119 results about "Local Interconnect Network" patented technology

The invention relates to an infrared vehicle interior environmental monitoring system based on a controlled area network (CAN) / local interconnect network (LIN) bus. The infrared vehicle interior environmental monitoring system based on the CAN / LIN bus comprises a senor, a signal processing module, an analog / digital (A / D) conversion circuit, an electronic control unit (ECU) system, a vehicle-mounted computer, a CAN / LIN data bus, an alarming circuit, a liquid crystal display (LCD) module, a wireless communication module and a power source. Signals obtained by the sensor are processed through the signal processing module at first, and then are converted through the A / D conversion circuit to be input to the ECU system to be processed. The ECU system carries out synthetic judgment by combining sensor information and vehicle state information obtained through the CAN / LIN bus from the vehicle-mounted computer. When the ECU system finds that an environment is poor or a person / life is left and vehicle doors are locked inside a vehicle, the ECU system starts the alarming circuit to give an alarm, a message prompt is sent through the wireless communication module and an instruction is sent to the vehicle-mounted computer through the CAN / LIN bus, and the vehicle-mounted computer adjusts vehicle windows or controls starting of an air conditioner and outer circulation of the air conditioner. The power source supplies power for parts. According to the infrared vehicle interior environmental monitoring system based on the CAN / LIN bus, a safety guarantee is provided for the person who does not want to stay in the vehicle, and accidents are avoided.

The invention provides an automobile body control function automatic test apparatus and a method thereof, mainly solving problems that a hand-operated test has large time consumption, low efficiency and poor repeatability and special control logics and time sequences can not be tested. The apparatus is composed of a host computer, a signal conditioning plate, a tested controller and a load box. The host computer is connected with the signal conditioning plate through an output interface of the host computer. An output signal is processed by the signal conditioning plate and is sent to the tested controller. A CAN (Controller Area Network) interface and an LIN (Local Interconnect Network) interface of the host computer connect with the tested controller, and send and receive CAN and LIN bus information needed by the test controller. A driving output of the tested controller connects with the load box, and sends a driving signal generated by connection to an input interface of the host computer after processing of the signal by the signal conditioning plate. The apparatus in the invention has the characteristics of clear structure, low cost, and reliable performance, and can carry out a comprehensive automatic test on a control function of the controller so as to eliminate potential safety hazard possibly brought by logic and sequential errors.

A slave node for use with a Local Interconnect Network (LIN network) receives incoming messages from the LIN network in a manner that reduces operating current, power consumption and / or operating temperature. The slave node generally includes an input circuit, an electronic processing device, associated components such as an Integrated Glass Fog Sensor (IGFS) unit, and a transmitting device all mounted on a single circuit board. The input circuit, which can either be separate from or incorporated within the electronic processing device, pre-filters an incoming message from a LIN bus such that it only wakes the transmitting device out of its low-current sleep mode when required. Stated differently, the transmitting device is removed from an incoming message path so that it is only active when it is transmitting an outgoing message.

The invention relates to a power management system and a control method for an automobile body controller thereof. In the invention, refine control for the load of automobile electrical equipment and management for a starter and a generator are realized; a controller area network (CAN) / local interconnect network (LIN) bus is utilized to monitor the power utilization states of the generator, storage batteries and an whole automobile; the voltage of the generator is regulated to realize dynamic charge and discharge for the electric quantity of the storage batteries; and large current loading iscut off in accordance with the dynamic states of the automobile, thus effectively reducing the oil consumption of the automobile, and decreasing the volumes of the storage batteries. A body control module (BCM) is integrated with the functions, thus not only avoiding increasing electronic modules, but also being simple in switching and strengthening the practicability of the power management system.

The invention provides an intelligent anti-theft device of an automobile based on an in-vehicle communication system, comprising a body control module (BCM) and an in-vehicle communication system. The BCM acquires the vehicle window state and the anti-clamping information sent by a vehicle window anti-clamping module via an LIN (Local Interconnect Network) bus and receives remote control information at the same time to carry out anti-theft setting on the vehicle; the anti-theft setting information and the window and door information are sent to the in-vehicle communication system by a controller area network (CAN) bus. The in-vehicle communication system acquires the concerned automobile parameters of users, including window and door information, fuel amount and tire pressure via the CAN bus; the whole vehicle is positioned by an integrated global positioning system (GPS) functional module; the vehicle positioning information and the acquired information are informed to the users in time by an integrated global system for mobile communication (GSM) functional module, so that the intelligent anti-theft effect of the vehicle is realized.

The invention discloses an AGV (automatic guided vehicle) control platform having a distributed structure, which comprises a main node and three secondary nodes which are communicated through LIN (local interconnect network) bus bidirectional data, wherein the three secondary nodes are mutually independent and all have LIN interface modules for communicating with the main node based on the LIN bus communication and specific local identifiers; the main node comprises a main control board, an LIN interface module, an infrared tracking module, a motor driving module and a power supply module; and each secondary node comprises a driven control board for controlling and feeding back the AGV running and acquiring the tracking information for the main node to process procedures, an ultrasonic barrier-avoiding module, a temperature detection module, a vehicle acceleration inclining-detection module, a vehicle infrared left-wheel speed-measuring module, an electric quantity detection module and a vehicle infrared right wheel speed-measuring module. By using the LIN bus technique to realize the connection between sensors in the AGV system, the wires are reduced while the maintaining cost is lowered. Because of the high reliability and high anti-interference property, the whole system is more stable and reliable.

The invention belongs to the field of motor vehicle intelligent control, and provides an automatic cleaning system for a front windshield of a motor vehicle and a cleaning method thereof. The method comprises the following steps: a sensor node is used for collecting detection data of rain water on the front windshield, data of light intensity inside and outside the front windshield, data of temperature and humidity both inside and outside the front windshield and real-time image frames of the front windshield; a truck-mounted real-time unit comprehensively analyze the collected data, and timely sends out control information according to the analysis result; the local interconnect network automatically cleans the front windshield from a machine node according to the control information sent by the truck-mounted real-time unit, so that compared with the prior art, the automatic cleaning system and the method have the advantages that more factors causing driving danger can be considered, the driving potential safety hazards are reduced, and the experience of safely driving of a driver is improved.

A transceiver suitable for interfacing a logic device to a shared bus includes a transmit node that receives an input signal from the logic device and an I / O node, that is coupled to the shared bus. The transceiver may be designed for use with a shared-bus, single master, multiple slave architecture, e.g., a Local Interconnect Network (LIN). In a LIN compliant implementation, the transceiver may be suitable for use in at least some types of automobiles and other motorized vehicles. Control logic coupled to the transmit node may assert a current driver enable signal in response to detecting an assertion of the input signal. A current driver of the transceiver is configured to draw a time varying driver current from the shared bus node after detecting an assertion of the current driver enable signal. The driver current may cause a sinusoidal transition of the shared bus voltage.

The invention relates to a controller area network (CAN) and local interconnect network (LIN) bus-based vehicular network communication device. The CAN and LIN bus-based vehicular network communication device is characterized by comprising a CAN main network, a CAN subnetwork, an LIN and CAN and LIN gateways, wherein nodes in the CAN main network need to communicate with a plurality of other nodes; the nodes in the CAN subnetwok have high signal real-time and higher transmitting frequency, and occupy more occupied bandwidth; the nodes in the LIN have low communication speed and lower real-time; and the CAN and LIN gateways are integrated in a body control module (BCM) and exchange information required in communication between a CAN and the LIN.

A slave node for use with a Local Interconnect Network (LIN network) receives incoming messages from the LIN network in a manner that reduces operating current, power consumption and / or operating temperature. The slave node generally includes an input circuit, an electronic processing device, associated components such as an Integrated Glass Fog Sensor (IGFS) unit, and a transmitting device all mounted on a single circuit board. The input circuit, which can either be separate from or incorporated within the electronic processing device, pre-filters an incoming message from a LIN bus such that it only wakes the transmitting device out of its low-current sleep mode when required. Stated differently, the transmitting device is removed from an incoming message path so that it is only active when it is transmitting an outgoing message.

The invention discloses a bluetooth automobile body controller having a bluetooth wireless communication function. The bluetooth automobile body controller comprises a microprocessor, a signal detection circuit, an output driving circuit, a local interconnect network (LIN) communication module, a bluetooth module, a power supply module and a voice starting key, wherein the signal detection circuit, the output driving circuit, the LIN communication module, the bluetooth module, the power supply module and the voice starting key are connected with the microprocessor respectively. The invention also discloses a bluetooth automobile body control system. The control system comprises the bluetooth automobile body controller and a bluetooth smart mobile phone having a voice recognition function, wherein the bluetooth automobile body controller is in bluetooth wireless connection with the bluetooth smart mobile phone. According to the bluetooth automobile body controller and the bluetooth automobile body control system, the bluetooth technology and the automobile body control technology are integrated, the voice recognition technology of the smart mobile phone serves as a carrier, switching control of door locks, light, windshield wipers and automobile windows can be achieved, voice control can be achieved, and the mobile phone can remind a user when the user leaves without locking automobile doors, so that the controllability and the intellectualization of an automobile can be greatly improved.

The present invention relates to an integrated circuit device for controlling LIN slave nodes based on a control signal transmitted by a LIN master control device. The IC device comprises a slave node circuit for processing the control signal when received in the form of a LIN message frame via a first data line terminal. The IC device also comprises a master node circuit for processing further control signals to be transmitted in the form of LIN message frames via a second data line terminal to the LIN slave nodes. The IC device also comprises a processing unit for controlling the LIN slave nodes based on the control signal by composing the further control signals.

A communication method is implemented in an on-board network between a master station (M) and a plurality of slave stations (S1, S2, S3, S4), of the type of those compatible with the standard Local Interconnect Network (LIN) protocol in which data frames are sent by the slave stations on a serial bus in response to the sending by the master station of identifiers (4, 6) representative of the required content of the frames. All (7) or part of each of the specific data frames attached to the same predetermined identifier (4, 6) is formed sequentially by each of the slave stations. This enables an optimisation of the load on a LIN network, thus enabling use of this economical standard for all “passenger compartment functions”, and in particular for the management of AFS type advanced lighting systems.

The invention relates to a method used for detecting the open circuit of wires with invariable wiring harness in an automobile intelligent electronic system. The method comprises the following steps: 1) installing a diagnostic module in diagnostic CAN nodes in a CAN in a CAN / LIN (Controller Area Network / Local Interconnect Network) secondary network; 2) converting the structure diagram of the CAN / LIN secondary network into a topological diagram thereof, and pre-setting the topological diagram thereof in the diagnostic module; 3) defining the target nodes in the topological diagram, and pre-setting the defined target nodes in the diagnostic module; 4) locating the target path collection of all the non-target nodes in the topological diagram to corresponding target nodes by the diagnostic module; 5) judging the state of each non-target node by the diagnostic module according to the information sent from other CAN nodes in the CAN and the gateway nodes in the LIN; 6) judging the state of the corresponding edge by the diagnostic module according to step 5); 7) calculating and summing up the failure frequency of each edge by the diagnostic module according to step 6); and 8) locating the edge with the maximum failure frequency as the open-circuit location of the wires according to the step 7), and sending the open-circuit location to the display screen at the diagnostic CAN node for displaying by the diagnostic module. The detection result of the invention is accurate. Therefore, the method can be widely applicable to the line detection of various automobile intelligent electrical systems.

An electrical and electronic system having a control unit connected to a remotely located electrical center by way of a data bus. The electrical center includes a bus interface unit and a main printed circuit board having a plurality of control devices such as relays, which selectively activate vehicle electrical circuits based on instructions from the control unit. The bus interface unit is that of a daughter board configured to be plugged into the main board of the electrical center, such as a Local Interconnect Network (LIN) interface board, and the data bus may be a LIN bus.

A transceiver suitable for interfacing a logic device to a shared bus includes a transmit node that receives an input signal from the logic device and an I / O node, that is coupled to the shared bus. The transceiver may be designed for use with a shared-bus, single master, multiple slave architecture, e.g., a Local Interconnect Network (LIN). In a LIN compliant implementation, the transceiver may be suitable for use in at least some types of automobiles and other motorized vehicles. Control logic coupled to the transmit node may assert a current driver enable signal in response to detecting an assertion of the input signal. A current driver of the transceiver is configured to draw a time varying driver current from the shared bus node after detecting an assertion of the current driver enable signal. The driver current may cause a sinusoidal transition of the shared bus voltage.

A vehicle-trailer system is disclosed. The system utilizes a controller that has a processor, a global positioning system that provides a geographic position to the processor, a data transmission device that sends and receives data through the controller and a camera signal encoder. The system also includes various three-dimensional (3-D) position sensors, which measure changes in spatial position with reference to location on three axes (e.g., 3-D compass comprising a magnetometer, a gyroscope, and an accelerometer). Moreover, the system comprises a vehicle network bus reader that communicates vehicle information from the vehicle network bus to the controller (e.g., controller area network (CAN) bus, or a local interconnect network (LIN) bus) wherein the controller is capable of communicably coupling to a remote client device, the remote client device configured to convey steering instructions.

The invention relates to an intelligent windshield wiper controller based on fuzzy control, comprising a rainfall sensor and an F330 controller, wherein the F330 controller is designed as a fuzzy controller; the rainfall sensor inputs a signal for detecting whether raindrops exist on a windshield and detecting rainfall into the fuzzy controller after the signal is subjected to A / D (analog / digital) conversion; and the fuzzy controller judges the current rainfall according to the signal, and outputs a pulse-width modulation (PWM) signal by combining with user setting information from an LIN (local interconnect network) bus to control the swinging speed of a wiper motor and drive a wiper mechanism to wipe rain on the windshield. The intelligent windshield wiper controller based on the fuzzy control technology has the core designed as the fuzzy controller, and the fuzzy controller is used for replacing the traditional PID (proportion integration differentiation) controller, thus the nonlinear signal of the rainfall sensor can be preferably processed, and the influence of the large-range variation of load parameters and nonlinear factors on a system can be overcome.

The invention designs an automobile lamp control system based on an LIN (Local Interconnect Network) bus. The automobile lamp control system consists of a CAN (Controller Area Network) bus, an LIN bus, a main node (CAN-LIN gateway), four slave nodes (front-left, back-left, front-right and back-right automobile lamp nodes), a CAN receiving-transmitting wire and five LIN transceivers, so that real-time accurate control on an automobile lamp can be realized, the wiring complexity degree inside an automobile is lowered, and the reliability and intelligence of the automobile lamp control system are improved.

One aspect of the invention relates to a network node for connecting to a Local Interconnect Network (LIN). In accordance with one example of the present invention, the network node includes a bus terminal which is operably coupled to a data line for receiving a data signal, which represents serial data, via that data line. The data signal is a binary signal having high and low signal levels. The network node further includes a receiver circuit which employs a comparator to compare the data signal with a reference signal. The comparator generates a binary output signal representing the result of the comparison. The network node also includes a measurement circuit that receives the data signal and provides a first voltage signal such that it represents the high signal level of the data signal.

The invention discloses a universal test tool for an autobody electronic unit and a working method thereof. The universal test tool comprises an upper computer and a lower computer which are in communication through a USB connecting wire, wherein the lower computer further comprises a multi-channel digital input port, a multi-channel digital output port, an eight-channel pulse input port, an eight-channel PWM (Pulse-Width Modulation) output port, a two-channel CAN (Controller Area Network) bus interface, a two-path LIN (Local Interconnect Network) bus interface, a programmable controllable power supply, an embedded-type minimum system, a parallel-to-series interface and a series-to-parallel interface, wherein signals of the multi-channel digital input port are sent to the parallel-to-series interface; and the signals of the series-to-parallel interface are sent to the multi-channel digital output port. According to the invention, with different connection manners between different upper computer test software and tested units, not only is the test respectively for development process and production process of tested automotive electronic units realized by specific test software, but also different test software can be selected for the test of the different automotive electronic units.

The invention provides an automobile combined switch system, which comprises a controller, a mechanical switch, an LIN (Local Interconnect Network) interface and a CAN (Controller Area Network) interface, wherein the controller is connected with the mechanical switch, the LIN interface and the CAN interface respectively; the controller is used for receiving driving signals from the mechanical switch, also can be connected with a plurality of extension switches through the LIN interface, and is used for receiving extension control signals through the extension switches, generating driving signals according to the driving signals and the extension signals, and outputting the driving signals to a BCM (Body Control Module) of an automobile through the CAN interface to control each sub-system of the automobile. The LIN can be connected with the plurality of extension switches, so that the extendibility of the automobile combined switch system is high, and the problems of single function and poor extendibility of the conventional automobile combined switch can be well solved.

The invention relates to an optical network-based automobile electric system. The optical network-based automobile electric system comprises a main optical fiber, a sensor, an optical receiving and transmitting assembly, a gateway and a peripheral assembly of an automobile, wherein an electric signal measured by the sensor can be converted into an optical signal through the optical receiving and transmitting assembly and can be transmitted to the peripheral assembly of the automobile through a main network, the gateway and the optical receiving and transmitting assembly; the peripheral assembly of the automobile comprises an engine ECU (Electronic Control Unit), a transmission system TCU (Transmission Control Unit), a brake system ABS (Anti-lock Brake System), a light control ECU, a door and window control ECU, a power distribution ECU, an antitheft ECU, an SRS (Supplementary Restraint System) ECU, a back-up ECU, an entertainment terminal and a navigation unit. According to the optical network-based automobile electric system disclosed by the invention, an optical control signal can be transmitted through the main optical fiber, not only can the problems of electric short circuit, electromagnetic disturbance and degraded and melt-down circuit be completely avoided by a control circuit, but also various communication protocols including CAN (Controller Area Network), LIN (Local Interconnect Network), FlexRay and MOST (Media Oriented System Transport) can be simultaneously compatible, a video signal can be quickly transmitted, and the requirements on high speed and sharing of information of the automobile can be met.

A method for controlling automatic turning-on of a steering lamp is executed by a steering lamp control unit integrated on a clock spring. After a vehicle is started, the steering lamp control unit sequentially executes following steps: step a, judging whether a steering angle of a steering wheel is larger than a preset angle or not; step b, judging whether speed of the steering angle of the steering wheel is larger than zero or not; step c, judging whether an accelerator is in the forward gear or not; step d, judging the speed of the vehicle is smaller than a preset speed or not; and step e, judging whether the acceleration of the vehicle is smaller than zero or not. If affirmative answers are obtained from the step a to the step e, the steering lamp control unit publishes a steering lamp control signal for automatically turning on the steering lamp to a CAN / LIN (controller area network / local interconnect network) bus, a combination switch of the vehicle automatically turns on the steering lamp after receiving the steering lamp control signal for automatically turning on the steering lamp from the CAN / LIN bus. The method has the advantage that when a driver forgets to turn on the steering lamp, the steering lamp can be automatically turned on to remind other vehicles to be attentive, thus driving safety performance is improved.

The invention relates to an automobile protocol conversion method added based on a simulation prelude. The method comprises a data transmitting process from a CAN (controller area network) bus to a LIN (local interconnect network) bus and a data transmitting process from a FlexRay bus to the CAN bus or the LIN bus, the simulation prelude is added in an application layer of an automobile adapter in a data process from the CAN bus or the LIN bus to the FlexRay bus, one to ten data frames of the CAN bus or the LIN bus is / are packed in the FlexRay bus for transmitting, the simulation prelude is analyzed in the application layer of the automobile adapter in the data process from the FlexRay bus to the CAN bus or the LIN bus, and the one to ten data frames of the CAN bus or the LIN bus, contained in the FlexRay bus, is / are extracted. The method can realize protocol conversion between the FlexRay bus and the CAN bus as well as the FlexRay bus and the LIN bus, so as to achieve transparent data transmitting, avoid an analyzing process of a gateway on all effective data, and reduce network time delay.

The invention relates to a driving information notification system which comprises a micro controller unit (MCU) processor, a device signal modulation module, a radio emission / reception device, an ACC (automatic amplitude control) power controller and a power stabilizer. The MCU processor is connected with at least one of an ECU (electronic control unit), a controller area network, a local interconnect network and a vehicle device electronic control signal source in a vehicle, so as to acquire and process driving information of the vehicle. The driving information is transmitted by the radio emission / reception device to a corresponding intelligent mobile phone, and the intelligent mobile phone notifies the outside in an image, text or voice manner.

The invention discloses a vehicular independent gateway which is characterized in that a main control module is respectively connected with a high-speed CAN (controller area network) bus module, a low-speed CAN bus module and an LIN (local interconnect network) bus module, and a power source module supplies power for the main control module. By adopting the circuit structure, the vehicular independent gateway has the advantages that 1, network bus cross-platform integration becomes simple, convenient and quick, influences on other subnets caused by subnet upgrading can be eliminated, and a network framework / platform can be maintained relatively stable and unchanged; 2, the vehicular independent gateway is low in production cost and suitable for popularization on more vehicular types; 3, the vehicular independent gateway is capable of flexibly handling emergencies during vehicular type network bus development and filtering and blocking outside diagnosis interferences, and safety of an electronic system of a whole vehicle is improved; and 4, program refreshing of an ECU (electronic control unit) of the whole vehicle can be realized through the independent gateway, and the independent gateway serves as a safety supervisor in a network bus.

A communication method is implemented in an on-board network between a master station (M) and a plurality of slave stations (S1, S2, S3, S4), of the type of those compatible with the standard Local Interconnect Network (LIN) protocol in which data frames are sent by the slave stations on a serial bus in response to the sending by the master station of identifiers representative of the required content of the frames. All or part of each of the specific data frames attached to the same predetermined identifier is formed sequentially by each of the slave stations. This enables an optimisation of the load on a LIN network, thus enabling use of this economical standard for all “passenger compartment functions”, and in particular for the management of AFS type advanced lighting systems.

A flexible scheduling method in local interconnection network (LIN) communication includes performing a broadcasting procedure using a predetermined LIN scheduling table when the LIN bus is activated, checking whether a slave node is connected to the LIN bus through the broadcasting procedure, re-configuring the LIN scheduling table using information about the slave node, connection of which is checked, and performing message scheduling using the re-configured LIN scheduling table. Thus, it is advantageous of enabling flexible scheduling in LIN communication.

The invention discloses a vehicle starting control system. The vehicle starting control system comprises a starting relay and a transmission chain state relay which are in series connection with a starter and further comprises a starting-and-stopping control unit used for controlling closing of the starting relay after a controller local area network (CAN) communication signal, a local interconnect network (LIN) communication signal, a starter control signal and a KL50 signal are received and a vehicle body controller used for controlling closing of the transmission chain state relay after the CAN communication signal is received, wherein when the starting relay and the transmission chain state relay are closed, the starter is started. The control system can improve the control precision degree, so that the advantage and safety of a starting-and-stopping system are better embodied, and the control system is simple in structure and easy to achieve. The invention further discloses a vehicle.