A hydrogen energy vehicle-mounted laser dust sensor

Abstract

The present invention relates to the field of laser dust sensors, and in particular to a hydrogen energy vehicle-mounted laser dust sensor, comprising: a shell, wherein an air inlet hole is provided on the right side wall of the front side of the shell, an exhaust hole is provided on the left side wall of the shell, and a main board is arranged in the shell; an exhaust component, wherein the exhaust component is arranged in the shell at a position corresponding to the exhaust hole, and the exhaust component is used to extract air in the shell to generate a negative pressure inside the shell; the present invention sets an L-shaped flip table, closes the exhaust component after the measurement is completed, and drives a motor to flip the L-shaped flip table into an inclined state to generate a slope, thereby facilitating the removal of collected dust, reducing the amount of dust in a detection chamber, and then improving the detection accuracy; and sets a filter barrel, through filtering of the filter barrel, dust in the air is concentratedly collected in the detection chamber, so as to reduce the distribution of dust to other positions inside the shell, so as to reduce the difficulty of cleaning.

Description

Technical Field

[0001] The present invention relates to the field of laser dust sensors, and in particular to a hydrogen energy vehicle-mounted laser dust sensor. Background Art

[0002] A vehicle-mounted laser dust sensor is a device used to measure the dust concentration in the air inside a vehicle. It utilizes the principle of laser scattering to accurately measure the dust concentration in the air and provide real-time data output. This sensor is usually installed inside the vehicle and helps improve the air quality inside the vehicle and ensure the health and comfort of passengers by detecting suspended particles in the air.

[0003] Its working principle is to perform air sampling by generating an internal negative pressure through a fan. When the particles in the sampled gas pass through a laser beam such as a converging beam, a light scattering phenomenon occurs. The scattered light is converted into an electrical signal (pulse) by a photoelectric converter. The larger the particle, the larger the pulse signal (peak value). The number concentration of each particle size can be obtained through the peak value and the number of pulses at this time. That is, by measuring the quantity and intensity of the scattered light, real-time test data can be obtained.

[0004] In the prior art, during the process of the laser dust sensor detecting the air inside the vehicle, the air inside the vehicle together with dust will enter the interior of the laser dust sensor. When the detection is completed, dust is likely to accumulate inside the laser dust sensor, thus easily reducing the detection accuracy.

[0005] Therefore, the present invention proposes a hydrogen energy vehicle-mounted laser dust sensor to solve the above problems. Summary of the Invention

[0006] To achieve the above object, the technical solution adopted by the present invention is: a hydrogen energy vehicle-mounted laser dust sensor, comprising:

[0007] A housing, an air inlet hole is provided on the right side wall of the front surface of the housing, an exhaust hole is provided on the left side of the housing, and a main board is arranged inside the housing;

[0008] An air extraction assembly, the air extraction assembly is arranged inside the housing corresponding to the position of the exhaust hole, and the air extraction assembly is used to extract the air inside the housing to generate a negative pressure inside the housing;

[0009] A U-shaped partition, the U-shaped partition is fixedly connected inside the housing corresponding to the position of the air inlet hole, a detection cavity is arranged inside the U-shaped partition, and a first flow groove is provided on the left side wall of the U-shaped partition;

[0010] A mounting seat, the mounting seat is fixedly connected to the inner bottom of the U-shaped partition, a laser sensor is arranged at the bottom of the front end of the mounting seat, and an arc-shaped sliding groove is provided at the bottom of the rear end of the mounting seat;

[0011] L-shaped turning table, the front end of the L-shaped turning table is rotatably connected to the inner side wall of the U-shaped partition, the top end of the rear end of the L-shaped turning table is slidably connected to the arc-shaped chute, and the outer side wall of the U-shaped partition is fixedly connected with a driving motor, and the output shaft of the driving motor is coaxially fixed with the front end of the L-shaped turning table;

[0012] Filter net barrel, the filter net barrel penetrates through the side wall of the rear end of the L-shaped turning table and is rotatably connected to the L-shaped turning table.

[0013] Preferably, it further includes:

[0014] Scraper, the scraper is fixedly connected to the side wall of the L-shaped turning table corresponding to the bottom end of the filter net barrel;

[0015] Two first arc-shaped track grooves, the two first arc-shaped track grooves are symmetrically arranged on the side wall of the U-shaped partition;

[0016] Two first rotating shafts, one ends of the two first rotating shafts are symmetrically and fixedly connected to the outer side wall of the filter net barrel respectively, and the other ends of the two first rotating shafts pass through the first arc-shaped track groove and are slidably connected to the first arc-shaped track groove;

[0017] Two gears, the two gears are respectively fixedly connected to the ends of the two first rotating shafts

[0018] Two arc-shaped racks, the two arc-shaped racks are symmetrically and fixedly connected to the two outer side walls of the U-shaped partition, and the arc-shaped racks are meshed with the gears.

[0019] Preferably, it further includes:

[0020] Several air cylinders, several of the air cylinders are fixedly connected to the side wall of the rear end of the L-shaped turning table in an array, a piston is slidably connected in the air cylinder, and an exhaust pipe is fixedly communicated with the end of the air cylinder, and the exhaust pipe extends to the side wall of the filter net barrel;

[0021] A pushing component, the pushing component is used to push the piston, so that the air cylinder sprays air on the filter net barrel to blow the dust on the outer wall of the filter net barrel and in the detection cavity out of the shell.

[0022] Preferably, the pushing component includes:

[0023] Two driving grooves, the two driving grooves are symmetrically arranged on the inner wall of the U-shaped partition, and the driving groove has a first arc-shaped guiding groove and a second arc-shaped guiding groove

[0024] Pushing plate, several pushing rods are fixedly connected to the side wall of the pushing plate in an array, the pushing rods are respectively fixedly connected with the pistons at corresponding positions, and connecting pins are symmetrically and fixedly connected to both sides of the pushing plate, and the connecting pins are slidably connected in the driving groove.

[0025] Preferably, it further includes:

[0026] Arc-shaped flipping shell, the arc-shaped flipping shell is rotatably connected to the rear side wall of the L-shaped flipping table, and several air blowing ports are provided on the inner side wall of the arc-shaped flipping shell;

[0027] The exhaust pipe is a flexible pipe, the exhaust pipe is fixedly communicated with the arc-shaped flipping shell, a first one-way valve is arranged in the exhaust pipe, the end of the air cylinder is fixedly communicated with an air inlet pipe, and a second one-way valve is arranged in the air inlet pipe;

[0028] Flipping drive assembly, the flipping drive assembly is used to drive the arc-shaped flipping shell to flip.

[0029] Preferably, the flipping drive assembly includes:

[0030] Two second arc-shaped track grooves, the two second arc-shaped track grooves are symmetrically arranged on the side wall of the U-shaped partition board;

[0031] Two second rotating shafts, the two second rotating shafts are symmetrically and fixedly connected to both sides of the arc-shaped flipping shell;

[0032] Two arc-shaped sliders, the two arc-shaped sliders are symmetrically slidably connected in the second arc-shaped track groove, and the arc-shaped slider is rotatably connected to the second rotating shaft;

[0033] Two flipping blocks, the two flipping blocks are symmetrically and fixedly connected to the ends of the second rotating shafts;

[0034] Two arc-shaped pushing blocks, the two arc-shaped pushing blocks are symmetrically and fixedly connected to the outer side wall of the U-shaped partition board;

[0035] Two torsion springs, the two torsion springs are respectively sleeved on the two second rotating shafts, and the two ends of the torsion spring are respectively fixedly connected to the arc-shaped slider and the flipping block.

[0036] Preferably, it further includes:

[0037] Ash discharge port, the ash discharge port is arranged at the bottom of the shell corresponding to the front and rear positions of the L-shaped flipping table;

[0038] L-shaped sealing plate, the L-shaped sealing plate is slidably connected in the ash discharge port, and a spring is connected between the L-shaped sealing plate and the ash discharge port.

[0039] Preferably, it further includes:

[0040] Two arc-shaped sealing plates, the two arc-shaped sealing plates are symmetrically slidably connected in the first arc-shaped track groove, and the first rotating shaft is rotatably connected to the first arc-shaped sealing plate.

[0041] Preferably, the air extraction assembly includes:

[0042] L-shaped support, the L-shaped support is fixedly connected inside the housing, and a second flow channel is provided on the side wall of the L-shaped support;

[0043] Motor, the motor is fixedly connected to the L-shaped support;

[0044] Fan, the fan is fixedly connected to the output shaft of the motor.

[0045] Preferably, it further includes:

[0046] L-shaped baffle, one end of the L-shaped baffle is fixedly connected to the outer side wall of the U-shaped baffle, and the other end is fixedly connected to the side wall of the L-shaped support.

[0047] Compared with the prior art, the present invention has the following beneficial effects:

[0048] First, by setting the L-shaped flipping table in the present invention, after the measurement is completed, the air extraction component is closed, and the L-shaped flipping table is flipped into an inclined state by the driving motor to generate a slope, which is beneficial to discharging the collected dust, reducing the amount of dust in the detection cavity, and then improving the detection accuracy. And by setting the filter net barrel, through the filtration of the filter net barrel, the dust in the air is concentrated and collected in the detection cavity to reduce the distribution of dust to other positions inside the housing and reduce the cleaning difficulty.

[0049] Second, by setting the air cylinder in the present invention, during the process of the L-shaped flipping table flipping into an inclined state, through the pushing component, the gas in the air cylinder is discharged, and the discharged gas blows on the filter net barrel. On the one hand, it is beneficial to accelerate the cleaning of the dust on the surface of the filter net barrel and improve the air flow velocity. On the other hand, it is beneficial to blow away the dust on the surface of the L-shaped flipping table, further reducing the amount of dust in the detection cavity and improving the detection accuracy.

[0050] Third, by setting the arc-shaped flipping shell in the present invention, during the process of the L-shaped flipping table flipping upward, first, through the flipping driving component, the arc-shaped flipping shell is flipped to seal the filter net barrel, and then gas is sprayed into the arc-shaped flipping shell through the exhaust pipe, and the filter net barrel is blown through the air blowing port to increase the contact area between the air flow and the filter net barrel, thereby improving the cleaning effect on the filter net barrel and reducing the cleaning dead angle; during the process of the L-shaped flipping table flipping downward, first, air is introduced through the air inlet pipe to fill the air cylinder with gas, and then through the flipping driving component, the arc-shaped flipping shell is flipped to cancel the sealing of the filter net barrel, thus avoiding the intake hole from sucking the dust back into the detection cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 Schematic diagram of the overall structure of the present invention Figure 1 ;

[0052] Figure 2 Schematic diagram of the overall structure of the present inventionFigure 2 ;

[0053] Figure 3 is an exploded view of the overall structure of the present invention;

[0054] Figure 4 is a connection schematic diagram of the U-shaped partition and the L-shaped flipping table in the present invention;

[0055] Figure 5 is Figure 4 the enlarged view at position A in

[0056] Figure 6 is a sectional view of the U-shaped partition in the present invention;

[0057] Figure 7 is the sectional view of the U-shaped partition in the present invention Figure 2 ;

[0058] Figure 8 is Figure 7 the enlarged view at position B in

[0059] Figure 9 is a connection schematic diagram of the arc-shaped flipping shell and the air cylinder in the present invention;

[0060] Figure 10 is Figure 9 the enlarged view at position C in

[0061] Figure 11 is a connection schematic diagram of the L-shaped sealing plate and the spring in the present invention.

[0062] In the figure: housing 1, air inlet hole 101, exhaust hole 102, main board 103, ash discharge port 104, U-shaped partition 2, detection cavity 201, first flow channel 202, first arc-shaped track groove 203, second arc-shaped track groove 204, L-shaped support 3, second flow channel 301, motor 4, fan 5, L-shaped baffle 6, L-shaped sealing plate 7, spring 8, mounting seat 9, arc-shaped sliding groove 901, laser sensor 10, L-shaped flipping table 11, drive motor 12, filter screen barrel 13, scraper 14, first rotating shaft 15, gear 16, arc-shaped rack 17, arc-shaped sealing plate 18, air cylinder 19, piston 20, exhaust pipe 21, intake pipe 22, drive groove 23, first arc-shaped guiding groove 2301, second arc-shaped guiding groove 2302, push plate 24, push rod 25, connecting pin 26, arc-shaped flipping shell 27, air blowing port 2701, second rotating shaft 28, arc-shaped sliding block 29, flipping block 30, arc-shaped pushing block 31, torsion spring 32. Detailed Embodiments

[0063] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and other obvious variations can be conceived by those skilled in the art.

[0064] As Figures 1 to 11 shown, a hydrogen energy vehicle-mounted laser dust sensor includes:

[0065] A housing 1, with an air inlet hole 101 opened on the right side wall of the front surface of the housing 1, an exhaust hole 102 opened on the left side wall of the housing 1, and a main board 103 arranged inside the housing 1;

[0066] An air extraction component, which is arranged inside the housing 1 corresponding to the position of the exhaust hole 102 and is used to extract the air inside the housing 1 to generate negative pressure inside the housing 1;

[0067] A U-shaped partition 2, which is fixedly connected inside the housing 1 corresponding to the position of the air inlet hole 101. A detection cavity 201 is arranged inside the U-shaped partition 2, and a first flow groove 202 is opened on the left side wall of the U-shaped partition 2;

[0068] A mounting seat 9, which is fixedly connected to the inner bottom of the U-shaped partition 2. A laser sensor 10 is arranged at the bottom of the front end of the mounting seat 9, and an arc-shaped sliding groove 901 is opened at the bottom of the rear end of the mounting seat 9;

[0069] An L-shaped flipping table 11, the front end of which is rotatably connected to the inner side wall of the U-shaped partition 2, the top end of the rear end of the L-shaped flipping table 11 is slidably connected inside the arc-shaped sliding groove 901, and a driving motor 12 is fixedly connected to the outer side wall of the U-shaped partition 2. The output shaft of the driving motor 12 is coaxially fixed to the front end of the L-shaped flipping table 11;

[0070] A filter net barrel 13, which penetrates through the rear side wall of the L-shaped flipping table 11 and is rotatably connected to the L-shaped flipping table 11;

[0071] Specifically, in the prior art, during the process of the laser dust sensor detecting the air inside the vehicle, the air inside the vehicle together with dust will enter the inside of the laser dust sensor. When the detection is completed, dust is likely to accumulate inside the laser dust sensor, thereby easily reducing the detection accuracy. This technical solution can solve the above problems. The specific operation is as follows. When it is necessary to detect the air inside the vehicle, first start the air extraction component to generate negative pressure inside the housing 1, so that the outside air enters the detection cavity 201 through the air inlet hole. Subsequently, the air first passes through the filter net barrel 13. Through the filtration of the filter net barrel 13, the dust in the air is centrally collected at a position in the detection cavity 201 far from the laser sensor 10 to reduce the distribution of dust to other positions inside the housing 1. Subsequently, the air enters the exhaust hole 102 through the first flow groove 202 and is discharged through the exhaust hole 102;

[0072] While starting the exhaust component, start the drive motor 12 to make the originally inclined L-shaped turntable 11 return to the horizontal state, so as to expand the space of the detection chamber 201, which is beneficial to the rapid circulation of air;

[0073] During the process of external air entering the detection chamber 201, the laser sensor 10 emits a light beam into the detection chamber 201, generating a light scattering phenomenon. The scattered light is converted into an electrical signal by a photoelectric converter. The larger the particle, the larger the obtained pulse signal. The number concentration of each particle size can be obtained through the peak value and the number of pulses at this time. That is, by testing the quantity and intensity of the scattered light, real-time test data can be obtained;

[0074] After the measurement is completed, turn off the exhaust component, and make the L-shaped turntable 11 turn into an inclined state through the drive motor 12 to generate a slope, which is beneficial to discharging the collected dust, reducing the dust amount in the detection chamber 201, and then improving the detection accuracy.

[0075] It should be noted that: Figure 3 The arrow in it indicates the air circulation direction.

[0076] In the specific implementation process, it also includes:

[0077] The ash discharge port 104 is opened at the bottom of the housing 1 corresponding to the front and rear positions of the L-shaped turntable 11;

[0078] The L-shaped sealing plate 7 is slidably connected in the ash discharge port 104, and a spring 8 is connected between the L-shaped sealing plate 7 and the ash discharge port 104;

[0079] Specifically, before the detection is required, first dial the L-shaped sealing plate 7 in advance to discharge the collected dust from the ash discharge port 104 to reduce the dust amount in the detection chamber 201 and improve the detection accuracy. After the cleaning is completed, release the L-shaped sealing plate 7, and under the elastic action of the spring 8, the L-shaped sealing plate 7 automatically resets to seal the ash discharge port 104.

[0080] During the implementation process, a filter plate can also be installed at the air inlet 101 to prevent foreign objects such as hair and flying flocs in the vehicle from entering the detection chamber 201 and interfering with the detection results.

[0081] In the specific implementation process, the exhaust component includes:

[0082] The L-shaped support 3 is fixedly connected in the housing 1, and a second flow groove 301 is opened on the side wall of the L-shaped support 3;

[0083] The motor 4 is fixedly connected to the L-shaped support 3;

[0084] The fan 5 is fixedly connected to the output shaft of the motor 4;

[0085] Specifically, by setting the fan 5, when detection is required, the fan 5 is rotated through the transmission of the output shaft of the motor 4, so as to generate a negative pressure inside the housing 1, enabling the outside air to enter the detection chamber 201 through the air inlet holes.

[0086] As a further embodiment of the present invention, it further includes:

[0087] An L-shaped baffle 6, one end of the L-shaped baffle 6 is fixedly connected to the outer side wall of the U-shaped baffle, and the other end is fixedly connected to the side wall of the L-shaped support 3;

[0088] Specifically, by setting the L-shaped baffle 6, the air is diverted so that the air flows along a specified trajectory.

[0089] As a further embodiment of the present invention, it further includes:

[0090] A scraper 14, the scraper 14 is fixedly connected to the side wall of the L-shaped turning table 11 corresponding to the bottom end of the filter screen barrel 13;

[0091] Two first arc-shaped track grooves 203, the two first arc-shaped track grooves 203 are symmetrically opened on the side wall of the U-shaped partition 2;

[0092] Two first rotating shafts 15, one ends of the two first rotating shafts 15 are respectively symmetrically fixedly connected to the outer side wall of the filter screen barrel 13, and the other ends of the two first rotating shafts 15 pass through the first arc-shaped track groove 203 and are slidably connected to the first arc-shaped track groove 203;

[0093] Two gears 16, the two gears 16 are respectively fixedly connected to the ends of the two first rotating shafts 15

[0094] Two arc-shaped racks 17, the two arc-shaped racks 17 are symmetrically fixedly connected to the two outer side walls of the U-shaped partition 2, and the arc-shaped rack 17 meshes with the gear 16;

[0095] Specifically, by setting the gear 16 and the arc-shaped rack 17, during the upward turning process of the L-shaped turning table 11, the gear 16 moves along the surface of the arc-shaped rack 17. Under the action of meshing, the gear 16 drives the first rotating shaft 15 to rotate, so that the filter screen barrel 13 rotates. The filter screen barrel 13 rotates past the scraper 14, and the scraper 14 cleans and dredges the dust on the surface of the filter screen barrel 13, which is beneficial to accelerating the air circulation. The dust generated by the cleaning flows into the dust discharge port 104 through the inclined L-shaped turning table 11 and is discharged.

[0096] In the specific implementation process, it further includes:

[0097] Two arc-shaped sealing plates 18 are symmetrically and slidably connected in the first arc-shaped track groove 203, and the first rotating shaft 15 is rotatably connected to the first arc-shaped sealing plate 18;

[0098] Specifically, by providing the arc-shaped sealing plate 18, the first arc-shaped track groove 203 is sealed to reduce the entry of dust into other positions inside the housing 1.

[0099] As a further embodiment of the present invention, it further includes:

[0100] Several air cylinders 19 are fixedly connected to the rear side wall of the L-shaped turning table 11 in an array. A piston 20 is slidably connected inside the air cylinder 19, and an exhaust pipe 21 is fixedly communicated with the end of the air cylinder 19. The exhaust pipe 21 extends to the side wall of the filter screen barrel 13;

[0101] A pushing assembly is used to push the piston 20 so that the air cylinder 19 sprays air onto the filter screen barrel 13 to blow the dust on the outer wall of the filter screen barrel 13 and in the detection chamber 201 out of the housing 1;

[0102] Specifically, during the process of the L-shaped turning table 11 turning into a tilted state, through the pushing assembly, the gas in the air cylinder 19 is discharged, and the discharged gas blows against the filter screen barrel 13. On the one hand, it is beneficial to accelerate the cleaning of the dust on the surface of the filter screen barrel 13 and improve the air flow rate. On the other hand, it is beneficial to blow away the dust on the surface of the L-shaped turning table 11, further reducing the amount of dust in the detection chamber 201 and improving the detection accuracy;

[0103] During the process of the L-shaped turning table 11 turning into a horizontal state, the piston 20 is pulled back to the end of the air cylinder 19 through the pushing assembly, so that the air cylinder 19 is filled with air in preparation for the next cleaning.

[0104] It should be noted that since the air in the space where the air cylinder 19 is located has been filtered by the filter screen barrel 13, it is beneficial to reduce the dust content in the air cylinder 19.

[0105] In the specific implementation process, the pushing assembly includes:

[0106] Two drive grooves 23 are symmetrically opened on the inner wall of the U-shaped partition 2. The drive groove 23 has a first arc-shaped guiding groove 2301 and a second arc-shaped guiding groove 2302

[0107] A pushing plate 24 is fixedly connected with several pushing rods 25 on its side wall in an array. The pushing rods 25 are respectively fixedly connected to the pistons 20 at corresponding positions. Two connecting pins 26 are symmetrically and fixedly connected to both sides of the pushing plate 24, and the connecting pins 26 are slidably connected in the drive grooves 23;

[0108] Specifically, by setting the driving groove 23 and the pushing plate 24, during the process of the L-shaped turning table 11 turning upward into an inclined state, the connecting pin 26 first moves along the first arc-shaped guiding groove 2301. At this time, the pushing plate 24 does not push the piston 20. Subsequently, the connecting pin 26 enters the second arc-shaped guiding groove 2302. Driven by the second arc-shaped guiding groove 2302, the pushing plate 24 pushes the piston 20 to move, and the gas in the air cylinder 19 is discharged. The discharged gas blows against the filter mesh barrel 13. On the one hand, it is beneficial to accelerate the cleaning of the dust on the surface of the filter mesh barrel 13 and improve the air circulation speed. On the other hand, it is beneficial to blow away the dust on the surface of the L-shaped turning table 11, further reduce the dust amount in the detection cavity 201, and improve the detection accuracy.

[0109] During the process of the L-shaped turning table 11 turning into a horizontal state, fill the air cylinder 19 with air according to the above operation.

[0110] It should be noted that the bottom end of the first arc-shaped guiding groove 2301 is connected to the first arc-shaped guiding groove 2301, and the top end of the first arc-shaped guiding groove 2301 is close to the side wall of the L-shaped turning table 11.

[0111] As a further implementation scheme of the present invention, it further includes:

[0112] An arc-shaped turning shell 27, which is rotatably connected to the rear end side wall of the L-shaped turning table 11, and several air blowing ports 2701 are provided on the inner side wall of the arc-shaped turning shell 27;

[0113] The exhaust pipe 21 is a flexible pipe, the exhaust pipe 21 is fixedly communicated with the arc-shaped turning shell 27, a first one-way valve is arranged in the exhaust pipe 21, an air inlet pipe 22 is fixedly communicated with the end of the air cylinder 19, and a second one-way valve is arranged in the air inlet pipe 22;

[0114] A turning driving assembly, which is used to drive the arc-shaped turning shell 27 to turn;

[0115] Specifically, during the process of the L-shaped turning table 11 turning upward, first, through the turning driving assembly, the arc-shaped turning shell 27 is turned to seal the filter mesh barrel 13. Subsequently, gas is sprayed into the arc-shaped turning shell 27 through the exhaust pipe 21, and the filter mesh barrel 13 is blown through the air blowing ports 2701 to increase the contact area between the air flow and the filter mesh barrel 13, thereby improving the cleaning effect on the filter mesh barrel 13 and reducing the cleaning dead angle;

[0116] During the process of the L-shaped turning table 11 turning downward, first, air enters through the air inlet pipe 22 to fill the air cylinder 19 with gas. Subsequently, through the turning driving assembly, the arc-shaped turning shell 27 is turned to cancel the seal of the filter mesh barrel 13, thereby avoiding the intake hole 101 from sucking the dust back into the detection cavity 201.

[0117] As a further embodiment of the present invention, the flipping drive assembly includes:

[0118] Two second arc-shaped track grooves 204, which are symmetrically formed on the side walls of the U-shaped partition plate 2;

[0119] Two second rotating shafts 28, which are symmetrically and fixedly connected to both sides of the arc-shaped flipping shell 27;

[0120] Two arc-shaped sliders 29, which are symmetrically and slidably connected in the second arc-shaped track grooves 204, and the arc-shaped sliders 29 are rotationally connected to the second rotating shafts 28;

[0121] Two flipping blocks 30, which are symmetrically and fixedly connected to the ends of the second rotating shafts 28;

[0122] Two arc-shaped pushing blocks 31, which are symmetrically and fixedly connected to the outer side walls of the U-shaped partition plate 2;

[0123] Two torsion springs 32, which are respectively sleeved on the two second rotating shafts 28, and the two ends of the torsion springs 32 are respectively fixedly connected to the arc-shaped sliders 29 and the flipping blocks 30;

[0124] Specifically, by providing the flipping blocks 30 and the arc-shaped pushing blocks 31, during the upward flipping process of the L-shaped flipping table 11, the flipping blocks 30 pass by the arc-shaped pushing blocks 31, causing the flipping blocks 30 to flip, and the torsion springs 32 generate elastic force. The flipping of the flipping blocks 30 drives the arc-shaped flipping shell 27 to rotate, so as to seal the filter net barrel 13;

[0125] During the downward flipping process of the L-shaped flipping table 11, under the elastic force of the torsion springs 32, the arc-shaped flipping shell 27 resets, canceling the seal of the filter net barrel 13.

[0126] Principle of the invention: When it is necessary to detect the air inside the vehicle, first start the air extraction assembly, so that a negative pressure is generated inside the housing 1, causing the outside air to enter the detection cavity 201 through the air inlet holes. Subsequently, the air first passes through the filter net barrel 13. Through the filtration of the filter net barrel 13, the dust in the air is centrally collected at a position in the detection cavity 201 far from the laser sensor 10, so as to reduce the distribution of dust to other positions inside the housing 1. Subsequently, the air enters the exhaust holes 102 through the first flow channel 202 and is discharged through the exhaust holes 102;

[0127] At the same time as starting the air extraction assembly, start the drive motor 12, so that the originally inclined L-shaped flipping table 11 returns to the horizontal state, so as to expand the space of the detection cavity 201, which is beneficial to the rapid circulation of air;

[0128] During the process of external air entering the detection chamber 201, a beam of light is emitted into the detection chamber 201 by the laser sensor 10, generating a light scattering phenomenon. The scattered light is converted into an electrical signal by a photoelectric converter. The larger the particle, the larger the obtained pulse signal. The number concentration of each particle size can be obtained through the peak value and the number of pulses at this time. That is, by measuring the quantity and intensity of the scattered light, real-time test data can be obtained;

[0129] After the measurement is completed, the exhaust assembly is turned off, and the L-shaped flipping table 11 is flipped into an inclined state by the driving motor 12 to generate a slope, which is conducive to discharging the collected dust, reducing the amount of dust in the detection chamber 201, and then improving the detection accuracy.

[0130] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A hydrogen energy vehicle-mounted laser dust sensor, characterized in that: include: A shell (1), wherein an air inlet hole (101) is provided on the right side wall of the front side of the shell (1), an air outlet hole (102) is provided on the left side wall of the shell (1), and a main board (103) is arranged inside the shell (1); an air extraction component, the air extraction component being arranged in the housing (1) at a position corresponding to the exhaust hole (102), the air extraction component being used to extract air in the housing (1) so as to generate a negative pressure inside the housing (1); A U-shaped partition (2), the U-shaped partition (2) being fixedly connected to the housing (1) at a position corresponding to the air inlet (101), a detection cavity (201) being provided in the U-shaped partition (2), and a first flow slot (202) being provided on the left side wall of the U-shaped partition (2); A mounting seat (9), the mounting seat (9) being fixedly connected to the inner bottom of the U-shaped partition (2), a laser sensor (10) being arranged at the front bottom of the mounting seat (9), and an arc-shaped sliding groove (901) being arranged at the rear bottom of the mounting seat (9); An L-shaped turning platform (11), wherein the front end of the L-shaped turning platform (11) is rotatably connected to the inner side wall of the U-shaped partition (2), the top end of the rear end of the L-shaped turning platform (11) is slidably connected to the arc-shaped sliding groove (901), and the outer side wall of the U-shaped partition (2) is fixedly connected to a driving motor (12), and the output shaft of the driving motor (12) is coaxially fixed with the front end of the L-shaped turning platform (11); A filter screen barrel (13), wherein the filter screen barrel (13) penetrates the rear end side wall of the L-shaped turning platform (11) and is rotatably connected to the L-shaped turning platform (11); Also includes: A scraper (14), wherein the scraper (14) is fixedly connected to the side wall of the L-shaped turning platform (11) at the bottom end corresponding to the filter screen barrel (13); Two first arc-shaped track grooves (203), the two first arc-shaped track grooves (203) are symmetrically arranged on the side wall of the U-shaped partition plate (2); Two first rotating shafts (15), one end of the two first rotating shafts (15) are respectively and symmetrically fixedly connected to the outer wall of the filter screen barrel (13), and the other end of the two first rotating shafts (15) passes through the first arc track groove (203) and is slidably connected to the first arc track groove (203); Two gears (16), the two gears (16) being fixedly connected to the ends of the two first rotating shafts (15) respectively; Two arc-shaped racks (17), the two arc-shaped racks (17) are symmetrically fixedly connected to two outer side walls of the U-shaped partition (2), and the arc-shaped racks (17) are meshed with the gear (16).

2. A hydrogen energy vehicle-mounted laser dust sensor according to claim 1, characterized in that: Also includes: A plurality of gas cylinders (19), wherein an array of the gas cylinders (19) is fixedly connected to the rear end side wall of the L-shaped turning platform (11), a piston (20) is slidably connected inside the gas cylinders (19), an exhaust pipe (21) is fixedly connected to the end of the gas cylinders (19), and the exhaust pipe (21) extends to the side wall of the filter screen barrel (13); A pushing assembly is used to push the piston (20) so that the air cylinder (19) sprays air toward the filter screen barrel (13) to blow dust on the outer wall of the filter screen barrel (13) and in the detection cavity (201) out of the housing (1).

3. A hydrogen energy vehicle-mounted laser dust sensor according to claim 2, characterized in that: The pushing component comprises: Two driving grooves (23), the two driving grooves (23) are symmetrically arranged on the inner wall of the U-shaped partition (2), and the driving grooves (23) have a first arc-shaped guiding groove (2301) and a second arc-shaped guiding groove (2302); A push plate (24), wherein a plurality of push rods (25) are fixedly connected to a side wall array of the push plate (24), wherein the push rods (25) are respectively fixedly connected to the pistons (20) at corresponding positions, and connecting pins (26) are symmetrically fixedly connected to both sides of the push plate (24), wherein the connecting pins (26) are slidably connected to the driving grooves (23); The connecting pin (26) moves along the first arc-shaped guide groove (2301), the pushing plate (24) does not push the piston 20, and the connecting pin (26) enters the second arc-shaped guide groove (2302). Driven by the second arc-shaped guide groove (2302), the pushing plate (24) pushes the piston (20) to move, and the gas in the gas cylinder (19) is discharged.

4. A hydrogen energy vehicle-mounted laser dust sensor according to claim 3, characterized in that: Also includes: An arc-shaped flip shell (27), the arc-shaped flip shell (27) being rotatably connected to the rear end side wall of the L-shaped flip platform (11), and the inner side wall of the arc-shaped flip shell (27) being provided with a plurality of blowing ports (2701); The exhaust pipe (21) is a hose, the exhaust pipe (21) is fixedly connected to the arc-shaped flip shell (27), a first one-way valve is arranged in the exhaust pipe (21), the end of the air cylinder (19) is fixedly connected to the air intake pipe (22), and a second one-way valve is arranged in the air intake pipe (22); A flip driving assembly, wherein the flip driving assembly is used to drive the arc-shaped flip shell (27) to flip.

5. A hydrogen energy vehicle-mounted laser dust sensor according to claim 4, characterized in that: The flip drive assembly comprises: Two second arc-shaped track grooves (204), the two second arc-shaped track grooves (204) are symmetrically arranged on the side wall of the U-shaped partition (2); Two second rotation shafts (28), the two second rotation shafts (28) are symmetrically fixedly connected to two sides of the arc-shaped flip shell (27); Two arc-shaped sliders (29), the two arc-shaped sliders (29) are symmetrically slidably connected in the second arc-shaped track groove (204), and the arc-shaped sliders (29) are rotatably connected to the second rotating shaft (28); Two flip blocks (30), the two flip blocks (30) are symmetrically fixedly connected to the ends of the second rotating shaft (28); Two arc-shaped pushing blocks (31), the two arc-shaped pushing blocks (31) being symmetrically fixedly connected to the outer side wall of the U-shaped partition (2); Two torsion springs (32), the two torsion springs (32) are respectively sleeved on the two second rotating shafts (28), and the two ends of the torsion springs (32) are respectively fixedly connected to the arc-shaped sliding block (29) and the turning block (30).

6. The hydrogen energy vehicle-mounted laser dust sensor according to claim 1 is characterized in that: Also includes: An ash discharge port (104), the ash discharge port (104) being opened at the bottom of the housing (1) at a front and rear position corresponding to the L-shaped turning platform (11); An L-shaped sealing plate (7), the L-shaped sealing plate (7) being slidably connected in the ash discharge port (104), and a spring (8) being connected between the L-shaped sealing plate (7) and the ash discharge port (104).

7. The hydrogen energy vehicle-mounted laser dust sensor according to claim 1 is characterized in that: Also includes: Two arc-shaped sealing plates (18), the two arc-shaped sealing plates (18) are symmetrically slidably connected in the first arc-shaped track groove (203), and the first rotating shaft (15) is rotationally connected to the first arc-shaped sealing plates (18).

8. The hydrogen energy vehicle-mounted laser dust sensor according to claim 1 is characterized in that: The exhaust assembly comprises: An L-shaped support (3), the L-shaped support (3) being fixedly connected in the housing (1), and a second flow groove (301) being formed on a side wall of the L-shaped support (3); A motor (4), wherein the motor (4) is fixedly connected to the L-shaped support (3); A fan (5), wherein the fan (5) is fixedly connected to an output shaft of the motor (4).

9. A hydrogen energy vehicle-mounted laser dust sensor according to claim 8, characterized in that: Also includes: An L-shaped baffle (6), one end of the L-shaped baffle (6) is fixedly connected to the outer side wall of the U-shaped baffle, and the other end is fixedly connected to the side wall of the L-shaped support (3).

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