A vehicle-mounted information terminal for new energy heavy commercial vehicle

Abstract

The application discloses a kind of vehicle information terminal for new energy heavy commercial vehicle, including: MCU main control unit, and with the 4G / 5G communication module, man-machine interaction module, wireless communication module, data storage module, CAN communication module, GPS / Beidou dual-mode positioning module, power module of MCU main control unit electrical connection;The application realizes the expansion convenience of measurement and control of new energy commercial vehicle in different application scenarios, while using the communication protocol of self-defined, and in the preset information of vehicle information terminal or data server, can quickly realize the automatic identification of new access measurement and control equipment, realize plug and play, reduce software manual update.

Description

TECHNICAL FIELD

[0001] The present application belongs to the new energy vehicle industry, and relates to the network architecture, module function, communication protocol and the like of a vehicle information system, and in particular to a vehicle information terminal for a new energy heavy commercial vehicle. BACKGROUND

[0002] The existing commercial vehicle vehicle information terminal is mainly for monitoring and positioning, and transmits new energy commercial vehicle data to the data platform of the vehicle manufacturer and reports it to the national and local monitoring platforms, so that the national and local monitoring platforms check the compliance data of the vehicle and monitor the relevant health status information of the vehicle.

[0003] New energy commercial vehicles are an important production tool in the logistics and transportation industry, and are widely used in metallurgy, mining, ports, environmental protection and other scenes, and have the characteristics of complex and variable working scenes. Combined with specific uses, there are many modified and variant products based on power chassis. The existing new energy commercial vehicles use CAN communication networks to transmit data of the vehicle power system, safety system, energy management system and accessory system to the vehicle controller, and then the vehicle controller transmits the data to the vehicle information terminal through CAN communication, and then the vehicle information terminal transmits the data to the customer platform of the vehicle manufacturer. This method is mainly based on the CAN communication network of the traditional power chassis, the vehicle CAN communication network and the communication protocol. If new data collection or data interaction requirements are added in specific application scenarios, the original physical layer hardware and application layer protocol need to be greatly changed.

[0004] The main function of the new energy commercial vehicle vehicle information terminal is to collect relevant data of the new energy power system and energy management system and upload it to the data service platform.

[0005] The existing commercial vehicle information terminal mainly includes a main control unit, a power module, a signal monitoring, a communication positioning, an IO / AI signal collection, a communication positioning and the like. The vehicle sensor signals are mainly collected by the power chassis sensor, transmitted to the vehicle controller through the power system CAN communication network, and then transmitted to the vehicle information terminal by the vehicle controller through the vehicle CAN network, so as to realize information interaction of the internal network of the vehicle.

[0006] Currently, data from new energy vehicle information terminals is acquired from data sent by various nodes on the vehicle's CAN network. The CAN network for new energy commercial vehicles consists of numerous nodes, including the powertrain, energy management system, accessory control system, and electrical system. These nodes are primarily located in the vehicle's cab, cockpit, and power chassis. Adding chassis, trailer, or upper component measurement and control functions based on the application scenario requires significant adjustments to the existing network hardware and communication application layer software, resulting in limited flexibility. Furthermore, due to the large number of nodes on the vehicle's CAN network, a large amount of real-time data transmission is required to meet vehicle control requirements. Adding additional measurement and control nodes would increase network load, potentially impacting the transmission of critical data and posing potential power and safety risks. Therefore, there is an urgent need for an on-board information terminal for new energy heavy-duty commercial vehicles to address the challenges of existing technologies. Summary of the Invention

[0007] In order to solve the above problems, the purpose of the present invention is to provide an on-board information terminal for new energy heavy-duty commercial vehicles, which mainly solves the expanded application problems of data collection, data processing and computing power distribution of current new energy on-board information terminals. It can add data nodes without affecting the original functions of the on-board information system, improve the flexibility of data collection and access, and improve the security of data interaction.

[0008] In order to achieve the above technical objectives, the present application provides an in-vehicle information terminal for a new energy heavy-duty commercial vehicle, comprising:

[0009] MCU main control unit, and 4G / 5G communication module, human-computer interaction module, wireless communication module, data storage module, CAN communication module, GPS / Beidou dual-mode positioning module, power module electrically connected to the MCU main control unit, among which,

[0010] The 4G / 5G communication module communicates with the client server and transmits corresponding data according to the data interaction requirements between the client server and the new energy heavy-duty commercial vehicle;

[0011] The human-computer interaction module is used to realize human-computer interaction between new energy heavy-duty commercial vehicles and drivers;

[0012] The wireless communication module is used to provide wireless network access services for drivers;

[0013] The data storage module is used to record vehicle historical data to ensure the query and historical tracing of the operating data of new energy heavy-duty commercial vehicles;

[0014] The CAN communication module is used to realize data transmission with the controller of new energy heavy-duty commercial vehicles;

[0015] The GPS / Beidou dual-mode positioning module is used for realizing accurate positioning of the whole vehicle by using GPS / Beidou dual-mode technology, and providing a map service for the driver of the commercial vehicle by combining a commercial vehicle service map.

[0016] The power module is used for supplying power for the system.

[0017] Preferably, the MCU master unit is used for handing over the processing and operation of part of data to local processing according to the load condition of the MCU computing power, reducing the data transmission amount of the customer server, and saving network resources and server resources.

[0018] Preferably, the man-machine interaction module is also used for establishing a data interaction mode between devices in a Bluetooth, wifi, serial communication or Ethernet manner, and realizing man-machine interaction in a text, audio or video manner.

[0019] Preferably, the CAN communication module further comprises:

[0020] The reserved OBD diagnosis interface is used for accessing a whole vehicle diagnosis device, integrating a UDS diagnosis protocol, and realizing the diagnosis of faults and the online calibration of part of functions of the new energy heavy commercial vehicle through the vehicle information terminal.

[0021] The reserved distributed measurement and control node network interface is used for accessing a measurement and control node terminal through a distributed measurement and control node network, and providing a corresponding access scheme for the measurement and control equipment required for the expansion of the measurement and control requirement of the new energy heavy commercial vehicle.

[0022] Preferably, the power module is used for realizing a wide voltage working range of 9-36VDC, and providing a common working voltage of 5V and 3.3V for each module of the vehicle information terminal, wherein the power module has a low power consumption management function, and has working, standby and silent working states, only guarantees the transmission of basic data during the parking of the whole vehicle, and reduces the power consumption of the system.

[0023] Preferably, the vehicle information terminal is also used for performing data interaction with the distributed measurement and control terminal through a CAN communication protocol or a communication mode of Bluetooth, wifi or Ethernet.

[0024] The distributed measurement and control terminal performs data interaction with the whole vehicle measurement and control equipment module through the communication module of the measurement and control equipment, and selects a wired communication network or a wireless communication form according to the installation position condition of the whole vehicle measurement and control equipment, wherein each measurement and control equipment communication module and one or more measurement and control equipment form a measurement and control local area network, and are used for realizing complete data acquisition of certain whole vehicle equipment.

[0025] Preferably, the distributed measurement and control terminal is also used for adopting a self-defined communication protocol format, adopting master-slave mode communication in the communication protocol from the distributed measurement and control terminal to the vehicle information terminal, taking the distributed measurement and control terminal as a slave, and regularly sending data messages to the vehicle information terminal.

[0026] The vehicle information terminal sets corresponding priorities according to the communication mode and the task type of the measurement and control terminal; the communication message is composed of address information, device information, data information and verification information, etc.

[0027] The distributed measurement and control terminal sends address information and measurement and control device information to the vehicle information terminal through a distributed communication module; the vehicle information terminal communication module receives the information and corresponds to the information in the preset library, identifies the type, function, manufacturer and other production process traceability information of the measurement and control terminal, and realizes the plug-and-play function without increasing the workload of software changes.

[0028] The data information is the relevant data sent by the measurement and control terminal to the vehicle information terminal, including processed or original measurement and control data, and fault state information and maintenance information of the distributed measurement and control system.

[0029] The verification information is to verify the validity of the data transmission process, and if necessary, to increase the verification information of encrypted information in the special information transmission process.

[0030] Preferably, the master-slave communication mode is adopted between the distributed measurement and control terminal and the measurement and control device; the distributed measurement and control terminal sets corresponding priorities according to the communication mode and the task type of the measurement and control device.

[0031] The communication message is composed of address information, device information, data information and verification information, etc.

[0032] The measurement and control device sends address information and measurement and control device information to the distributed measurement and control terminal through a communication module; the measurement and control device communication module in the distributed measurement and control terminal receives the information and identifies the type, function, manufacturer and other production process traceability information of the measurement and control device.

[0033] The data information is the relevant data collected by the measurement and control device and sent to the distributed measurement and control terminal, as well as fault state information and maintenance information of the measurement and control device.

[0034] The verification information is to verify the validity of the data transmission process, and if necessary, to increase the verification information of encrypted information in the special information transmission process.

[0035] The master control unit of the distributed measurement and control terminal converts the data collected by the measurement and control device according to the format and requirements of the communication protocol of the vehicle information terminal, and can perform corresponding data calculation according to the functional requirements and the preset calculation model for the data collected by multiple measurement and control devices, localizes part of the operation function, reduces the demand for operation resources of the MCU master control unit of the vehicle information terminal, and improves the speed and reliability of data processing.

[0036] Preferably, the measurement and control equipment is used to exchange data with the distributed measurement and control terminal via wired or wireless communication;

[0037] The measurement and control equipment is also used to convert the collected external detection signals into digital signals through signal conversion, filtering, identification, and synthesis methods, and upload them to the distributed measurement and control terminal through the communication module.

[0038] Preferably, the measurement and control equipment also has the function of controlling the actuator, which is used to convert the digital signal sent by the distributed measurement and control terminal into a corresponding control signal to realize the control intention of the actuator.

[0039] The present invention discloses the following technical effects:

[0040] By adopting the present invention, it is possible to achieve the expansion convenience of measurement and control of new energy commercial vehicles in different application scenarios. At the same time, by adopting a customized communication protocol and preset information on the on-board information terminal or the data service terminal, it is possible to quickly realize automatic identification of newly connected measurement and control equipment, realize plug-and-play, and reduce manual software updates. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] 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. 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.

[0042] Figure 1 This is the functional module architecture of the vehicle-mounted information terminal of the present invention;

[0043] Figure 2 This is a schematic diagram of the distributed measurement and control terminal network of the present invention;

[0044] Figure 3 This is a schematic diagram of the intelligent measurement and control local area network described in the present invention. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0046] like Figures 1-3 As shown, the present invention is applied to the field of new energy heavy-duty commercial vehicles. Through the implementation of this solution, it is possible to flexibly formulate technical solutions for data collection, processing and data interaction that are suitable for the special data needs of new energy heavy-duty commercial vehicles in different application fields.

[0047] (1) Figure 1 As shown, the technical solution for vehicle information terminal:

[0048] The in-vehicle information terminal communicates with the client server via a 4G / 5G communication module, transmitting data based on the interaction between the client server and the vehicle. Depending on the computing load of the in-vehicle information terminal's MCU, some data processing and calculations can be localized, reducing the amount of data transmitted between the client and server, conserving network and server resources.

[0049] The in-vehicle information terminal is powered by the vehicle's 24V standby power supply, which operates over a wide voltage range of 9-36VDC. It also provides the 5V and 3.3V common operating voltages for the in-vehicle information terminal's modules. The power module features low-power management, with operating modes including active, standby, and silent. While the vehicle is parked, only basic data transmission is ensured, reducing system power consumption.

[0050] The in-vehicle information terminal realizes human-computer interaction between the vehicle and the driver through the human-computer interaction module. Data interaction between devices can be transmitted using Bluetooth, WiFi, serial communication or Ethernet, and human-vehicle interaction can be realized using text, audio or video.

[0051] The on-board information terminal provides wireless access methods such as Bluetooth and WiFi through the wireless communication module, establishes a vehicle wireless local area network, and provides wireless network access services for the driver.

[0052] The vehicle information terminal positioning module adopts a GPS / Beidou dual-mode technology module to realize accurate positioning of the whole vehicle, and in combination with a commercial vehicle service map module provided by a commercial vehicle map system service provider, professional commercial vehicle map services are provided for a pure electric commercial vehicle driver.

[0053] The vehicle information terminal is configured with a large-capacity data storage module, which can record long-term vehicle historical data and ensure the query and historical tracing of whole vehicle operation data.

[0054] The vehicle information terminal adopts a CAN communication module to realize data transmission with the whole vehicle controller. An OBD diagnostic interface is reserved to facilitate the access of a whole vehicle diagnostic device, and a UDS diagnostic protocol is integrated to realize the diagnosis of whole vehicle faults and the online calibration of part functions through the vehicle information terminal. A distributed measurement and control node network interface is reserved, and a measurement and control node terminal is accessed through the distributed measurement and control node network to provide a corresponding access scheme for the measurement and control equipment required for the expansion of new energy commercial vehicle measurement and control requirements.

[0055] (2) As shown in Figure 2 , the distributed measurement and control network technical solution:

[0056] The distributed measurement and control terminal generally adopts a CAN communication protocol to interact with the vehicle information terminal, and can also adopt a Bluetooth, wifi or Ethernet communication mode to interact with the vehicle information terminal.

[0057] The communication protocol of the distributed measurement and control terminal adopts a self-defined communication protocol format, and increases function codes and other related protocol fields in the protocol message. The vehicle information terminal automatically identifies and analyzes according to the preset information to realize the plug-and-play function, avoiding manual software updates each time due to the addition of measurement and control equipment and measurement and control nodes.

[0058] The distributed measurement and control terminal interacts with the whole vehicle measurement and control equipment module through the measurement and control equipment communication module, and can select wired communication network or wireless communication form according to the conditions of the installation position of the whole vehicle measurement and control equipment. Each measurement and control equipment communication module can form a measurement and control local area network with one or more measurement and control equipment to realize complete data acquisition of a certain equipment.

[0059] The main control unit of the distributed measurement and control terminal can process the data collected by the measurement and control equipment or convert the protocol. The data collected by a certain measurement and control local area network is preprocessed, part of the operation function is localized, the demand for operation resources of the MCU main control unit of the vehicle information terminal is reduced, and the speed and reliability of data processing are improved.

[0060] (3) As shown in Figure 3 , the intelligent measurement and control local area network technical solution:

[0061] The measurement and control equipment can use wired communication (such as CAN bus, industrial bus, serial bus or Ethernet, etc.) or wireless communication (such as Bluetooth, WiFi, etc.) to exchange data with distributed measurement and control terminals.

[0062] The measurement and control equipment collects external detection signals through sensors or other video, audio and other signal acquisition methods, converts them into digital signals through signal conversion, filtering, recognition, synthesis and other methods in the signal processing unit, and uploads them to the distributed measurement and control terminal through the communication module.

[0063] The measurement and control equipment also has the function of controlling the actuator. The data is transmitted to the measurement and control equipment through the measurement and control terminal and the communication module of the measurement and control equipment. The digital signal is converted into a corresponding control signal through the signal processing unit to realize the control intention of the actuator.

[0064] The present invention realizes automatic identification of newly connected measurement and control equipment and realizes plug-and-play through a user-defined communication protocol and preset information of an on-board information terminal or a data service terminal.

[0065] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0066] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. An on-board information terminal for a new energy heavy-duty commercial vehicle, characterized in that: include: MCU main control unit, and 4G / 5G communication module, human-computer interaction module, wireless communication module, data storage module, CAN communication module, GPS / Beidou dual-mode positioning module, and power module electrically connected to the MCU main control unit, wherein: The 4G / 5G communication module communicates with the client server and transmits corresponding data according to the data interaction requirements between the client server and the new energy heavy-duty commercial vehicle; The human-computer interaction module is used to realize human-computer interaction between the new energy heavy-duty commercial vehicle and the driver; The wireless communication module is used to provide wireless network access services for the driver; The data storage module is used to record vehicle historical data to ensure the query and historical tracing of the operating data of the new energy heavy-duty commercial vehicle; The CAN communication module is used to realize data transmission with the controller of the new energy heavy-duty commercial vehicle; The GPS / Beidou dual-mode positioning module is used to achieve accurate vehicle positioning using GPS / Beidou dual-mode technology, and provide commercial vehicle map services to drivers by combining commercial vehicle service maps; The power module is used to supply power to the system; The vehicle-mounted information terminal is also used to exchange data with the distributed measurement and control terminal through the CAN communication protocol or Bluetooth, WiFi, Ethernet communication; The distributed measurement and control terminal exchanges data with the vehicle measurement and control equipment module through the communication module of the measurement and control equipment. According to the conditions of the installation location of the vehicle measurement and control equipment, a wired communication network or a wireless communication form is selected. The communication module of each measurement and control equipment and one or more measurement and control equipment form a measurement and control local area network for realizing complete data collection of a certain vehicle equipment. The distributed measurement and control terminal is further configured to adopt a customized communication protocol format, wherein a master-slave mode of communication is adopted in the communication protocol between the distributed measurement and control terminal and the vehicle information terminal, wherein the distributed measurement and control terminal acts as a slave and regularly sends data messages to the vehicle information terminal; The vehicle information terminal will set the corresponding priority according to the communication mode and the task type of the measurement and control terminal; the communication message consists of address information, device information, data information and verification information; The distributed measurement and control terminal sends address information and measurement and control equipment information to the on-board information terminal through the distributed communication module. After receiving the information, the on-board information terminal communication module matches it with the information in the preset library to identify the type, function, manufacturer and other production process traceability information of the measurement and control terminal, realizing plug-and-play function without increasing the workload of software changes. Data information is the relevant data sent by the measurement and control terminal to the vehicle information terminal, including processed or original measurement and control data, as well as fault status information and maintenance information of the distributed measurement and control system; Verification information is used to verify the validity of data during transmission, and to add verification information to encrypted information during special information transmission.

2. The vehicle-mounted information terminal for a new energy heavy-duty commercial vehicle according to claim 1, characterized in that: The MCU main control unit is used to localize the processing and calculation of part of the data according to the load of the MCU computing power, thereby reducing the data transmission volume of the client server and saving network resources and server resources.

3. The vehicle-mounted information terminal for a new energy heavy-duty commercial vehicle according to claim 2, characterized in that: The human-computer interaction module is also used to establish a data interaction mode between devices using Bluetooth, WiFi, serial communication or Ethernet, and to achieve human-vehicle interaction using text, audio or video.

4. The vehicle-mounted information terminal for a new energy heavy-duty commercial vehicle according to claim 3, characterized in that: The CAN communication module also includes: An OBD diagnostic interface is reserved for accessing vehicle diagnostic equipment, integrating the UDS diagnostic protocol, and enabling fault diagnosis of the new energy heavy-duty commercial vehicle and online calibration of some functions through the on-board information terminal; A distributed measurement and control node network interface is reserved for accessing the measurement and control node terminal through the distributed measurement and control node network, providing a corresponding access solution for the measurement and control equipment required to expand the measurement and control needs of the new energy heavy-duty commercial vehicle.

5. The vehicle-mounted information terminal for a new energy heavy-duty commercial vehicle according to claim 4, characterized in that: The power module is used to achieve a wide voltage operating range of 9-36VDC, providing common operating voltages of 5V and 3.3V for various modules of the vehicle information terminal. Among them, the power module has a low-power management function and has working, standby, and silent working states. When the vehicle is parked, it only guarantees the transmission of basic data, reducing system power consumption.

6. The vehicle-mounted information terminal for a new energy heavy-duty commercial vehicle according to claim 1, characterized in that: The distributed measurement and control terminal and the measurement and control equipment adopt a master-slave communication mode, and the distributed measurement and control terminal will set the corresponding priority according to the communication mode and the task type of the measurement and control equipment; The communication message consists of address information, device information, data information and verification information; The measurement and control equipment sends address information and measurement and control equipment information to the distributed measurement and control terminal through the communication module. After receiving the information, the measurement and control equipment communication module in the distributed measurement and control terminal identifies the type, function, manufacturer and other production process traceability information of the measurement and control equipment; Data information is the relevant data collected by the measurement and control equipment and sent to the distributed measurement and control terminal, as well as the fault status information and maintenance information of the measurement and control equipment; Verification information is used to verify the validity of data transmission and to add verification information to encrypted information during special information transmission. The main control unit of the distributed measurement and control terminal converts the data collected by the measurement and control equipment into a protocol according to the format and requirements of the communication protocol of the on-board information terminal, performs corresponding data calculations on the data collected by multiple measurement and control devices according to functional requirements and preset calculation models, and localizes some computing functions to reduce the demand for computing resources of the MCU main control unit of the on-board information terminal and improve the speed and reliability of data processing.

7. The vehicle-mounted information terminal for a new energy heavy-duty commercial vehicle according to claim 6, characterized in that: The measurement and control equipment is used to exchange data with the distributed measurement and control terminal through wired communication or wireless communication; The measurement and control equipment is also used to convert the collected external detection signals into digital signals through signal conversion, filtering, identification and synthesis methods, and upload them to the distributed measurement and control terminal through the communication module.

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