DE102014224485A1 - Vehicle electrical system for a vehicle, corresponding vehicle and method for operating a vehicle electrical system - Google Patents

Abstract

An on-board network for a vehicle (1) comprises a current source (8) and at least one sampling control device (3) which is set up, state signals from at least one further control device (4) and / or at least one switching unit (5) with a predetermined cycle time to sample clocked. The electrical system (2) is set up such that it can be switched from a first operating state, the so-called normal operating state, in a second operating state, the so-called standby operating state, in which it consumes less energy than in the normal operating state. It is also set up to detect state signals with a shorter cycle time in the normal operating state than in the standby operating state. The scanning control device (3) is set up such that in the standby operating state by means of a predetermined change parameter, the cycle time is automatically changed from a first standby cycle time to a second standby cycle time.

Description

The invention relates to a vehicle electrical system for a vehicle, a vehicle equipped accordingly, in particular a motor vehicle, and a method for operating a vehicle electrical system.

Motor vehicles are equipped with a large number of electrical control devices, sensors and actuators with which respective functions for the operation of the motor vehicle are controlled, detected and / or executed. The respective electrical units form an on-board network, which includes, for example, also power supply components such as a generator or a battery, consumers, as well as components of a data bus system. Relevant known and widely used for motor vehicles, for example, the Ethernet, the Controller Area Network (CAN) bus system, the Local Interconnect (LIN) bus system or the Flex Ray bus system.

In order to reduce the power or energy consumption of on-board networks, various possibilities have already been developed to put the entire vehicle electrical system or individual electrical units connected to the vehicle electrical system into a so-called standby mode in which they do not have at least part of the functions can do more or execute, but in return consume less energy than in their so-called. Normal operating state in which they can perform these functions or run. In the DE 102 50 616 C1 and in the DE 10 2009 027 593 A1 For example, corresponding motor vehicle electrical systems are described. In this case, a parent, so-called master control unit of the electrical system via appropriate control signals him subordinate, so-called. Slave ECUs targeted between a standby mode (also called sleep mode or sleep mode) and the normal operating mode (also normal mode of operation switch over). During its standby operating mode, a control unit is in particular at least able to receive wake-up signals and then change to the normal operating state.

Particular demands on the operating state of a motor vehicle electrical system are situations in which the engine of the motor vehicle is turned off, for example, when the vehicle is parked. In such conditions, at least certain parts or functions of the electrical system must still be kept in operation in modern vehicles, for example, units that belong to the radio interface of the locking system, via a radio link to a remote control key for the vehicle, or for example, the units a remote Allow access to the vehicle. In this case, there is a requirement that as little current as possible is consumed by these units in order not to discharge the vehicle battery too quickly.

According to the DE 60 2004 012 966 T2 During a standby operating mode, signals are sent via a data bus at regular clock intervals, with which units of the vehicle electrical system are woken up cyclically.

The contents of the above publications are hereby incorporated by reference into the present specification.

It is an object of the invention to provide a vehicle electrical system for a vehicle, in which on the one hand by means of a standby operating state low energy consumption can be achieved when the vehicle is not in use and on the other hand can be achieved that at least parts of the electrical system within a short time Change time from standby mode to normal mode when the vehicle is to be put into service.

This object is achieved by the respective invention specified in the independent claims. Advantageous embodiments of the invention are indicated in the dependent claims.

An inventive vehicle electrical system for a vehicle comprises a current source and at least one scanning control device which is set up to scan state signals of at least one further control device and / or at least one switching unit in clocked fashion with a predetermined cycle time. The electrical system is set up such that it can be switched from a first operating state, the so-called normal operating state to a second operating state, the so-called standby operating state, in which it consumes less energy than in the normal operating state. The on-board network, in particular the scanning control device, is furthermore set up to record less status signals in the standby operating state than in the normal operating state. The sampling control device is set up such that in the standby operating state by means of a predetermined change parameter, the cycle time is automatically changed from a first standby cycle time to a second standby cycle time.

In a method according to the invention, status signals of at least one control device and / or at least one switching unit in a vehicle electrical system comprising a current source for a vehicle are sampled by means of at least one sampling control device. The sampling is clocked with a predetermined cycle time, the cycle time in a first operating state, the so mentioned normal operating state, is smaller than in a second operating state, the so-called standby mode in which it consumes less energy than in the normal operating state. In the standby mode, the cycle time is automatically changed from a first standby cycle time to a second standby cycle time by means of a predetermined change parameter. The change can be controlled in particular with the scanning control device. The second standby cycle time may in particular be greater than the first standby cycle time. The second standby cycle time can also be smaller than the first standby cycle time.

According to an advantageous embodiment of the method according to the invention, data provided outside the vehicle are used to change the cycle time. Such data may be transmitted, in particular, by means of an off-board computer system, such as e.g. a backend server. In particular, they can be transmitted at least partially wirelessly into the vehicle by means of a radio interface. Such data may also be transmitted by means of a mobile device, e.g. Mobile device or smartphone, which is carried by the respective driver or intended vehicle user, generated and / or provided. The data may in particular include position data on the current location of the driver, which are generated by means of a location system. Advantageously, adjustments to the vehicle can be made on the basis of a calculated and / or determined arrival time and / or an expected arrival time period of a driver on the vehicle. The calculation or determination of the arrival time or the estimated arrival time period can be done, for example, using the position data of the driver.

The invention is based on the recognition that the on-board network or the sampling control device for clocked sampling of the status signals of the further control device or the switching unit consumes equally more devices or consumers, the more current or energy the shorter the Cycle time is.

Furthermore, the invention is based on the recognition that in certain phases of a standby mode of operation, for example when a motor vehicle is parked for a long time and / or the motor is switched off for a longer period of time, the cycle time for the clocked scanning also increases within the standby mode of operation can be, so that even more energy can be saved in the operation of the vehicle electrical system. For the standby mode of operation, several subordinate standby modes can be provided, the cycle times of which differ.

In the context of the invention, it was further recognized that the energy consumption of a vehicle can advantageously be further reduced by changing the cycle time within the standby operating mode by changing the respective cycle time in a controlled manner by means of at least one changeover rule. The change rule can comprise several, in particular adjustable, change parameters. Advantageously, various alternating rules can be kept and used, which are each assigned to a predetermined status of the vehicle use.

A first change parameter may, for example, be the time, and a corresponding first change rule may, for example, correspond to a standby mode in which the vehicle is parked. If the parking duration is below a predetermined threshold, for example for less than 24 hours, then the standby cycle time in standby mode could be a first time value. If the parking duration exceeds the predetermined threshold of e.g. Exceeds 24 hours, then the cycle time in the standby mode could be increased to a second standby cycle time that is greater than the second time value. The switching of the time value takes place by means of the threshold value and a one-hour time measuring device (timer), which detects the time since the vehicle has been turned off, and the correspondingly regulated and event-controlled.

Another change parameter may be the location of a vehicle-independent unit, in particular of the vehicle driver, which is determined for example via a mobile phone or smartphone and / or a location system. The location system may, for example, determine the location using Global Positioning System (GPS), Wireless Area Local Area Network (WLAN), Internet or a mobile standard such as Global System for Mobile Communications (GSM), GSM3, GSM4, GSM5. The respective location data, in particular corresponding coordinates, can for example be transmitted to a central computer system which is independent of the vehicle and which can exchange data with the vehicle by means of a radio interface such as a mobile radio network, a WLAN or other network standard and / or via the Internet for example with a backend server. The location data can then be transferred from the back-end server into the vehicle and used there as a change parameter or used to control a change of the operating state. It is also possible to include calendar data of a particular vehicle user. The calendar data can also be sent via a backend server or directly For example, via a Bluetooth interface from a device, esp. Mobile device of the vehicle user such as a smartphone, a laptop or a tablet PC are loaded into the vehicle. Such data can be inferred in particular to the next time of use of the vehicle. In such a backend-based embodiment of the invention, unnecessary power consumption can advantageously be avoided in the vehicle in order to regularly poll the current position of the vehicle user.

An algorithm for processing, application and / or evaluation of the data, change parameters and change rules can be executed wholly or partly in a computing unit, in particular in a computer or a state machine, which is provided in the vehicle. It can also be executed completely or partially in a vehicle-independent computing unit, in particular in a back-end server.

In such a backend-based embodiment of the invention, even more complex algorithms can advantageously be implemented without having to provide or claim greater resources of the vehicle. The backend server can easily provide such resources or a correspondingly high-performance arithmetic unit. Functions of a backend server can optionally be provided and executed if a vehicle has a corresponding data connection. If the vehicle has no corresponding data connection components or a data connection to the back-end server for other reasons, e.g. is temporarily not possible, all or part of the respective functions or algorithms can be provided and executed in the vehicle.

The invention further recognized that if predetermined parameters of a use status of the vehicle are completely or partially automatically detected and on this basis the corresponding change rule is used to control the change of the cycle time, not only energy can be saved, but also the availability of the electrical system can be optimized according to the respective vehicle use. For example, in a vehicle that is parked for a short time (e.g., less than 24 hours), it may be achieved by signals from the controller receiving radio key signals having a first cycle time of e.g. 20 ms are scanned. In contrast, if the vehicle is parked for a long time then a longer cycle time can be set to interrogate the signals of that controller, e.g. 100 ms. A vehicle user who has parked the vehicle only briefly, can thereby open the vehicle advantageously within a short time, because the control unit is queried in relatively short time intervals. This situation is commonplace. In contrast, if the vehicle user has parked the vehicle for a long time, for example, at the airport during a flight, then saved by the longer cycle time in the vehicle energy and thereby maintain the battery or the operational readiness of the vehicle longer. After the return of the driver from the flight, the opening of the vehicle will take longer because of the longer cycle time than in everyday use, in advantageous embodiments of the invention, however, the respective cycle times, change parameters and / or change rules can be set individually and possibly to individual wishes be adapted by vehicle users. The cycle time will be increased or decreased, in particular situationally based on the rule.

According to an advantageous embodiment of the invention, at least one change parameter of the change control is adjustable to change the cycle time during the standby mode. As a change parameter, for example, a time parameter and / or a geographical parameter can be provided. For example, the time period can be recorded and used in the course of the application of the change rule, which is the electrical system in the normal operating state and / or in standby mode. Calendar data, e.g. Dates of the customer, date, day of the week, calendar week, school holidays periods, recorded, provided and / or used to apply the change rule and possibly compared with corresponding predetermined data. On the basis of the respective comparison result, a change rule and / or a change parameter of a change rule can be advantageously selected and applied.

In a further advantageous embodiment of the invention, a self-learning system is provided, by means of which a change parameter and / or a change rule is set and / or selected. In particular, the self-learning system can be set up in such a way that it detects and stores at least one change parameter for respective changes in the operating state and examines the respectively detected and stored parameters according to recurring patterns. It may also be advantageous to have these examinations or related calculations carried out in a back-end server, as this vehicle data can be transmitted from the vehicle and it can also be networked with the calendar of the vehicle user and / or with its current position , where appropriate data is available for the backend server.

The self-learning system may include a data memory, a data processor, in particular a microprocessor, a programmable logic device such as a field programmable gate array (FPGA) and / or a computer program for data processing. It may, for example, record data on the vehicle usage status over a predetermined, in particular longer period of, for example, several weeks or months and compare recorded data and evaluate such that recurring patterns are recognized. For example, temporal and geographical data could be recorded and evaluated so that it is recognized that the vehicle using a particular remote key on weekdays only in a period between 7 o'clock and 8 o'clock from a certain first place, eg the residence of the vehicle owner, to a certain second place, for example, the place of work of the vehicle owner, is driven and driven at appropriate times, for example in the evening between 17 and 18 clock back, but otherwise is not used. In such a scenario, a change parameter could include this location and time data and be used, for example, to select a change rule associated with the usage status "work path". According to this rule, a shorter cycle time could be set on working days between 6 o'clock and 9 o'clock and 16 o'clock to 19 o'clock and a longer cycle time on the other times on weekdays. The somewhat extended periods in the example mentioned with respect to the recorded times with the shorter cycle times can contribute to the fact that the vehicle user can use the usual short reaction times of the vehicle electrical system even with a somewhat different use of the vehicle.

The change rule and / or change parameters can be completely and partially automatically generated and / or determined on the basis of the acquired and / or stored data, in particular also using statistical methods. This can be done in particular by means of the self-learning system.

For examining recurrent patterns, pattern parameters may be provided in the self-learning system. The pattern parameters may include, for example, time-related parameters, location-related parameters and / or threshold values. In this case, vehicle parameters such as the operation of the drive motor or a heater, in particular under detection of their operating times, can be provided. Exception rules, for example according to a holiday period entered in the driver's calendar, can again be provided for predetermined standard change rules, such as the rule for driving to work described above, and can be automatically and / or completely or partially automatically recorded and / or selected ,

According to an advantageous exemplary embodiment, the scanning control device is set up such that detected vehicle data and / or vehicle-external data are used to change the change parameter. Vehicle-external data may in particular be transmitted via a radio interface, for example via a mobile radio interface or a wireless local area network (WLAN) interface and / or using Internet connections between the vehicle and a vehicle-independent, central computer system (so-called backend), a mobile device such as a mobile telephone. a smartphone and / or other device, esp. Public infrastructure facilities, are transmitted.

It is also possible to acquire, provide and / or use geographical data and possibly to compare them with predefined data, for example the coordinates of the current vehicle location with a Global Positioning System (GPS) and with stored coordinates to the place of residence of the vehicle owner or to another, regularly approached place such as compared to an airport or train station. Also on the basis of such a respective comparison result can advantageously be selected and applied a change rule and / or a change parameter of a change rule.

In an advantageous exemplary embodiment of the invention, settings, in particular default settings, can be made on the vehicle on the basis of a calculated and / or determined arrival time of a driver on the vehicle. In this case, on the basis of information as to when the vehicle is likely to be used next time, a preparation of the vehicle take place. In the setting, in particular predetermined electrical and / or mechanical systems of the vehicle can be switched on and / or operating parameters can be set to predetermined values. In this case, a determination can also be made as to whether the vehicle driver is approaching the vehicle, for example by detecting by radio transmission, that a radio remote control key of the vehicle is located in the vicinity of the vehicle or in the range of the corresponding vehicle radio system. Corresponding information about an anticipated time of use can be derived, in particular, from registered and / or learned patterns as they are specified in the context of the present description.

For example, the vehicle could approach the driver already the driver's seat in a predetermined, in particular the corresponding remote control key assigned position, turn on a climate system of the vehicle and / or set to predetermined values, activate a seat heater and / or start a greeting scenario such as turning on predetermined vehicle lights. This can be done, for example, by switching on the driving light and / or in the form of a single or multiple adjustment of a headlight range adjustment, whereby an effect in the manner of a wink can occur, or by similar measures. With the invention, such comfort systems can be adjusted even better and, in particular, specify a self-learning system with which both an energy saving is possible and a vehicle preparation when approaching the driver.

The invention can be used particularly advantageously in particular for purely electrically operated vehicles, in which, for example, data can be exchanged with an electrical charging station and for which a saving of electrical energy is associated with an increased range.

In a further advantageous exemplary embodiment of the invention, the scanning control device has an electronic data memory in which various profiles or data associated with the profiles are stored. In this case, the scanning control device is set up such that a profile assigned to the respective input signal is selected on the basis of input signals. The input signals can be generated for example by means of a unique identifiable vehicle radio key or by means of an access detection, a correspondingly coupled telephone or a room camera and / or assigned to a person.

In particular, the scanning control device can be a master control device of a bus system, which is in particular comprised by the on-board network. The scan controller may have one or more additional functions in addition to the scan function. The further control device may in particular be a slave control device of the bus system, which is subordinate control technology to the master control device or the master control device. The bus system may be wholly or partially of the type of one of the aforementioned bus systems, for example a CAN bus system or a LIN bus system. The bus system can be designed in particular as a combination of different types of bus system. There may also be additional sub-masters, which in turn control slaves.

In the following, further embodiments of the invention will be explained in more detail with reference to a figure.

The figure shows a motor vehicle.

In the vehicle only schematically shown in the figure 1 is an electrical system 2 provided that a bus system 9 includes. The bus system 9 may include components configured according to one or more bus system types. It may, for example, comprise CAN bus system components with which control devices 3 . 4 or sensors are coupled and / or LIN bus system components via which, for example, electromechanical switches, contacts or buttons are coupled. In the figure, for example, a corresponding button 5 shown. By means of the control devices, sensors, contacts and / or buttons, for example, actuators such as electric motors for doors or flaps of the motor vehicle 1 be controlled, in particular to control access to the vehicle, ie, for example, doors or a tailgate to open, close, lock and / or unlock. It can also be provided components that allow wireless data transmission, such as wireless components for receiving data of a radio remote control key, a remote-controlled auxiliary heater or other parking functions of the motor vehicle 1 , Sensors may also be provided which wirelessly scan the vehicle surroundings, such as on the door handle or in the area of the vehicle rear, for example an infrared or ultrasound sensor, by means of which a person is detectable and in cooperation with an identification unit such as a radio key or a smartphone. has the corresponding identification features that allow unlocking and / or opening one or more doors, in particular the tailgate as a so-called comfort opening function. These are the sensors, control units and / or buttons 4 . 5 regularly in time intervals or cycle times with regard to status signals issued by you via the bus system 9 from a control device designed as a scanning device 3 sampled. For example, from the button 5 two state signals in the form of signal levels HIGH and LOW are output, wherein the signal level HIGH means that the central locking of the motor vehicle 1 should be opened.

The power supply for the electrical system 2 is powered by a vehicle battery 8th provided here, only here for the sake of simplicity, only one supply line 10 to the scan controller 3 is shown. In fact, it can be provided that other control devices, sensors, etc. of the motor vehicle 1 directly or indirectly with the vehicle battery 8th are connected to their power supply. In the motor vehicle 1 It is also possible to provide a plurality of scanning control devices.

In the scan control unit 3 various control components are provided with which the regular sampling of state signals of the respective control devices, switches and / or buttons, the so-called polling process, is controlled.

For example, in the normal operating state of the motor vehicle 1 in which the vehicle is in operation or the ignition is turned on, relatively short sampling times or cycle times for electrical units such as control units, sensors, switches and / or buttons are provided. When the vehicle is then switched off or put into standby mode, a large number of consumers are switched off, eg engine control units, multimedia devices, lighting devices, etc., so that the energy consumption in standby mode is much lower than in normal operating mode. Furthermore, certain scanning operations, eg of drive-related components are completely switched off. Other scans, such as those for lock actuator component states, are maintained at transition from the normal mode to the standby mode, but the cycle time is increased from that of the normal mode of operation, resulting in fewer scans per unit time.

In the respective polling process it can be provided that the sampled units are scanned individually with an individual sampling time or in groups or collectively with the same cycle time. For sampling radio-controlled components of the central locking system, e.g. a scan time of 20 ms may be provided, while for sensing components detecting motion on the vehicle, e.g. a vehicle-side door handle sensor is provided a cycle time of 50 ms. The shorter compared to the cycle time for the door handle sensor cycle time at the radio-controlled components that unlocks even with only a short press a remote control, the motor vehicle. Due to the higher cycle time on the door handle sensor, energy can be saved for the involved components of the door handle scanning without the user feeling any appreciable impairment because he typically holds the door handle longer in his hand anyway. In addition, when it is directly on the vehicle, it normally perceives the typical unlocking sound of the mechanical door locks when it is locked, usually leaving the hand on the door handle until it locks. For a door handle sensor, the cycle time can be further increased according to need, in order to save more energy.

To control the polling process, the sampling controller 3 including a data processor 6 and a data store 7 in which control parameters are stored as a change parameter, as well as a clock timer 11 , The clock clock 11 emits high-frequency clocks, for example, at 400 MHz, by means of which the data processor 6 from the data store 7 The control parameter read sets the cycle time for the polling process. The change or control parameters form a corresponding set of rules, with a basic rule being that in the motor vehicle 1 a normal operating state and a standby operating state are distinguished. In the normal operating state are in the electrical system 2 significantly more states detected. For a specific polling process, the cycle time may be smaller than in standby mode.

However, the cycle time in the standby mode is not always the same, but the set of rules distinguishes certain other situations here. For example, the scan controller will 3 Also recorded how much time has passed since the motor vehicle was last operated in normal operating condition. In this case, provision may be made in particular for the cycle time to be increased as a function of the duration of the sleep operating mode of the motor vehicle, which corresponds, in particular, to the shutdown time. In this case, several increases can be provided stepwise, for example for a shutdown time of more than 24 hours an increase to a second standby cycle time, which is higher than a first standby cycle time and for a shutdown time of more than 1 Week is an increase to a third cycle time, which in turn is greater than the second standby cycle time. Accordingly, if a certain threshold has been exceeded for the time since the last normal operating state, for example 1 Week, then the standby cycle time is increased from the usual standby cycle time for the continued standby operating state to a higher standby cycle time, for example for the radio remote control function described above from 20 ms to 100 ms. When a driver drives the vehicle 1 then open with a wireless remote control key, it may take a little longer than in the usual standby mode of operation of the quasi-first stage. In the set of rules, a change in the cycle time can thus be provided, in particular in stages, depending on the presence or change of certain boundary conditions. By a corresponding increase in the cycle time can advantageously energy consumption, battery discharge and fuel consumption for the motor vehicle 1 be saved. Based on the rules, the cycle time can be customized or changed depending on the user and / or condition.

The data store 7 deposited rules contain a number of parameters in the data processor 6 on the basis of other parameters such as the operating status of other consumers of the Motor vehicle, metrologically detected variables on the motor vehicle and / or condition signals of control devices and / or switches, buttons, etc. are processed. For example, it may be provided that as soon as on the motor vehicle 1 a heater is put into operation, the cycle time is possibly reduced from the increased value to the normal value of the standby state.

The car 1 is via one on the bus system 9 connected mobile communication unit 12 with a stationary mobile network 14 connected, for example, according to one or more GSM standards (GSM, GSM3, GSM4 or LTE, GSM5) is designed for data transfer. About the mobile network 14 and one or more other networks, such as a connection to the Internet 15 may have data between the motor vehicle 1 and a stationary and / or off-board backend server 13 be transmitted. The backend server 13 contains common components of a computer including a data or microprocessor 16 and a non-volatile data store 17 , in which also data for a set of rules and / or to change parameters can be stored. The rules can be identical to a set of rules whose data in the vehicle 1 are stored. The data of a rule can also be partially in the motor vehicle 1 and partly in the backend server 13 be saved. The respective data, rules and / or change parameters can be found in the backend computer 13 provided data or microprocessor 16 be processed and / or in the motor vehicle 1 provided data or microprocessor 6 ,

The rules can be found in the motor vehicle 1 and / or the backend server 13 also be changed and / or certain rules are selected in whole or in part manually or manually. The policy can be adjusted based on historical usage data. This can be done in particular by means of a self-learning system. The self-learning system can itself be part of the set of rules or completely or partially in the sampling control unit 3 or in the backend server 13 be integrated. For example, if a new vehicle user is detected, eg via a radio remote control key or other type of person recognition such as camera and face recognition, then the standby cycle time is set to a default value (default). The self-learning system then records the usage habits of the respective vehicle user over a longer period of, for example, 2 weeks. In this case, for example, operating times, travel routes, driving region, etc. can be recorded, stored and evaluated and from this a corresponding vehicle user profile can be created. During this learning phase, the cycle time in standby mode is set to the default value or the first standby cycle time, respectively. If the motor vehicle is now used significantly differently than deposited in the profile, for example, turned off much longer than is indicated by the vehicle user profile, then the cycle time in standby mode can be adjusted from the default value, namely to a higher value (second Standby cycle time, third standby cycle time, etc.). The cycle time may be increased from the standard value, for example, in a period between 18 o'clock in the evening and 6 o'clock in the morning when the vehicle is regularly parked according to the user profile at these times of day and is currently in standby operating mode. Conversely, at times when the vehicle user profile indicates that the motor vehicle has been regularly awakened, ie, switched from the standby mode to the normal mode, it may be provided in the policy that the cycle time is in standby mode with a predetermined lead time is again shortened, in the above example, for example, from 05:30 in the morning in each case to the default value is reset. Corresponding data can also be obtained from other data sources, in particular from or via the backend server 13 used and / or in the motor vehicle 1 getting charged.

Time data and / or location data and in particular data of a navigation system of the motor vehicle can be evaluated for the application of the rules. If, for example, the motor vehicle is parked at an airport for more than two hours, it may be provided to increase the cycle time after this time has expired. If suitable further data can be retrieved via a communication system of the vehicle with which the probable service life or the expected time of the standby operating mode can be determined, these can also be used for the control of the cycle times. Such data may be retrievable, for example, from an off-board data processing system (eg, a so-called backend computer and / or the Internet) that is connected to the vehicle communication system via a cellular connection. For example, flight data of the vehicle user could be retrievable, it being possible to deduce from the return flight data when the vehicle parked at the airport will be put back into service by the vehicle user. In addition, calendar entries of the respective vehicle driver or user (eg vacation, business trip, etc.) as well as data about the current time and / or position and / or the return time or an expected return period of the user at the respective departure point can be used. This can be beneficial calendar entries of the user eg in the backend computer 13 be available. This can for example, also be made possible via a connection to a network-based calendar.

For the creation and / or application of the set of rules also other influencing variables, state data and / or measurement data can be provided, for example from parking functions of the vehicle such as auxiliary heating and / or parking ventilation or from remote functions such as the coupling of a mobile radio connection, a mobile telephone, smartphones or tablets. PCs, a vehicle-specific software application (app) installed there and / or the connection of an electric vehicle to an electric charging station.

With the self-learning system, the rules can be adapted dynamically. This can be done on the basis of slight changes in a learned behavior or vehicle user profile, for example, if a usual departure time changes regularly on a regular basis. The adaptation can also be based on gross changes, for example, if a vehicle is no longer awakened weekdays, because the vehicle user is on vacation.

The described devices and system components are in particular controlled by computer programs and can have further, known per se elements of computers and digital control devices such as a microprocessor, volatile and non-volatile memory, interfaces, etc. Therefore, the invention can also be implemented in whole or in part in the form of a computer program product which, when loaded and executed on a computer, completely or partially effects a sequence according to the invention. It can be provided, for example, in the form of a data carrier such as a CD / DVD, or else in the form of one or more files on a server from which the computer program can be downloaded.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 10250616 C1 [0003]
• DE 102009027593 A1 [0003]
• DE 602004012966 T2 [0005]

Claims (11)

On-board network for a vehicle ( 1 ) comprising a power source ( 8th ) and at least one scanning control device ( 3 ), which is set up, status signals from at least one further control device ( 4 ) and / or at least one switching unit ( 5 ) timed with a predetermined cycle time, the on-board network ( 2 ) is set up such that it can be switched from a first operating state, the so-called normal operating state, in a second operating state, the so-called standby operating state, in which it consumes less energy than in the normal operating state and is further configured Normal operating state to detect state signals with a shorter cycle time than in the standby mode, wherein the sampling control device ( 3 ) is set up such that in the standby operating state by means of a predetermined change parameter, the cycle time is automatically changed from a first standby cycle time to a second standby cycle time.  Vehicle electrical system according to claim 1, wherein for changing the cycle time during the standby mode, a change rule is provided, in which the change parameter is adjustable.  Vehicle electrical system according to claim 2, comprising a self-learning system, by means of which the at least one change parameter of the at least one change rule is set.  The vehicle electrical system according to claim 3, wherein the self-learning system is set up in such a way that it detects and stores at least one change parameter for respective changes of the operating state and examines the respective detected and stored change parameter according to recurring patterns.  The vehicle electrical system according to claim 4, wherein the self-learning system is set up such that pattern parameters are provided for the purpose of examination for recurring patterns. Vehicle electrical system according to one of the preceding claims, wherein the scanning control device ( 3 ) is set up such that detected vehicle data and / or vehicle-external data are used to change the change parameter. Vehicle electrical system according to one of the preceding claims, wherein the scanning control device ( 3 ) a data memory ( 7 ), in which different profiles are stored with data for at least one change rule, and wherein the scan control device ( 3 ) is set up such that a profile assigned to the respective input signal is selected on the basis of input signals.  Vehicle, in particular a motor vehicle, comprising a vehicle electrical system according to one of Claims 1 to 7. Method for sampling state signals of at least one control device ( 4 ) and / or at least one switching unit ( 4 ) in one a power source ( 8th ) comprehensive on-board network ( 2 ) for a vehicle ( 1 ) by means of at least one scanning control device ( 3 ), wherein the sampling takes place clocked with a cycle time, wherein the cycle time in a first operating state, the so-called normal operating state, smaller than in a second operating state, the so-called standby mode in which it consumes less energy than in normal Operating state and wherein in the standby mode by means of a predetermined change parameter automatically the cycle time is changed from a first standby cycle time to a second standby cycle time.  The method of claim 9, wherein data used to modify the cycle time outside the vehicle used. Method according to claim 9 or 10, wherein on the basis of a calculated and / or determined arrival time and / or an expected arrival time period of a driver on the vehicle ( 1 ) Settings on the vehicle ( 1 ) be performed.

Images