| 主权项 |
1. Immobilization system with door opening and theft alarm function for a vehicle, comprising:
an electronic immobilizer having a smart relay interface via which a control signal is transmitted and a receive signal is received, and a smart relay devised as a breaker relay for receiving the control signal transmitted by the electronic immobilizer and for transmitting the receive signal to the electronic immobilizer, wherein the smart relay is arranged outside the electronic immobilizer, comprises an internal breaker relay with breaker contacts which are electrically guided to the outside, is devised to activate the internal breaker relay by means of the control signal which is activating, and to deactivate the breaker relay in case of the control signal which is deactivating, and comprises sensor electronics which by measuring monitor at least one of the breaker contacts and from there generate the respective receive signal, wherein one or more of the following parameters as a voltage, a current, an impedance or a reactance to the ground or to the battery supply or between two of the breaker contacts or a signal being measured, in order to be able to recognize during measurement a non-permissible state caused by bridging or by a disconnection of the breaker contacts guided to the outside; the electronic immobilizer further comprising: a) a micro-controller control system, comprising a micro-controller and a memory which is connected to the micro-controller integrally or externally, the control signal and the receive signal being connected to the micro-controller, b) a cellular radio interface with a cellular radio module for transmitting and receiving a cellular radio signal via an aerial interface, the cellular radio module being connected to the micro-controller control system, c) a second interface with an outgoing closure system control signal to a central closure system for doors of the vehicle, the second interface being connected to the micro-controller control system, and d) a near field radio interface with a near field radio module for receiving a near field radio signal via an additional aerial interface, the near field radio module being connected to the micro-controller control system, e) the micro-controller control system being adapted as follows: to keep the cellular radio interface and the near field radio interface ready-to-receive in order to receive data, in case of receipt of an immobilization signal by the cellular radio interface or by the near field radio interface, to activate an immobilization function, in case of detection of a release signal by the cellular radio interface or the near field radio interface, to deactivate the immobilization function, with activated or deactivated immobilization function, to transmit the corresponding closure system control signal and the corresponding control signal to the external smart relay, the corresponding control signal being activating or deactivating, to monitor the receive signal in terms of a change into a non-permissible state and to trigger a theft alarm if the non-permissible state is detected. |
