DE19700353A1 - Data processing system for monitoring vehicle operation - Google Patents

Abstract

The system is connected to the sensors monitoring the driving and ambient conditions of a vehicle. It undertakes the complex analysis to determine the optimum safe vehicle operation. Speed, distance from other vehicles, outside temperature, dampness, visibility, loading, vehicle characteristics and other parameters, are quickly identified and compared with ideal values. The system comprises a process (27) linked to RAM memory (28) for storing variable data such as weather conditions, and ROM (26) for unchanging data such as vehicle type, with a further memory (29) for safety values and control operation. The risks and the behaviour of the driver in these traffic conditions over a predetermined time can be evaluated and displayed. An operation centre (23) in bidirectional communication with the vehicle can impose safety controls.

Description

The invention relates to a device and a method for diagnosis, control, Transfer and storage of safety-relevant system state variables of a Motor vehicle.

Improving technical properties of motor vehicles to increase the Road safety and the use of sensors to determine vehicle and Environmental parameters have long been the focus of many developments in the Automotive industry. To control the operating and operating times of the vehicles or the driver has tachographs and voice recording systems available. The roads themselves are subject to constant attempts to adapt them to the requirements of the Adapt passenger and freight traffic.

Local positions of the vehicles can be via satellite navigation systems, such as Example in Japanese Patent Laid-Open No. 2 66 219/1990 (JP-A-H2 66 219) are disclosed, determined and displayed on electronic maps. Target selection and route recommendations are made possible via on-board computers.

Process for the automatic storage of data and for the transmission of data Position and other data in the event of an accident are part of the technical status, as in the laid-open patent application DE 42 20 963 A1.

The analysis of the condition of the vehicle, driver and environment, which essentially ver of the complex system, is still based almost exclusively on the purely subjective evaluation of safety - relevant disturbance or influencing variables by the Driver himself. The evaluation of the measured state parameters of the individual System elements and their logical link to a current image of the pre The situation found is the sole responsibility of the driver and is currently not technically supported. Inappropriate driving behavior and resulting accidents are common le the result of an unrealistic situation map combined with a lack of Experience in the detection, evaluation and handling of high-risk situations nen. A complex system for detection, quantification, control and over The monitoring of safety-relevant state variables was carried out for the on-board autonomous and land-based guidance of ships in the published patent application DE 44 23 233 A1 of fenbart.

The object of the invention is to increase road safety to care.

The task is solved by processing with conventional sensors measured or otherwise determined state parameters from the areas Vehicle, environment and driver using a data processing system that a com plexes situation-specific image created, a target-actual comparison and enables safety-related process control.

The result is both an assessment of limit violations of the individual para meter as well as determining a system health value that is an immediate complex diagnosis allowed. Type and priority of necessary tax operations for Stabilization of the system state are determined. All values can be with conventional methods recorded and transmitted to an operations center be, so that a current picture of the system status for the operational condition control results. Trends, special cases and Situations with increased risk potential as well as the generated tax operations can be used for the evaluation of high-risk phases and accidents. The Data storage system is provided with standardized interfaces and can, Including authorized access options by traffic control bodies be queried.

The object is achieved according to the features of claims 1 and 2. Further developments of the invention are the further claims and the description exercise, the drawings and exemplary embodiments.

The person skilled in the art can make modifications to the exemplary embodiments without here to leave through the scope of the invention.

Show it:

. Figure 1 shows the integration of the solution according to the invention in a sensor and data bus system of a motor vehicle;

Fig. 2, the data processing unit of the inventive solution;

FIG. 3 is a technical realization variant of the solution according to the invention;

Fig. 4 shows the overall configuration of the solution according to the invention.

Embodiments

In the previous technical systems, the measured individual driving tool-specific status parameters such as speed, revolutions, operation temperature, pressure and other environmental parameters such as permitted Ge speed, temperature, visibility, road conditions, traffic density, type of traffic, Vehicle distance and other, the human-specific parameters such as driving time, day time and others, the technical parameters such as braking system, braking distance, loading condition, type of loading and others by the driver in a continuous process can be combined into an overall picture of the current situation. From the comparison between this image and its target ideas about one of the given It derives control commands from the required safe process state.

The control process is through a very dynamic and random cha character characterized; Its security depends largely on the quality of the information recording and processing by the driver.

The lack of objectively necessary information about individual status parameters and / or subjective deficiencies in the use of existing information are the main cause traffic accidents.

An essential idea of the invention is all the safety-relevant parameters of the Driving process in its individual form to record them with regard to the over or Assessment of falling below limit values to assess their possible interactions take into account and use them to determine characteristic values for the assessment of the overall condition which are also subject to control commands arranged according to priorities, with which the driving process is transferred from an unstable to a stable state or can be kept in a stable state.

The driver-vehicle-environment system will be continuous and complex Condition diagnosis subjected and allows a much earlier and ahead looking hazard detection. Via the storage of safety-relevant status parameters and the complex process status evaluation can both current Data transmitted to an operations center as well as controllable operating status data are provided.

In Fig. 1, a motor vehicle sensor and data bus system is shown, in which the inventive solution has been integrated. The state and operating parameters measured by sensors and other data entered manually via an input unit 14 are fed via a data bus 1 to a data processing unit 17 . In the previously common solutions, individual status and operating parameters are shown on an instrument display unit 15 , where they are read by the driver and further processed. In the data processing unit 17 , all incoming data are now subjected to a security-relevant analysis, quantified and processed into a complex, process-appropriate image of the current situation. The result of the diagnostic process is shown on the display unit 16 alpha-numerically and graphically and provided with corresponding recommendations for control operations. Such control operations are primarily speed and / or brake orders to the technical systems of the motor vehicle; however, it can also be other process-typical operations to improve the security status. All data are stored in a data recorder 10 ; the speech is recorded in a voicere corder 11 . Both can perform a black box function. The data can be transmitted to an operations center 23 via a radio modem 22 . In addition to the safety-relevant data, all other operating data can also be recorded and processed in a database of the user 25 . A standardized interface 12 is available for control procedures, via which safety-relevant data can be obtained for evaluation via a database of the traffic control body 24 or for the operational control. The local operational control can take place via a mobile display unit 34 . The position sensor 2 detects the current geographic position of the motor vehicle and recognizes in an electronic map system the type of traffic route which it transmits to the data processing unit 17 via the data bus 1 . In the data processing unit 17 , the assignment of limited speeds as a function of the traffic route takes place, the vehicle specification being taken into account. The speed sensor 3 and distance sensors 4 also transmit their current measured values to the data processing unit 17 . Motion sensors 5 record the number of vehicles that pass, pass, or run along. Operating data sensors 6 transmit values such as revolutions, oil and air pressure, gear position, braking force, tire air pressure, mileage, operating temperature, fuel consumption, fuel level, type of lighting, warnings and other displays to the data bus 1 . An acceleration sensor 7 transmits its values to the data bus in extreme situations and triggers a command in the data processing unit 17 to transmit an external radio signal via a radio modem 22 to an operations and / or emergency center. The transmitted data contain standardized statements about vehicle number, time, location and type of load / number of people. The loading state is entered via a sensor 8 . A check-in / check-out unit 9 enables the authorized entry of the driver's name and its specific performance features. The entry starts or interrupts the time count for determining the driving time. The weather sensor 21 determines the degree of brightness of the surroundings, a temperature sensor 20 the current outside temperature, a moisture sensor 19 the nature of the road surface and a visibility sensor 18 the visibility in the direction of travel. The instrument and display unit 15 can be combined with the display unit 16 if it contains a graphic display, for example for the display of the electronic card. The input and control unit 14 represents the interface to the driver. It serves for the input of variable status values such as the number of passengers, quantity and classification of dangerous cargo, trailer operation, sensitivity of warnings and alarms, the input of vehicle-typical operating parameters and technical performance features and communication with the system functions. A unit for triggering control commands in limit situations 13 is used to automatically control technical elements such as brakes and fuel supply.

The inventive solution according to FIG. 2 processed in the unit 17 Datenverarbeitungsein all the sensor data and the manually via the input and control unit 14, a given process data. It uses a computer / processor (CPU) 27 , which processes the variable data stored in an intermediate memory (RAM) 28 and the largely unchangeable data stored in a read-only memory (ROM) 26 for a complex condition diagnosis 30 and the measurement and son Passes values of a comparator unit 31 , which compares the current state with a target state and derives safety parameters and control commands 13 from the differences to the technical systems 33 . Individual parameters, control commands and safety parameters are transferred to a black box 32 via a data storage unit 29 . The data are transmitted to an operations center 23 via a radio modem 22 . An interface 12 enables the user to access the data in the black box and other data stored in the data storage unit 29 . For traffic control 24 , only black box data can be accessed via this interface. The determined parameters are displayed on the display unit 16 and, if necessary, notices, warnings and alarms are generated.

Fig. 3 shows a technical implementation variant of the solution according to the invention, consisting of sensors ( 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 18 , 19 , 20 , 21 ) of a data processing unit ( 17 ), display and control units ( 9 , 14 , 16 ), optionally coupled to a control command unit 13 for technical systems 33 , data recording systems ( 11 , 12 , 17 , 32 ), devices for emergency reports ( 2 , 7 , 22 , 23 ) and a communication system including the connections to Database systems ( 12 , 22 , 23 , 24 , 25 , 34 ).

Fig. 4 shows the overall configuration of the solution according to the invention, consisting of a sensor system 35, a safety-specific diagnostic system 36, a display and control unit 37, possibly coupled to a control instruction unit 13 for technical systems 33, a data recording system 38 to control inter face 12 and mobile communication control unit 34 with connection to a database system 24 , an emergency reporting system 39 and a communication system 40 including the connections to a database system 25 .

Claims (6)

1. Device for diagnosis, control, transmission and storage of safety-relevant system state variables of a motor vehicle by a data processing unit which is able to measure the individual physical and meteorological values, as well as manually entered values of the state variables, measured by known sensors

• - speed,
• - distance to the preceding and the following object,
• - movement of objects passing or passing from the side,
• - type of traffic route,
• - outside temperature,
• - Humidity,
• - visibility,
• - weather / brightness,
• - technical operating data
• - time of day
• - driving time
• - type and quantity of load,
• - acceleration
• - vehicle type and characteristics

with regard to their specific peculiarities and deviations from corresponding standardized or normable comparative values typical of motor vehicles and traffic routes and their interactive safety-relevant effects in the driver-vehicle-environment system, to recognize and evaluate them, to quantify them as complex system state values and in the event of safety-critical deviations between target and Control operations are to be generated, the data processing unit containing at least:

• - at least one computer / processor ( 27 ) (CPU),
• - at least one memory ( 28 ) (RAM) for the temporary storage of variable data (such as speed, type of traffic route, geographical position, meteorological data),
• - at least one memory ( 26 ) (ROM) for the fixed value storage of unchangeable data (such as vehicle-specific operating data, limit values for individual parameters, system safety limit values),
• - at least one further data storage unit ( 29 ) for storing process status data, system security values and control operations,
• - at least one radio electronic data transmission means ( 22 ) for the transmission of the data from the vehicle to an operations center,
• - at least one interface to the data bus system ( 1 ) and one interface to the black box ( 32 ),
• - At least one interface to database systems of the user and the traffic control bodies.

2. Method for diagnosis, control, transmission and storage of safety-relevant system state variables of a motor vehicle by a data processing unit which is capable of measuring the individual physical and meteorological values as well as manually entered values of the state variables measured by known sensors

• - speed,
• - distance to the preceding and the following object,
• - movement of objects passing or passing from the side,
• - type of traffic route,
• - outside temperature, humidity,
• - visibility,
• - weather / brightness,
• - technical operating data
• - time of day
• - driving time
• - type and quantity of load,
• - acceleration
• - vehicle type and characteristics

with regard to their specific peculiarities and deviations from corresponding standardized or normable comparative values typical of motor vehicles and traffic routes and their interactive safety-relevant effects in the driver-vehicle - to recognize and evaluate the global system, to quantify it as a complex system state value and in the event of safety-critical deviations between target and Control operations are to be generated, the data processing unit containing at least:

• - at least one computer / processor ( 27 ) (CPU),
• - at least one memory ( 28 ) (RAM) for the temporary storage of variable data (such as speed, type of traffic route, geographical position, meteorological data),
• - at least one memory ( 26 ) (ROM) for the fixed value storage of unchangeable data (such as vehicle-specific operating data, limit values for individual parameters, system safety limit values),
• - at least one further data storage unit ( 29 ) for storing process status data, system security values and control operations,
• - at least one radio electronic data transmission means ( 22 ) for the transmission of the data from the vehicle to an operations center,
• - at least one interface to the data bus system ( 1 ) and one interface to the black box ( 32 ),
• - At least one interface to database systems of the user and the traffic control bodies.

3. The method according to preceding claim 2, characterized in that the Process data, safety parameters and control operations are recorded and the recorded values for an analysis of the course of risk situations and the Driver behavior over certain periods of time, in certain traffic situations and traffic areas are evaluated and a safety-relevant conclusion conclusions drawn for the design of the driver-vehicle-environment system can be. 4. The method according to any one of the preceding claims 2 and 3, characterized in that an operations center ( 23 ) via a radio electronic data transmission exercise a safety-relevant operational status control and can initiate control operations in bidirectional communication. 5. The method according to any one of the preceding claims 2 to 4, characterized in that traffic control bodies have access via a standardized interface in a black box have stored data and can feed it into a database system, the data obtained is made immediately visible with a mobile display unit can be.