CN115237093A

CN115237093A - On-vehicle diagnosis rate IUPR spot check method and system

Info

Publication number: CN115237093A
Application number: CN202210868690.7A
Authority: CN
Inventors: 阙建; 张文海; 刘斌
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2022-10-25

Abstract

The invention relates to a spot check method and a spot check system for an in-use vehicle diagnosis rate IUPR, wherein the spot check method comprises the following steps: s01, a terminal receiving computer sends a corresponding IUPR data stream downloading request to a cloud server through the information of the in-use vehicle; s02, the cloud server judges whether the corresponding IUPR data stream is stored in the memory or not based on the downloading request; s03, in S02, if so, the cloud server downloads the corresponding IUPR data stream from the memory and sends the corresponding IUPR data stream to the terminal receiving computer; s04, in S02, if not, the cloud server sends a transmission request of the corresponding IUPR data stream to the communication module; s05, the communication module sends a corresponding IUPR data stream to the cloud server; and S06, the cloud server sends the corresponding IUPR data stream to the terminal receiving computer. Based on the method or the system provided by the invention, the automobile manufacturer can quickly extract the IUPR of the users in use all over the country so as to adapt to the requirements of the national OBD regulations.

Description

Spot check method and system for in-use vehicle diagnosis rate IUPR

Technical Field

The invention relates to the technical field of vehicles, in particular to a spot check technology of in-vehicle diagnosis rate IUPR.

Background

IUPR (In-Use Performance Ratio) refers to a monitoring frequency of an on-board diagnostic (OBD) monitoring function of an In-vehicle system. It characterizes the frequency with which diagnostic functions of the vehicle operate during daily use, and is a long-term statistical ratio. Vehicle emissions regulations all increase the statistical requirements for the diagnostic rate IUPR of on-board vehicles.

The requirements for the in-use vehicle compliance in GB18352.6-2016 limit and measurement method for pollutant emission of light automobiles are as follows: first, for a particular test M (e.g., catalyst, pre-oxygen sensor, etc.), the IUPRm of a particular OBD family meets the statistical requirements that the regulatory requirements are met, i.e., the average IUPRm is 0.1 or greater and the average IUPRm for over 50% of vehicles is 0.1 or greater; secondly, in 18 months after the vehicle starts to be sold, and every 18 months later, the manufacturer should prove to the regulatory form certification authority that all the detection of the IUPR meets the requirement of the regulation "requirement 1", namely, the manufacturer should periodically perform IUPR spot check on the sold user vehicle according to the OBD family and submit the report to the national environmental protection department, the spot check of the user vehicle should be representative, the sample vehicle should come from a representative area, and the difference in aspects such as environment, fuel conditions, average road speed and city/highway driving should be considered, the current condition is that the IUPR information can only be read from the user vehicle by using a terminal device such as a diagnostic apparatus, etc., the efficiency is low and a large amount of manpower and financial resources are wasted, and the above regulatory requirement on the diagnostic rate IUPR in vehicle compliance is difficult to meet.

Chinese patent publication No. CN106647352A discloses a technology entitled "a device for counting and transmitting IUPR of in-use vehicle diagnostic rate", which includes a transceiver device for acquiring and storing IUPR information of a vehicle, the transceiver device being installed in the vehicle, the IUPR information of the vehicle being sent out by the transceiver device in a wireless communication manner; and the receiving part is used for receiving the IUPR information of the vehicle so that the IUPR information can be read and counted, and the transmitting and receiving device is installed in the vehicle and can transmit the IUPR information of the vehicle to the receiving part in a wireless communication mode, so that the IUPR information can be read more easily and is convenient to monitor. Therefore, the IUPR information of the vehicle can be read more conveniently and quickly. This technique does not read the IUPR of vehicles across the country.

Chinese patent publication No. CN113092129A discloses a technique entitled "a method for monitoring IUPR rate of a transmission, in which IUPR rate values of monitoring items of a transmission are calculated in one driving cycle, respectively; and selecting the minimum IUPR value from the IUPR values corresponding to the monitoring items, and sending the minimum IUPR value to an on-board diagnosis system OBD. The technology adopts the IUPR rate obtained by a plurality of monitoring items, and can accurately and reliably reflect the frequency of diagnosis function operation of the gearbox in the daily use process. This technique does not allow IUPR reading of vehicles in use across the country.

Disclosure of Invention

The invention aims to provide a spot check method and a spot check system for the in-use vehicle diagnosis rate IUPR, which solve the technical problems that: the prior art is very difficult to extract the IUPR of the vehicles in use all over the country and has low efficiency.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a spot check method for the in-use diagnosis rate IUPR comprises the following steps:

s01, a terminal receiving computer sends a corresponding IUPR data stream downloading request to a cloud server through the information of the in-use vehicle;

s02, the cloud server judges whether the corresponding IUPR data stream is stored in a memory or not based on the downloading request, if so, the step enters S03, and if not, the step enters S04;

s03, the cloud server downloads the corresponding IUPR data stream from the memory and sends the corresponding IUPR data stream to the terminal receiving computer;

s04, the cloud server sends the transmission request of the corresponding IUPR data stream to a communication module;

s05, the communication module sends the corresponding IUPR data stream to the cloud server;

and S06, the cloud server sends the corresponding IUPR data stream to the terminal receiving computer.

Preferably, the first and second electrodes are formed of a metal,

the S04 further comprises: the cloud server circularly traverses the memory in the cloud server until the corresponding IUPR data stream is found, wherein the corresponding IUPR data stream is periodically sent by the communication module.

Preferably, the first and second liquid crystal display panels are,

and the communication module receives the IUPR data flow sent by the engine controller through the CAN bus, wherein the IUPR comprises an engine catalyst diagnosis rate, an engine front and rear oxygen sensor diagnosis rate and an engine fuel evaporation leakage diagnosis rate.

Preferably, the first and second electrodes are formed of a metal,

and S01, the information of the vehicle in use comprises a vehicle identification number and a vehicle type.

Preferably, the first and second electrodes are formed of a metal,

in S05, the data stream sent by the communication module further includes a vehicle identification number data stream, a vehicle speed data stream, an environmental pressure data stream, and an environmental temperature data stream.

The invention also provides a spot check system for the in-use vehicle diagnosis rate IUPR, which comprises the following components:

the terminal receives a computer, a cloud server and a vehicle end;

the terminal receiving computer is provided with a downloading request sending module, and the cloud server is provided with a judging module, an IUPR data stream downloading module, a first IUPR data stream sending module, a transmission request sending module and a third IUPR data stream sending module;

the vehicle end is provided with a communication module, and the communication module comprises a second IUPR data flow sending module;

the terminal receiving module is used for sending a corresponding loading request of the IUPR data stream to the cloud server by the computer according to the information of the in-use vehicle;

the judgment module is used for judging whether the corresponding IUPR data stream is stored in a memory or not by the cloud server based on the downloading request;

an IUPR data stream downloading module, configured to, when it is determined that the memory stores the corresponding IUPR data stream, download, by the cloud server, the corresponding IUPR data stream from the memory;

a first IUPR data stream sending module, configured to send the corresponding IUPR data stream to the terminal receiving computer;

the transmission request sending module is used for sending the transmission request of the corresponding IUPR data stream to the communication module of the vehicle end by the cloud server when the fact that the corresponding IUPR data stream is not stored in the memory is judged;

a second IUPR data stream sending module, configured to send the corresponding IUPR data stream to the cloud server through the communication module at the vehicle end;

and a third IUPR data stream sending module, configured to send, by the cloud server, the corresponding IUPR data stream to the terminal receiving computer.

Preferably, the first and second electrodes are formed of a metal,

the transmission request sending module is further configured to, when the memory does not store the corresponding IUPR data stream, the cloud server circularly traverses the memory inside the cloud server until the corresponding IUPR data stream is found, where the corresponding IUPR data stream is periodically sent by the communication module.

Preferably, the first and second liquid crystal display panels are,

and the communication module receives the IUPR data stream sent by the sender controller through the CAN bus, wherein the IUPR data stream comprises an engine catalyst diagnosis rate, an engine front and rear oxygen sensor diagnosis rate and an engine subsequent evaporation leakage diagnosis rate.

Preferably, the first and second liquid crystal display panels are,

the information of the in-use vehicle in the downloading request sending module comprises a vehicle identification number and a vehicle type.

Preferably, the first and second electrodes are formed of a metal,

in the second IUPR data stream sending module, the data stream sent by the communication module further includes a vehicle identification number data stream, a vehicle speed data stream, an ambient pressure data stream, and an ambient temperature data stream.

By adopting the technical scheme, the invention has the following beneficial technical effects:

according to the method and the system, the terminal receives the downloading requirement of the computer to the cloud server in a vehicle identification number mode, the cloud server stores the information of the IUPR of all vehicle types in a big data mode, and if the cloud server does not receive the IUPR information of the vehicle required by the computer, the cloud server sends the request for the IUPR transmission to the TBOX of the corresponding vehicle in a wireless communication mode, so that the automobile manufacturer can quickly extract the IUPR of the vehicles used by users all over the country to meet the requirement of the national OBD regulation.

Drawings

FIG. 1 is a schematic drawing of the in-use diagnostic rate IUPR;

fig. 2 is a drawing flow chart of the on-vehicle diagnosis rate IUPR.

Detailed Description

The invention will be further explained with reference to the drawings.

According to the requirements of the sixth stage exhaust pollutant regulation, the environmental protection department of charge carries out the sampling of the use conformity of the automobile which is used for no more than 16 kilometers (or 12 years, first arrival is taken as the standard), the IUPR is taken as the index for counting the fault information of the key parts discharged by the automobile, the automobile manufacturer actively reports the information to the environmental department of charge according to a certain period and the self-checking IUPR of the OBD family, but the IUPR sampling is difficult when the automobile is distributed all over the country.

In this embodiment, the communication module is a vehicle computer TBOX.

As shown in fig. 1, the total frame of extraction of the IUPR of in-use vehicle diagnosis rate proposed by the present invention is: when an automobile manufacturing enterprise determines to conduct investigation on diagnosis rate IUPR of a certain family of automobiles according to the requirement that the in-use automobiles meet the inspection period, a terminal receiving computer is used for proposing a downloading requirement to a cloud server in a vehicle identification number mode, the cloud server stores information of diagnosis rate IUPR of all automobile types in a big data mode and provides downloading service to the terminal receiving computer, if the cloud server does not have the IUPR information of the automobiles required by the terminal receiving computer, the cloud server proposes a request for IUPR transmission to TBOX of corresponding automobiles in a wireless communication mode, generally, controllers with diagnosis rate IUPR, such as an ECU (electronic control unit) and the like periodically send data streams of diagnosis rate IUPR and the like to the TBOX in the operation process, an automobile manufacturing factory analyzes and processes the obtained data streams of IUPR and the ever-operated working condition, environment, area and the like of the automobiles, and finally forms an in-use diagnosis rate IUPR self-inspection report and submits the in the national environment protection department.

Furthermore, the invention comprises three terminals, namely a vehicle computer TBOX, a cloud server and a terminal receiving computer; the vehicle is provided with a vehicle computer TBOX, which is the premise of realizing the invention, controllers such as an engine management system ECU and the like need to transmit key information such as diagnosis rate IUPR, vehicle identification number and the like needing to be uploaded to a cloud server to a CAN bus, and the vehicle computer TBOX receives and stores the key information such as the diagnosis rate IUPR, the vehicle identification number and the like through the bus; the cloud server receives, stores or transmits key information such as diagnosis rates IUPR and vehicle identification numbers of all in-use vehicles; the terminal receiving computer is a terminal computer of an automobile manufacturer and is used for receiving key information original data such as the diagnosis rate IUPR of the in-use automobile, the vehicle identification number and the like; the vehicle computer TBOX sends key information such as the diagnosis rate IUPR and the vehicle identification number to a cloud server of an enterprise, relevant engineers of an automobile manufacturer download the diagnosis rate IUPR and the like of vehicles needing to be checked in a spot mode from the cloud server through a terminal receiving computer, and the automobile manufacturer can rapidly extract the in-use diagnosis rate IUPR all over the country.

Data streams include, but are not limited to, IUPR data stream, vehicle identification number data stream, vehicle speed data stream, ambient pressure data stream, and ambient temperature data stream; the vehicle identification number can be used for judging a specific vehicle type and an OBD family; the vehicle speed can be known through analyzing the vehicle speed parameters; the ambient pressure data flow and the ambient temperature data flow can know the atmospheric pressure and the ambient temperature of the vehicle operation through the ambient pressure and the ambient temperature; IUPR data flow and vehicle diagnosis rate IUPR specific requirements need to meet 18352.6-2016, appendix J of light automobile pollutant emission Limit and measurement method.

The invention provides a spot check method for the in-use vehicle diagnosis rate IUPR, which comprises the following steps:

the terminal receiving computer comprises a notebook computer, a tablet and a mobile phone. The embodiment adopts a notebook computer, and the notebook computer adopts a von neumann computer, wherein a computer hardware system of the von neumann computer consists of a large part of an arithmetic unit, a memory, a controller, an input device and an output device 5. Instructions and data are stored equally well in memory, with no distinction in form, but with the ability to distinguish between them. Both the instruction and the data are represented by binary codes, and the instruction consists of an operation code and an address code, namely, the IUPR data stream downloading request instruction consists of the operation code and the address code, wherein the operation code indicates the type of the operation, and the address code indicates the address of the operand. The program which is programmed in advance is sent to the main memory, namely the internal memory or the main memory, and then can be executed, once the program is started and executed, the intervention of an operator is not needed, and the computer can automatically execute the instructions one by one until the execution of the program is finished.

The information of the vehicle in use is the vehicle type and the vehicle identification number of the vehicle in use, wherein the vehicle identification number is the 'identification number' of the vehicle and the unique identification code of the vehicle.

The IUPR data stream downloading request is that the terminal receiving computer sends an IUPR data stream downloading request instruction to the cloud server, wherein the IUPR data stream downloading request instruction comprises an operation code field and an address code field, and the operation code indicates what kind of operation the instruction in the instruction should perform and what kind of functions the instruction has. Opcodes are key information for identifying instructions, knowing instruction functions, and distinguishing the composition and usage of operand address contents. The address code gives the address of the operated information, which refers to the instruction or data, including the address of one or more operands participating in the operation, the saving address of the operation result, the branch address of the program, the entry address of the called subprogram, and the like. In this embodiment, the opcode of the instruction has a function of "downloading" and the object to be downloaded is IUPR data pointed to by an operand in the instruction. The length of the download request instruction refers to the number of bits of the binary code contained in an instruction. The instruction word length depends on the length of the opcode, the length of the operand address code, and the number of operand addresses. Note that: the instruction length has no fixed relation with the machine word length, and it may be equal to the machine word length, or greater than or less than the machine word length. In an instruction system, if all instructions are equal in length, they are referred to as fixed-length instruction word structures. The fixed word length instruction has fast execution speed and simple control. If the length of each instruction is different according to the instruction function, the instruction is called a variable length instruction word structure, but the main memory half is addressed according to bytes, and the length of the instruction word is mostly an integral multiple of the bytes.

And S02, the cloud server judges whether the corresponding IUPR data stream is stored in the memory or not based on the downloading request.

The cloud server can be regarded as a host, and in the embodiment, an extreme case can be assumed, and the server or the servers are arranged at a place which is not far away from the terminal receiving computer, namely, at an automobile manufacturing factory.

The cloud server acquires the downloading request data and judges whether the corresponding IUPR data stream is stored in the memory or not through the central processing unit. The central processing unit of the cloud server consists of an arithmetic unit and a controller, the controller has the function of coordinating and controlling the instruction sequence of each part of the computer to execute programs, the instruction sequence comprises an instruction fetching instruction, an instruction analyzing instruction and an instruction executing instruction, and the arithmetic unit has the function of processing data. The arithmetic unit receives the command sent from the controller and executes corresponding action to process and process the data. The arithmetic unit is the center of computer processing data and mainly consists of an arithmetic logic unit, a temporary storage register, an accumulation register, a general register set, a program state word register, a shifter, a counter and the like. The controller is an intelligent center of the whole system, functional components such as an arithmetic unit, a memory, input/output equipment and the like form an organic whole under the control of the controller, and the whole computer is commanded to work coordinately according to the requirements of instructions. The basic function of the controller is to execute instructions, the execution of each instruction being performed by a set of micro-operations issued by the controller. The controller consists of a Program Counter (PC), an Instruction Register (IR), an instruction decoder, a Memory Address Register (MAR), a Memory Data Register (MDR), a time sequence system, a micro-operation signal generator and the like. The controller forms control signals used by each part of the computer according to the instruction operation codes, the execution steps of the instructions and the condition signals. All hardware systems of the computer complete machine cooperatively operate under the control of the control signals to generate an expected execution result.

The memory referred to in this step is a main memory, i.e., an internal memory, and is not an auxiliary memory, and the memory directly accessible by the cpu is the main memory. The auxiliary memory is used for helping the main memory to memorize more information, and the information in the auxiliary memory can not be accessed by the CPU after being called into the main memory. In this embodiment, the IUPR data extracted by the cloud server from the TBOX in the vehicles in use across the country is stored in the auxiliary memory of the cloud server, and the auxiliary memory of the cloud server generally has a large capacity, and the IUPR data of the corresponding address needs to be transferred to the internal memory to be accessed by the CPU, so that the internal memory of the memory in this embodiment is the internal memory, otherwise the technical means in S02 cannot be implemented. The internal memory operates according to the address of the memory cell, and basically comprises an address register, a memory bank, a data register and a timing control logic. The memory bank stores binary information, the address register stores a memory-protection address, and the selected memory unit is found after address decoding. The data register is used for temporarily storing information to be read or written from the memory, and the timing control logic is used for generating various timing signals required for memory operation. The memory bank is composed of a number of memory cells, each memory cell containing a number of memory elements, each memory element storing a bit of the binary code 0 or 1. The MAR is used for addressing, the number of bits of which corresponds to the number of memory cells. The MDR has the same number of bits and length of the stored word, typically an integer multiple of the second power of a byte. Address registers and data registers are part of the memory, but are present in CPUs in modern computers.

S03, in S02, the cloud server downloads the corresponding IUPR data stream from the memory, and sends the corresponding IUPR data stream to the terminal receiving computer.

And S04, if not, the cloud server sends a transmission request of the corresponding IUPR data stream to the vehicle computer TBOX. The automobile TBOX CAN deeply read automobile CAN bus data and a private protocol, and the TBOX terminal collects the automobile bus data and controls the private protocol reversely through the OBD module and the MCU. The TBOX transmits IUPR data captured from the CAN bus to the cloud server through the network module, the TBOX CAN transmit the IUPR data to the cloud server through 3G, 4G or 5G or microwave wireless communication, and the 3G CAN process images, music, videos and other forms and provide web browsing, teleconference and electronic commerce information services. Compared with 3G, 4G has stronger signal propagation capacity, quicker transmission speed, higher intelligent level and more flexible communication mode.

In this embodiment, a 5G communication mode is adopted, so that the IUPR data acquisition speed is faster, the IUPR data collection efficiency is improved, and 5G is 100 times of the 4G network speed and iterates to 10Gbp/s. The 5G delay is shortened to 1ms; the 5G is compatible with 4G, 3G and 2G networks, but the 5G has higher cost and more use fees, so that the 5G is an extension of 4G, and high speed, low delay and large capacity are the remarkable characteristics of 5G.

And S05, the vehicle computer TBOX sends a corresponding IUPR data stream to the cloud server.

The IUPR data stream, i.e., the in-use diagnostic rate, is mainly derived from the engine management system controller (ECU), transmission Controller (TCU), etc. of the vehicle controller that has a diagnostic rate requirement. The IUPR is mainly from an engine management system controller, and related part diagnosis mainly comprises catalyst diagnosis, front and rear oxygen sensor diagnosis, fuel evaporation leakage diagnosis, EGR \ VVT, particle trap diagnosis and the like.

Specifically, S04 may also be: if not, the cloud server circularly traverses the memory in the cloud server until finding the corresponding IUPR data stream, wherein the corresponding IUPR data stream is periodically sent by the vehicle computer TBOX.

The cloud server does not have IUPR data required by the terminal computer, an IUPR data transmission request is sent to the selected vehicle TBOX, the selected vehicle TBOX immediately sends an IUPR data stream periodically through the wireless module after receiving the IUPR data transmission request of the cloud server, and under the normal condition, after waiting for a time delay, the cloud server receives the IUPR data stream and sends the IUPR data stream to the terminal computer, so that the IUPR data stream is downloaded; if the cloud server does not receive the IUPR data stream sent back by the TBOX after waiting for a plurality of time delays, the failure of the IUPR download request is declared, the failure reason may be a failure or no power on of the selected vehicle in use, and another vehicle object needs to be selected to realize the spot check of the vehicle in use.

Specifically, the vehicle computer TBOX receives IUPR data flow sent by an engine controller through a CAN bus, wherein the IUPR data flow comprises an engine catalyst diagnosis rate, an engine front and rear oxygen sensor diagnosis rate and an engine fuel evaporation leakage diagnosis rate.

The diagnosis of the parts in the embodiment mainly comprises catalyst diagnosis, front and rear oxygen sensor diagnosis, fuel evaporation leakage diagnosis, EGR \ VVT, particulate trap diagnosis and the like, and the data flow needs to contain IUPR information of the parts: catalyst diagnosis, front and back oxygen sensor diagnosis, fuel evaporation leakage diagnosis, EGR \ VVT, particle trap diagnosis and the like.

Specifically, the information on the vehicle in use in S01 includes a vehicle identification number and a vehicle type.

Specifically, in S05, the data stream sent by the vehicle computer TBOX further includes a vehicle identification number data stream, a vehicle speed data stream, an ambient pressure data stream, and an ambient temperature data stream. The IUPR data stream contains basic vehicle operation parameters. The data stream should contain at least vehicle identification number, vehicle speed, ambient pressure, ambient temperature. The vehicle identification number can be used for judging a specific vehicle type and an OBD family; the vehicle speed, the once running working condition of the vehicle can be known by analyzing the vehicle speed parameter; the ambient pressure and the ambient temperature can be used for knowing the atmospheric pressure and the ambient temperature of the vehicle.

Referring to fig. 2, the method provided by the present invention is further explained as follows:

first, it is determined whether an IUPR data stream needs to be extracted.

If the vehicle needs to extract the IUPR data stream, the automobile manufacturer comprehensively judges according to the sale starting time and the sale period of the vehicle, but the requirement of corresponding regulation of the vehicle compliance of the sixth-stage emission regulation is not violated.

And after the IUPR data stream is confirmed to be required to be extracted, sending a downloading request to the cloud server through a vehicle identification number, a vehicle type and the like.

And secondly, the cloud server sends the IUPR data stream to the terminal receiving computer.

After receiving a downloading request of a terminal receiving computer, the cloud server firstly judges whether a corresponding IUPR data flow exists in a database, if so, the data flow is directly downloaded and sent, and if not, an IUPR data flow transmission request is sent to a TBOX.

Thirdly, the TBOX sends data streams such as IUPR to the cloud server.

The TBOX is provided with a wireless communication module which can receive and send a service request of the cloud server. The TBOX sends data streams such as IUPR to the cloud server, the data streams can be sent periodically, the data streams can be sent again when the cloud server has a demand, and the form is not limited.

Further explaining the third step, when the terminal receiving computer requests to transmit the hedonic protocol response protocol (IUPR) data stream, if the IUPR data stream required by the terminal receiving computer is not stored in the memory of the cloud server, the terminal receiving computer waits for the terminal receiving computer to periodically send the IUPR data stream to the cloud server along with the vehicle computer TBOX until the terminal receiving computer circularly traverses the memory in the cloud server to find the required IUPR data stream; in another way, when the terminal receiving computer sends an IUPR data stream downloading request to the cloud server, if the memory of the cloud server does not have a corresponding IUPR, the cloud server sends a corresponding IUPR data stream transmission request to the vehicle computer TBOX, and the cloud server sends the corresponding IUPR data stream received from the vehicle computer TBOX to the terminal receiving computer.

In the fourth step, TBOX receives IUPR etc. data stream.

TBOX as vehicle computer, through CAN bus receiving IUPR etc. relevant data stream, and timely response cloud server's request, TBOX CAN temporarily store or not store data stream.

And step five, periodically sending IUPR data flow and other data flows to the CAN bus by a controller such as an ECU.

A vehicle is generally equipped with a plurality of controllers, some of which have a request for the diagnostic rate IUPR, and periodically send IUPR data streams and other data streams to the CAN bus.

In a further embodiment of the present invention, the system for spot-checking the IUPR of vehicle-use diagnosis rate includes a download request sending module, a determining module, an IUPR data stream downloading module, a transmission request sending module, and a first, a second, and a third IUPR data stream sending module. Specifically, the system comprises: the terminal receives a computer, a cloud server and a vehicle end; the terminal receiving computer is provided with a downloading request sending module, and the cloud server is provided with a judging module, an IUPR data stream downloading module, a first IUPR data stream sending module, a transmission request sending module and a third IUPR data stream sending module; the vehicle end is provided with a communication module (namely a hardware T-box), and the communication module comprises a second IUPR data flow sending module.

The above modules perform the following work:

the terminal receiving module is used for sending a corresponding loading request of the IUPR data stream to the cloud server by the computer according to the information of the in-use vehicle; the information of the vehicle in use in the downloading request sending module comprises a vehicle identification number and a vehicle type.

And the judging module is used for judging whether the corresponding IUPR data stream is stored in the memory or not by the cloud server based on the downloading request.

And the IUPR data stream downloading module is used for downloading the corresponding IUPR data stream from the memory by the cloud server when the memory is judged to store the corresponding IUPR data stream.

And the first IUPR data flow sending module is used for sending the corresponding IUPR data flow to the terminal receiving computer.

The transmission request sending module is used for sending a transmission request of the corresponding IUPR data stream to the vehicle computer TBOX by the cloud server when the storage is judged not to store the corresponding IUPR data stream; and when the judgment module judges that the data flow is not the IUPR data flow, the cloud server circularly traverses the memory in the cloud server until the corresponding IUPR data flow is found, wherein the corresponding IUPR data flow is periodically sent by the vehicle computer TBOX.

The second IUPR data stream sending module is used for sending the corresponding IUPR data stream to the cloud server by the vehicle computer TBOX; in the second IUPR data stream sending module, the data stream sent by the vehicle computer TBOX further includes a vehicle identification number data stream, a vehicle speed data stream, an ambient pressure data stream, and an ambient temperature data stream.

And the third IUPR data stream sending module is used for sending the corresponding IUPR data stream to the terminal receiving computer by the cloud server.

The vehicle computer TBOX receives IUPR data flow sent by an engine controller through a CAN bus, wherein the IUPR comprises an engine catalyst diagnosis rate, an engine front and rear oxygen sensor diagnosis rate and an engine rear evaporation leakage diagnosis rate.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various features described in the foregoing embodiments may be combined in any suitable manner without contradiction. The invention is not described in detail in order to avoid unnecessary repetition. In addition, any combination of the various embodiments of the present invention can be made, and the same should be considered as the disclosure of the present invention as long as the idea of the present disclosure is not violated.

Claims

1. A spot check method for the in-use vehicle diagnosis rate IUPR is characterized by comprising the following steps:

2. The method of claim 1,

3. The method of claim 1,

4. The method of claim 1,

5. The method of claim 1,

6. A spot check system for IUPR, which is a vehicle-in-use diagnosis rate, comprising:

the terminal receives a computer, a cloud server and a vehicle end;

the terminal receiving computer sends a corresponding IUPR data stream downloading request to the cloud server according to the information of the in-use vehicle;

7. The spot check system of claim 6,

8. The spot check system of claim 6,

and the communication module receives the IUPR data stream sent by the sender controller through the CAN bus, wherein the IUPR comprises an engine catalyst diagnosis rate, an engine front and rear oxygen sensor diagnosis rate and an engine rear evaporation leakage diagnosis rate.

9. The spot check system of claim 6,

10. The spot check system of claim 6,