35 results about "CCP protocol" patented technology

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 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.

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 discloses an automatic calibrating apparatus and a method based on a CCP (CAN (Controller Area Network) Calibration Protocol) protocol, relating to the technical field of automobile electronic control. The apparatus comprises a control module which is used for calibrating a device to be calibrated depending on a calibrating parameter; a storage module which is connected with the control module and is used for storing the calibrating parameter; and a communication module which is connected with the control module and is used for realizing communication between the control module and the device to be calibrated. According to the apparatus and the device, the device to be calibrated is calibrated by regulating a proportion coefficient between a theoretical circuit parameter of the apparatus to be calibrated and an actual circuit parameter; the apparatus and the device are suitable for calibrating electronic control units (ECU) of various cars, and are capable of satisfying requirements of rapid speed, accurate operation and high reliability in the offline production of the ECU.

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.

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 provides a method for calibrating electronic control units of automobiles on the basis of a CCP [CAN (controller area network) calibration protocol]. The method includes reading current S19 files in first memories and explicitly writing mapping addresses and initial values of various implicitly stored calibration parameters into a second S19 files; parsing the second S19 files, acquiring the mapping addresses and the initial values of the various calibration parameters, calibrating the to-be-calibrated electronic control units of the automobiles in an online manner after calibration commands are received, and acquiring calibration parameter values which are calibrated in the online manner; replacing the initial values of the various calibration parameters in the current S19 files in the first memories by the various calibration parameter values which are calibrated in the online manner. The method has the advantages that the complexity of a system for calibrating the ECU (electronic control units) of the automobiles can be reduced, and the production cost and the labor cost can be lowered.

The invention is suitable for the technical field of vehicles and provides a vehicle data acquisition terminal. The vehicle data acquisition terminal comprises a main control module, an analog quantity acquisition module, a CAN (Controller Area Network) acquisition module and a wireless communication module, wherein the analog quantity acquisition module, the CAN acquisition module and the wireless communication module are respectively connected with the main control module; the main control module is used for controlling the analog quantity acquisition module, the CAN acquisition module and the wireless communication module to work; the analog quantity acquisition module is used for acquiring analog quantity parameter information of a vehicle; the CAN acquisition module is used for acquiring first parameter information of a CAN bus of the vehicle and reading second parameter information in corresponding memories in all controllers of the vehicle through a CCP (CAN Calibration Protocol); and the wireless communication module is used for transmitting the analog quantity parameter information, the first parameter information and / or the second parameter information to a server in a wireless communication way. Accordingly, the invention further provides a vehicle information acquisition system comprising the vehicle data acquisition terminal. Therefore, according to the vehicle data acquisition terminal and the vehicle information acquisition system, the parameter information in the corresponding memories in all the controllers of the vehicle can be acquired through the CCP protocol, so that the information acquisition scope is enlarged.