Vehicle-mounted mobile detection system and device based on tail gas integrated analysis

Abstract

The invention discloses a vehicle-mounted mobile detection system and device based on tail gas integrated analysis, and belongs to the technical field of tail gas detection, the vehicle-mounted mobile detection system specifically comprises an integrated analysis box, an exhaust fan is embedded in the integrated analysis box, a connection combination pipeline is arranged at the bottom of the end face of the integrated analysis box, and the connection combination pipeline is connected with a tail pipe adaptive collection cylinder in a sleeving and inserting manner; through meshing transmission of the embedded worm and gear and the tooth grooves of the rotating cylinder and the linkage design of the clamping pieces of the outer locking ring, the device can automatically adapt to automobile exhaust pipes with different diameters, customized accessories are not needed, and the installation difficulty is remarkably reduced; the threaded adjusting structure of the lock sleeve and the rotating cylinder is matched with the clamping design of the anti-skid tooth groove and the lock rod, the connecting stability is ensured, meanwhile, damage to the exhaust pipe caused by excessive locking is avoided, and a diameter adjusting mechanism is self-adapted.

Description

Technical Field

[0001] The present invention relates to the technical field of exhaust gas detection, and in particular to a vehicle-mounted mobile detection system and device based on integrated exhaust gas analysis. Background Art

[0002] In the field of motor vehicle emission pollution control, the mobile monitoring system (PEMS) is the core means of real-time monitoring of vehicles' actual road emissions and has been widely used in scenarios such as emission certification, pollution tracing and carbon verification.

[0003] In the existing technology, the traditional PEMS realizes dynamic emission monitoring by integrating gas analyzers, GPS, flow meters and other components. The technical principle is based on the detection of CO, CO2, NO x Real-time detection of pollutants such as carbon monoxide and other pollutants, combined with vehicle operation data to assess actual emission levels;

[0004] At the same time, technologies such as road remote sensing detection and laboratory bench testing also constitute an important part of the emission monitoring system. However, on-board mobile detection has the advantage of directly obtaining real road emission data, making it a key technical means to meet the EU's "Euro7" standard, China's National VIb emission regulations and other policy requirements.

[0005] Traditional PEMS equipment generally exceeds a certain weight and needs to be installed on vehicles using complex tooling, making on-site deployment time-consuming and labor-intensive. It is difficult to adapt to high-frequency mobile monitoring needs. For example, the gas analysis module and sensor assembly are designed separately, which not only increases the size of the equipment but also requires additional pipeline connections, which can easily cause detection delays and data deviations. In addition, traditional PEMS relies on spectral sensors (such as FTIR and NDIR), which require a certain amount of preheating time before starting detection. They cannot capture the emission characteristics of transient conditions such as vehicle cold starts and sudden acceleration, resulting in carbon emission accounting errors.

[0006] In conjunction with the above content, it should be noted that: for example, the exhaust gas detection sensor of the on-board automatic diagnostic system disclosed in the Chinese patent application number CN2023206376855 is equipped with a metal sealing door hinged on the bottom surface of the connecting seat, and an electric telescopic rod drives the sensor body to retract into the through hole in time after monitoring, thereby forming an effective long-term protection for the sensor body;

[0007] However, due to the combined influence of factors such as high temperature in the exhaust pipe area and driving bumps, the transmission rubber or simple mechanical joints are susceptible to fluctuations in service life and locking status, resulting in abnormal connections between the detection device and the vehicle exhaust pipe, causing the detection device to produce data errors during the integrated analysis of vehicle exhaust. Summary of the Invention

[0008] The purpose of the present invention is to provide a vehicle-mounted mobile detection system and device based on integrated exhaust gas analysis to solve the problems raised.

[0009] To achieve the above objectives, the present invention provides the following technical solutions: a vehicle-mounted mobile detection device based on integrated exhaust gas analysis, comprising an integrated analysis box, an exhaust fan embedded in the integrated analysis box, a connecting assembly pipeline provided at the bottom end face of the integrated analysis box, and a tail pipe adapter collection tube connected to the connecting assembly pipeline in a sleeve-type manner;

[0010] The tail pipe is adapted to be fitted with a collection tube on one end thereof and is provided with a rotating tube on a sliding sleeve. The tail pipe is adapted to be fitted with a collection tube on one end thereof and is provided with a locking sleeve on a sliding sleeve on the other end thereof, and a locking rod is provided on the surface of the locking sleeve that is engaged with the outer peripheral wall of the rotating tube.

[0011] The tail tube adapter collection tube is provided with a sensor housing at the bottom of the middle part of the tube, and an outer locking ring close to the sensor housing is provided at the bottom of the other end of the tube adapter collection tube. Several groups of clamping pieces are provided inside the outer locking ring, and an inner locking ring that is sleeved with the tail tube adapter collection tube is provided at the end of the outer locking ring away from the sensor housing.

[0012] Furthermore, both ends of the integrated analysis box are symmetrically provided with through-flow air inlets connected to the exhaust fan, a gantry fastener is provided at the bottom of the integrated analysis box, and the connecting combined pipeline is composed of an electronic wire harness and an air pipe braided and wound together.

[0013] Furthermore, a sliding cavity is recessed on the outer wall of one end of the tail tube adapter collection tube, and the surface of the sliding cavity is arranged in a triangular structure with several groups of limiting sliding grooves. A driven rotating ring is sleeved on one end of the sliding cavity, and an adjusting screw groove is recessed on the outer peripheral wall of the tail tube adapter collection tube at the other end of the sliding cavity.

[0014] Furthermore, a collection area adapting groove adapted to the sensor housing is provided at the bottom of the middle portion of the tail pipe adapter collection tube, a collar is provided on the outer wall of the collection area adapting groove, and a plurality of groups of outer locking grooves close to the collection area adapting groove are provided at the bottom of the other end of the tail pipe adapter collection tube;

[0015] The tail pipe is adapted to be adapted to be equipped with an inner lock groove which is recessed in the inner wall of the other end of the collecting tube and is provided with an outer lock groove for grading. An embedded worm gear extending to the inside of the outer lock groove is sleeved on the top wall of the sliding cavity. Traction ropes connected to the lock sleeve and the inner lock groove are symmetrically provided on both sides of the embedded worm gear.

[0016] Furthermore, a plurality of receiving grooves are provided in a rectangular array on the outer peripheral wall of the lock sleeve, and a push ring is provided on the outer peripheral wall of the lock sleeve to slide in cooperation with the receiving groove. The bottom of one end of the push ring is rotatably hinged to the lock rod, and a lock buckle is rotatably hinged on the rod body of the lock rod.

[0017] Furthermore, several groups of anti-slip grooves are provided on the outer peripheral wall of the rotating cylinder, an inner slide is rotatably sleeved on the inner wall of the rotating cylinder, an inner sliding block that cooperates with the limiting slide groove is provided on the inner wall of the inner slide, several groups of external connection terminals are provided at the bottom of the outer wall of the sensor housing, and an inner protective shell is provided inside the sensor housing, which is spliced ​​with the inner wall of the tail pipe to adapt to the collection cylinder.

[0018] Furthermore, a gear ring is provided in the center of the outer locking ring, and support rings are provided on the inner rings of both ends of the gear ring and are connected to the inner wall of the outer locking ring. Several groups of equally spaced arc grooves are provided between the support ring and the outer locking ring.

[0019] A traction ring is provided between the support ring and the gear ring. A ring groove is recessed on the end surface of the support ring away from the gear ring. A connecting rod is slidably sleeved on the ring groove. The rod bodies at both ends of the connecting rod are sleeved with the traction ring and the clamping piece respectively.

[0020] Furthermore, several groups of equally spaced slots are provided on the inner wall of the inner locking ring, and an arc-shaped magnetic sheet is slidingly provided inside each group of slots. A magnetic slide bar connected to the inner wall of the inner locking ring is provided at the top center of the arc-shaped magnetic sheet, and columns are symmetrically provided at both ends of the magnetic slide bar. A winding roller that is sleeved on the inner wall of the inner locking ring is provided at the bottom of the end face of the column, and a miniature worm gear connected to the traction rope is provided at the edge of the winding roller.

[0021] The present invention also proposes an on-vehicle mobile detection system based on integrated exhaust gas analysis, comprising an exhaust gas analysis and monitoring platform installed inside an integrated analysis box. The exhaust gas analysis and monitoring platform is connected to a multi-source gas data acquisition module for collecting vehicle exhaust data. The collected raw data is cleaned and screened to generate a tag set, which is then sent to a gas content anomaly analysis module and an emission risk estimation module.

[0022] The gas content anomaly analysis module receives part of the data in the tag set and the data retrieved from the exhaust gas analysis and supervision platform to build a pollutant coupling comparison model, generate an anomaly signal and send it to the exhaust gas analysis and supervision platform;

[0023] The emission risk estimation module receives part of the data in the tag set, and retrieves historical data from the exhaust gas analysis and supervision platform for trend analysis, generates risk signals and sends them to the exhaust gas analysis and supervision platform.

[0024] The beneficial effects of the present invention are:

[0025] 1. The present invention realizes adaptive locking of the exhaust pipe diameter through the meshing transmission of the rotating cylinder and the embedded worm gear, which links the clamping piece of the outer locking ring to contract centripetally, and combines the magnetic attraction assistance of the arc-shaped magnetic piece of the inner locking ring to solve the problem of falling off caused by high temperature and bumps, and has an adaptive locking mechanism; the locking sleeve pushes the locking rod to engage with the anti-slip tooth groove of the rotating cylinder to form a mechanical hard lock, and the redundant locking rod is tied with Velcro to avoid vibration loosening; the traction rope links the micro worm gear to release the arc-shaped magnetic piece, which enhances impact resistance and stability, and has dual redundant limit; the simple operation process of pushing the rotating cylinder + manually adjusting the worm, combined with Velcro / tape to assist in fixing, significantly reduces the threshold for field installation, and has a quick disassembly and assembly design.

[0026] 2. The present invention embeds sensors such as quantum cascade laser spectroscopy in the sensor housing, directly contacts the exhaust flow through the microporous inner protective shell, and has a sampling frequency of ≥10Hz to avoid gas composition distortion caused by long pipeline transportation; the exhaust gas analysis and supervision platform integrates real-time exhaust gas data, vehicle operating conditions and environmental parameters, removes impurities through Kalman filtering, and constructs a "tag set" for blockchain evidence storage to support trusted analysis and data accuracy and reduce data errors; when the red code + high risk is detected, the vehicle torque is automatically limited to 15%, the OBD write permission is locked, and the maintenance work order is pushed to the owner's APP, forming a "detection-warning-disposal" closed-loop management to meet the Euro7 / National VIb regulatory requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic structural diagram of the integrated analysis box of the present invention;

[0030] Figure 3 This is a schematic structural diagram of the tail pipe adapted to the collection tube of the present invention;

[0031] Figure 4 Schematic diagram of the structure of the sliding cavity of the present invention;

[0032] Figure 5 It is a structural schematic diagram of the lock sleeve of the present invention;

[0033] Figure 6 It is a structural schematic diagram of the rotating drum of the present invention;

[0034] Figure 7This is a schematic structural diagram of the tail pipe adapter collection tube and sensor housing of the present invention;

[0035] Figure 8 Schematic diagram of the structure of the outer locking ring of the present invention;

[0036] Figure 9 Schematic diagram of the structure of the connecting rod of the present invention;

[0037] Figure 10 This is a schematic structural diagram of the inner locking ring of the present invention;

[0038] Figure 11 It is a structural schematic diagram of the winding roller of the present invention;

[0039] Figure 12 This is a flow chart of the system of the present invention.

[0040] Reference numerals: 1, integrated analysis box; 101, exhaust fan; 102, gantry fastener; 103, through-flow air inlet; 2, connecting combined pipeline; 3, tail pipe adapter collection tube; 301, collection area adapter groove; 302, adjustment screw groove; 303, traction rope; 304, sliding cavity; 305, embedded worm gear; 306, driven swivel; 307, collar; 308, outer locking groove; 309, inner locking groove; 4, locking sleeve; 401, storage slide groove; 402, push ring; 403. Locking rod; 404. Locking buckle; 5. Rotating cylinder; 501. Inner slide; 502. Inner slider; 6. Sensor housing; 601. External connection terminal; 602. Inner protective housing; 7. External locking ring; 701. Gear ring; 702. Support ring; 703. Clamping piece; 704. Ring groove; 705. Traction ring; 706. Connecting rod; 8. Inner locking ring; 801. Arc-shaped magnetic piece; 802. Winding roller; 803. Magnetic slide; 804. Column; 805. Micro worm gear. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] Example 1: Please refer to Figure 1 - Figure 11 As shown, this embodiment is a vehicle-mounted mobile detection device based on integrated exhaust gas analysis, including an integrated analysis box 1, an exhaust fan 101 is embedded in the integrated analysis box 1, a connecting combined pipeline 2 is provided at the bottom of the end face of the integrated analysis box 1, and the connecting combined pipeline 2 is plug-in connected to the tail pipe adapter collection tube 3.

[0043] The integrated analysis box 1 has symmetrically disposed air inlets 103 at both ends thereof, which are connected to the exhaust fan 101. A gantry fastener 102 is disposed at the bottom of the integrated analysis box 1. The connecting combined pipeline 2 is formed by braiding an electronic harness and an air pipe.

[0044] When it is necessary to collect and analyze data on the exhaust gas environment emitted by cars passing through the road section, the integrated analysis box 1 is assembled on the gantry of the road section traffic light or speed detection through the gantry fastener 102, and the power is taken from the gantry of the traffic light or speed detection through the power cord. The exhaust fan 101 actively extracts the air above the road section, and sucks the air around the integrated analysis box 1 through the through-flow air inlet 103, and processes it using the air analysis-related sensors inside the integrated analysis box 1.

[0045] Example 2: This example is a vehicle-mounted mobile detection device based on integrated exhaust gas analysis. According to the detection needs of the vehicle, the integrated analysis box 1 is placed in the vehicle and connected to the power interface in the vehicle through a power cord to provide power operation support for the integrated analysis box 1. The connection combination pipeline 2 can be flexibly adjusted according to the position area of ​​the integrated analysis box 1 in the vehicle. Combined with external Velcro / tape and other tools, it can be attached to the vehicle body and extended to the parking area, and the tail pipe adapter collection tube 3 is sleeved on the exhaust pipe of the detection vehicle;

[0046] The tailpipe is adapted to detect the exhaust gas of the vehicle in a targeted manner according to its driving. The collection tube 3 is adapted to collect data on the exhaust gas of the vehicle and transport the gas sample to the inside of the integrated analysis box 1 for analysis and generating results, thus realizing the analysis and processing process of the exhaust gas of the vehicle.

[0047] The installation process between the tail pipe adapter collection tube 3 and the automobile exhaust pipe is as follows: initially keep the tail pipe adapter collection tube 3 and the automobile exhaust pipe in a horizontal state, push the tail pipe adapter collection tube 3 horizontally until it is preliminarily connected with the end of the exhaust pipe;

[0048] The tail pipe is adapted to be fitted with a collection tube 3 on one end thereof and is provided with a rotating tube 5 on the surface thereof. The tail pipe is adapted to be fitted with a collection tube 3 on one end thereof and is provided with a locking sleeve 4 on the surface thereof which is movably fitted with the rotating tube 5. The surface of the locking sleeve 4 is provided with a locking rod 403 which is engaged with the outer peripheral wall of the rotating tube 5.

[0049] The rotating cylinder 5 is pushed horizontally to move along the sliding cavity 304 and the limiting sliding groove. The inner slide 501 is close to one end of the embedded worm gear 305. A tooth groove is provided in the middle of the inner wall of the rotating cylinder 5 to cooperate with the embedded worm gear 305. The embedded worm gear 305 is manually adjusted to rotate slightly to promote engagement between the two, and the rotating cylinder 5 is further pushed horizontally to make the notch at the top of the inner slide 501 slide along both sides of the embedded worm gear 305, and the rotating cylinder 5 maintains an engagement state with the embedded worm gear 305 through the tooth groove.

[0050] A sliding cavity 304 is recessed on the outer wall of the tail pipe adapter collection tube 3 at one end, and a plurality of groups of limiting sliding grooves are arranged in a triangular structure on the surface of the sliding cavity 304. A driven rotating ring 306 is sleeved on one end of the sliding cavity 304, and an adjusting screw groove 302 recessed on the outer peripheral wall of the tail pipe adapter collection tube 3 is provided at the other end of the sliding cavity 304.

[0051] A collection area adapting groove 301 adapted to the sensor housing 6 is provided at the bottom of the middle portion of the tail pipe adapting collection tube 3. A collar 307 is sleeved on the outer wall of the collection area adapting groove 301. A plurality of external locking grooves 308 are provided at the bottom of the other end of the tail pipe adapting collection tube 3, close to the collection area adapting groove 301.

[0052] An inner locking groove 309 with a grading outer locking groove 308 is recessed in the inner wall of the tail pipe adapter collection tube 3 at the other end of the tube, and an embedded worm gear 305 extending to the inside of the outer locking groove 308 is sleeved on the top cavity wall of the sliding cavity 304. The embedded worm gear 305 has symmetrical traction ropes 303 connected to the locking sleeve 4 and the inner locking groove 309 on both sides.

[0053] The outer wall of the lock sleeve 4 is provided with a plurality of receiving slots 401 in a rectangular array. The outer wall of the lock sleeve 4 is provided with a push ring 402 that slides with the receiving slots 401. The bottom of one end of the push ring 402 is rotatably hinged to the lock rod 403. The rod body of the lock rod 403 is rotatably hinged with a lock buckle 404.

[0054] The rotating lock sleeve 4 causes the lock sleeve 4 to approach one end of the rotating cylinder 5 along the adjusting screw groove 302, and the lock sleeve 4 close to the rotating cylinder 5 is rotatably sleeved with a contact ring located between several groups of lock rods 403. The contact ring is used to contact the rotating sleeve to avoid contact between the lock sleeve 4 and the rotating sleeve, which causes friction restriction of the rotating cylinder 5, and the other end of the lock sleeve 4 is rotatably sleeved with a dragging ring connected to the traction rope 303. The dragging ring is used to drag the traction rope 303 during the movement of the lock sleeve 4, thereby realizing the linked opening of the inner lock ring 8.

[0055] After the locking sleeve 4 abuts the rotating cylinder 5 through the contact ring, the rotating cylinder 5 is limited in the sliding cavity 304 area close to the embedded worm gear 305, so as to facilitate adjustment according to the diameter difference between the exhaust pipe diameter of the automobile and the tail pipe adaptation collection cylinder 3. The rotating cylinder 5 rotates along the inner slide 501, and the tooth groove of the rotating cylinder 5 engages with the embedded worm gear 305. The embedded worm gear 305 is driven to rotate. The surface of the rod body of the embedded worm gear 305 near the several groups of outer locking rings 7 is provided with special-shaped teeth that engage with the gear ring 701. As the embedded worm gear 305 rotates, the special-shaped teeth are engaged with the gear ring 701 to transmit the transmission, thereby starting the outer locking ring 7 to operate, thereby realizing the linkage operation process between the locking sleeve 4, the rotating cylinder 5 and the outer locking ring 7.

[0056] The outer wall of the rotating cylinder 5 is provided with several sets of anti-slip teeth and grooves. The inner wall of the rotating cylinder 5 is rotatably sleeved with an inner slide 501. The inner wall of the inner slide 501 is provided with an inner slider 502 that cooperates with the limiting slide groove. The rotating cylinder 5 rotates a certain number of times according to the diameter difference between the exhaust pipe and the tail pipe and the collection cylinder 3.

[0057] After the outer locking ring 7 is clamped with the exhaust pipe by the clamping piece 703, the reverse action of the force is used to prevent the rotating cylinder 5 from further rotating in the locked state, and the push ring 402 is pushed to move along the receiving slide groove 401. There is a certain misalignment between the arrangement of multiple groups of receiving slide grooves 401, so that one or more groups of locking rods 403 are always engaged with the anti-slip tooth grooves on the outside of the rotating cylinder 5.

[0058] When the push rod moves laterally toward the rotating cylinder 5, the locking rod 403 that can engage with the anti-slip groove is adjusted, and the hinge point between the locking rod 403 and the push rod is deflected and moved toward the center again, so that the bottom of the locking rod 403 that can engage with the anti-slip groove is engaged with the anti-slip groove;

[0059] At the same time, the locking rod 403 is snap-fitted with one end of the tail pipe adapter collection tube 3 through the lock buckle 404. The push rod surface may be provided with a latch structure for cooperating with the lock buckle 404 to achieve locking of both ends. The specific production design is carried out according to actual needs.

[0060] In summary, after part of the locking rod 403 is engaged with the anti-slip groove, the rotating cylinder 5 is locked in a limited position, and the excess unmatched locking rod 403 can be tied and attached to the outside of the rotating cylinder 5 by Velcro / tape to prevent it from moving around.

[0061] A sensor housing 6 is sleeved on the bottom of the middle part of the tail pipe adapter collection tube 3, and an outer locking ring 7 close to the sensor housing 6 is sleeved on the bottom of the other end of the tail pipe adapter collection tube 3. Several groups of clamping pieces 703 are arranged inside the outer locking ring 7, and an inner locking ring 8 sleeved on the tail pipe adapter collection tube 3 is provided at the end of the outer locking ring 7 away from the sensor housing 6.

[0062] Several groups of external connection terminals 601 are provided at the bottom of the outer wall of the sensor shell 6, and an inner protective shell 602 is provided inside the sensor shell 6, which is spliced ​​with the inner wall of the tail pipe matching collection tube 3. An adaptive sensor unit is installed inside the sensor shell 6 according to the needs of exhaust gas detection, and is embedded between the sensor shell 6 and the inner protective shell 602, so that the exhaust gas inside the exhaust pipe can be collected at the first time when passing through the inner protective shell 602 area. Several micropores are provided on the surface of the inner protective shell 602, and the external connection terminals 601 are connected to the connecting combination pipeline 2.

[0063] Several groups of equally spaced slots are provided on the inner wall of the inner locking ring 8, and an arc-shaped magnetic piece 801 is slidingly provided inside each group of slots. A magnetic slide 803 connected to the inner wall of the inner locking ring 8 is provided at the top center of the arc-shaped magnetic piece 801, and columns 804 are symmetrically provided at both ends of the magnetic slide 803. A winding roller 802 that is sleeved on the inner wall of the inner locking ring 8 is provided at the bottom of the end face of the column 804, and a miniature worm gear 805 connected to the traction rope 303 is provided at the edge of the winding roller 802.

[0064] The traction rope 303 is stretched as the lock sleeve 4 moves, and the traction rope 303 is connected to the micro worm gear 805. As the traction rope 303 stretches and moves, the micro worm gear 805 is driven to rotate. It should be noted that the rope body in the connection area between the traction rope 303 and the micro worm gear 805 is provided with a metal tooth part, or the top of the micro worm gear 805 is provided with a turntable part that is connected to the traction rope 303, forming a transmission relationship, which is not limited to this;

[0065] The micro worm gear 805 drives the winding roller 802 to rotate. A replaceable metal spring is set on the internal shaft of the winding roller 802 to facilitate the rotation and reset of the winding roller 802. A thin rope connected to the column 804 is wrapped around the surface of the winding roller 802 to pull the column 804 down. The arc-shaped magnetic piece 801 slides down along the axis of the magnetic slide bar 803, and the arc-shaped magnetic piece 801 contacts the exhaust pipe, and contacts with the surface of the exhaust pipe to generate magnetic attraction limit. A metal spring accessory with a reset structure is set at the end of the traction rope 303.

[0066] A gear ring 701 is provided in the center of the inner part of the outer locking ring 7, and support rings 702 which are connected to the inner wall of the outer locking ring 7 are provided on the inner rings of the two ends of the gear ring 701. Several groups of arc grooves with equal spacing are provided between the support ring 702 and the outer locking ring 7, and a traction ring 705 is provided between the support ring 702 and the gear ring 701. A ring groove 704 is recessed on the end surface of the support ring 702 away from the gear ring 701, and a connecting rod 706 is slidably connected to the ring groove 704. The rod bodies at both ends of the connecting rod 706 are respectively connected to the traction ring 705 and the clamping piece 703.

[0067] The embedded worm gear 305 drives the gear ring 701 to rotate. The gear ring 701 is connected to the traction ring 705 and drives the traction ring 705 to rotate a certain angle along the support ring 702. During the rotation of the traction ring 705, the top end of the connecting rod 706 is driven to deflect and move, forming a moving trajectory.

[0068] A short groove is provided in the middle of the connecting rod 706, which is adapted to the annular groove 704. A stopper bolt is provided inside the short groove and is slidably sleeved with the annular groove 704. When the top of the connecting rod 706 moves along the track, the stopper bolt is used as the central axis for traction deflection, causing the bottom of the connecting rod 706 to rotate along a certain track, thereby driving the clamping piece 703 to move closer to the center.

[0069] The clamping piece 703 and the connecting rod 706 are fitted with a sleeve or hinge connection, so that the clamping piece 703 contacts the surface of the exhaust pipe for adaptation and fit. With the simultaneous cooperation of multiple groups of clamping pieces 703, the exhaust pipe is clamped and is fixedly limited by the rotating cylinder 5 to keep the tail pipe adapter collection cylinder 3 and the exhaust pipe locked in a limited connection.

[0070] Example 3: Please refer to Figure 12 As shown, this embodiment is a vehicle-mounted mobile detection system based on integrated exhaust gas analysis, including an exhaust gas analysis and monitoring platform installed inside an integrated analysis box 1, and the exhaust gas analysis and monitoring platform is connected to a multi-source gas data acquisition module for collecting automobile exhaust data;

[0071] The multi-source gas data acquisition module collects the concentrations of CO, CO2, NO, C2H8 and opaque smoke in the exhaust gas in real time through the quantum cascade laser spectroscopy (QCLAS) sensor and TDLAS remote sensing module built into the through-flow inlet 103 or the sensor housing 6, but is not limited thereto, with a sampling frequency of ≥10Hz and an accuracy of ppb level;

[0072] The integrated analysis box 1 is electrically connected to the interior of the vehicle through a wiring harness and can obtain dynamic parameters such as engine speed, vehicle speed, fuel consumption, fault codes, etc. through the OBD-Ⅱ interface. It also simultaneously integrates the longitude, latitude, altitude and driving trajectory of Beidou / GPS positioning, as well as ambient temperature and humidity (-10 to 45°C, accuracy of ±0.5°C), atmospheric pressure (80 to 116kPa) and meteorological data;

[0073] Specific data is actually obtained based on the collection environment or historical data, but is not limited to this. It is used for emission data correction. In addition, if the vehicle model has an on-board acceleration sensor and gyroscope, it can identify transient operating conditions such as cold start, rapid acceleration, and climbing, and generate a matching emission characteristic curve for high-precision matching of the current environment with the environment where historical data was collected, thereby improving data matching and analysis result accuracy. The data collected by the multi-source gas data acquisition module according to the timestamp progress is aggregated and processed and marked as raw data;

[0074] The collected raw data is filtered through Kalman filtering to remove abnormal data such as vibration and electromagnetic interference, and then classified and labeled according to the timestamp progress to generate exhaust gas concentration parameters and operating condition data. After labeling, the exhaust gas concentration parameter set and operating condition data set are constructed;

[0075] The original data is stored based on the blockchain hash value algorithm to achieve encryption and storage of the original data, so that it can be called as historical data later.

[0076] The gas content anomaly analysis module receives a concentration parameter set and extracts real-time exhaust pollutant data, including CO, CO2, NO, C3H8 concentrations and smoke opacity, from the concentration parameter set. It further eliminates invalid data generated during vehicle cold starts (the first 3 minutes) and sensor warm-up (≤ 5 seconds). It then constructs a node cycle based on the timestamp schedule, averaging the data within each node to obtain valid data.

[0077] The engine speed and load in the OBD data are synchronously correlated with the slope and altitude in the positioning information to correct the impact of environmental factors on emissions. For example, for every 1000 meters increase in altitude, the NO concentration is compensated by +5%. In this way, the emission upper limit values ​​of the matching data segment in the historical data are retrieved from the exhaust gas analysis and supervision platform. The emission upper limit values ​​include the National VIb limit (0.06g / km), the CO / CO2 threshold (0.05), the C3H8 concentration threshold (80ppm), and the opaque smoke threshold (3%). A pollutant coupling comparison model is constructed:

[0078] When the NO concentration is greater than the National VI b limit and the CO / CO2 ratio is greater than the CO / CO2 threshold, it is judged as incomplete combustion;

[0079] When the C3H8 concentration is greater than the C3H8 concentration threshold, and the opaque smoke density is greater than the opaque smoke density threshold, it is marked as a fuel leakage risk;

[0080] Construct a minute-level abnormal feature table, including the type of pollutant exceeding the standard (such as NO continuously exceeding the standard), the duration of the exceedance (such as exceeding the standard for 5 consecutive minutes), and the associated operating conditions (rapid acceleration frequency > 10 times / 10 minutes). Real-time data is compared with the emission limit value. When the emission limit value exceeds 10%, preliminary screening is initiated, generating a level 1 abnormal signal and a yellow warning code;

[0081] More than 20% entered in-depth analysis, secondary abnormal signals and red warning codes.

[0082] The emission risk estimation module receives a set of exhaust gas concentration parameters and operating condition data, filters the data from the last 30 minutes of historical emission data, driving trajectories (including identification of congested road sections), and meteorological data (temperature and humidity), and normalizes the data to the [0, 1] range to eliminate dimensionality effects. It then extracts feature vectors, including emission factors (e.g., CO2 emission factor = fuel consumption × 1.98), operating condition characteristics (idling percentage, average vehicle speed), and environmental factors (for every 10°C decrease in temperature, NO emissions increase by 8%).

[0083] Retrieve historical data from the exhaust gas analysis and supervision platform that has similar interference to the collected data working conditions for trend analysis. Construct a curve chart using several data points in the historical data combined with the timestamp progress. Compare the set curve generated by the retrieved data within 30 minutes with the historical data and the historical curve. Generate a risk annotation data table based on the comparison data constructed by the exhaust gas analysis and supervision platform based on the analysis of previous data. A predicted value exceeding the limit by 20% is considered low risk, exceeding 50% is considered medium risk, and exceeding 80% is considered high risk.

[0084] According to the comparison results of the collective curve and the historical curve:

[0085] If the predicted value exceeds the limit by 20%, a blue prompt code will be generated;

[0086] If the predicted value exceeds the limit by 50%, an orange alarm code is generated;

[0087] If the predicted value exceeds the limit by 80%, a red alarm code is generated.

[0088] The exhaust gas analysis and supervision platform receives abnormal signals (yellow warning code / red warning code) and risk signals (blue prompt code / orange alarm code / red alarm code) in real time, and establishes a signal priority queue: Level 2 abnormal signal > high risk > Level 1 abnormal signal > medium risk > low risk;

[0089] The emission upper limit value is called to verify the compliance of the signal. If a vehicle in Beijing triggers a NOx level 2 abnormal signal, the exhaust gas analysis and supervision platform will automatically match the Beijing landmark NOx limit of 0.048g / km for secondary verification;

[0090] The exhaust gas analysis and supervision platform follows these steps after receiving abnormal and risk signals:

[0091] Level 1 abnormal signal and yellow warning code + low / medium risk:

[0092] S1. Push text alerts to the vehicle terminal, such as "CO is slightly above the standard, it is recommended to check the air filter";

[0093] S2. The mobile APP generates an emission abnormality analysis report, including the time period when the emission exceeds the standard and the possible reasons.

[0094] Level 2 abnormal signal and red warning code + high risk:

[0095] S3. Immediately upload the exceeding data to the regulatory platform, along with the original data of the blockchain evidence hash value;

[0096] S4: Link the vehicle system to limit power output, reduce torque by 15%, and lock the OBD interface write permission;

[0097] S5. Automatically send maintenance work orders to the car owner's APP, along with the location of nearby 4S stores with emission control qualifications.

[0098] In combination with Example 1, Example 2 and Example 3, it can be seen that the device can automatically adapt to automobile exhaust pipes of different diameters through the meshing transmission of the embedded worm gear 305 and the rotating cylinder 5, combined with the linkage design of the clamping piece 703 of the outer locking ring 7, without the need for customized accessories, which significantly reduces the difficulty of installation; the threaded adjustment structure of the locking sleeve 4 and the rotating cylinder 5, combined with the clamping design of the anti-slip tooth groove and the locking rod 403, ensures the stability of the connection, while avoiding damage to the exhaust pipe due to excessive tightening, and has an adaptive diameter adjustment mechanism.

[0099] Through the embedded quantum cascade laser spectrometer and other sensors in the sensor housing 6, the exhaust gas is directly contacted through the microporous inner protective shell, with a sampling frequency of ≥10Hz, to avoid gas composition distortion caused by long pipeline transportation; the exhaust gas analysis and supervision platform integrates real-time exhaust gas data, vehicle operating conditions and environmental parameters, removes impurities through Kalman filtering, and constructs a "tag set" of blockchain evidence to support trusted analysis; when the red code + high risk is detected, the vehicle torque is automatically limited to 15%, the OBD write permission is locked, and the maintenance work order is pushed to the owner's APP, forming a "detection-warning-disposal" closed-loop management to meet the Euro7 / National VIb regulatory requirements.

[0100] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A vehicle-mounted mobile detection device based on integrated exhaust gas analysis, comprising an integrated analysis box (1), characterized in that: An exhaust fan (101) is embedded in the integrated analysis box (1), and a connecting combined pipeline (2) is provided at the bottom of the end surface of the integrated analysis box (1), and the connecting combined pipeline (2) is connected to a tail pipe adapter collection tube (3) in a sleeve-type manner; The tail pipe is adapted to be fitted with a collection tube (3) on one end thereof and is provided with a rotating tube (5) in a sliding sleeve manner. The tail pipe is adapted to be fitted with a collection tube (3) on one end thereof and is provided with a locking sleeve (4) that movably cooperates with the rotating tube (5). The surface of the locking sleeve (4) is provided with a locking rod (403) that is engaged with the outer peripheral wall of the rotating tube (5). The bottom of the middle part of the tail tube adapter collection tube (3) is sleeved with a sensor housing (6), the bottom of the other end of the tail tube adapter collection tube (3) is sleeved with an outer locking ring (7) close to the sensor housing (6), a plurality of groups of clamping pieces (703) are arranged inside the outer locking ring (7), and an inner locking ring (8) sleeved with the tail tube adapter collection tube (3) is arranged at one end of the outer locking ring (7) away from the sensor housing (6).

2. The vehicle-mounted mobile detection device based on exhaust gas integrated analysis according to claim 1, characterized in that: Both ends of the integrated analysis box (1) are symmetrically provided with through-flow air inlets (103) connected to the exhaust fan (101); a gantry fastener (102) is provided at the bottom of the integrated analysis box (1); and the connecting combined pipeline (2) is formed by braiding and winding an electronic wire harness and an air delivery pipe.

3. The vehicle-mounted movement detection device based on exhaust gas integrated analysis according to claim 1, characterized in that: A sliding cavity (304) is recessed on the outer wall of one end of the tail tube adapter collection tube (3); a surface of the sliding cavity (304) is provided with a plurality of groups of limiting sliding grooves arranged in a triangular structure; a driven rotating ring (306) is sleeved on one end of the sliding cavity (304); and an adjusting screw groove (302) is recessed on the outer peripheral wall of the tail tube adapter collection tube (3) at the other end of the sliding cavity (304).

4. The vehicle-mounted movement detection device based on exhaust gas integrated analysis according to claim 3 is characterized in that: The bottom of the middle part of the tail pipe adapter collection tube (3) is provided with a collection area adapter groove (301) adapted to the sensor housing (6); a collar (307) is sleeved on the outer wall of the collection area adapter groove (301); and the bottom of the other end of the tail pipe adapter collection tube (3) is provided with a plurality of groups of outer locking grooves (308) close to the collection area adapter groove (301); The tail tube is adapted to be adapted to be fitted with a collection tube (3) at the other end thereof, and an inner locking groove (309) is recessed in the inner wall of the tube for testing an outer locking groove (308). An embedded worm gear (305) extending to the inside of the outer locking groove (308) is sleeved on the top wall of the sliding cavity (304). Traction ropes (303) connected to the locking sleeve (4) and the inner locking groove (309) are symmetrically arranged on both sides of the embedded worm gear (305).

5. The vehicle-mounted mobile detection device based on exhaust gas integrated analysis according to claim 1, characterized in that: The outer wall of the lock sleeve (4) is provided with a plurality of receiving grooves (401) in a rectangular array, and the outer wall of the lock sleeve (4) is provided with a push ring (402) that slides with the receiving grooves (401). The bottom of one end of the push ring (402) is rotatably hinged to the lock rod (403), and the rod body of the lock rod (403) is rotatably hinged with a lock buckle (404).

6. The vehicle-mounted movement detection device based on exhaust gas integrated analysis according to claim 4 is characterized in that: The outer peripheral wall of the rotating cylinder (5) is provided with a plurality of groups of anti-slip tooth grooves, the inner wall of the rotating cylinder (5) is rotatably sleeved with an inner slide (501), the inner wall of the inner slide (501) is provided with an inner slider (502) that cooperates with the limiting slide groove, the bottom of the outer wall of the sensor housing (6) is provided with a plurality of groups of external connection terminals (601), and the interior of the sensor housing (6) is provided with an inner protective shell (602) spliced ​​with the inner wall of the tail pipe matching collection cylinder (3).

7. The vehicle-mounted movement detection device based on exhaust gas integrated analysis according to claim 1 is characterized in that: The inner center of the outer locking ring (7) is provided with a toothed ring (701), and the inner rings of both ends of the toothed ring (701) are provided with support rings (702) that are connected to the inner wall of the outer locking ring (7), and a plurality of groups of equally spaced arc grooves are provided between the support ring (702) and the outer locking ring (7); A traction ring (705) is provided between the support ring (702) and the gear ring (701); a ring groove (704) is provided on the end surface of the support ring (702) away from the gear ring (701); a connecting rod (706) is slidably sleeved in the ring groove (704); and the rod bodies at both ends of the connecting rod (706) are sleeved with the traction ring (705) and the clamping piece (703) respectively.

8. The vehicle-mounted movement detection device based on exhaust gas integrated analysis according to claim 4 is characterized in that: The inner wall of the inner locking ring (8) is provided with a plurality of groups of slots at equal intervals, and an arc-shaped magnetic sheet (801) is slidingly provided inside each group of slots. A magnetic slide bar (803) connected to the inner wall of the inner locking ring (8) is provided at the top center of the arc-shaped magnetic sheet (801), and columns (804) are symmetrically provided at both ends of the magnetic slide bar (803). A winding roller (802) sleeved with the inner wall of the inner locking ring (8) is provided at the bottom of the end face of the column (804), and a micro worm gear (805) connected to the traction rope (303) is provided at the edge of the winding roller (802).

9. A vehicle-mounted movement detection system based on integrated exhaust gas analysis, used in the vehicle-mounted movement detection device based on integrated exhaust gas analysis according to any one of claims 1 to 8, characterized in that: The system comprises an exhaust gas analysis and monitoring platform installed inside an integrated analysis box (1), the exhaust gas analysis and monitoring platform being connected to a multi-source gas data acquisition module for collecting automobile exhaust data, removing impurities and screening the collected raw data, generating a tag set, and sending the tag set to a gas content anomaly analysis module and an emission risk estimation module; The gas content anomaly analysis module receives part of the data in the tag set and the data retrieved from the exhaust gas analysis and supervision platform to build a pollutant coupling comparison model, generate an anomaly signal and send it to the exhaust gas analysis and supervision platform; The emission risk estimation module receives part of the data in the tag set, and retrieves historical data from the exhaust gas analysis and supervision platform for trend analysis, generates risk signals and sends them to the exhaust gas analysis and supervision platform.

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