is irradiated by the laser to project the light spot to the particle sensor. The particle sensor detects the size and concentration of suspended particles contained in the gas.

Description

Particle detection module

The present invention relates to a particle detecting module, and more particularly to a particle detecting module that can be combined with a thin portable device for gas monitoring.

Suspension particles refer to solid particles or droplets contained in a gas. Because of their very small particle size, they easily enter the lungs of the human body through the nasal hair in the nasal cavity, thus causing inflammation, asthma, or cardiovascular disease in the lungs. Contaminants adhere to the suspended particles, which will increase the harm to the respiratory system. In recent years, the problem of gas pollution has become more and more serious. Especially the concentration data of fine aerosols (such as PM2.5 or PM10) is often too high. The monitoring of the concentration of gas aerosols is gaining attention, but because the gas will follow the wind direction and air volume. Unquantitative flow, and the current gas 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 week. Therefore, a micro-portable gas detection device is needed for users to be able to use them all the time, anytime, anywhere. Detecting the concentration of suspended particles around.

In view of this, how to monitor the concentration of suspended particulates anytime and anywhere is an urgent problem to be solved.

The main purpose of the present invention is to provide a particle detecting module, which uses a detecting channel and a beam channel of a thin base to configure a laser detector and a particle sensor for positioning and detecting components to detect the passage through the detection channel and the beam path. The size and concentration of suspended particles contained in the gas at the orthogonal position, and the micro-pump is used to quickly extract the gas outside the pedestal into the detection channel to detect the concentration of suspended particles in the gas, so that the application is assembled in the portable electronic device and wearable The accessories are used to form a mobile particle detection module, so that the user can monitor the concentration of suspended particles at any time and any place.

A generalized embodiment of the present invention is a particle detecting module comprising: a base having a detecting component carrying area, a micro pump carrying area, a detecting channel and a beam path, the micro pump carrying area Having a gas guiding groove, the micro pump bearing area is in communication with the detecting channel, the detecting component carrying area is in communication with the beam path, and the detecting channel and the beam path are orthogonally disposed; a detecting component, a laser device and a particle sensor are disposed, the laser device is disposed on the detecting component carrying area of the base, and the emitted light beam is projected into the beam channel, and the particle sensor is correspondingly disposed to the detecting channel and The microchannel pump is composed of a jet hole plate, a cavity frame, a uniform moving body, an insulating frame and a conductive frame, and is stacked in the micro pump bearing area of the base. And sealing the air guiding groove; wherein the micro pump is driven to adsorb and guide the gas outside the base to be quickly introduced into the detecting channel, and the gas passes through the detecting channel and the beam path is orthogonal to the position The emitted light is irradiated to the light spot projected particle sensor, a sensor to detect the particulate concentration and size of suspended particles contained in the gas.

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.

Referring to FIG. 1 to FIG. 4 , the present invention provides a particle detecting module comprising a base 1 , a detecting component 2 and a micro pump 3 . In order to be able to be assembled and applied to a portable electronic device and a wearable accessory, the base 1 has a length L, a width W and a height H, for the purpose of detecting the component 2 and The micro-pump 3 is equipped with the current optimized configuration and conforms to the thin and miniaturized design. The length L of the base 1 is configured to be 10 to 60 mm, the length L is 34 to 36 mm, and the width W is configured to be 10 to 50 mm. The width W is preferably 29~31mm, and the height H is configured to be 1~7mm, and the height H is 4.5~5.5mm. The whole particle detection module is designed to be convenient to carry.

Referring to FIGS. 1 to 4, the susceptor 1 has a first surface 1a and a second surface 1b. The first surface 1a and the second surface 1b are opposite surfaces, and have a surface inside. The detecting component carrying area 11 , a micro pump carrying area 12 , a detecting channel 13 and a beam path 14 , wherein the micro pump carrying area 12 is disposed on the first surface 1 a and has an air guiding groove 121 and detecting The component carrying area 11 , the detecting channel 13 and the beam path 14 respectively penetrate the first surface 1 a and the second surface 1 b , and the micro pump carrying area 12 is connected to the detecting channel 13 , and the detecting component carrying area 11 is connected to the beam path 14 . The detection channel 13 and the beam path 14 are orthogonally disposed, and the side of the base 1 has an intake inlet 15 and an exhaust outlet 16, and the intake inlet 15 communicates with the detection passage 13, and the exhaust outlet 16 is The air guiding groove 121 is in communication.

As shown in FIG. 2, the detecting component 2 includes a detecting driving circuit board 21, a particle sensor 22, a laser lighter 23, and a microprocessor 24. The particle sensor 22, the laser device 23 and the microprocessor 24 are packaged on the detection driving circuit board 21, and the detecting driving circuit board 21 is sealed on the second surface 1b of the base 1 and the laser device 23 is provided. Correspondingly disposed in the detecting component carrying area 11 and capable of emitting a light beam projected into the beam path 14, and the particle sensor 22 is correspondingly disposed to the detecting channel 13 and the beam path 14 orthogonally, so that the microprocessor 24 controls the laser lighter 23 and the driving of the particle sensor 22, the laser beam emitted by the laser device 23 is irradiated to the gas in the beam path 14 through the detection channel 13 and the beam channel 14 at the position orthogonal to the beam channel 14, and the gas generating projection light spot is projected on the particle sensor 22, the particle The sensor 22 detects the size and concentration of the suspended particles contained in the gas and outputs a detection signal, and the microprocessor 24 receives the detection signal output by the particle sensor 22 for analysis to output the detection data. The laser illuminator 23 includes a light locating component 231 and a laser emitting component 232. The light locating component 231 is disposed on the detecting driving circuit board 21, and the laser emitting component 232 is embedded in the light locating component 231. The detection driving circuit board 21 is electrically connected to be driven by the microprocessor 24, and the emitted light beam is irradiated into the beam path 14. The particle sensor 22 is a PM2.5 sensor or a PM10 sensor.

Referring to FIG. 2, the particle detecting module further includes an insulating plate member 4, which is capped on the first surface 1a of the base 1, so that the gas outside the base 1 is as shown in FIG. The inlet 15 is introduced into the detecting passage 13 and then passed through the air guiding groove 12 of the micro pump bearing area 12, and then the exhaust outlet 16 is outside the base 1 to form a gas guiding path. As shown in FIG. 2 and FIG. 7, the particle detecting module further includes a base outer cover member 5, which is placed on the insulating plate member 4 to close the first surface 1a of the base 1 to form an electronic interference. The pedestal outer cover member 5 corresponding to the intake inlet 15 of the base 1 also has an intake inlet 51 for corresponding communication, and the base outer cover member 5 corresponds to the exhaust outlet 16 of the base 1. The position also has an exhaust outlet 52 for corresponding communication.

Referring to FIG. 2, FIG. 4, FIG. 5 and FIG. 6A, the micropump 3 described above is carried in the micropump carrying area 12 of the base 1 and covers the air guiding groove 121. The above-mentioned micropump 3 includes a gas jet orifice 31, a cavity frame 32, an actuating body 33, an insulating frame 34 and a conductive frame 35 which are sequentially stacked. The gas jet orifice 31 comprises a plurality of connecting pieces 31a and a suspension piece 31b. And a central hole 31c, the suspension piece 31b is bendable and vibrating, and the plurality of connecting members 31a are adjacent to the circumference of the suspension piece 31b. In the embodiment, the number of the connecting members 31a is four, respectively adjacent to the four corners of the suspension piece 31b. However, it is not limited thereto, and the central hole 31c is formed at a center position of the suspension piece 31b; the cavity frame 32 is carried on the suspension piece 31b, and the actuating body 33 is carried on the cavity frame 32, and includes A piezoelectric carrier 33a, an adjustment resonator 33b and a piezoelectric plate 33c, wherein the piezoelectric carrier 33a is stacked on the cavity frame 32, and the adjustment resonator 33b is placed on the piezoelectric carrier 33a. The piezoelectric plate 33c is placed on the adjustment resonance plate 33b for deformation after being applied to drive the piezoelectric carrier 33a and the adjustment resonance plate 33b for reciprocating bending vibration; the insulating frame 34 is stacked and actuated. On the piezoelectric carrier 33a of the body 33, the conductive frame 35 carries the overlay The insulating frame 34, wherein the actuator body 33, a resonant chamber 36 is formed between the cavity 32 and the suspension frame plate 31b, wherein adjusting the resonator plate 33b is thicker than the piezoelectric plate carrier 33a.

Referring to FIGS. 6A-6C, the micropump 3 is disposed on the micropump carrying area 121 through the connecting member 31a. The air venting piece 31 is spaced apart from the bottom surface of the air guiding groove 121, and an air flow chamber is formed therebetween. Referring to FIG. 6B, when a voltage is applied to the piezoelectric plate 33c of the actuating body 33, the piezoelectric plate 33c is deformed by the piezoelectric effect and is driven by the same portion to adjust the resonant plate 33b and the piezoelectric carrier 33a. At this time, the gas vent sheet 31 is driven together by the Helmholtz resonance principle, so that the actuating body 33 moves upward, and the gas venting sheet 31 and the gas guiding groove are displaced due to the upward displacement of the actuating body 33. The volume of the airflow chamber 37 between the bottom surfaces of 121 increases, and the internal air pressure thereof forms a negative pressure, and the gas outside the micropump 3 will be separated from the side wall of the air guiding groove 31 by the connecting piece 31a of the air venting piece 31 due to the pressure gradient. The intervening space enters the airflow chamber 37 and collects pressure; finally, referring to FIG. 6C, the gas continuously enters the airflow chamber 37, causing the air pressure in the airflow chamber 37 to form a positive pressure. At this time, the actuating body 33 is subjected to The voltage drive moves downwards, compressing the volume of the airflow chamber 37, and The gas in the airflow chamber 37 is pushed, and the gas is discharged from the exhaust outlet 16 outside the susceptor 1, and the micropump is provided by continuously repeating the micropump 3 shown in FIGS. 6B to 6C to provide a gas transfer operation step. 3 can continuously flow the gas from the gap between the connecting piece 31a of the air venting piece 31 and the side wall of the air guiding groove 121 into the airflow chamber 37 to form a pressure gradient, so that the gas flows at a high speed, and the micropump 3 transmits the gas output. Actuation.

The micropump 3 can also be MEMS pumped by a microelectromechanical process, wherein the air vent 31, the cavity frame 32, the actuating body 33, the insulating frame 34 and the conductive frame 35 are all permeable to the surface. A micromachining technique is made to reduce the volume of the micropump 3.

As can be seen from the above description, in the specific implementation of the present invention, when the micropump 3 is driven by the gas adsorbing and guiding the outside of the susceptor 1 into the detection channel 13, the gas passes through the detection channel 13 and the beam path. At 14 orthogonal positions, the spot is projected by the laser lighter 23 to the particle sensor 22, and the particle sensor 22 detects the size and concentration of the suspended particles contained in the gas. Therefore, the particle detection module provided in the present invention can be applied to a portable electronic device to form a mobile particle detection module. The portable device is one of a mobile phone, a tablet computer, a wearable device and a notebook computer. Or the particle detection module provided in the present application can be applied to the wearable accessory to form a mobile particle detection module. The wearing accessory is one of a charm, a button, a pair of glasses and a watch.

In summary, the particle detection module provided by the present invention utilizes a detection channel of a thin pedestal and a beam path and a laser and a particle sensor configured with a positioning detecting component to detect the passage through the detection channel. The size and concentration of suspended particles contained in the gas at the orthogonal position of the beam channel, and the micro-pump is used to quickly extract the gas outside the pedestal into the detection channel to detect the concentration of suspended particles in the gas, and the device is very suitable for application and assembly. The portable electronic device and the wearable accessory form a mobile particle detecting module, so that the user can monitor the concentration of suspended particles at any time and any place, and has great industrial applicability and advancement.

1‧‧‧Base

1a‧‧‧ first surface

1b‧‧‧ second surface

11‧‧‧Detecting component bearing area

12‧‧‧Micro pump bearing area

121‧‧‧ air guiding groove

13‧‧‧Detection channel

14‧‧‧beam channel

15‧‧‧Intake inlet

16‧‧‧Exhaust outlet

2‧‧‧Detecting parts

21‧‧‧Detection driver board

22‧‧‧Particle sensor

23‧‧‧Raylight

231‧‧‧Light positioning parts

232‧‧‧Laser emitting elements

24‧‧‧Microprocessor

3‧‧‧Micropump

31‧‧‧Air hole film

31a‧‧‧Connecting parts

31b‧‧‧suspension tablets

31c‧‧‧ center hole

32‧‧‧ cavity frame

33‧‧‧Acoustic body

33a‧‧‧Piezo carrier

33b‧‧‧Adjusting the resonance plate

33c‧‧‧Piezoelectric plate

34‧‧‧Insulation frame

35‧‧‧Electrical frame

36‧‧‧Resonance chamber

37‧‧‧Airflow chamber

H‧‧‧ Height

L‧‧‧ length

W‧‧‧Width

Figure 1 shows the appearance of the particle detection module of the present invention. Figure 2 is an exploded view of the relevant components of the particle detection module of the present invention. Figure 3 shows the base of the particle detection module of the present invention. Figure 4 is a schematic diagram showing the detection implementation of the particle detection module of the present invention. Fig. 5 is a schematic exploded view of the micropump related components of the particle detecting module of the present invention. Figure 6A is a cross-sectional view showing the micropump of the particle detecting module of the present invention. Fig. 6B to Fig. 6C are schematic diagrams showing the operation of the micropump of the particle detecting module of Fig. 6A. Figure 7 is a view showing the appearance of the base cover member of the particle detecting module of the present invention.

Claims (14)

A particle detecting module includes: a base having a detecting component carrying area, a micro pump carrying area, a detecting channel and a beam path, the micro pump carrying area having an air guiding groove, The micro pump bearing area is in communication with the detecting channel, the detecting component carrying area is in communication with the beam path, and the detecting channel is orthogonally disposed with the beam path; a detecting component includes a laser lighter and a particle sensor The laser illuminator is disposed on the detecting component carrying area of the pedestal, and the emitted light beam is projected into the beam path, and the particle sensor is correspondingly disposed to the detecting channel and the beam path orthogonally; and The micropump is composed of a jet orifice piece, a cavity frame, a uniform moving body, an insulating frame and a conductive frame, which are sequentially stacked, are carried in the micro pump bearing area of the base, and cover the air guiding concave a slot; wherein the micropump is driven to attract a gas outside the pedestal to be quickly introduced into the detecting channel, and the gas passes through the detecting channel and is orthogonal to the beam path, and is irradiated by the laser Emitting a light spot to the particulate matter sensor, the particulate sensor to detect the size and concentration of suspended particles contained in the gas. The particle detection module of claim 1, wherein the particle sensor is a PM2.5 sensor. The particle detecting module of claim 1, wherein the base has a first surface and a second surface, and the micro pump bearing area is disposed on the first surface, the detecting component carrying area, The detection channel and the beam path respectively penetrate the first surface and the second surface, and the side of the base has an intake inlet and an exhaust outlet, and the intake inlet is in communication with the detection channel, An exhaust outlet is connected to the air guiding groove, and the micro pump is driven to attract the gas outside the base to be quickly introduced into the detecting channel from the air inlet, and is orthogonal to the beam path through the detecting channel After the position, it enters the air guiding groove and is discharged from the exhaust air outlet. Outside the pedestal. The particle detecting module of claim 3, wherein the detecting component comprises a detecting driving circuit board and a microprocessor, and the laser light detector and the particle sensor are packaged on the detecting driving circuit board And the detection driving circuit board is capped on the second surface of the base, and the laser light device is correspondingly disposed in the detecting component carrying area, and the particle sensor is correspondingly disposed to the detecting channel Aligning with the beam path, the microprocessor is packaged on the detection driving circuit board to control the driving of the laser device and the particle sensor, so that the laser beam emitted by the laser beam passes through the beam channel The detection channel is adjacent to the beam channel, and the gas generates a projection spot to be projected on the particle sensor. The particle sensor detects the size and concentration of the suspended particles contained in the gas, and outputs the detection. The signal receives the detection signal output by the particle sensor for analysis to output the detection data. The particle detecting module of claim 4, further comprising an insulating plate member covering the first surface of the base, such that the gas outside the base is introduced from the air inlet In the detecting channel, the air guiding groove of the micro pump bearing area is further discharged from the exhausting outlet to form a gas guiding path. The particle detecting module of claim 5, further comprising a base outer cover member mounted on the insulating plate member to close the first surface of the base to form an electronic interference protection function The base outer cover member also has an air inlet inlet corresponding to the air inlet inlet position of the base, and the base outer cover member also has a position corresponding to the exhaust outlet of the base. The exhaust outlets are connected in communication. The particle detecting module of claim 4, wherein the laser device comprises an optical positioning component and a laser emitting component, wherein the optical positioning component is disposed on the detecting driving circuit board, and the optical positioning component is disposed on the detecting driving circuit board. The laser emitting component is embedded in the optical positioning component and electrically connected to the detecting driving circuit board to be driven by the microprocessor, and the emitted light beam is irradiated to the light beam In the middle. The particle detecting module of claim 1, wherein the air venting piece comprises a plurality of connecting members, a suspension piece and a central hole, the floating piece is bendable and vibrating, and the plurality of connecting pieces are adjacent to The suspension sheet is provided at a periphery of the suspension sheet and elastically supports the suspension sheet, and the central hole is formed at a center position of the suspension sheet, and the gas injection hole sheet is fixedly disposed above the gas guiding groove of the micro pump bearing region through a plurality of connecting members. Forming an air flow chamber between the air venting piece and the air guiding groove, and forming at least one gap between the plurality of connecting members and the floating piece; the cavity frame is stacked on the floating piece; a movable body, the carrier is stacked on the frame of the cavity to receive a voltage to generate a reciprocating bending vibration; and the insulating frame is stacked on the actuating body, and the conductive frame is disposed on the insulating frame Forming a resonant cavity between the actuating body, the cavity frame and the suspension piece, and driving the actuating body to drive the air venting piece to resonate, so that the floating piece of the air venting piece is generated The displacement is reciprocally vibrated to allow the gas to enter the gas flow chamber through the at least one gap to effect the transport flow of the gas. The particle detecting module of claim 8, wherein the actuating body comprises: a piezoelectric carrier plate stacked on the cavity frame; and an adjustment resonant plate, the carrier is stacked on the pressure And a piezoelectric plate stacked on the adjustment resonator plate to receive the voltage to drive the piezoelectric carrier and the adjustment resonator plate to generate reciprocating bending vibration. The particle detecting module of claim 1, wherein the micro pump is a micro pump of a micro electro mechanical system. The particle detection module of claim 1, wherein the particle detection module is applied The device is assembled on a portable electronic device to form a mobile particle detecting module. The particle detection module of claim 11, wherein the portable device is one of a mobile phone, a tablet computer, a wearable device, and a notebook computer. The particle detection module of claim 1, wherein the particle detection module is assembled on a wearable accessory to form a mobile particle detection module. The particle detecting module of claim 13, wherein the wearing accessory is one of a charm, a button, a pair of glasses, and a watch.