Abstract: A method for processing a user request via a control system of an elevator system comprising: receiving the user request in the control system; generating an identifier via the control system that enables a positive identification of the user request; sending the identifier from the control system to a mobile device associated with the user request, the mobile device configured to receive the identifier and to send an acknowledgment confirming receipt of the identifier in the mobile device to the control system when the mobile device receives a detection signal emitted by a transmitter attached to an elevator car of the elevator system; and when the acknowledgment is received in the control system assigning the user request to a first category or to a second category.

Abstract: A method of operating a computer-controlled first device for establishing a secure data communication with a computer-controlled second device in a passenger transportation arrangement distributed control system includes: generating an encryption key including a public and private key pair; creating credentials (e.g. X.509 certificate) based on the generated encryption key; preparing a certificate signing request CSR and dispatching the CSR via a secured data communication path to a certificate authority CA that is based on a public key infrastructure PKI operated by the passenger transportation arrangement operator; receiving the certificate from the CA with a signature using a private key held secret by the operator; establishing the secure data communication with the second device by transmitting the credentials to the second device, wherein the second device accepts establishing the secure data communication upon verification of the signature of the credentials executed using a public key of the operator.

Abstract: An elevator system is provided in which an elevator car is movable in an elevator shaft between two adjacent floors of a building using a traction sheave drive, wherein an elevator control unit for moving the elevator car from one of the floors to the other of the floors controls the traction sheave drive by means of a control signal using a value for the traction sheave diameter, the elevator controller being further designed to control after an initial configuration of the elevator system with an iterative adaptation of the value for the traction sheave diameter used to determine the control signal in order to increase the landing accuracy of the elevator car.

Abstract: A safety device for controlling safety-relevant functions in an elevator system is configured, on the basis of input signals from at least one first component of the elevator system which provides information regarding current conditions within the elevator system, for example a current position and speed of a car, not only to control at least one second component, such as a brake, of the elevator system such that an unintended travel movement of the car is prevented. The safety device also controls at least one third component, such as a door drive, of the elevator system such that an unintended movement of a car door is prevented. In the safety device, both a UCM (unintended car movement) function and a UDM (unintended door movement) function are thus implemented.

Abstract: A car controller for an elevator car of an elevator system can be arranged on the elevator car. The car controller obtains a primary door opening request from an elevator controller of the elevator system, obtains at least one control signal, the at least one control signal indicating whether the elevator car is in a state intended for opening a car door of the elevator car, and transmits or withholds a secondary door opening request on the basis of the primary door opening request and the at least one control signal.

Abstract: A method of operating a computer-controlled first device for establishing a secure data communication with a computer-controlled second device in a passenger transportation arrangement distributed control system includes: generating an encryption key including a public and private key pair; creating credentials (e.g. X.509 certificate) based on the generated encryption key; preparing a certificate signing request CSR and dispatching the CSR via a secured data communication path to a certificate authority CA that is based on a public key infrastructure PKI operated by the passenger transportation arrangement operator; receiving the certificate from the CA with a signature using a private key held secret by the operator; establishing the secure data communication with the second device by transmitting the credentials to the second device, wherein the second device accepts establishing the secure data communication upon verification of the signature of the credentials executed using a public key of the operator.

Abstract: A method for communicating data in a computer network between a first computer and a second computer, in particular used in a passenger transport system, and a computer network configured to carry out this method house the first computer and the second computer together in a space protected against unauthorized access. The first computer and the second computer are connected to one another via a first data connection and a second data connection. The second data connection extends exclusively within the protected space and exclusively allows data to be transmitted between the first computer and the second computer. The method includes at least the steps of generating authentication data by the first computer and transmitting the authentication data from the first computer to the second computer via the second data connection.

Abstract: A method establishing a protected data communication connection between a passenger transport system controller and a mobile device includes steps of: establishing an unprotected data communication connection between controller and mobile device; establishing a first protected data communication connection between controller and a common external computer and a second protected data communication connection between mobile device and computer; transmitting a token via the unprotected connection; transmitting the token to computer via both the first and the second protected connections; generating in computer two key pairs each including a public key and a private key; transmitting first key pair private key and second key pair public key to controller and transmitting second key pair private key and first key pair public key to mobile device; converting the unprotected connection into the protected connection by encrypting the data to be transmitted using the key pairs.

Abstract: A process for operating an elevator control device, whereby for local access to the elevator control device via a programming device, the elevator control device automatically sends an identifier to the programming device and the identifier is input to an operator panel associated with the elevator control device. The elevator control device permits the local access when the previously sent identifier has been entered correctly within a predetermined input time.

Abstract: A process for operating an elevator control device, whereby for local access to the elevator control device via a programming device, the elevator control device automatically sends an identifier to the programming device and the identifier is input to an operator panel associated with the elevator control device. The elevator control device permits the local access when the previously sent identifier has been entered correctly within a predetermined input time.