CN110873681B - Mobile device with particle detection module - Google Patents

Abstract

A mobile device having a particle detection module, comprising: a base, a body having an air inlet; particle detection module sets up in this internally, dock intercommunication air inlet, contains: a base, the inside of which is provided with a detection channel and a light beam channel; the detection component is arranged in the base and comprises a laser and a particle sensor, the laser emits light beams to be projected in the light beam channel, and the particle sensor is correspondingly arranged at the orthogonal position of the detection channel and the light beam channel; the micropump is borne in the base and covers the air guide groove; the micro pump is driven to attract and guide the gas outside the base to be led into the detection channel fast, the gas passes through the detection channel and the orthogonal position of the beam channel, the laser irradiates to project light spots to the particle sensor, and the particle sensor detects the size and concentration of suspended particles in the gas.

Description

Mobile device with particle detection module

[ field of technology ]

The present invention relates to a mobile device, and more particularly, to a mobile device with a thin particle detection module for monitoring gas particles.

[ background Art ]

The aerosol particles are solid particles or liquid drops contained in the air, and the particles are very fine in particle size, so that the particles can easily enter the lungs of a human body through nasal hairs in the nasal cavity, thereby causing inflammation, asthma or cardiovascular lesions of the lungs, and if other pollutants are attached to the aerosol particles, the harm to respiratory systems is further increased. In recent years, the air pollution problem is more and more serious, especially, the concentration data of fine suspended particles (such as PM2.5 or PM 10) is often too high, and the monitoring of the concentration of the suspended particles is more and more important, but because the air can flow along the wind direction and the air quantity in a variable quantity, the current air quality monitoring stations for detecting the suspended particles are mainly used for fixed-point monitoring, so that the concentration of the suspended particles around the current air quality monitoring stations cannot be confirmed at all, and therefore, a miniature and portable gas detection device is needed for a user to detect the concentration of the suspended particles around any time and any place.

In view of this, it is an urgent need to solve the problem how to monitor the concentration of the suspended particles at any time and any place.

[ invention ]

The main object of the present invention is to provide a mobile device with a particle detection module, which is achieved by embedding the thin particle detection module into the mobile device, wherein the base of the particle detection module is provided with a detection channel and a beam channel, and a laser and a particle sensor for positioning the detection component are arranged in the base to detect the size and the concentration of suspended particles in the gas passing through the orthogonal position of the detection channel and the beam channel, and the micro pump is used for rapidly sucking the gas outside the body of the mobile device into the detection channel to detect the concentration of the suspended particles in the gas, so that the mobile particle detection device is formed, and a user can monitor the concentration of the suspended particles around at any time and any place.

One broad aspect of the present invention is a mobile device with a particle detection module, comprising: a base and a body having an air inlet; a particle detection module, set up in this body, butt joint intercommunication this air inlet includes: the base is internally provided with a detection part bearing area, a micro pump bearing area, a detection channel and a light beam channel, wherein the detection channel is communicated with the air inlet of the body, the micro pump bearing area is provided with an air guide groove, the micro pump bearing area is communicated with the detection channel, the detection part bearing area is communicated with the light beam channel, and the detection channel is arranged in quadrature with the light beam channel; the detection component comprises a laser and a particle sensor, the laser is arranged and positioned in the detection component bearing area of the base and can emit light beams to be projected in the light beam channel, and the particle sensor is correspondingly arranged at the orthogonal position of the detection channel and the light beam channel; the micro pump is supported in the micro pump bearing area of the base and covers the air guide groove; the micro pump is driven to attract and guide the gas outside the body to be quickly led into the detection channel of the base, and the micro pump irradiates the light spot to the particle sensor through the orthogonal position of the detection channel and the light beam channel by the laser, and the particle sensor detects the size and the concentration of suspended particles in the gas.

[ description of the drawings ]

Fig. 1 is a schematic view of an external appearance of a mobile device with a particle detection module.

Fig. 2A is a schematic external view of the particle detection module.

Fig. 2B is an exploded view of the related components of the particle detection module of the present disclosure.

Fig. 3 is a schematic diagram of a base of the particle detection module.

FIG. 4A is a schematic diagram of a preferred micro-pump detection implementation of the particulate detection module.

FIG. 4B is a schematic diagram of another preferred micro-pump detection implementation of the particulate detection module.

FIG. 5A is an exploded view of a preferred micropump-related member of the particulate detection module of the present disclosure from a top view.

FIG. 5B is an exploded view of a preferred micropump associated component of the particulate detection module of the present disclosure from a bottom perspective.

FIG. 6A is a schematic cross-sectional view of a preferred micropump of the present particulate detection module.

FIG. 6B is a schematic cross-sectional view of another preferred piezoelectric actuator embodiment of a preferred micropump of the particulate detection module of the present disclosure.

FIGS. 6C-6E are schematic diagrams illustrating operation of a preferred micropump of the particle detection module of FIG. 6A. FIG. 7 is an exploded view of the components associated with another preferred micropump of the present particulate detection module.

FIG. 8A is a schematic cross-sectional view of another preferred micropump of the present particulate detection module.

FIGS. 8B-8C are schematic diagrams illustrating operation of another preferred micropump of the particle detection module of FIG. 8A.

Fig. 9 is a schematic view showing the appearance of the base cover plate of the particle detection module.

[ detailed description ] of the invention

Some exemplary embodiments that exhibit the features and advantages of the present disclosure are described in detail in the following description. It will be understood that various changes can be made in the above-described embodiments without departing from the scope of the invention, and that the description and illustrations herein are to be taken in an illustrative and not a limiting sense.

Referring to fig. 1, a mobile device with a particle detection module is provided, which comprises a particle detection module 10 and a body 20, wherein the body 20 has an air inlet 20a and an air guide channel 20b, the particle detection module 10 is embedded in the body 20 and is in butt joint with the air inlet 20a and the air guide channel 20b, that is, one end of the particle detection module 10 is in butt joint with the air inlet 20a, and the other end of the particle detection module 10 is in butt joint with the air guide channel 20b, so that the gas outside the mobile device can be led into the particle detection module 10 from the air inlet 20a and then discharged outside the mobile device from the air guide channel 20 b. The mobile device may be one of a mobile phone, a tablet computer, a wearable device and a notebook computer.

Referring to fig. 2A, 2B, 3, 4A and 4B again. The particle detection module 10 includes a base 1, a detection member 2, and a micropump 3. The particle detection module 10 provided in the present invention is configured to be optimally disposed in the interior of the mobile device according to the detection component 2 and the micropump 3 assembled by the base 1, and has a length L, a width W and a height H, and is configured to be in accordance with the design of slim miniaturization, wherein the particle detection module 10 is configured to have a length L of 10-60 mm, a length L of 34-36 mm, a width W of 10-50 mm, a width W of 29-31 mm, and a height H of 1-7 mm, and a height H of 4.5-5.5 mm, so that the whole particle detection module can be assembled in the mobile device, and has a convenient implementation design.

Referring to fig. 1, 2A, 2B, 3, 4A and 4B, the base 1 has a first surface 1a and a second surface 1B opposite to each other, a detecting component carrying area 11, a micro pump carrying area 12, a detecting channel 13 and a beam channel 14 are disposed inside the base 1, wherein the micro pump carrying area 12 is disposed on the first surface 1a and has an air guiding groove 121, the detecting component carrying area 11, the detecting channel 13 and the beam channel 14 respectively penetrate through the first surface 1a and the second surface 1B, the micro pump carrying area 12 is in communication with the detecting channel 13, the detecting component carrying area 11 is in communication with the beam channel 14, the detecting channel 13 is in orthogonal arrangement with the beam channel 14, an air inlet 15 and an air outlet 16 are disposed on a side of the base 1, the air inlet 15 is in communication with the detecting channel 13, the air outlet 16 is in communication with the air guiding groove 121, the air guiding channel 20B of the body 20 is in communication with the air outlet 16 of the base 1, so that air introduced into the detecting channel 13 of the base 1 can be discharged from the air outlet 16 to the outside of the body 20B.

Referring to fig. 2A and 2B, the detecting unit 2 includes a detecting driving circuit board 21, a particle sensor 22, a laser 23 and a microprocessor 24. The particle sensor 22, the laser 23 and the microprocessor 24 are packaged on the detection driving circuit board 21, the detection driving circuit board 21 is covered on the second surface 1b of the base 1, the laser 23 is correspondingly arranged in the detection component bearing area 11 and can emit light beams to be projected in the light beam channel 14, and the particle sensor 22 is correspondingly arranged at the position of the detection channel 13 orthogonal to the light beam channel 14, so that the microprocessor 24 controls the operation of the laser 23 and the particle sensor 22, the laser 23 emits light beams to irradiate the light beam channel 14, the gas passing through the position of the detection channel 13 orthogonal to the light beam channel 14, the gas generates projection light spots to be projected on the particle sensor 22, the particle sensor 22 detects the size and the concentration of suspended particles contained in the gas and outputs detection signals, and the microprocessor 24 receives the detection signals output by the particle sensor 22 to analyze so as to output detection data. The laser 23 includes a light positioning component 231 and a laser emitting element 232, the light positioning component 231 is disposed and positioned on the detection driving circuit board 21, and the laser emitting element 232 is embedded in the light positioning component 231 and electrically connected to the detection driving circuit board 21, so as to be driven by the microprocessor 24 and emit a light beam to irradiate the light beam channel 14. Wherein the particulate sensor 22 is a PM2.5 sensor or a PM10 sensor.

With continued reference to fig. 2A and 2B, the particle detection module 10 further includes an insulating plate 5 covered on the first surface 1a of the base 1, so that the gas outside the base 1 is introduced into the detection channel 13 through the gas inlet 15 as shown in fig. 4A or 4B, passes through the gas guiding groove 121 of the micropump carrying region 12, and is discharged outside the base 1 through the gas outlet 16 to form a gas guiding path. As shown in fig. 2A, 2B and 9, the particle detection module further comprises a base cover plate 6, which is supported on the insulating plate 5 to close the first surface 1a of the base 1, so as to form an electronic interference prevention effect, and the position of the base cover plate 6 corresponding to the air inlet 15 of the base 1 is also provided with an air inlet 61 for corresponding communication, and the position of the base cover plate 6 corresponding to the air outlet 16 of the base 1 is also provided with an air outlet 62 for corresponding communication.

Referring to fig. 2A, 2B, 4A, 4B, 5A and 5B, the micropump 3 is carried in the micropump carrying region 12 of the base 1 and covers the air guiding groove 121. The micropump 3 is composed of an inflow plate 31, a resonance plate 32, a piezoelectric actuator 33, a first insulating plate 34, a conductive plate 35, and a second insulating plate 36 stacked in order. The inflow plate 31 has at least one inflow hole 31a, at least one bus bar groove 31b and a bus bar chamber 31c, the inflow hole 31a is used for introducing gas, the inflow hole 31a correspondingly penetrates the bus bar groove 31b, and the bus bar groove 31b converges into the bus bar chamber 31c, so that the gas introduced by the inflow hole 31a can be converged into the bus bar chamber 31c. In the present embodiment, the number of the inlet holes 31a and the number of the bus bar grooves 31b are the same, the number of the inlet holes 31a and the number of the bus bar grooves 31b are 4, but not limited to, the 4 inlet holes 31a respectively penetrate the 4 bus bar grooves 31b, and the 4 bus bar grooves 31b are converged into the bus bar chamber 31c.

Referring to fig. 5A, 5B and 6A, the resonant plate 32 is assembled on the inflow plate 31 by a bonding method, and the resonant plate 32 has a hollow hole 32a, a movable portion 32B and a fixed portion 32c, wherein the hollow hole 32a is located at the center of the resonant plate 32 and corresponds to the converging chamber 31c of the inflow plate 31, the movable portion 32B is disposed at the periphery of the hollow hole 32a and in a region opposite to the converging chamber 31c, and the fixed portion 32c is disposed at the outer peripheral portion of the resonant plate 32 and is adhered to the inflow plate 31.

With continued reference to fig. 5A, 5B and 6A, the piezoelectric actuator 33 includes a suspension plate 33a, an outer frame 33B, at least one bracket 33c, a piezoelectric element 33d, at least one gap 33e and a protrusion 33f. The suspension plate 33a is a square suspension plate, the suspension plate 33a is square, and compared with the design of a round suspension plate, the square suspension plate 33a has the advantage of power saving obviously, the power consumption of the capacitive load operated at the resonance frequency can be increased along with the rise of the frequency, and the relative power consumption of the square suspension plate 33a is obviously lower because the resonance frequency of the square suspension plate 33a is obviously lower than that of the round suspension plate, namely the square suspension plate 33a adopted in the scheme has the advantage and benefit of power saving; the outer frame 33b is arranged around the outer side of the suspension plate 33 a; at least one bracket 33c is connected between the suspension plate 33a and the outer frame 33b to provide a supporting force for elastically supporting the suspension plate 33 a; and a piezoelectric element 33d having a side length smaller than or equal to a side length of the suspension plate 33a, and the piezoelectric element 33d being attached to a surface of the suspension plate 33a for applying a voltage to drive the suspension plate 33a to perform flexural vibration; at least one gap 33e is formed among the suspending plate 33a, the outer frame 33b and the bracket 33c for allowing the gas to pass through; the protrusion 33f is disposed on the other surface of the suspension plate 33a opposite to the surface on which the piezoelectric element 33d is attached, and the protrusion 33f may be formed by performing an etching process on the suspension plate 33a to form a convex structure integrally protruding from the other surface opposite to the surface on which the piezoelectric element 33d is attached.

With continued reference to fig. 5A, 5B and 6A, the above-mentioned inflow plate 31, the resonant plate 32, the piezoelectric actuator 33, the first insulating plate 34, the conductive plate 35 and the second insulating plate 36 are stacked and combined in sequence, wherein a chamber space 37 is required to be formed between the suspension plate 33a and the resonant plate 32, and the chamber space 37 may be filled with a material by a gap between the resonant plate 32 and the outer frame 33B of the piezoelectric actuator 33, for example: the conductive adhesive, but not limited to, can maintain a certain depth between the resonator plate 32 and the suspension plate 33a to form the chamber space 37, so that the gas can be guided to flow more rapidly, and the contact interference between the suspension plate 33a and the resonator plate 32 is reduced because the suspension plate 33a maintains a proper distance, so that the noise generation can be reduced, and in an embodiment, the height of the outer frame 33b of the piezoelectric actuator 33 is increased to reduce the thickness of the conductive adhesive filled in the gap between the resonator plate 32 and the outer frame 33b of the piezoelectric actuator 33, so that the formed chamber space 37 is formed, so that the thickness of the filling material of the conductive adhesive can not be indirectly influenced due to the change of the hot pressing temperature and the cooling temperature during the assembly of the whole structure of the micro pump 3, and the actual space of the chamber space 37 after the molding is prevented from being influenced by the filling material of the conductive adhesive due to the expansion caused by the heat and contraction factor, but not limited thereto.

In addition, the chamber space 37 will affect the transmission effect of the micro pump 3, so it is important to maintain a fixed chamber space 37 for providing stable transmission efficiency of the micro pump 3, so as shown in fig. 6B, in other embodiments of the piezoelectric actuator 33, the suspension plate 33a may be punched and formed to extend outwards by a distance that can be adjusted by at least one bracket 33c formed between the suspension plate 33a and the outer frame 33B, so that the surface of the protrusion 33f on the suspension plate 33a is non-coplanar with the surface of the outer frame 33B, i.e. the surface of the protrusion 33f will be lower than the surface of the outer frame 33B, and a small amount of filling material is applied on the assembly surface of the outer frame 33B, for example: the piezoelectric actuator 33 is bonded to the fixing portion 32c of the resonant plate 32 by the conductive adhesive in a hot pressing manner, so that the piezoelectric actuator 33 can be assembled and combined with the resonant plate 32, and thus the required chamber space 37 can be completed by adjusting the stamping distance of the suspension plate 33a of the piezoelectric actuator 33 by directly adopting the structural improvement of the chamber space 37 formed by stamping the suspension plate 33a of the piezoelectric actuator 33, thereby effectively simplifying the structural design of the chamber space 37, simplifying the manufacturing process, shortening the manufacturing process time and the like. In addition, the first insulating sheet 34, the conductive sheet 35 and the second insulating sheet 36 are all frame-type thin sheet bodies, and are sequentially stacked on the piezoelectric actuator 33 to form the whole structure of the micropump 3.

In order to understand the output operation mode of the micro pump 3 for providing gas transmission, please refer to fig. 6C to 6E, please refer to fig. 6C first, the piezoelectric element 33d of the piezoelectric actuator 33 is deformed to drive the suspension plate 33a to displace downward after being applied with a driving voltage, at this time, the volume of the chamber space 37 is increased, a negative pressure is formed in the chamber space 37, so that the gas in the converging chamber 31C is drawn into the chamber space 37, and the resonant plate 32 is synchronously displaced downward under the influence of the resonance principle, thereby increasing the volume of the converging chamber 31C, and the relationship of the gas in the converging chamber 31C entering the chamber space 37 causes the converging chamber 31C to be in a negative pressure state, so that the gas is sucked into the converging chamber 31C through the inflow hole 31a and the converging slot 31 b; referring to fig. 6D again, the piezoelectric element 33D drives the suspension plate 33a to displace upward, compressing the chamber space 37, and the resonator plate 32 is displaced upward by the suspension plate 33a due to resonance, so that the gas in the chamber space 37 is pushed downward by the synchronization force to be transmitted downward through the gap 33e, thereby achieving the effect of transmitting the gas; finally, referring to fig. 6E, when the suspension plate 33a is driven downward, the resonant plate 32 is also driven to displace downward, and the resonant plate 32 at this time will move the gas in the compression chamber space 37 toward the gap 33E, and raise the volume in the converging chamber 31C, so that the gas can continuously converge in the converging chamber 31C through the inlet hole 31a and the converging slot 31b, and by continuously repeating the steps of providing gas transmission and actuation by the micropump 3 shown in fig. 6C to 6E, the micropump 3 can continuously guide the gas from the inlet hole 31a into the flow channel formed by the inlet plate 31 and the resonant plate 32 to generate a pressure gradient, and then the gas is transmitted downward through the gap 33E, so that the gas flows at a high speed, thereby achieving the actuation operation of transmitting the gas output by the micropump 3.

With continued reference to fig. 6A, the current inlet plate 31, the resonant plate 32, the piezoelectric actuator 33, the first insulating plate 34, the conductive plate 35 and the second insulating plate 36 of the micro pump 3 can be manufactured by micro-electromechanical planar micro-machining technology, so that the micro pump 3 is reduced in size to form a micro pump 3 of a micro-electromechanical system.

As can be seen from the above description, in the mobile device with the particle detection module provided in the present application, the micro pump 3 is driven to attract and guide the gas outside the main body 1 into the detection channel 13 of the base 1 of the particle detection module 10, the gas passes through the detection channel 13 and the beam channel 14 at the orthogonal position, and the laser 23 irradiates the light spot to the particle sensor 22, and the particle sensor 22 detects the size and concentration of the suspended particles in the gas. The mobile device with the particle detection module can form a mobile particle detection device.

Of course, in another preferred embodiment, the micro pump of the mobile device with the particle detection module may be a blower type micro pump for performing gas transmission, as shown in fig. 4B, 7 and 8A, the micro pump 4 is carried in the micro pump carrying area 12 of the base 1 and covers the gas guiding groove 121, and the micro pump 4 includes the gas spraying hole plate 41, the cavity frame 42, the actuating body 43, the insulating frame 44 and the conductive frame 45 sequentially stacked. The air hole plate 41 includes a plurality of connecting members 41a, a suspension plate 41b and a central hole 41c, wherein the suspension plate 41b can be bent and vibrated, the plurality of connecting members 41a are adjacent to the periphery of the suspension plate 41b, in this embodiment, the number of the connecting members 41a is 4, and the connecting members 41a are respectively adjacent to the 4 corners of the suspension plate 41b, but not limited thereto, and the central hole 41c is formed at the central position of the suspension plate 41 b; the cavity frame 42 is supported and overlapped on the suspension sheet 41b, the actuating body 43 is supported and overlapped on the cavity frame 42 and comprises a piezoelectric carrier plate 43a, an adjusting resonance plate 43b and a piezoelectric plate 43c, wherein the piezoelectric carrier plate 43a is supported and overlapped on the cavity frame 42, the adjusting resonance plate 43b is supported and overlapped on the piezoelectric carrier plate 43a, the piezoelectric plate 43c is supported and overlapped on the adjusting resonance plate 43b, and the piezoelectric carrier plate 43a and the adjusting resonance plate 43b are driven to perform reciprocating bending vibration by deformation after voltage application; the insulating frame 44 is supported and stacked on the piezoelectric carrier plate 43a of the actuating body 43, and the conductive frame 45 is supported and stacked on the insulating frame 44, wherein a resonant cavity 46 is formed among the actuating body 43, the cavity frame 42 and the suspension 41b, and the thickness of the adjusting resonant plate 43b is greater than the thickness of the piezoelectric carrier plate 43 a.

Referring to fig. 8A to 8C, the micro pump 4 is disposed on the micro pump carrying area 121 through a connecting piece 41a, and the air hole piece 41 is disposed at a distance from the bottom surface of the air guiding groove 121, and forms an air flow chamber 47 therebetween; referring to fig. 8B again, when a voltage is applied to the piezoelectric plate 43c of the actuating body 43, the piezoelectric plate 43c begins to deform due to the piezoelectric effect and drives the adjusting resonant plate 43B and the piezoelectric carrier plate 43a at the same time, at this time, the air hole plate 41 is driven together according to the helmholtz resonance (Helmholtz resonance) principle, so that the actuating body 43 moves upward, and the volume of the air flow chamber 47 between the air hole plate 41 and the bottom surface of the air guide groove 121 increases due to the upward displacement of the actuating body 43, the air pressure in the air flow chamber is negative, and the air outside the micro pump 4 enters the air flow chamber 47 due to the pressure gradient through the gap between the connecting piece 41a of the air hole plate 41 and the side wall of the air guide groove 121 and is concentrated; finally, referring to fig. 6C, the gas continuously enters the gas flow chamber 47 to form a positive pressure in the gas flow chamber 47, at this time, the actuating body 43 is driven by a voltage to move downward, so as to compress the volume of the gas flow chamber 47 and push the gas in the gas flow chamber 47, so that the gas is discharged from the gas outlet 16 to the outside of the base 1, and the micro pump 4 can continuously enter the gas into the gas flow chamber 47 from the gap between the connecting piece 41a of the gas jet piece 41 and the side wall of the gas guide groove 121 to form a pressure gradient by continuously repeating the steps of providing the gas transmission operation by the micro pump 4 shown in fig. 8B to 8C, so that the gas flows at a high speed, thereby achieving the operation of transmitting the gas output by the micro pump 4.

Referring to fig. 8A, the micro pump 4 may also be a mems gas pump manufactured by a mems process, wherein the gas orifice plate 41, the cavity frame 42, the actuator 43, the insulating frame 44 and the conductive frame 45 are all manufactured by a planar micro-processing technology, so as to reduce the volume of the micro pump 4.

In summary, the mobile device with the particle detection module provided in the present disclosure is achieved by embedding the thin particle detection module inside, wherein the base of the particle detection module has a detection channel and a beam channel, and the laser and the particle sensor configured to position the detection component are used to detect the size and the concentration of the suspended particles contained in the gas passing through the orthogonal position of the detection channel and the beam channel, and the micro pump is used to rapidly draw the gas outside the body of the mobile device into the detection channel to detect the concentration of the suspended particles in the gas, so that the mobile particle detection device is configured to enable a user to monitor the concentration of the suspended particles around at any time and any place, and has great industrial applicability and advancement.

[ symbolic description ]

1: base seat

1a: a first surface

1b: a second surface

10: particle detection module

11: detection part bearing area

12: micropump carrier region

121: air guide groove

13: detection channel

14: beam path

15: air inlet

16: exhaust outlet

2: detection component

20: body

20a: air inlet

20b: air guide channel

21: detection driving circuit board

22: particle sensor

23: laser device

231: optical positioning component

232: laser emitting element

24: microprocessor

3: micropump

31: inlet plate

31a: inlet orifice

31b: bus bar groove

31c: converging chamber

32: resonant sheet

32a: hollow hole

32b: a movable part

32c: fixing part

33: piezoelectric actuator

33a: suspension plate

33b: outer frame

33c: support frame

33d: piezoelectric element 33e: gap of

33f: convex part

34: first insulating sheet

35: conductive sheet

36: second insulating sheet

37: chamber space

4: micropump

41: air jet hole sheet

41a: connecting piece

41b: suspension tablet

41c: center hole

42: cavity frame

43: actuating body

43a: piezoelectric carrier plate

43b: adjusting a resonant panel

43c: piezoelectric plate

44: insulating frame

45: conductive frame

46: resonant cavity

47: airflow chamber

5: insulating plate

6: base cover plate

61: air inlet

62: exhaust outlet

H: height of (1)

L: length of

W: width of (L)

Claims (19)

1. A mobile device having a particle detection module, comprising:

a body having an air inlet;

a particle detection module, set up in this body, butt joint intercommunication this air inlet includes:

the base is provided with a first surface and a second surface, a detection part bearing area, a micro pump bearing area, a detection channel and a light beam channel are arranged in the base, the detection channel is communicated with the air inlet of the body, the micro pump bearing area is provided with an air guide groove, the micro pump bearing area is communicated with the detection channel, the detection part bearing area is communicated with the light beam channel, and the detection channel is arranged orthogonally to the light beam channel;

the detection component comprises a laser and a particle sensor, the laser is arranged and positioned in the detection component bearing area of the base and can emit light beams to be projected in the light beam channel, and the particle sensor is correspondingly arranged at the orthogonal position of the detection channel and the light beam channel; the detection component comprises a detection driving circuit board and a microprocessor, wherein the laser and the particle sensor are packaged on the detection driving circuit board, the detection driving circuit board is covered on the second surface of the base, the laser is correspondingly arranged in the detection component bearing area, the particle sensor is correspondingly arranged at the orthogonal position of the detection channel and the beam channel, the microprocessor is packaged on the detection driving circuit board so as to control the operation of the laser and the particle sensor, the laser emits light beams to irradiate the beam channel, gas passing through the orthogonal position of the detection channel and the beam channel, the gas generates projection spots to the particle sensor, the particle sensor detects the size and the concentration of suspended particles contained in the gas, and outputs detection signals, and the microprocessor receives the detection signals output by the particle sensor for analysis so as to output detection data; and

the micro pump is supported in the micro pump bearing area of the base and covers the air guide groove;

the micro pump is driven to attract and guide a gas outside the body to be quickly led into the detection channel of the base, and the gas passes through the orthogonal position of the detection channel and the beam channel, is irradiated by the laser to project light spots to the particle sensor, and the particle sensor detects the size and the concentration of suspended particles in the gas; the micro pump bearing area is arranged on the first surface, the detection part bearing area, the detection channel and the light beam channel respectively penetrate through the first surface and the second surface, and an air inlet and an air outlet are arranged on the side edge of the base, the air inlet corresponds to the air inlet of the body and is communicated with the detection channel, the air outlet is communicated with the air guide groove, the micro pump is driven to attract and guide the air outside the body to quickly enter the detection channel from the air inlet corresponding to the air inlet, and after passing through the orthogonal position of the detection channel and the light beam channel, the air enters the air guide groove and is discharged outside the base from the air outlet; the particle detection module has a length, a width and a height, wherein the length is 10-60 mm, the width is 10-50 mm, and the height is 1-7 mm.

2. The mobile device with a particle detection module of claim 1, wherein the particle sensor is a PM2.5 sensor.

3. The mobile device with particle detection module as claimed in claim 1, wherein the body has an air guide channel, the air guide channel is communicated with the exhaust outlet of the base, so that the air introduced into the detection channel of the base can be exhausted from the exhaust outlet and then exhausted out of the body through the air guide channel.

4. The mobile device of claim 1, wherein the particle detection module comprises an insulating plate covering the first surface of the base such that the gas outside the base is introduced into the detection channel through the gas inlet, passes through the gas guide groove of the micropump supporting region, and is discharged out of the base through the gas outlet to form a gas guide path.

5. The mobile device of claim 4, wherein the particle detection module comprises a base cover plate, which is supported on the insulating plate to close the first surface of the base, so as to form an anti-electronic interference effect, wherein the base cover plate also has an air inlet corresponding to the air inlet position of the base for communication, and the base cover plate also has an air outlet corresponding to the air outlet position of the base for communication.

6. The mobile device with particle detection module as claimed in claim 1, wherein the laser comprises a light positioning component and a laser emitting element, the light positioning component is positioned on the detection driving circuit board, and the laser emitting element is embedded in the light positioning component and electrically connected to the detection driving circuit board, so as to be driven under the control of the microprocessor, and emit light beams to irradiate the light beam channel.

7. The mobile device with particle detection module of claim 1, wherein the micropump comprises:

the flow inlet plate is provided with at least one flow inlet hole, at least one bus bar groove and a bus bar chamber, wherein the flow inlet hole is used for introducing the gas, the flow inlet hole correspondingly penetrates through the bus bar groove, and the bus bar groove is converged into the bus bar chamber, so that the gas introduced by the flow inlet hole can be converged into the bus bar chamber;

the resonance plate is connected to the flow inlet plate and is provided with a hollow hole, a movable part and a fixed part, wherein the hollow hole is positioned at the center of the resonance plate and corresponds to the converging chamber of the flow inlet plate, the movable part is arranged at the periphery of the hollow hole and in a region opposite to the converging chamber, and the fixed part is arranged at the peripheral part of the resonance plate and is adhered to the flow inlet plate; and

a piezoelectric actuator coupled to the resonator plate and disposed correspondingly;

when the piezoelectric actuator is driven, the gas is led in from the inlet hole of the inlet plate, collected into the converging chamber through the converging slot and then flows through the hollow hole of the resonant plate, and the piezoelectric actuator and the movable part of the resonant plate generate resonance to transmit the gas.

8. The mobile device with particle detection module of claim 7, wherein the piezoelectric actuator comprises:

a suspension plate having a square shape and being capable of bending and vibrating;

an outer frame surrounding the outer side of the suspension plate;

at least one bracket connected between the suspension plate and the outer frame to provide elastic support for the suspension plate; and

the piezoelectric element is provided with a side length which is smaller than or equal to the side length of the suspension plate, and is attached to one surface of the suspension plate and used for applying voltage to drive the suspension plate to vibrate in a bending way.

9. The mobile device with particle detection module of claim 7, wherein the micro-pump comprises a first insulating sheet, a conductive sheet and a second insulating sheet, wherein the inflow plate, the resonant sheet, the piezoelectric actuator, the first insulating sheet, the conductive sheet and the second insulating sheet are stacked and combined in sequence.

10. The mobile device of claim 8, wherein the suspension plate comprises a protrusion disposed on the other surface of the suspension plate opposite to the surface of the piezoelectric element.

11. The mobile device with particle detection module as claimed in claim 10, wherein the protrusion is a protrusion structure integrally formed on the other surface of the suspension plate opposite to the surface of the piezoelectric element by etching.

12. The mobile device with particle detection module of claim 7, wherein the piezoelectric actuator comprises:

a suspension plate having a square shape and being capable of bending and vibrating;

an outer frame surrounding the outer side of the suspension plate;

at least one bracket connected between the suspension plate and the outer frame to provide elastic support for the suspension plate, form a non-coplanar structure between one surface of the suspension plate and one surface of the outer frame, and maintain one cavity space between one surface of the suspension plate and the resonance plate; and

the piezoelectric element is provided with a side length which is smaller than or equal to the side length of the suspension plate, and is attached to one surface of the suspension plate and used for applying voltage to drive the suspension plate to vibrate in a bending way.

13. The mobile device with particle detection module of claim 1, wherein the micropump comprises:

the air hole sheet comprises a plurality of connecting pieces, a suspension sheet and a central hole, the suspension sheet can bend and vibrate, the connecting pieces are adjacent to the periphery of the suspension sheet and provide elastic support for the suspension sheet, the central hole is formed in the central position of the suspension sheet, the air hole sheet is arranged above the air guide groove of the micropump bearing area of the base through the connecting pieces, an air flow cavity is formed between the air hole sheet and the air guide groove, and at least one gap is formed between the brackets and the suspension sheet;

a cavity frame bearing and overlapping on the suspension sheet;

an actuating body, which is stacked on the cavity frame to receive voltage and generate reciprocating bending vibration;

an insulating frame, bearing and overlapping on the actuating body; and

the conducting frame is arranged on the insulating frame in a bearing and stacking mode; a resonance cavity is formed among the actuating body, the cavity frame and the suspension sheet, and the actuating body is driven to drive the air jet hole sheet to generate resonance, so that the suspension sheet of the air jet hole sheet generates reciprocating vibration displacement, and the gas enters the gas flow cavity through the at least one gap to realize the transmission flow of the gas.

14. The mobile device with particle detection module of claim 13, wherein the actuator comprises:

a piezoelectric carrier plate bearing and overlapping on the cavity frame;

the adjusting resonance plate is loaded and overlapped on the piezoelectric carrier plate; and

and the piezoelectric plate is carried and overlapped on the adjusting resonance plate so as to receive voltage and drive the piezoelectric carrier plate and the adjusting resonance plate to generate reciprocating bending vibration.

15. The mobile device of claim 1, wherein the micro-pump is a micro-pump of a micro-electromechanical system.

16. The mobile device with particle detection module of claim 1, wherein the mobile device is one of a mobile phone, a tablet computer, a wearable device, and a notebook computer.

17. The mobile device with particle detection module of claim 1, wherein the base has a length of 34-36 mm.

18. The mobile device with particle detection module of claim 1, wherein the base has a width of 29-31 mm.

19. The mobile device with particle detection module of claim 1, wherein the base has a height of 4.5-5.5 mm.