CN216899796U - Vehicle exhaust monitoring device based on unified diagnosis service - Google Patents
Vehicle exhaust monitoring device based on unified diagnosis service Download PDFInfo
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- CN216899796U CN216899796U CN202122481779.1U CN202122481779U CN216899796U CN 216899796 U CN216899796 U CN 216899796U CN 202122481779 U CN202122481779 U CN 202122481779U CN 216899796 U CN216899796 U CN 216899796U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model provides a vehicle exhaust monitoring device based on unified diagnosis service, which comprises: the optical sensor is used for acquiring an optical signal of vehicle exhaust and converting the optical signal into a voltage signal for output; the data storage module is used for acquiring and storing a numerical value signal according to the voltage signal output by the optical sensor; the transmission control module is used for receiving an external control command, a numerical signal and a device running state parameter, and is also used for packaging the numerical signal, the device running state parameter and the control command through the unified diagnosis service to obtain unified diagnosis service protocol data and transmitting the unified diagnosis service protocol data to the outside; a power module for supplying power to the device; and the encryption module is used for encrypting and decrypting the unified diagnostic service protocol data when the transmission control module transmits the data outwards. The utility model is based on the existing UDS protocol, and can adjust and optimize corresponding regulations in time through devices such as a diagnostic instrument and the like, thereby having stronger expandability.
Description
Technical Field
The utility model relates to the technical field of vehicle detection devices, in particular to a vehicle tail gas monitoring device based on unified diagnosis service.
Background
With the rapid development of the traffic industry in China, the popularization rate of automobiles is increased year by year, the wide use of automobiles brings convenience to the life of people, and meanwhile, the influence on the environment is more and more serious, and especially the tail gas generated in the running process of the automobiles is the chief culprit of causing environmental pollution.
Automobile exhaust contains hundreds of different chemicals, and main pollutants are hydrocarbons, nitrogen oxides, carbon monoxide, sulfur dioxide, lead-containing compounds, benzopyrene, solid particles and the like. Automobile exhaust is mostly concentrated on a low layer about 1 m away from the ground and is just near a respiratory zone of a person, so that the automobile exhaust has great harm to human health. Firstly, the automobile exhaust can cause damage to human cells, reduce human immunity and easily cause diseases of respiratory tract and cardiovascular system. Secondly, the exhaust gas of automobiles contains a large amount of carbon dioxide and nitrogen oxide, thereby causing the occurrence of greenhouse effect. In addition, automobile exhaust also promotes the formation of acid rain. Therefore, the device capable of detecting the exhaust emission of the vehicle in time is arranged in the vehicle, which is beneficial to reducing the influence of the vehicle on the environment, finding out the vehicles exceeding standards in time and repairing or scrapping the vehicles.
At present, the monitoring scheme for the automobile exhaust is that the automobile exhaust is monitored and calculated by a fixed algorithm through a fixed and unchangeable device, and the automobile exhaust monitoring scheme is single in function, cannot be upgraded and cannot be changed. However, as the service life of the vehicle increases, the unreliability of the device accumulates year by year, and the monitoring capability of the existing device on the exhaust gas is weakened more and more.
SUMMERY OF THE UTILITY MODEL
The utility model provides a vehicle exhaust monitoring device based on unified diagnosis service, which is used for solving the defect that the monitoring capability is weakened because the unreliability of the vehicle exhaust monitoring device in the prior art is increased year by year, realizing the effective upgrade of an algorithm in the device and improving the expandability of the device.
The utility model provides a vehicle exhaust monitoring device based on unified diagnosis service, which comprises:
the optical sensor is used for acquiring optical signals of vehicle exhaust and converting the optical signals into voltage signals to be output;
the data storage module is used for obtaining a numerical signal according to the voltage signal output by the optical sensor and also used for storing the voltage signal output by the optical sensor, the numerical signal output by the data analysis module and the device running state parameter;
the transmission control module is used for receiving an external control command, the numerical value signal and the device running state parameter, and is also used for packaging the numerical value signal, the device running state parameter and the control command through a unified diagnosis service to obtain unified diagnosis service protocol data and transmitting the unified diagnosis service protocol data to the outside;
a power module for supplying power to the device;
and the encryption module is used for encrypting and decrypting the unified diagnostic service protocol data when the transmission control module transmits data outwards.
According to the vehicle exhaust monitoring device based on the unified diagnosis service, the device further comprises a voltage conversion module.
According to the vehicle exhaust monitoring device based on the unified diagnosis service, the numerical signals comprise the opacity, the light absorption coefficient and the particulate matter concentration.
According to the vehicle exhaust monitoring device based on the unified diagnosis service, the opacity is calculated by the following formula 1:
wherein n is opacity, VrealIs the actual voltage, VmaxIs the maximum voltage, VminIs the minimum voltage.
According to the vehicle exhaust monitoring device based on the unified diagnosis service, the light absorption coefficient is calculated by the following formula 2:
wherein p is the light absorption coefficient, L is the standard optical path length, nsIs the opacity at standard path length.
According to the vehicle exhaust monitoring device based on the unified diagnosis service, the concentration of the particulate matters is calculated by the following formula 3:
c＝k*nsformula 3
Wherein c is the concentration of the particulate matter, and k is the ratio of the concentration of the particulate matter to the opacity.
According to the vehicle exhaust monitoring device based on the unified diagnosis service, the data analysis module and the data storage module are arranged on the microcontroller.
According to the vehicle exhaust monitoring device based on the unified diagnosis service provided by the utility model, the transmission control module is used for receiving an external control command and comprises the following components:
the transmission control module is used for receiving a control command of the diagnostic apparatus, and the transmission control module is also used for responding parameters according to the control command of the diagnostic apparatus.
According to the vehicle exhaust monitoring device based on the unified diagnosis service, the encryption module supports a block cipher algorithm, a hash cipher algorithm, a sequence cipher algorithm and a public key cipher algorithm.
According to the vehicle exhaust monitoring device based on the unified diagnosis service, the device operation state parameters comprise device abnormal operation log parameters.
According to the vehicle exhaust monitoring device based on the unified diagnosis service, provided by the utility model, when automobile exhaust passes through the vehicle exhaust pipe, the automobile exhaust is captured by the optical sensor of equipment arranged on the exhaust pipe through the optical sensor, the data analysis module, the data storage module, the transmission control module, the power supply module and the encryption module. The optical sensor sends the collected information to the data storage module for processing, comparison and analysis. One part of the processed data is delivered to the data storage module for storage, the other part is delivered to the transmission control module for outputting the data to the outside, and the safety of data transmission can be ensured while transmission is carried out. Compared with the existing device, the utility model adopts a stable acquisition method, abundant communication means and reliable transmission protocol, and has excellent storage performance and operation performance. The upgrading of the device, the fault detection and the intelligent adaptation of the monitoring algorithm can be realized according to the updating of the laws and regulations.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a vehicle exhaust monitoring device based on a unified diagnostic service according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a vehicle exhaust monitoring device based on a unified diagnostic service according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unified Diagnostic Services (UDS), is a standardized standard for diagnostic services. Devices containing UDS have the ability to diagnose online, reprogram the device, and can split data communications into various different service requirements, using a uniform format for data communications. All electronic equipment with the UDS function on the vehicle can interact with the device. The vehicle exhaust monitoring device based on the unified diagnosis service of the present invention is described below with reference to fig. 1, and includes:
the optical sensor is used for acquiring optical signals of vehicle exhaust and converting the optical signals into voltage signals to be output;
the data storage module is used for obtaining a numerical signal according to the voltage signal output by the optical sensor and also used for storing the voltage signal output by the optical sensor, the numerical signal output by the data analysis module and the device running state parameter;
the transmission control module is used for receiving an external control command, the numerical value signal and the device running state parameter, and is also used for packaging the numerical value signal, the device running state parameter and the control command through a unified diagnosis service to obtain unified diagnosis service protocol data and transmitting the unified diagnosis service protocol data to the outside;
a power module for supplying power to the device;
and the encryption module is used for encrypting and decrypting the unified diagnostic service protocol data when the transmission control module transmits data outwards.
The vehicle exhaust monitoring device based on the unified diagnosis service provided by the utility model can be used for capturing the vehicle exhaust by an optical sensor of equipment arranged on an exhaust pipe when the vehicle exhaust passes through the exhaust pipe of the vehicle. The optical sensor sends the collected information to the data analysis module for processing, comparison and analysis. One part of the processed data is delivered to the data storage module for storage, the other part is delivered to the transmission control module for outputting the data to the outside, and the safety of data transmission can be ensured while transmission is carried out. Compared with the existing device, the OTA updating method and the OTA updating device can update OTA through equipment such as a diagnostic instrument based on the existing UDS protocol, have more lasting operation than the equipment supported by the original technology, and can adjust and optimize according to regulations and the like.
Furthermore, the device also comprises a voltage conversion module, and because the working voltages required by the optical sensor, the data storage module, the transmission control module and the encryption module are different, the input voltage of the power supply is converted into the voltage for normal working of other modules through the voltage conversion module. Therefore, the power supply module provides the total power supply required by the system, and provides a matched power supply for the system through the voltage division conversion module.
Further, the numerical signals include opacity, light absorption coefficient, and particulate matter concentration. Note that the opacity is calculated by equation 1:
wherein n is opacity, VrealIs the actual voltage, VmaxIs the maximum voltage, VminIs the minimum voltage.
The light absorption coefficient is calculated by equation 2:
wherein p is the light absorption coefficient, L is the standard optical path length, nsIs the opacity at standard path length.
The particulate matter concentration is calculated by equation 3:
c＝k*nsformula 3
Wherein c is the concentration of the particulate matter, and k is the ratio of the concentration of the particulate matter to the opacity.
Further, the data analysis module and the data storage module are arranged on the microcontroller. In the embodiment, the microcontroller adopts a vehicle-standard grade chip, the main frequency is as high as 80MHz, and the bearable working temperature range is-40 ℃ to 125 ℃; contains ARMTM Cortex-M4F, 32-bit CPU.
Further, the transmission control module is configured to receive an external control command, and when actual collected data is transmitted, a protocol layer is required to ensure reliability and integrity of data transmission, and on such a premise, the device encapsulates the data based on the UDS, including:
the transmission control module is used for receiving a control command of the diagnostic apparatus, and the transmission control module is also used for responding parameters according to the control command of the diagnostic apparatus.
In this embodiment, the transmission control module performs protocol transmission according to the following files:
ISO14229-1:2013 road vehicle unified diagnostic service UDS specifications and requirements.
ISO11898-1:2015 road vehicle controller area network CAN first part data link layer and physical signals.
ISO15031-5:2015 diagnosis communication with respect to emissions between road vehicle and external device fifth part emission related diagnosis service.
ISO15765-2:2011 road vehicles are based on diagnostic second part network layer services of controller area network, CAN.
ISO15765-3:2004 road vehicle third part of diagnostics based on controller area network CAN unify diagnostics services.
In this embodiment, the data processing of other modules can be developed based on a common knowledge software architecture, and after the UDS is added, the data interface of the device can be more abstracted, which is beneficial to application modularization.
Furthermore, the encryption module can encrypt and decrypt data and support various encryption algorithms to meet different application requirements. Meanwhile, as a safety authentication module of the equipment, a safety hardware authentication platform based on internet isolation is provided. The module is internally provided with a high-precision real-time clock and a temperature compensation clock crystal oscillator, has various encryption and abstract algorithms, can realize various functions of credible authentication, signature, remote signature verification, networking two-way authentication, access authority control and the like of data, and ensures the validity, uniqueness and legality of networking equipment and recording equipment and the safety of storage, transmission and interaction.
It should be noted that, in this embodiment, the algorithm supported by the encryption module includes:
and (3) block cipher algorithm: SM1, SM4, SM7, 3DES, AES;
hash cipher algorithm: SM3, SHA (1/224/256/384/512);
and (3) a sequence cipher algorithm: ZUC;
public key cryptographic algorithm: SM2, RSA 1024/2048.
Furthermore, the device running state parameters comprise device abnormal running log parameters, and logs can be derived according to related parameter commands so as to be checked by a user at a computer end.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A vehicle exhaust monitoring device based on unified diagnostic service, comprising:
the optical sensor is used for acquiring an optical signal of vehicle exhaust and converting the optical signal into a voltage signal for output;
the data storage module is used for acquiring a numerical signal according to the voltage signal output by the optical sensor and also used for storing the voltage signal output by the optical sensor, the numerical signal output by the data analysis module and the device running state parameter;
the transmission control module is used for receiving an external control command, the numerical value signal and the device running state parameter, and is also used for encapsulating the numerical value signal, the device running state parameter and the control command through a unified diagnosis service to obtain unified diagnosis service protocol data and transmitting the unified diagnosis service protocol data to the outside;
a power module for supplying power to the device;
the encryption module is used for encrypting and decrypting the unified diagnostic service protocol data when the transmission control module transmits data outwards;
the numerical signals comprise opacity, light absorption coefficient and particulate matter concentration;
the data analysis module and the data storage module are arranged on the microcontroller.
2. The unified diagnostic service based vehicle exhaust monitoring device according to claim 1, wherein said device further comprises a voltage conversion module.
3. The unified diagnostic service based vehicle exhaust monitoring device according to claim 1, wherein the opacity is calculated by equation 1:
wherein n is opacity, VrealIs the actual voltage, VmaxIs the maximum voltage, VminIs the minimum voltage.
4. The unified diagnostic service based vehicle exhaust monitoring device according to claim 3, wherein the light absorption coefficient is calculated by equation 2:
wherein p is the light absorption coefficient, L is the standard optical path length, nsIs the opacity at standard path length.
5. The unified diagnostic service based vehicle exhaust monitoring device according to claim 4, wherein the particulate matter concentration is calculated by equation 3:
c＝k*nsformula 3
Wherein c is the concentration of the particulate matter, and k is the ratio of the concentration of the particulate matter to the opacity.
6. The unified diagnostic service-based vehicle exhaust monitoring device according to claim 1, wherein the transmission control module is configured to accept external control commands, and comprises:
the transmission control module is used for receiving a control command of the diagnostic apparatus, and the transmission control module is also used for responding parameters according to the control command of the diagnostic apparatus.
7. The vehicle exhaust monitoring device according to claim 1, wherein the encryption module supports a block cipher algorithm, a hash cipher algorithm, a sequential cipher algorithm and a public key cipher algorithm.
8. The unified diagnostic service based vehicle exhaust monitoring device according to claim 1, wherein the device operational state parameters comprise device abnormal operation log parameters.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122481779.1U CN216899796U (en) | 2021-10-14 | 2021-10-14 | Vehicle exhaust monitoring device based on unified diagnosis service |
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| CN202122481779.1U CN216899796U (en) | 2021-10-14 | 2021-10-14 | Vehicle exhaust monitoring device based on unified diagnosis service |
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| CN216899796U true CN216899796U (en) | 2022-07-05 |
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