151results about How to "Improve functional safety" patented technology

An electrical plug connector including two mating connectors. A first plug section includes a receiving sleeve which encircles the first coupling section and which carries a locking element which includes flexible tabs movable between a locking position and an unlocking position and which are pre-stressed in its locking position. Held displaceably on the receiving sleeve is a sliding or release sleeve which may be manually moved axially to engage the locking element and release the mating connector. The second plug section has a plug tube which surrounds the second coupling section. When the plug tube is inserted in the receiving sleeve, the locking element rests on the outside of the plug tube in its locking position whereby the plug sections are connected. The connectors can be released by actuating the sliding sleeve to move the locking element into its unlocking position.

An irradiation device for radiation treatment and a collimator (1) are used to define a beam of high-energy rays (2) with beam limitation by means of an iris diaphragm (5) having adjusting elements (7), and a mechanism that is used to direct the beams (2′) limited by the collimator (1) to the object to be treated (4) from all sides, wherein the parameters for direction, surface area, intensity and time of irradiation can be specified with the help of a control mechanism. An exact three-dimensional irradiation profile is produced, while keeping the costs and efforts regarding mechanical engineering, computation and irradiation time low. This is achieved by using at least one further iris diaphragm (6) located in coaxial alignment in the optical path, whereby the leaves (9, 9′, 9″, 9′″, 9″″, 9′″″) of the iris diaphragms (5, 6) are arranged in a staggered manner and in a rotational sense around their axis (11), so that the beam limited by the collimator (1) has the cross-section of a polygon (12), the number of corners of which complies with the number of the leaves of all iris diaphragms (5, 6), so that the leaves (9, 9′, 9″, 9′″, 9″″, 9′″″) allow for linear adjustment movements (13), the control mechanism being suitable to enable the irradiation of an irregular space through the overlaying and adjoining of many irradiated spaces (28).

In a device for activating a lace-up traction device for a shoe (1), comprising a slider (22) and a hingeably held tension lever (9) which can be pushed down when the shoe (1) is put on, said tension lever (9) in the pushed-down state being lockable to the slider (22) and being unlockable by pushing the slider (22) forward; said slider (22) comprising a guide (37) for a rocker (39), which rocker (39) elsewhere is guided in a further longitudinal guide (26) and which rocker (39) is pre-tensioned in the direction of hingeing forward and upward by means of a spring arrangement (7), a simple and clear design as well as good functional safety are achieved in that the guide (37) comprises two branches (37a, 37b) arranged at an angle in relation to each other; in that the slider (22) comprises a stopping face (28), and the rocker (39) comprises an associated engagement element (41) by means of which the slider (22) can be moved to the rear, into the rear snap-in position; and in that the slider (22) comprises a guide means (30), while the rocker (39) comprises an associated engagement element (41) by means of which the engagement element (41) of the rocker (39), which engagement element engages the guide (37), can be made to move to a position which is suitable for moving into the front branch (37a) of the guide (37).

A battery management system includes several first measuring units, each associated with at least one respective battery module of the battery to detect a measured variable. The battery management system also includes a control device having a first microcontroller and a second microcontroller, a first communication connection configured to transfer data between the first measuring units and the control device, and several second measuring units configured to detect the measured variable from the battery modules of the battery in addition to the detection of the measured variable by the first measuring units. A second communication connection is used to transfer data between the second measuring units and the control device. The first microcontroller is configured to evaluate measurement data detected by the first measuring units, and the second microcontroller is configured to evaluate measurement data detected by the second measuring units independently of the first microcontroller.

A plug-in connection device for the self-actuating electrical connection of a motor vehicle trailer to a towing motor vehicle with a socket (D) and a plug (S), which can be disposed on the motor vehicle trailer (for example the plug S) or the towing motor vehicle (for example socket D) During the coupling of the motor vehicle trailer to the towing motor vehicle, socket (D) and plug (S) can be aligned with respect to one another and can be moved by means of a drive (10), developed for example as a piston-cylinder configuration, relative to one another between an advanced connection position and a retracted resting position. Preferably a cover (5) of the socket (D) can be opened by displacing the contact insert (1), bearing contact sleeves (11, 12), in the direction of the connection position with the aid of drive (10). When the contact insert (1) is retracted into the resting position, the cover can be closed again. The plug (S) is supported such that it is resiliently yielding laterally against the action of a retaining spring (213).

A battery monitoring system includes a multiplexer, a self-diagnosis voltage generation circuit, a first voltage measuring circuit and a voltage measuring circuit which measure voltage signals in a first route and a second route inputted through the multiplexer, based on the self-diagnosis voltage generated from the self-diagnosis voltage generation circuit or based on the voltages of battery cells outputted from the input circuit, a comparator which compares measurement results of the first and second voltage measuring circuits, and a control unit which judges the presence/absence of a failure in a measuring route connected to the first voltage measuring circuit or the second voltage measuring circuit and the presence/absence of a failure of the first voltage measuring circuit itself or the second voltage measuring circuit itself, based on a comparison result by the comparator and which controls the input circuit, the multiplexer, the comparator, and the self-diagnosis voltage generation circuit.

A method for improving the functional security and increasing the availability of an electronic control system, particularly a motor vehicle control system, including hardware components and software components, wherein the hardware components are abstracted by at least one basis software component and/or a runtime environment, and in which an implemented security concept describes two or more software levels, wherein a first software level includes control functions of an application software and a second software level is designed as functional monitoring, for safeguarding against control function faults, wherein a data encryption, provided by at least one hardware component, and/or a data signature for securing the data of at least one communication channel of the hardware component is used with at least one first software component. The invention additionally describes an electronic control system for performing the method.

The invention concerns a method for controlling a motor vehicle drivetrain which comprises a drive motor, a multi-step, automated change-speed transmission and an automated separating clutch arranged between the drive motor and the transmission, and a shifting device with a selector lever which can be moved at least from a particular position in an upshift direction (“+” direction) for manually initiating an upshift and in a downshift direction (“−”) for manually initiating a downshift, and in which the transmission and the separating clutch can be controlled by a transmission control unit which is connected at least to a speed sensor, a brake pedal actuation sensor and a selector lever actuation sensor, such that when the motor vehicle is rolling with its drivetrain open the closing of the drivetrain is initiated by actuating the selector lever.

To improve the functional safety it is provided that when a first movement of the selector lever in a shift direction (“+” direction or “−” direction) is sensed, this is interpreted as a provisional command to close the drivetrain, and if a second movement of the selector lever in the same shift direction (“+” direction or “−” direction) is sensed within a specified confirmation time (Δt_B), this is interpreted as a confirmation of the provisional command to close the drivetrain and, as an implementation command, initiates the closing of the drivetrain.

The invention discloses a method for testing initial position angle of a motor rotor and solves the technical problem that the prior art is high in requirements on initial position angle testing conditions of the motor rotor and difficult in actual operation. The method includes following steps: step 1, applying a current i on a to-be-tested motor to enable the same to run; step 2, after the motor runs, enabling the current i to be zero; step 3, measuring voltage ud and uq of a shaft d and a shaft q of a motor stator; step 4, calculating according to a triangular function relation between ud and uq to acquire initial position angle deviation theta err of the motor rotor. The initial position angle deviation of the motor rotor is calculated by directly using the voltage of the d shaft and the q shaft of the motor stator, and corresponding relation between voltage at the motor end in a motor controller and the initial rotor position angle is made clear; the method is simple and suitable for engineering site operation; online fault diagnosis and error correction control can be realized, and system function safety can be improved.

A method for generating public keys for encrypting messages includes encrypting a message using a public key. The first message is capable of being decrypted using a private key associated with a recipient, the private key matching the public key. The public key includes a first and second part, the first part being the same for all recipients of the encrypted messages. The second part of the public key is determined using data that uniquely indicates the recipient.

A continuously variable transmission with high function security is provided with a revolving speed signal generation device, a resolving speed signal generation sensor, a conical plate position signal generation device and a conical plate position signal generation sensor. A signal device is arranged between a lubricating oil pump and an inlet of the lubricating oil pump and is used for detecting whether a filter screen is blocked or not. Moreover, a component is used for judging whether the oil pump fails or not according to a temperature difference value of a temperature sensor. In a whole system, common cause failure on selection and arrangement of the sensors can be avoided to the greatest extent, and the safety and the reliability of the continuously variable transmission are improved.

In a device for cleaning an inkjet print head (in particular the surface with nozzle exit openings) for a franking and/or addressing machine in which the print substrates are directed along a stationary but pivotably arranged inkjet print head, the entire nozzle exit surface is cleaned in a short time and a contamination of the transport region is avoided, with a small apparatus expenditure, by a wiping device formed by a driven wiping roller that is transversally, non-positively directed along the nozzle exit surface in a cleaning operation, and that continuously, non-positively rests on an associated cleaning element. The nozzle surface is repeatedly wiped off and the wiping roller is simultaneously cleaned in a single pass. An actuator of the wiping roller can be selectively coupled with an actuator for a cleaning and sealing device that operates the cleaning element, or can be autonomous. The cleaning element can be a stripper for the wiping roller that rests parallel to and positively on the wiping roller.

The invention relates to an electric circuit breaker that includes at least one mobile contact. The contact is connected to operating means that includes an electric motor (6). Movement converting means (16, 17) are provided for converting rotary movement of the motor (6) to translatory movement for linear movment of the mobile contact. The object is to provide an improved movement conversion means. According to the invention, the movement conversion means includes a first body, such as a screw (17), and a second body, such as a nut (16). The threads of the screw (17) and the nut (16) co-act in engagement with each other. The invention also relates to an electric plant that is equipped with such a circuit breaker, to the use of the breaker for breaking electric current, and to a method of breaking electric current with the aid of the inventive circuit breaker.

A flexible expansion joint is capable coping with a great extension for its limited length. The flexible expansion joint includes: a first sleeve to be put on an end part of a first pipe; an outer sleeve to be put on an end part of a second pipe so as to overlap the first sleeve and capable of moving axially relative to the first sleeve; a first sealing member; a second sealing member; a third sealing member; a first length limiter including a first stopper for limiting the axial movement of the first pipe and the first sleeve relative to each other; and a second length limiter including a second stopper for limiting the axial movement of the second pipe the outer sleeve relative to each other.

A food cutting machine including a base housing a motor, a cover for the base housing a cutting disk, a feeder part joined to the cover, and a feeder mouth which houses a presser to push the food. The presser and food feeder parts are easily removable. Additionally, the presser (4) incorporates a safety lever (15) which activates the power supply switch of the motor (32).

An information processing apparatus which implements a printing control function for generating printing control information for causing an image forming apparatus to execute printing outputting is disclosed. The information processing apparatus includes a core unit and an extension unit which can be added after the core unit is installed. The information processing apparatus further includes a launch processing unit which launches the extension unit; an extension function operation information requesting unit; an extension function operation information encrypting unit; an extension function operation information decrypting unit; and a printing control information generating unit.

The invention relates to a diverter switch with an operating member and an electric circuit. The electric circuit has a main branch (1) and a resistance branch (2) connected in parallel with the main branch (1). Each branch comprises a contact (11, 21) and a vacuum switch (12, 22). The resistance branch (2) comprises, in addition, a resistance (30). The main rotary selector contact is always operated before the resistance contact (21). According to the invention, the operating member is arranged, during operation, always to rotate the main contact (11) in one and the same direction of rotation. The invention also relates to a corresponding method for operating a diverter switch and use of such a switch.