CN217467530U - Automobile CAN bus signal acquisition terminal and system - Google Patents
Automobile CAN bus signal acquisition terminal and system Download PDFInfo
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- CN217467530U CN217467530U CN202221186152.1U CN202221186152U CN217467530U CN 217467530 U CN217467530 U CN 217467530U CN 202221186152 U CN202221186152 U CN 202221186152U CN 217467530 U CN217467530 U CN 217467530U
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Abstract
The embodiment of the utility model discloses car CAN bus signal acquisition terminal and system. Wherein, collection terminal includes: the system comprises an OBD interface, a core board card, an Ethernet unit, an EC20 communication module and a Bluetooth transceiver; the OBD interface is electrically connected with the core board card, and is used for collecting CAN bus signals of the automobile and transmitting the CAN bus signals to the core board card; the core board card is used for analyzing the collected CAN bus signals and transmitting the signals to at least one of the Ethernet unit, the EC20 communication module and the Bluetooth transceiver; the ethernet unit, the EC20 communication module, and the bluetooth transceiver are electrically connected to the core board, respectively, and send the analyzed data to the outside via an ethernet protocol, a remote wireless communication protocol, and a bluetooth protocol, respectively. In the embodiment, the OBD interface is used for acquiring the CAN bus signal of the automobile and sending the CAN bus signal to the outside to be provided for the external equipment for further application.
Description
Technical Field
The embodiment of the utility model provides a relate to automobile-used data acquisition technical field, especially relate to a car CAN bus signal acquisition terminal and system.
Background
A CAN (Controller Area Network) is one of the most widely used field buses internationally, and CAN establish a communication Network to ensure free communication between nodes. A large amount of automobile operation data CAN be analyzed by extracting CAN bus signals.
CAN bus signal acquisition equipment among the prior art all is embedded inside the car, lacks the nimble external sending mechanism, is difficult to carry out further utilization to the data of gathering.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a car CAN bus signal acquisition terminal and system gathers car CAN bus signal and outwards sends through the OBD interface, provides the further application of external equipment.
In a first aspect, an embodiment of the utility model provides an automobile CAN bus signal acquisition terminal, include: the vehicle-mounted diagnosis system comprises an OBD interface, a core board card, an Ethernet unit, an EC20 communication module and a Bluetooth transceiver;
the OBD interface is electrically connected with the core board card and is used for being externally connected with an OBD interface of an automobile, so that CAN bus signals of the automobile are collected and transmitted to the core board card;
the core board card is used for analyzing the collected CAN bus signal, transmitting the analyzed CAN bus signal to at least one of the Ethernet unit, the EC20 communication module and the Bluetooth transceiver, receiving an external control instruction transmitted by at least one of the Ethernet unit, the EC20 communication module and the Bluetooth transceiver, and executing the external control instruction;
the ethernet unit, the EC20 communication module, and the bluetooth transceiver are electrically connected to the core board card, respectively, and send the analyzed data to the outside via the ethernet protocol, the remote wireless communication protocol, and the bluetooth protocol, respectively, and receive the control command and transmit the control command to the core board card.
Optionally, the core board card includes: an MX6 chip and a synchronous dynamic random access memory, onboard linux operating system.
Optionally, the ethernet unit includes: a physical interface transceiver and a dual port;
the physical interface transceiver is electrically connected with the core board card and is used for realizing data transceiving of an Ethernet physical layer;
the dual-network port is electrically connected with the physical interface transceiver and is used for realizing data transceiving of an Ethernet network layer; the dual-network port comprises a local area network port and a wide area network port which are respectively used for realizing local area network communication and wide area network communication.
Optionally, the dual network port is used for connecting an upper computer, and the upper computer interacts signals with the core board card through the dual network port and the physical interface transceiver.
Optionally, the EC20 communication module is electrically connected to the core board card through a minipci interface, and the EC20 communication module is externally connected to a SIM card, a global positioning system chip, and a 4G antenna.
Optionally, the acquisition terminal further includes:
the gyroscope is used for detecting the current state of the acquisition terminal; and
and the LED lamp is used for displaying the running state of the acquisition terminal.
Optionally, the acquisition terminal further includes at least one of the following interfaces:
the USB interface, the RS485 bus interface, the RS232 bus interface and the 8-path extensible GPIO interface are respectively used for connecting adaptive external equipment to realize signal interaction.
In a second aspect, the embodiment of the utility model provides a car CAN bus signal acquisition system, include: the automobile CAN bus signal acquisition terminal and an automobile connected with the acquisition terminal;
wherein, the OBD interface of collection terminal with the OBD interface connection of car gathers the CAN bus signal of car.
Optionally, the acquisition system further comprises: at least one of an upper computer, wireless remote equipment and Bluetooth equipment;
the upper computer, the wireless remote equipment and the Bluetooth equipment are respectively connected with the Ethernet unit, the EC20 communication module and the Bluetooth transceiver of the acquisition terminal, and are used for receiving and applying the data analyzed by the acquisition terminal and sending a control instruction to the acquisition terminal.
Optionally, the acquisition system further comprises: a cloud server;
the cloud server is in communication connection with at least one of the upper computer, the wireless remote equipment and the Bluetooth equipment, receives and applies the analyzed data through at least one of the upper computer, the wireless remote equipment and the Bluetooth equipment, and sends a control instruction to the acquisition terminal through at least one of the upper computer, the wireless remote equipment and the Bluetooth equipment.
The utility model provides a collection terminal CAN be through after in the car, through the CAN bus signal of OBD interface collection car and through network transmission to external application equipment, provides real-time accurate effective data for vehicle diagnosis etc.. In actual operation, the terminal is directly connected to an automobile OBD interface, and is convenient, quick and easy to operate. The data output interface is an Ethernet unit, an EC20 module and a Bluetooth transceiver, is compatible with different communication protocols, realizes flexible access of external application equipment, can select proper external application equipment according to actual conditions, and reduces the limitation of application scenes.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is the embodiment of the utility model provides a pair of complete car CAN bus signal acquisition terminal and collection system's schematic diagram.
Fig. 2 is an external structure view of a CAN bus signal collecting terminal of a whole vehicle provided by the embodiment of the utility model.
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. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
The embodiment of the utility model provides a car CAN bus signal acquisition terminal is applicable to and gathers car CAN bus signal and analytic condition. Fig. 1 includes an internal structure of the acquisition terminal, and fig. 2 shows an external structure of the acquisition terminal. With reference to fig. 1 and 2, the acquisition terminal includes: OBD (On-Board Diagnostics) interface, core Board card, Ethernet unit, EC20 communication module and Bluetooth transceiver.
The OBD interface with nuclear core plate card electricity is connected for the OBD interface of external connection car, thereby gather the CAN bus signal of car and transmit to the core integrated circuit board.
The core board is used for analyzing the collected CAN bus signal, transmitting the analyzed CAN bus signal to at least one of the Ethernet unit, the EC20 communication module and the Bluetooth transceiver, receiving an external control instruction transmitted by at least one of the Ethernet unit, the EC20 communication module and the Bluetooth transceiver, and executing the external control instruction. Optionally, the control instruction is used for controlling the acquisition terminal to work or not work.
Optionally, the core board card includes: MX6 chip (CORTEX-A7 microprocessor) and SDRAM (synchronous dynamic random access) memory, on-board linux operating system.
Specifically, the core board card is a board card based on an I.MX6 chip of NXP company of Enzhipu, an onboard linux operating system, a CORTEX-A7 microprocessor with 32-bit 528Mhz, and an SDRAM memory with 256M. And the core board card uniformly schedules all hardware of the acquisition terminal to work coordinately, executes a control instruction of the upper computer, analyzes the CAN bus signal and interacts the analyzed data.
The CAN bus signal analysis is to extract the operation data of the vehicle from the original signal collected by the OBD port, for example, to analyze a certain level signal collected to a specific engine speed. The implementation process of the parsing is the prior art, and is not described herein again.
The ethernet unit, the EC20 communication module, and the bluetooth transceiver are electrically connected to the core board card, and communicate with the outside through the ethernet protocol, the long-range wireless communication protocol, and the bluetooth protocol, respectively, so as to send the data analyzed by the core board card to the outside, and receive the external control command and transmit the command to the core board card.
In particular, different communication modules are adapted to different devices.
In a first embodiment, the ethernet unit is connected to an upper computer, and the acquisition terminal communicates with the upper computer via an ethernet protocol (e.g., a transmission control protocol). The core board transmits the analyzed data to the upper computer through the Ethernet unit, and the upper computer sends a control instruction to the core board through the Ethernet unit.
Optionally, the ethernet unit includes: a physical interface transceiver and a dual port. The physical interface transceiver is electrically connected with the core board card and is used for realizing data transceiving of the Ethernet physical layer. The physical interface transceiver is a PHY chip and realizes a physical layer defined by the IEEE-802.3 standard, and the physical layer comprises a medium independent interface sublayer, a physical coding sublayer, a physical medium additional sublayer and a physical medium related sublayer. And the double network ports are electrically connected with the physical interface transceiver and are used for realizing data transceiving of the Ethernet network layer. The dual network ports comprise a local area network port and a wide area network port. The lan port is used to implement lan communication, and an IP (Internet Protocol) address is fixed to 192.168.1.100, for example. The wide area network port is used for realizing wide area network communication, is set as a dynamic host configuration protocol self-adaptive IP, and automatically allocates IP addresses.
In a second embodiment, the EC20 communication module is connected to a wireless remote device, and the acquisition terminal communicates with the wireless remote device through a remote wireless communication protocol. The core board transmits the analyzed data to the wireless remote equipment through the EC20 communication module, and the wireless remote equipment sends a control instruction to the core board through the EC20 communication module. Optionally, the wireless remote device includes a mobile phone, a tablet computer, other handheld devices, and the like, and the embodiment is not particularly limited.
Optionally, the EC20 is an LTE Cat 4 wireless communication module introduced by the remote carrier, and is capable of implementing seamless handover between a 3G network and a 4G network. And a miniPCI interface is arranged on the EC20 communication module, and signals are interacted with the core board card through the miniPCI interface. The EC20 communication Module is also externally connected with an SIM (Subscriber identity Module) card, a global positioning system chip and a 4G antenna, and supports an acquisition terminal to acquire global navigation satellite system positioning information and perform external 4G wireless communication.
In a third embodiment, a bluetooth device is connected to the bluetooth transceiver, and the acquisition terminal communicates with the bluetooth device via a bluetooth protocol. The core board transmits the analyzed data to the Bluetooth device through the Bluetooth transceiver, and the Bluetooth device sends a control signal to the core board through the Bluetooth transceiver. Optionally, the wireless remote device includes a mobile phone, a tablet computer, or other handheld devices, and the like, and the embodiment is not particularly limited.
In the fourth embodiment, a plurality of the ethernet unit, the EC20 communication module, and the bluetooth transceiver are simultaneously connected with corresponding external application devices. After the core board receives the control instructions received by the multiple external application devices at the same time, different instructions are executed according to a preset priority order, for example, ethernet unit > EC20 communication module > bluetooth transceiver, and the like. And after the core board card obtains the analyzed data, the data is simultaneously sent to the external application equipment.
Optionally, the collection terminal further includes a gyroscope and an LED (Light Emitting Diode) lamp. The gyroscope is an angular motion detection device and is used for detecting the current state of a CAN bus signal acquisition terminal, and comprises three-axis six-direction angles, acceleration and the like. The LED lamp is used for displaying the working state of the acquisition terminal: under the normal working state, the LED lamp is turned off; under the fault state, the LED lamp is on.
Optionally, the acquisition terminal further comprises a power protection circuit, the power protection circuit is connected between the OBD interface and the core board card, and the voltage on the OBD interface of the automobile is converted into 12V, 5V, 3.3V and 1.8V voltages for each functional device of the core board card by adopting an isolation power design.
Optionally, the acquisition terminal further includes at least one of the following interfaces: the USB interface, the RS485 bus interface, the RS232 bus interface and the 8-channel extensible GPIO interface are respectively used for connecting the adaptive external extension equipment to realize signal interaction.
The USB interface is used for connecting USB equipment and realizing functions such as data copying, program upgrading and the like. And the RS485 bus interface, the RS232 bus interface and the 8-path extensible GPIO interface are used for connecting external extension equipment with the same interface, such as an electric meter, a temperature and humidity module and the like. Each interface sends acquired data of the external expansion equipment, such as current, temperature and humidity to the core board card and transmits the data to the external application equipment for the external application equipment to use.
Optionally, the acquisition terminal further includes a reset key for resetting each internal hardware.
The embodiment of the utility model provides a still provide a car CAN bus signal acquisition system. As shown in fig. 1, the acquisition system includes: the automobile CAN bus signal acquisition terminal provided by any one of the above embodiments and the automobile connected with the acquisition terminal. Wherein, the OBD interface of collection terminal with the OBD interface connection of car gathers the CAN bus signal of car.
The system further comprises: at least one of host computer, wireless remote equipment, bluetooth equipment. The upper computer, the wireless remote equipment and the Bluetooth equipment are respectively connected with the Ethernet unit, the EC20 communication module and the Bluetooth transceiver of the acquisition terminal, and are used for receiving and applying the data analyzed by the acquisition terminal and sending a control instruction to the acquisition terminal.
The working principle of the car CAN bus signal acquisition terminal of the utility model is described below by taking the car CAN bus signal acquisition system as an example. For convenience of distinguishing and describing, at least one of the upper computer, the wireless device and the Bluetooth device is called an external application device, and an interface for connecting the external application device and the acquisition terminal is called a control peripheral interface.
After the external application equipment sends a control signal of 'start work' to the acquisition terminal through the corresponding control peripheral interface, the core board card starts work in response to the signal, acquires the automobile CAN bus signal through the OBD interface, controls the power protection circuit to carry out voltage conversion on the extracted signal, and transmits the converted signal to the core board card. The core board card analyzes the converted signals to obtain the running data of the whole vehicle, such as the rotating speed of a compressor, the power of the compressor, the rotating speed of an engine and the like; and transmitting the data to the external application device through the control peripheral interface, and receiving and applying the running data by the external application device. In the working process of the acquisition terminal, the core board card controls the gyroscope to detect the current state of the acquisition terminal in real time, and the LED lamp displays the running state of the acquisition terminal in real time.
After the external application equipment sends a control signal of stopping working to the acquisition terminal through the corresponding control peripheral interface, the core board card stops working in response to the signal.
Optionally, the system further comprises: and (4) a cloud server. The cloud server is in communication connection with at least one of the upper computer, the wireless equipment and the Bluetooth equipment, and on one hand, the analyzed data is received and applied through at least one of the upper computer, the wireless equipment and the Bluetooth equipment; and on the other hand, the other vehicle sends the running data of other vehicles to at least one of the upper computer, the wireless equipment and the Bluetooth equipment, so that the data sharing of multiple vehicles is realized. In addition, the cloud server can also send a control instruction to the acquisition terminal through at least one of the upper computer, the wireless device and the Bluetooth device, and the working state of the acquisition terminal is controlled at the cloud end.
Optionally, the system further comprises: USB equipment connected with the USB interface, and external expansion equipment connected with the RS485 bus interface, the RS232 bus interface and the 8-path extensible GPIO interface, such as an ammeter, a temperature and humidity module and the like.
The utility model discloses a car CAN bus signal acquisition terminal and collection system have following technological effect at least:
1. the acquisition terminal CAN be installed in the automobile through after-installation, and CAN bus signal of the automobile is acquired through the OBD interface and is transmitted to external application equipment through the network, so that real-time accurate effective data are provided for vehicle diagnosis and the like. In actual operation, the terminal is directly connected to an automobile OBD interface, and is convenient, quick and easy to operate. The data output interface is an Ethernet unit, an EC20 module and a Bluetooth transceiver, is compatible with different communication protocols, realizes flexible access of external application equipment, can select proper external application equipment according to actual conditions, and reduces the limitation of application scenes.
2. The acquisition system can acquire the automobile operation data in real time for a user to check and use, and the cloud server can receive the operation data of a plurality of automobiles through a plurality of external application devices, so that multi-automobile data sharing or multi-automobile remote control is realized.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not make the essence of the corresponding technical solutions depart from the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides an automobile CAN bus signal acquisition terminal which characterized in that includes: the vehicle-mounted diagnosis system comprises an OBD interface, a core board card, an Ethernet unit, an EC20 communication module and a Bluetooth transceiver;
the OBD interface is electrically connected with the core board card and is used for being externally connected with an OBD interface of an automobile, so that CAN bus signals of the automobile are collected and transmitted to the core board card;
the core board card is used for analyzing the collected CAN bus signal, transmitting the analyzed CAN bus signal to at least one of the Ethernet unit, the EC20 communication module and the Bluetooth transceiver, receiving an external control instruction transmitted by at least one of the Ethernet unit, the EC20 communication module and the Bluetooth transceiver, and executing the external control instruction;
the ethernet unit, the EC20 communication module, and the bluetooth transceiver are electrically connected to the core board card, respectively, and send the analyzed data to the outside via the ethernet protocol, the remote wireless communication protocol, and the bluetooth protocol, respectively, and receive the control command and transmit the control command to the core board card.
2. The acquisition terminal of claim 1, wherein the core board card comprises: MX6 chip and synchronous dynamic random access memory, on-board linux operating system.
3. The acquisition terminal according to claim 1, wherein the ethernet unit comprises: a physical interface transceiver and a dual port;
the physical interface transceiver is electrically connected with the core board card and is used for realizing data transceiving of an Ethernet physical layer;
the dual-network port is electrically connected with the physical interface transceiver and is used for realizing data transceiving of an Ethernet network layer; the dual-network port comprises a local area network port and a wide area network port which are respectively used for realizing local area network communication and wide area network communication.
4. The acquisition terminal according to claim 3, wherein the dual network port is used for connecting an upper computer, and the upper computer interacts signals with the core board card through the dual network port and the physical interface transceiver.
5. The acquisition terminal of claim 1, wherein the EC20 communication module is electrically connected with the core board card through a miniPCI interface, and the EC20 communication module is externally connected with a SIM card, a global positioning system chip and a 4G antenna.
6. The acquisition terminal of claim 1, further comprising:
the gyroscope is used for detecting the current state of the acquisition terminal; and
and the LED lamp is used for displaying the running state of the acquisition terminal.
7. The acquisition terminal according to any of claims 1 to 6, further comprising at least one of the following interfaces:
and the USB interface, the RS485 bus interface, the RS232 bus interface and the 8-path extensible GPIO interface are respectively used for connecting adaptive external equipment so as to realize signal interaction.
8. The utility model provides an automobile CAN bus signal acquisition system which characterized in that includes: the automotive CAN bus signal acquisition terminal of any one of claims 1 to 7, and an automobile to which the acquisition terminal is connected;
wherein, the OBD interface of collection terminal with the OBD interface connection of car gathers the CAN bus signal of car.
9. The system of claim 8, further comprising: at least one of an upper computer, wireless remote equipment and Bluetooth equipment;
the upper computer, the wireless remote equipment and the Bluetooth equipment are respectively connected with the Ethernet unit, the EC20 communication module and the Bluetooth transceiver of the acquisition terminal, and are used for receiving and applying the data analyzed by the acquisition terminal and sending a control instruction to the acquisition terminal.
10. The system of claim 9, further comprising: a cloud server;
the cloud server is in communication connection with at least one of the upper computer, the wireless remote equipment and the Bluetooth equipment, receives and applies the analyzed data through at least one of the upper computer, the wireless remote equipment and the Bluetooth equipment, and sends a control instruction to the acquisition terminal through at least one of the upper computer, the wireless remote equipment and the Bluetooth equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221186152.1U CN217467530U (en) | 2022-05-09 | 2022-05-09 | Automobile CAN bus signal acquisition terminal and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221186152.1U CN217467530U (en) | 2022-05-09 | 2022-05-09 | Automobile CAN bus signal acquisition terminal and system |
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| Publication Number | Publication Date |
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| CN217467530U true CN217467530U (en) | 2022-09-20 |
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| CN202221186152.1U Active CN217467530U (en) | 2022-05-09 | 2022-05-09 | Automobile CAN bus signal acquisition terminal and system |
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- 2022-05-09 CN CN202221186152.1U patent/CN217467530U/en active Active
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