34 results about "CCP protocol" patented technology

A calibration method based on CCP protocol for the controller of electric car with mixed power features that between the low-class controller and upper-class host, which are connected via CAN bus, the upper-class host can initialize the low-class controller and calibrate and monitor its parameters according to CCP protocol.

An embedded universal calibration device and method based on CCP protocol is disclosed. Said device is composed of a high-level calibrating tool running on PC for displaying the parameters to be monitored in ECU and sending commands to low-level unit, and a low-level unit running on the ECU to be calibrated for receiving the commands, executing the relative actions, returning the answer, and periodically sending the parameters to be monitored. Said high-level calibrating tool and low-level unit are connected via USB, CAN interface and CAN bus and the CN packets are used to calibrate and monitor the parameters in ECU.

The invention relates to a universal calibration device for protecting a vehicle electron control unit and relates to the control technology of vehicle electron. The calibration device which is designed by the invention and used as the middle layer of an upper computer calibration system and an electronic control unit is independent of the electric control unit, and comprises the calibration SCM and the double-interface RAM of an expanded CAN communication interface; the calibration SCM follows a CCP protocol and is communicated with the upper computer calibration system by the expanded CAN communication interface; calibration parameters and measuring parameters are stored in the double-interface RAM; the calibration SCM and the electric control unit share the parameters in the double-interface RAM. The calibration device has commonality which can be very conveniently integrated with the vehicle electron control unit and the upper computer calibration software (such as CANape, INCA), overcomes the defects of large developing working load and poor commonality of the prior art and improves the efficiency for the work of developing and calibration.

The invention discloses an ECU online program upgrading system and an ECU online program upgrading method based on a CAN bus. The ECU online program upgrading system comprises a PC, a CAN card and a vehicle-mounted embedded control unit ECU, wherein the PC is provided with a host application program; one end of the CAN card is connected with the PC through a USB interface; the other end of the CAN card is connected with the vehicle-mounted embedded control unit ECU through the CAN bus; the vehicle-mounted embedded control unit ECU is provided with a lower computer Bootloader program for boot load; the communication protocol of host software and the lower computer Bootloader program is compiled based on standard CCP protocol. According to the ECU online program upgrading system and the ECU online program upgrading method based on the CAN bus, online program upgrading of the ECU can be achieved through the CAN bus, the ECU does not need to be dismounted from a vehicle, but only one end of the CAN card is connected with the USB interface of the PC and the other end of the CAN card is connected with the CAN bus of the ECU, then the ECU program can be upgraded through the host software, no extra hardware is needed, and thus the operation is very convenient and rapid.

Methods and apparatus are presented for enabling data connectivity when a handoff occurs between one communication network and another communication network, wherein the communication networks belong to different air interface standards. The mobile station triggers a Compression Control Protocol (CCP) request message to a tethered device if the mobile station determines that a new PDSN is not enabled to perform the CCP protocol. The tethered device then responds with a CCP request message with or without new negotiation parameters. The mobile station forwards the CCP request message to the new PDSN. Since the new PDSN is not enabled with CCP, the new PDSN responds with a CCP rejection message. The rejection message is passed from the mobile station back to the tethered device. The tethered device then sends uncompressed data packets to the PDSN.

The invention disclose an electric vehicle electromotive air conditioner controller software refreshing system and method. The method specifically comprises the steps of adopting a vehicle air conditioner software refreshing system upper computer developed by a Labview to send an application program to be updated to a CAN bus, making a Bootloader bootstrap program which is stored in a vehicle air conditioner controller beforehand receive the application program to be updated under a downloading mode and store the application program to be updated in a memory, and loading the application program in a loading mode to complete software updating. The program is updated through the CAN bus, the efficiency and maneuverability of system upgrade are improved, an existing CAN network resource on the vehicle can be directly utilized, and thus the cost and the labor are saved; an instruction of which part is related to the safety in a CCP protocol is given for reference, an extended instruction is customized aiming at a Bootloader principle to be used as a communication protocol at the same time, the safe mechanism of the CCP protocol is made full use of, and the communication process is simplified. Through self-developed mating upper computer software and the Bootloader bootstrap program, the whole set of the system is fast, convenient and simple to use.

The invention discloses a system and a method for automatically calibrating the dynamic performance of new energy vehicles on the basis of CCP [CAN (controller area networks) calibration protocols] and sensors. The system comprises a CCP calibration device, the measuring sensors, calibration databases and automatic analysis and calibration programs. The method includes steps that 1, initial data are computed by the aid of a computer according to selective types, and data are written into VCU (vehicle control units) by the aid of CAN network analysis programs; 2, CCP calibration systems comprise CAN network analyzers and CCP calibration software; 3, messages of multi-channel CAN are simultaneously received and transmitted by the aid of the CAN network analyzers; 4, A2L files and DBC (database computer) files are parsed by the aid of the CCP calibration software; 5, the measuring sensors include vehicle speed sensors, acceleration sensors and tilt angle sensors; 6, the calibration databases include calibration data acquisition databases and calibration data optimization databases; 7, the automatic analysis and calibration programs include data analysis programs and calibration parameter optimization programs. The system and the method have the advantages that calibration workload can be relieved to a great extent, the manual analysis and computation time can be shortened to a great extent, and the calibration accuracy and efficiency can be improved.

The invention provides a picture switch control method of an automobile panoramic image system. With the picture switch control method of the automobile panoramic image system, the distraction of a driver can be prevented, and a current interface can be quickly and accurately switched to a required view interface, and driving safety can be can be increased. The picture switch control method of the automobile panoramic image system of the invention includes the following steps of: entering a 360-degree panoramic image display system, and displaying a view interface and a switch menu on a vehicle multimedia display screen; operating an eight-direction knob located at a central channel to generate knob control signals, and acting the knob control signals on the switch menu through a CCP protocol, and performing switch control on the view interface.

The invention provides a programming device of a vehicle controller. The programming device comprises a communication interface which is a controller local area network CAN bus interface and connected with the vehicle controller, and a controller, the controller sends a transmission mode starting instruction to the vehicle controller via the communication interface so as to control the Boot loader of the vehicle controller to enter a transmission mode, and then analyzes an application program file to be programmed to obtain data information and sends the data information to the vehicle controller by virtue of a predetermined number of continuous data frames to program the vehicle controller. The programming device of the vehicle controller is compatible with a plurality of CAN communication conversion tools, and capable of checking and recording CAN data in real time and displaying the CAN data by virtue of a progress bar. Under the circumferences of a certain Baud rate and the same application file, in contrast with a programming tool based on CCP (CAN Calibration Protocol), the programming device of the vehicle controller has the advantages of few response times of the controller, short data transmission time and high working efficiency.

The invention discloses an SCR system INCA calibration platform based on a CCP protocol and a development method thereof. The INCA calibration platform comprises realization of the CCP protocol, making of an A2L file and calibration platform verification for verifying realization of the CCP protocol and effectiveness of making of the A2L file, wherein realization of the CCP protocol comprises protocol analysis and software coding; making of the A2L file comprises variable production and file configuration; and calibration platform verification comprises an analog ECU, an SCR system, hardware ETAS581 and INCA7. 0 software. Therefore, mainstream calibration software can carry out calibration of the controller through the communication protocol conveniently; the SCR system INCA calibration platform based on the CCP protocol and developed through INCA calibration can realize functions of data uploading and downloading, monitoring and calibration, and monitoring of data change in DCU; existing resources are fully utilized; efficiency of calibration is improved; calibration period is reduced; and calibration process is regulated.

The invention discloses a CCP protocol-based ECU driving record acquisition device and a CCP protocol-based ECU driving record acquisition method. The device comprises a single chip microcomputer module, a power module, a CAN module, an SD card module and an operating button group, wherein one end of the CAN module is connected with a to-be-acquired ECU and the other end of the CAN module is connected with a single chip microcomputer module; and the power module, the SD card module and the operating button group are electrically connected with the single chip microcomputer module. The CCP protocol-based ECU driving record acquisition device, serving as an auxiliary tool in the finished automobile calibration process, directly establishes communication with the ECU, can completely meet the requirement that an engineer only needs to acquire some important parameters and does not need to calibrate the occasion, is convenient and quick in operation, and reduces manpower and equipment costs. The CCP protocol-based ECU driving record acquisition device is small in size and convenient to carry and operate, one driver can finish road test work in the driving process, and the acquired engine and finished automobile data are finally stored by the SD card in real time.

The invention discloses a configuration method and device for collected data of a vehicle-mounted terminal. The vehicle-mounted terminal is used for collecting data of two ECUs, the two ECUs comprisea master ECU and a slave ECU, and the method comprises the steps of acquiring configuration information; configuring data sending channels of the master ECU and the slave ECU according to the configuration information based on an XCP or CCP protocol; performing data acquisition on the master ECU and the slave ECU configured with the data sending channel through a CAN bus; distinguishing whether the acquired data information is from the master ECU or the slave ECU based on the interface number of the CAN bus; and storing the data information of the distinguished data sources in a database. Theproblem that the storage synchronism of the two vehicle-mounted terminals to the acquired data is difficult to guarantee when the two vehicle-mounted terminals acquire the dual-ECU data in the prior art is solved.

The invention discloses a variable information configuration method and device. The method comprises the steps of acquiring a variable list wherein the variable list comprises a plurality of variablesand the length of each variable; splitting each variable based on the length of each variable to obtain a plurality of variables with target byte lengths; and packaging the plurality of variables with the target byte length according to a preset rule, and transmitting the packaged message in a CAN bus based on an XCP protocol or a CCP protocol. The problem of low CAN message data transmission utilization rate based on an XCP protocol or a CCP protocol in related technologies is solved.