阅读说明：本技术 一种检测汽车尾气和obd排放信息的集成系统 (Integrated system for detecting automobile exhaust and OBD (on-board diagnostics) emission information ) 是由 刘晓明 孟艳梅 冯玉强 于 2019-10-17 设计创作，主要内容包括：本发明公开了一种检测汽车尾气和OBD排放信息的集成系统,属于汽车诊断设备领域,其技术方案要点是包括与车载电脑电信号连接的汽车故障诊断仪、与汽车故障诊断仪电信号连接的显示器以及与汽车故障诊断仪电信号连接的透射式烟度计,所述透射式烟度计包括外壳、固定连接于外壳的光信号发生结构和光电转换结构,所述外壳内固定连接有烟道,所述光信号发生结构和光电转换结构分别位于烟道两端,所述光信号发生结构的发射端与烟道呈同轴设置,所述光电转换结构的接收端与烟道呈同轴设置,所述外壳固定连接有与烟道连通的进气管,所述外壳固定连接有两个排气管,两个所述排气管与烟道两端连通。本发明具有方便检测汽车尾气中烟度的效果。(The invention discloses an integrated system for detecting automobile exhaust and OBD emission information, which belongs to the field of automobile diagnosis equipment and is characterized by comprising an automobile fault diagnosis instrument electrically connected with an on-board computer, a display electrically connected with the automobile fault diagnosis instrument and a transmission-type smokemeter electrically connected with the automobile fault diagnosis instrument, wherein the transmission-type smokemeter comprises a shell, an optical signal generating structure and a photoelectric conversion structure which are fixedly connected with the shell, a flue is fixedly connected in the shell, the optical signal generating structure and the photoelectric conversion structure are respectively positioned at two ends of the flue, the transmitting end of the optical signal generating structure and the flue are coaxially arranged, the receiving end of the photoelectric conversion structure and the flue are coaxially arranged, the shell is fixedly connected with an air inlet pipe communicated with the flue, and the shell is fixedly connected with two exhaust pipes, and the two exhaust pipes are communicated with two ends of the flue. The invention has the effect of conveniently detecting the smoke intensity in the automobile exhaust.)

1. The utility model provides a detect integrated system of automobile exhaust and OBD emission information, includes automobile fault diagnosis appearance (100) with on-vehicle computer electrical signal connection, with display (300) of automobile fault diagnosis appearance (100) electrical signal connection and with transmission-type smoke meter (200) of automobile fault diagnosis appearance (100) electrical signal connection, its characterized in that: transmission-type smokemeter (200) includes that shell (201), fixed connection take place structure (206) and photoelectric conversion structure (207) in the light signal of shell (201), fixedly connected with flue (202) in shell (201), light signal takes place structure (206) and photoelectric conversion structure (207) and is located flue (202) both ends respectively, the transmitting terminal and flue (202) of light signal take place structure (206) are coaxial setting, the receiving terminal and flue (202) of photoelectric conversion structure (207) are coaxial setting, intake pipe (203) of shell (201) fixedly connected with and flue (202) intercommunication, two blast pipes (205) of shell (201) fixedly connected with, two blast pipe (205) and flue (202) both ends intercommunication.

2. The integrated system for detecting automobile exhaust and OBD emission information according to claim 1, wherein: two protective structure (209) of shell (201) fixedly connected with, light signal generating structure (206) and photoelectric conversion structure (207) are located protective structure (209) respectively, protective structure (209) are including safety cover (210) of seting up opening (229), opening (229) are circular and are coaxial setting with flue (202), safety cover (210) fixedly connected with intake pipe (203), the one end that shell (201) were kept away from in intake pipe (203) is connected in the gas outlet of air compressor machine.

3. The integrated system for detecting automobile exhaust and OBD emission information according to claim 2, wherein: shell (201) fixedly connected with detects first pressure sensor (213) of flue (202) internal gas pressure, safety cover (210) fixedly connected with detects second pressure sensor (214) of safety cover (210) internal gas pressure, atmospheric pressure in safety cover (210) is greater than the atmospheric pressure in flue (202).

4. The integrated system for detecting automobile exhaust and OBD emission information according to claim 3, wherein: the protection cover (210) comprises a shell (211) fixedly connected with the shell (201) and a cover body (212) rotating relative to the shell (211), the cover body (212) and the shell (211) are tightly attached, the opening (229) is coaxially formed in the cover body (212), the cover body (212) is circumferentially and fixedly connected with a plurality of first air guide plates (215) in a spiral shape towards the side wall of the flue (202), the protection cover (210) is provided with a driving structure (223) for driving the cover body (212) to rotate, and the spiral direction of the first air guide plates (215) from the circumference of the cover body (212) to the direction of the circle center is the same as the rotating direction of the cover body (212).

5. The integrated system for detecting automobile exhaust and OBD emission information according to claim 4, wherein: the cover (212) is tapered and the opening (229) is located at the small diameter end of the taper.

6. The integrated system for detecting automobile exhaust and OBD emission information according to claim 5, wherein: two holding tanks (204) of fixed connection in shell (201), hold the both ends of jar (204) equal coaxial fixed connection in flue (202), two safety cover (210) all are located and hold jar (204), two blast pipe (205) are connected respectively in two holding tanks (204).

7. The integrated system for detecting automobile exhaust and OBD emission information according to claim 6, wherein: the one end fixedly connected with circular transparent guard plate (217) that casing (211) is close to lid (212), transparent guard plate (217) and flue (202) coaxial setting, a inclosed installation cavity (218) is enclosed to transparent guard plate (217) and lid (212), light signal generation structure (206) or photoelectric conversion structure (207) are installed in installation cavity (218).

8. The integrated system for detecting automobile exhaust and OBD emission information according to claim 7, wherein: drive structure (223) include ring gear (225) of coaxial fixed connection in lid (212), three planetary gear (226) are connected in casing (211) lateral wall circumferential direction, planetary gear (226) and ring gear (225) meshing, every planetary gear (226) equal coaxial fixedly connected with driven gear (227), hold jar (204) fixedly connected with servo motor (224), the coaxial fixedly connected with of main shaft of servo motor (224) and the equal driving gear (228) of meshing of three driven gear (227).

9. The integrated system for detecting automobile exhaust and OBD emission information according to claim 8, wherein: the optical signal generating structure (206) comprises a light emitting diode (219) and a first convex lens (220), the first convex lens (220) is located between the light emitting diode (219) and the flue (202), and the distance between the first convex lens (220) and the emitting end of the light emitting diode (219) is equal to the focal length of the first convex lens (220).

10. The integrated system for detecting automobile exhaust and OBD emission information according to claim 9, wherein: the photoelectric conversion structure (207) comprises a photoelectric converter (221) and a second convex lens (222), the second convex lens (222) is located between the photoelectric converter (221) and the flue (202), and the distance between the second convex lens (222) and the receiving end of the photoelectric converter (221) is equal to the focal length of the second convex lens (222).

Technical Field

The invention relates to the technical field of automobile diagnosis equipment, in particular to an integrated system for detecting automobile exhaust and OBD (on-board diagnostics) emission information.

Background

The automobile fault diagnosis instrument is a vehicle fault self-checking terminal, and the automobile fault diagnosis instrument (also called as automobile decoder) is a portable intelligent automobile fault self-checking instrument for detecting automobile faults, and a user can use the portable intelligent automobile fault self-checking instrument to quickly read faults in an automobile electric control system, display fault information through a liquid crystal display screen and quickly find out the position and the reason of the fault. The detection process is also one of important detection items when being used as automobile exhaust emission.

The invention also discloses a Chinese patent with publication number CN206656951U, which discloses an automobile exhaust detection device, comprising a bracket erected above a lane, wherein the bracket is provided with an emitter for emitting detection light, a first reflection device and a detector, and the first reflection device is positioned between the emitter and the detector; the second reflecting device and the third reflecting device are arranged on the lane at intervals along the width direction of the lane, and the projection of the first reflecting device on the lane is positioned between the second reflecting device and the third reflecting device; the detection light is reflected to the detector through the second reflecting device, the first reflecting device and the third reflecting device in sequence.

The above prior art solutions have the following drawbacks: the engine needs to reach the moving rotating speed in the detection process, and the engine is stabilized at the rotating speed for a period of time, but the traditional detection is that the rotating speed of the engine is controlled by manually controlling an accelerator pedal, so that the detection is inconvenient.

Disclosure of Invention

The invention aims to provide an integrated system for detecting automobile exhaust and OBD (on-board diagnostics) emission information, which utilizes an automobile diagnostic instrument to control the rotating speed of an engine through a vehicle-mounted computer, thereby achieving the aim of convenient detection.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a detect integrated system of automobile exhaust and OBD emission information, includes the automobile fault diagnosis appearance with on-vehicle computer signal connection, with automobile fault diagnosis appearance signal connection's display and with automobile fault diagnosis appearance signal connection's transmission-type smokemeter, the transmission-type smokemeter includes shell, fixed connection in the light signal generating structure and the photoelectric conversion structure of shell, fixedly connected with flue in the shell, light signal generating structure and photoelectric conversion structure are located the flue both ends respectively, the transmitting terminal of light signal generating structure is coaxial setting with the flue, photoelectric conversion structure's receiving terminal is coaxial setting with the flue, the intake pipe of shell fixedly connected with and flue intercommunication, two blast pipes of shell fixedly connected with, two blast pipes and flue both ends intercommunication.

Through adopting above-mentioned technical scheme, whether detect automobile exhaust emission and reach standard, with intake pipe and vehicle vent-pipe intercommunication, start the car and then pass through the rotational speed of engine computer control automobile engine through vehicle failure diagnosis appearance, the tail gas that automobile engine produced passes through the intake pipe and gets into in the flue. The light signal generating structure emits a light beam to penetrate through the flue filled with the tail gas and then irradiate the light beam to the photoelectric conversion structure, the photoelectric conversion structure converts the light signal into an electric signal, and the photoelectric conversion structure transmits the signal to the display screen for displaying. When the exhaust gas contains more smoke, the light energy attenuation is larger when the light passes through the flue, and the electric signal converted by the photoelectric converter is weaker, so that whether the tail gas reaches the standard or not is detected. Because the rotating speed of the automobile engine is controlled by the automobile fault diagnosis instrument through the engine computer, the rotating speed of the engine is not required to be controlled in a mode of manually controlling an accelerator, and the detection is more convenient.

The invention is further configured to: two protective structure of shell fixedly connected with, light signal generating structure and photoelectric conversion structure are located protective structure respectively, protective structure is including having seted up open-ended safety cover, the opening is circularly and be coaxial setting with the flue, safety cover fixedly connected with intake pipe, the one end that the shell was kept away from to the intake pipe is connected in the gas outlet of air compressor machine.

By adopting the technical scheme, the protective cover is used for protecting the signal generation structure or the photoelectric conversion structure, and the opening is a channel for light to pass through. Compressed air is introduced into the protective cover through the air inlet pipe by utilizing the air compressor, and the compressed air in the protective cover enters the flue from the opening, so that tail gas is prevented from entering the protective cover from the opening to pollute the optical signal generating structure or the photoelectric conversion structure.

The invention is further configured to: the shell fixedly connected with detects the first pressure sensor of the air pressure in the flue, the safety cover fixedly connected with detects the second pressure sensor of the air pressure in the safety cover, the air pressure in the safety cover is greater than the air pressure in the flue.

Through adopting above-mentioned technical scheme, make the atmospheric pressure in the safety cover be greater than the atmospheric pressure in the flue, keep the air in the safety cover to flow in the flue through the opening, further prevent in tail gas gets into the safety cover, reduce the influence of the cigarette in the tail gas to signal generation structure or photoelectric conversion structure life.

The invention is further configured to: the protective cover comprises a shell fixedly connected with the shell and a cover body rotating relative to the shell, the cover body and the shell are tightly attached, the opening is coaxially formed in the cover body, a plurality of first spiral air deflectors are fixedly connected to the side wall of the cover body facing the flue in the circumferential direction, the protective cover is provided with a driving structure for driving the cover body to rotate, and the spiral direction of the first air deflectors from the periphery of the cover body to the direction of the circle center is the same as the rotating direction of the cover body.

By adopting the technical scheme, the cover body is driven to rotate by the driving structure, the cover body drives the first air deflector to rotate, the air flows from the center of the cover body to the circumferential direction under the action of the first air deflector, so that the air flowing out of the opening is attached to the cover body to flow to the circumferential direction of the cover body, the interference and the exhaust of the compressed air flowing out of the opening are reduced, and the influence of disturbed tail gas on a detection result is reduced.

The invention is further configured to: the cover body is conical, and the opening is located at the small-diameter end of the cone.

Through adopting above-mentioned technical scheme, make the lid be streamlined, reduce the windage, further reduce the interference of tail gas circulation in-process, further increase the stability of testing result.

The invention is further configured to: two holding tanks of fixed connection in the shell, the equal coaxial fixed connection of holding tank is in the both ends of flue, two the safety cover all is located holding tank, two the blast pipe is connected respectively in two holding tanks.

Through adopting above-mentioned technical scheme, make automobile exhaust get into and hold jar interior again from blast pipe discharge, utilize and hold jar installation protective structure.

The invention is further configured to: the one end fixedly connected with circular transparent guard plate of lid is close to the casing, transparent guard plate and the coaxial setting of flue, transparent guard plate and lid enclose into an inclosed installation cavity, light signal takes place the structure or photoelectric conversion structure installs in the installation cavity.

Through adopting above-mentioned technical scheme, utilize transparent guard plate protection light signal to take place structure and photoelectric conversion structure, further reduce the cigarette in the tail gas and pollute electrical element and photosensitive element, further promote the life that light signal takes place structure and photoelectric conversion structure.

The invention is further configured to: the drive structure includes that coaxial fixed connection connects in the ring gear of lid, casing lateral wall circumferential direction connects three planetary gear, planetary gear and ring gear meshing, every the equal coaxial fixedly connected with driven gear of planetary gear, hold jar fixedly connected with servo motor, servo motor's the coaxial fixedly connected with of main shaft and the equal engaged driving gear of three driven gear.

Through adopting above-mentioned technical scheme, servo motor drive driving gear rotates, and the driving gear drives three driven gear and rotates, and driven gear drives planetary gear and rotates, and planetary gear drives the ring gear and rotates, and the ring gear drives the lid and rotates to utilize planetary gear to drive and support the ring gear, and then play the purpose of supporting the lid.

The invention is further configured to: the optical signal generating structure comprises a light emitting diode and a first convex lens, the first convex lens is positioned between the light emitting diode and the flue, and the distance between the first convex lens and the emitting end of the light emitting diode is equal to the focal length of the first convex lens.

By adopting the technical scheme, the photons emitted by the light emitting diode are focused into parallel light under the action of the first convex lens.

The invention is further configured to: the photoelectric conversion structure comprises a photoelectric converter and a second convex lens, the second convex lens is positioned between the photoelectric converter and the flue, and the distance between the second convex lens and the receiving end of the photoelectric converter is equal to the focal length of the second convex lens.

By adopting the technical scheme, the received parallel light is focused on the receiving end of the electric converter, so that the light received by the electric converter is improved, and the detection accuracy is improved.

In conclusion, the invention has the following beneficial effects:

firstly, whether the exhaust emission of the automobile reaches the standard or not is detected, the air inlet pipe is communicated with the automobile exhaust pipe, the automobile is started, then the rotating speed of the automobile engine is controlled through the automobile fault diagnosis instrument through an engine computer, the tail gas generated by the automobile engine is conveyed into the transmission type smoke meter, and the data detected by the smoke meter is displayed on the display. Because the rotating speed of the automobile engine is controlled by the automobile fault diagnosis instrument through the engine computer, the rotating speed of the engine is not required to be controlled in a mode of manually controlling an accelerator, and the detection is more convenient.

And secondly, protecting the signal generating structure or the photoelectric conversion structure by using the protective cover, filling compressed air into the protective cover, enabling the air pressure in the protective cover to be greater than the air pressure in the flue, keeping the air in the protective cover flowing into the flue through the opening, preventing tail gas from entering the protective cover, and reducing the influence of smoke in the tail gas on the service life of the signal generating structure or the photoelectric conversion structure.

And thirdly, the cover body is fixedly connected with a plurality of first air deflectors in a spiral shape along the circumferential direction of the side wall of the flue, the driving structure drives the cover body to rotate, the cover body drives the first air deflectors to rotate, the air flows from the center of the cover body to the circumferential direction under the action of the first air deflectors, so that the air flowing out of the opening is attached to the cover body to flow towards the circumferential direction of the cover body, the interference of compressed air flowing out of the opening on exhaust is reduced, and the influence of disturbed tail gas on a detection result is reduced.

Drawings

FIG. 1 is a wire frame diagram of the present embodiment;

FIG. 2 is a schematic structural diagram of the transmission-type smoke meter of the present embodiment;

FIG. 3 is a sectional view of the present embodiment for showing the internal structure of the transmission-type smokemeter;

FIG. 4 is a cross-sectional view of the present embodiment for showing a shielding structure;

fig. 5 is a cross-sectional view of the present embodiment showing a photoelectric conversion structure;

fig. 6 is a schematic structural diagram for showing a driving structure in the present embodiment.

Reference numerals: 100. a vehicle fault diagnostic instrument; 200. a transmission-type smokemeter; 201. a housing; 202. a flue; 203. an air inlet pipe; 204. a holding tank; 205. an exhaust pipe; 206. an optical signal generating structure; 207. a photoelectric conversion structure; 209. a protective structure; 210. a protective cover; 211. a housing; 212. a cover body; 213. a first pressure sensor; 214. a second pressure sensor; 215. a first air deflector; 217. A transparent protection plate; 218. installing a cavity; 219. a light emitting diode; 220. a first convex lens; 221. a photoelectric converter; 222. a second convex lens; 223. a drive structure; 224. a servo motor; 225. a ring gear; 226. a planetary gear; 227. a driven gear; 228. a driving gear; 229. an opening; 230. compressing the air pipe; 300. a display.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.