Vehicle-mounted integrated sensor

Abstract

The vehicle-mounted integrated sensor comprises an AQS sensor and a main sensor, the main sensor comprises an upper cover, a lower cover and a PCBA board, the upper cover and the lower cover are fixed in a covering mode, the PCBA board is fixed between the upper cover and the lower cover, and a draught fan, a PM2.5 sensing module and a carbon dioxide concentration sensing module are integrated on the PCBA board. The lower cover is provided with an air inlet, a fan cavity communicated with the air inlet, an air outlet, a first air duct and a second air duct, the fan cavity is communicated with the air outlet through the first air duct and the second air duct, the fan is contained in the fan cavity, and the PM2.5 sensing module and the carbon dioxide concentration sensing module are arranged on the first air duct and the second air duct respectively. The AQS sensor is connected with the PCBA board of the main sensor through a signal transmission line to form signal transmission. A complicated structure designed in one sensor is omitted, an air pipe connected with a transmission air conditioning box does not need to be additionally arranged, and the layout in a vehicle is simplified. The device has the characteristics of high integration level, small size and few parts.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of vehicle-mounted sensor, concretely relates to a vehicle-mounted integrated sensor. BACKGROUND

[0002] With the deepening of the cognition of consumers to the air pollution source in the car, the health consciousness is improved significantly, therefore the car is also equipped with the related air quality sensor, and the air conditioning system, automatic driving and other modules are deeply integrated, form intelligent linkage (such as automatic switching inside and outside circulation), so that the air quality in the car cabin is excellent, and the safe and healthy travel is guaranteed.

[0003] For the vehicle-mounted air quality sensor, CN211505201U discloses an air quality tester, a wind channel body is further increased between the upper cover and the lower cover to distribute airflow, and the structure is relatively complex.AQS (air quality sensor) is an important function on the car, can detect the air quality outside the car in real time, including the turbidity, humidity and whether there is toxic gas of air.And if the sensor needs to be introduced, the current conventional method is 1, AQS sensor independent product, with AQS chip and MCU control chip inside, which increases the cost;2, the AQS sensor chip and other in-vehicle sensing modules are integrated in the same sensor, so it is necessary to design two independent fans and air ducts, and a long pipe needs to be added to introduce the air of the air conditioning box outside the car, so that the structure is more massive. UTILITY MODEL CONTENT

[0004] Therefore, the utility model provides a vehicle-mounted integrated sensor to solve the above problems.

[0005] To achieve the above purpose, the utility model provides the technical scheme as follows:

[0006] A vehicle-mounted integrated sensor, including AQS sensor and main sensor, the main sensor includes mutually cover fixed upper cover and lower cover, and the PCBA board fixed between the upper cover and the lower cover, the PCBA board is integrated with fan, PM2.5 sensing module and carbon dioxide concentration sensing module, the lower cover is provided with air inlet, fan cavity communicated with air inlet, air outlet and first air duct and second air duct communicated with fan cavity and air outlet, the fan is contained in the fan cavity, the PM2.5 sensing module and carbon dioxide concentration sensing module are respectively placed on the first air duct and the second air duct, the AQS sensor is connected with the PCBA board of the main sensor through signal transmission line to form signal transmission.

[0007] Further, the PCBA board is also integrated with temperature sensing module, the lower cover is provided with perforation and containing long groove formed in the outer surface of the lower cover and connected with the perforation, the sensing end of the temperature sensing module is bent and contained in the containing long groove through the perforation out of the lower cover.

[0008] Further, the upper cover and the lower cover are fixed by buckling.

[0009] Further, the upper cover is integrally formed with a protruding elastic protrusion, the elastic protrusion is provided with a bayonet, the side wall of the lower cover is provided with a guide groove, the guide groove is provided with a clamping joint, the elastic protrusion is inserted into the guide groove and is fixed by buckling on the clamping joint.

[0010] Further, the PCBA board is provided with an interface, the end of the signal transmission line is provided with a joint matched with the interface, and the joint is detachably connected in the interface.

[0011] Further, the outer side wall of the lower cover is provided with a plurality of buckles and positioning columns, the positioning columns are inserted into the holes of the PCBA board to realize positioning, and the outer circumferential side of the PCBA board is fixed by the plurality of buckles.

[0012] Further, the inner wall of the upper cover is provided with an elastic protruding rib, and the elastic protruding rib abuts on the PCBA board to prevent the PCBA from shaking due to the gap.

[0013] Further, the outer side surface of the upper cover is further provided with a mounting arm, and the mounting arm is provided with a mounting hole.

[0014] Further, the upper surface of the upper cover is further provided with at least two positioning convex columns.

[0015] Further, the lower surface of the lower cover is provided with a sponge filling block to eliminate the installation gap.

[0016] The technical scheme provided by the utility model has the following beneficial effects:

[0017] 1. An AQS sensor is independently designed, the AQS sensor and the main sensor are connected through a signal transmission line to realize signal transmission; in this way, a complex structure in a sensor is saved, and an air pipe connected with an air conditioner box is not needed, so that the layout in the vehicle is simplified. Meanwhile, the air inlet, the fan cavity, the air outlet, the first air duct and the second air duct are directly designed on the lower cover of the main sensor, which is more compact, effectively simplifies the structure of the main sensor, and reduces the cost; the utility model has the characteristics of high integration, small size and few parts.

[0018] 2. The PCBA board is also integrated with a temperature sensing module, a through hole is arranged on the lower cover, and a containing long groove is formed on the outer surface of the lower cover and connected with the through hole, the containing long groove extends to the air inlet, and the sensing end of the temperature sensing module is bent and contained in the containing long groove through the through hole; the sensing end of the temperature sensing module is exposed to the air inlet, so that the temperature value in the vehicle can be more accurately monitored; and the bending and containing in the containing long groove do not increase the volume of the main sensor, and the main sensor is effectively protected. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 Fig. 1 shows a structural schematic diagram of a vehicle integrated sensor in an embodiment;

[0020] Figure 2 Fig. 2 shows a structural exploded schematic diagram of an AQS sensor in an embodiment;

[0021] Figure 3 Fig. 3 shows a structural exploded schematic diagram of a main sensor in an embodiment Figure 1 ;

[0022] Figure 4 Fig. 4 shows a structural exploded schematic diagram of a main sensor in an embodiment Figure 2 ;

[0023] Figure 5 Fig. 5 shows a schematic diagram of the internal structure of a main sensor in an embodiment. DETAILED DESCRIPTION

[0024] To further illustrate the embodiments, the utility model provides drawings. These drawings are part of the disclosure of the utility model, mainly used to illustrate the embodiments, and can be combined with the related description of the specification to explain the operating principle of the embodiments. With reference to these contents, those skilled in the art should understand other possible embodiments and the advantages of the utility model. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0025] In the description of the present application, the terms "upper", "lower", "left", "right", "front", "back" and the like orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the present application.

[0026] The utility model will be further described in combination with the drawings and specific embodiments.

[0027] Reference Figures 1 to 5As shown, the vehicle-mounted integrated sensor provided by the embodiment comprises an AQS sensor 10 and a main sensor 20, the main sensor 20 comprises an upper cover 21 and a lower cover 22 fixedly covered with each other, and a PCBA board 23 fixed between the upper cover 21 and the lower cover 22, the PCBA board 23 is integrated with a fan 231, a PM2.5 sensing module 232 and a carbon dioxide concentration sensing module 233, the lower cover 22 is provided with an air inlet 221, a fan cavity 222 communicating with the air inlet 221, an air outlet 225, and a first air duct 223 and a second air duct 224 communicating the fan cavity 222 and the air outlet 225, the fan 231 is accommodated in the fan cavity 222, the PM2.5 sensing module 232 and the carbon dioxide concentration sensing module 233 are respectively arranged on the first air duct 223 and the second air duct 224, and the AQS sensor 10 is connected with the PCBA board 23 of the main sensor 20 through a signal transmission line 30 to form signal transmission.

[0028] In this way, an AQS sensor 10 is independently designed, which is installed on the air conditioner box communicating with the outside of the vehicle when used, and is used for detecting the air quality parameters outside the vehicle; and the main sensor 20 can be arranged in the vehicle to detect the environmental parameters (such as PM2.5 parameters, carbon dioxide concentration parameters, etc.) in the vehicle, the AQS sensor 10 is connected with the PCBA board 23 of the main sensor 20 through the signal transmission line 30 to realize signal transmission, so that the complex structure in one sensor is saved, and the air pipe connected with the air conditioner box for transmission is not needed, and the layout in the vehicle is simplified. At the same time, the air inlet 221, the fan cavity 222, the air outlet 225, the first air duct 223 and the second air duct 224 are directly designed on the lower cover 22, which is more compact, effectively simplifies the structure of the main sensor 20, and the cost is reduced; and has the characteristics of high integration, small size and few parts.

[0029] Specifically, referring to Figure 2As shown, the AQS sensor 10 includes an AQS upper cover 11, an AQS lower cover 12, an AQS sensing module 13, and a waterproof and breathable film 14, the AQS sensing module 13 contains an AQS chip (which is prior art and will not be described here), and a control processing module, the AQS sensing module 13 is arranged between the AQS upper cover 11 and the AQS lower cover 12, the AQS upper cover 11 and the AQS lower cover 12 are fixedly overlapped and have an AQS air inlet 15, specifically, the AQS air inlet 15 is formed on the AQS lower cover 12, and the waterproof and breathable film 14 is installed in the AQS air inlet 15; in this way, the gas passing through the air conditioner box enters through the AQS air inlet 15, the AQS chip on the AQS sensing module 13 detects the corresponding change and converts it into an electrical signal transmitted to the PCBA board 23 of the main sensor 20 for unified processing and output. Specifically, the specific structure of the AQS sensing module 13 and the types of detected parameters and detection means are all prior art and will not be described in detail here.

[0030] Referring to Figures 3 to 5 As shown, the working principle of the main sensor 20 is as follows: the fan 231 sucks external air from the air inlet 221 and divides it into the first air duct 223 and the second air duct 224, the PM2.5 sensing module 232 detects the concentration parameter of PM2.5 in the air in the first air duct 223, and the carbon dioxide concentration sensing module 233 detects the carbon dioxide concentration parameter of the air in the second air duct 224.

[0031] Specifically, the lower cover 23 further integrally has a first mounting cavity 226 for accommodating the PM2.5 sensing module 232 and a second mounting cavity 227 for accommodating the carbon dioxide concentration sensing module 233, the PM2.5 sensing module 232 is accommodated in the first mounting cavity 226, and the carbon dioxide concentration sensing module 233 is accommodated in the second mounting cavity 227.

[0032] Further, in this embodiment, the PCBA board 23 further integrates a temperature sensing module, the lower cover 22 is provided with a through hole 228 and an accommodating long groove 229 formed on the outer surface of the lower cover 22 and connected with the through hole 228, the accommodating long groove 229 extends to the air inlet 221, and the sensing end 234 of the temperature sensing module passes out of the lower cover 22 through the through hole 228 and is bent and accommodated in the accommodating long groove 229. In this way, the sensing end 234 of the temperature sensing module is exposed to the air inlet 221, the air flow at the air inlet 221 is large, the temperature sensing module senses the temperature at this position, the value is closer to the actual temperature in the vehicle, and the temperature in the vehicle can be more accurately detected; and the bending and accommodation in the accommodating long groove 229 do not increase the volume of the main sensor 20 and effectively protect the sensing end 234 of the temperature sensing module.

[0033] Specifically, the structure and detection means of the PM2.5 sensing module 232, the temperature sensing module NTC, and the carbon dioxide concentration sensing module 233 are all prior art, and the means of integrating each module on the PCBA board 23 is also prior art, which will not be described in detail here.

[0034] The PCBA board 23 is provided with an interface 235, such as a USB interface, and the end of the signal transmission line 30 is provided with a connector compatible with the interface and is detachably connected in the interface 235, so that the AQS sensor 10 and the main sensor 20 can be assembled or replaced separately, and the flexibility is better. Specifically, the interface 235 has two, one for connecting the signal transmission line 30, and the other as an output interface to connect the control system of the car.

[0035] For the installation of the PCBA board 23, it is preferred that a plurality of buckles 24 and positioning columns 28 are provided on the outer side wall of the lower cover 22, the positioning columns 28 are arranged in the holes of the PCBA board 23 to achieve positioning, and the outer circumferential side of the PCBA board 23 is fixed by the plurality of buckles 24, so that the PCBA board 23 and the lower cover 22 are stably installed, and positional deviation therebetween is not easy to occur, and the installation is more reliable.

[0036] The inner wall of the upper cover 21 is provided with an elastic rib 213, which abuts against the PCBA board 23, so that the upper cover 21 can exert an elastic pressing force downward on the PCBA board 23, so that the PCBA board 23 can stably abut against the lower cover 22, and the sealing performance of each air duct of the lower cover 22 is improved.

[0037] The upper cover 21 and the lower cover 22 are fixed by buckling; the buckling fixing by buckles saves the structure of screws and other fixing members. Specifically, in the embodiment, the upper cover 21 is integrally formed with a raised elastic protrusion 211, and the elastic protrusion 211 is provided with a buckle 212; the side wall of the lower cover 23 is provided with a guide groove 25, and the guide groove 25 is provided with a clamping connector 26, the elastic protrusion 211 is inserted into the guide groove 25, and is fixed by buckling the buckle 212 on the clamping connector 26 to achieve buckling fixing; the assembly is accurate and reliable.

[0038] The outer side surface of the upper cover 21 is also provided with mounting arms 214, which are two in number and are distributed on opposite sides; when mounted in the car, the mounting arms 214 are fixed to the external support. The mounting arms 214 are provided with mounting holes 215 for the fixing members to pass through and connect. Of course, in other embodiments, the mounting arms 214 can also be provided with other fixing structures, such as clamping connectors.

[0039] The upper surface of the upper cover 21 is further provided with two positioning convex columns 216 in cross shape, which can be inserted into the positioning holes of the external support for positioning; meanwhile, the lower surface of the lower cover 23 is provided with sponge filling blocks 27, which can fill the gap between the lower cover 23 and the external support when installed on the external support, and also play a certain sealing role.

[0040] Although the utility model is specifically shown and introduced in combination with the preferred embodiments, those skilled in the art should understand that various changes can be made to the utility model in form and details without departing from the spirit and scope of the utility model defined by the appended claims, and all are within the protection scope of the utility model.

Claims

1. An integrated vehicle sensor, characterized in that: The system includes an AQS sensor and a main sensor. The main sensor includes an upper cover and a lower cover that are fixed together, and a PCBA board fixed between the upper cover and the lower cover. The PCBA board integrates a fan, a PM2.5 sensing module, and a carbon dioxide concentration sensing module. The lower cover is provided with an air inlet, a fan cavity connected to the air inlet, an air outlet, and a first air duct and a second air duct connecting the fan cavity and the air outlet. The fan is housed in the fan cavity. The PM2.5 sensing module and the carbon dioxide concentration sensing module are respectively placed on the first air duct and the second air duct. The AQS sensor is connected to the PCBA board of the main sensor through a signal transmission line to form a signal transmission.

2. The vehicle-mounted integrated sensor according to claim 1, characterized in that: The PCBA board also integrates a temperature sensing module. The lower cover is provided with a perforation and a receiving groove formed on the outer surface of the lower cover and connected to the perforation. The receiving groove extends to the air inlet. The sensing end of the temperature sensing module passes through the perforation to the outside of the lower cover and is bent and accommodated in the receiving groove.

3. The vehicle-mounted integrated sensor according to claim 1, characterized in that: The upper and lower covers are fastened together by snap-fit ​​fasteners.

4. The vehicle-mounted integrated sensor according to claim 3, characterized in that: The upper cover is integrally formed with a raised elastic protrusion, and a snap-fit ​​is provided on the elastic protrusion; the side wall of the lower cover is provided with a guide groove, and a snap-fit ​​connector is provided in the guide groove. The elastic protrusion is inserted into the guide groove and is fastened and fixed by snap-fit ​​on the snap-fit ​​connector.

5. The vehicle-mounted integrated sensor according to claim 1, characterized in that: The PCBA board is provided with an interface, and the end of the signal transmission line is provided with a connector adapted to the interface, and is detachably connected to the interface through the connector.

6. The vehicle-mounted integrated sensor according to claim 1, characterized in that: The outer side wall of the lower cover is provided with multiple buckles and positioning posts. The positioning posts are inserted into the holes of the PCBA board to achieve positioning, and the outer periphery of the PCBA board is fastened and fixed by multiple buckles.

7. The vehicle-mounted integrated sensor according to claim 1, characterized in that: The inner wall of the top cover is provided with elastic ribs, which abut against the PCBA board.

8. The vehicle-mounted integrated sensor according to claim 1, characterized in that: The outer surface of the top cover is also provided with a mounting arm, and the mounting arm is provided with a mounting hole.

9. The vehicle-mounted integrated sensor according to claim 1, characterized in that: The upper surface of the cover also has at least two positioning protrusions.

10. The vehicle-mounted integrated sensor according to claim 1 or 9, characterized in that: The lower surface of the lower cover is provided with a sponge filling block.

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