摘要:
The invention relates to a microprocessor system (60) for controlling and/or regulating at least partly security-critical processes, which system comprises two central processing units (1, 2) integrated into a chip housing, a first and a second bus system, at least one complete memory (7) on the first bus system, and check data in one or more check data memories, said data being related to data of the memory in the first bus system. The check data memory is smaller than the complete memory. The bus systems comprise comparative and/or driver components which facilitate data exchange and/or comparison of data between the two bus systems. The one or more check data memories are arranged on the first bus system. On the second bus system, neither a check data memory nor a memory safeguarding data of the memory on the first bus is used. The invention also relates to the use of the inventive microprocessor system in automotive control devices.
摘要:
The invention relates to an active magnetic sensor, in particular for detecting the rotational behaviour of a wheel. Said sensor comprises a magnetoelectric transducer (2), which is electrically connected to a modulator (5), a current-source sub-assembly (4), which controls the signal current produced at the sensor output (k3, k4) and is characterised by an undervoltage monitoring circuit (10), connected to the sensor output (k3, k4). Said circuit monitors the electric signal at the sensor output (k3, k4) for the undercutting of a first predetermined threshold current (VU) and based on the result of said monitoring, controls the signal current produced at the sensor output (k3, k4), by influencing the current-source sub-assembly (4).
摘要:
Die Erfindung betrifft ein mehrkerniges redundantes Kontrollrechnersystem (5), bei dem mit mindestens zwei Kontrollrechner (1, 2), welche neben jeweils einem Rechnerkern mit teil- oder vollredundanten Peripherieelementen und teil- oder vollredundanten Speicherelementen ausgestattet sind, auf einem gemeinsamen Chipträger (28) oder einem gemeinsamen Chip (7, 27) integriert sind, wobei die mindestens zwei Kontrollrechner (1, 2) mit mindestens einer gemeinsamen ersten Arbitrationseinheit (9), welche die Kontrollrechner (1, 2) auf eine Fehlfunktion hin überwacht, verbunden sind. Weiterhin betrifft die Erfindung einen Rechnerverbund (11) aus mindestens zwei miteinander direkt oder indirekt kommunizierenden Rechnerblöcken (32, 32 ), wobei mindestens ein Rechnerblock (32, 32 ) zwei Kontrollrechner (1, 2) beinhaltet, welche neben jeweils einem Rechnerkern mit teil- oder vollredundanten Peripherieelementen und teil- oder vollredundanten Speicherelementen ausgestattet sind, auf einem gemeinsamen Chipträger (28) oder einem gemeinsamen Chip (7, 27) integriert sind. Des weiteren betrifft die Erfindung die Verwendung des Rechnerverbunds (11) in einem Fahrzeugkontrollrechner.
摘要:
Beschrieben ist ein Rechnersystem (50) umfassend mindestens eine Zentralrecheneinheit (1), mindestens einen mit der Zentralrecheneinheit und Speicherelementen (4,20,60,70) verbundenen Datenbus (30), wobei die Speicherelemente mindestens einen Programmspeicher (15,20) und einen oder mehrere Prüfdatenspeicher (16,60,70) umfassen und wobei der Prüfdatenspeicher ein Teil (16,60) des Programmspeichers (4,20) und/oder ein Teil (70) eines separat angeordneten Speicherelements ist, und bei dem mindestens eine Prüfdatenerzeugungseinrichtung (3,6,8, 90,100) zur Auswertung und/oder Speicherung von am Datenbus anliegenden Daten (80) und/oder zur Erzeugung von Prüfdaten (130,140,160) vorgesehen ist.Die Erfindung betrifft auch ein Verfahren zur Erkennung von Fehlern während Speicherzugriffen auf einen Programmspeicher (4,20), bei dem zusätzlich spaltenweise Prüfdaten abgelegt werden, welche unter Verwendung der abzusichernden Daten erzeugt wurden, und bei dem eine Fehlererkennungseinrichtung (3,6,8,90,100) selbstständig auf den Datenbus (30) und/oder den Adreßbus (21) zugreift und/oder die Fehlererkennungseinrichtung den durch eine Zentralrecheneinheit (1) veranlaßten Busverkehr verfolgt und dabei Daten sammelt.
摘要:
The invention relates to a computer system (50) comprising at least one central processing unit (1) and at least one data bus (30) that is connected to the central processing unit and memory elements (4,20,60,70), which comprise at least one programme memory (15, 20) and one or more test data memories (16, 60, 70). The test data memory constitutes part (16, 60) of the programme memory (4, 20) and/or part (70) of a separately located memory element. At least one test data generation device (3, 6, 8, 90, 100) is provided for evaluating and/or saving data (80) that is present in the data bus and/or for generating test data (130, 140, 160). The invention also relates to a method for identifying errors when the programme memory (4, 20) is being accessed. According to said method, test data, which has been generated using the data to be saved, is additionally stored in columns and an error identification device (3, 6, 8, 90, 100) independently accesses the data bus (30) and/or the address bus (21), and/or the error identification device tracks the bus traffic initiated by the central processing unit (1) and collects data.
摘要:
In order to transmit data supplied by a rotational speed sensor in the form of an alternating signal (ES) along with additional data (ZD) via a signal line (3), a sequence of electrical pulses (P) of a given duration is derived from the alternating signal. The intervals or interpulse periods of said sequence contain information on rotational speed. Additional data (ZD) is transmitted in the interpulse periods, wherein transmission of additional data (ZD; Bto to Bt7) is synchronized by the individual rotating signal sensor pulses (P). Preferably, the method is employed for active sensors (1), whereby the sensor pulses (P) and the additional data (ZD) are transmitted in the form of electric signals (Bto to Bt7). During standstill, when no sensor pulses (P) occur, transmission of additional data is triggered by auxiliary synchronization pulses (Sy2).
摘要:
An arrangement for the detection of the rotational behaviour of a rotating body or encoder (3) comprising a sensor module (1) with a sensor element (2; 2.1-2.4) with a controlled electric power source(4) which delivers a load-independent current which represents the rotational behaviour; a modulator (5) which, dependent upon signals from the sensor element (2; 2.1-2.4) and signals delivered by an external signal source via an additional connection (K5), controls the power source (4), and an evaluation circuit (9). The sensor module (1) is magnetically coupled with the encoder (3). The output signal of the sensor module (1) is a signal representing the rotational behaviour with a superimposed status and/or additional signal.
摘要:
In order to monitor a data processing circuit containing two (or more) microprocessors (MP1, MP2) on a shared chip and interconnected by data lines (1), said microprocessors generate data in common which form a data word sequence and are transmitted to a monitoring circuit (4) at predetermined times. The monitoring circuit (4) is on a separate chip (IC2). The data words of the data word sequence are monitored by the monitoring circuit according to the content and time of occurrence of the individual data words. It is an advantage to compose the individual data words of partwords generated by different algorithms.
摘要:
In order to monitor the correct functioning of a microprocessor, microcontroller or other program-controlled circuit (1 - 5; 15), data processing results (W1) with data (W2) produced in a monitoring circuit (7 - 14; 17 - 30) independently of the monitored circuit and of the program flow are checked at preset intervals for deviations. If deviations indicative of a fault are found, a cut-out signal (Aus) is generated. To that end, data words or a data word sequence (W1) are produced during the program flow of the monitored circuit (1 - 5; 15) and forwarded to the monitoring circuit (7 - 14; 17 - 30) at predetermined times (T1). The monitoring circuit is used to monitor the content of the data words (W1) and the appearance at the predetermined times (T1) of the data words (W2).
摘要:
A circuit arrangement is proposed for monitoring a control circuit which has a drive transistor (T1) with an inductive load (L) and a second transistor (T2) in a circuit arm parallel to the inductive load (L). The proposed circuit arrangement is provided with an additional external current-measuring device (T3, RM, 3): a switching element parallel to the drive transistor (T1) is provided, in particular a transistor (T3) and an ohmic measuring resistor (RM). At a test instant (ttest), the current (iL) flowing through the inductive load (L) is diverted to the measuring device and induces a voltage (KM) at the measuring resistor (RM) which is indicative of the status of the control circuit.