Device for reproducing information on a vehicle

p0001An apparatus for reproducing information on a motor vehicle

p0002The invention starts from an apparatus for reproducing information on a motor vehicle according to the preamble of claim 1.

p0003From DE 199 12 748 A1 a device of this type is known. The display can only be activated when a transmitted from the transponder code was valid summarizes achieved. Only the so identity card as a authorized user are the integrated ressierenden data. Other persons who are not in the possession of a valid transponder, the access to this data is denied. Based on the received code, the display can also be updated automatically, without the need for additional control signals from the user would be required. Since the transmission process of the code signal is performed before the initiation of the starting process of the motor vehicle, the user can inform thus already in advance of interest operating states of the motor vehicle, before applying the ignition.

p0004However, it is assumed that the vehicle can take without any particular problems in operation. but this is not always the case. If, for example, a vehicle powered by hydrogen, is draining leaking hydrogen gas for the vehicle user generally undetectable while can be dangerous commissioning of the vehicle. An indication of contrast unimportant operating states poses the risk of a false sense of security for the vehicle user.

p0005The invention is based, to provide a device of the type mentioned, which increases the operational reliability considerably the task. This object is achieved by the features of claim 1.

p0006The vehicle user receives an additional information via an optionally critical gas concentration. Due to the lack of a warning signal it receives the security of being able to take the vehicle safely in operation. The warning signal may be preferably optically and / or acoustically. It may also be supplemented by a warning signal which is output from the vehicle itself and which is also driven by the analysis means.

p0007The analyzer can be activated advantageously when the transponder sends a code. Thereby, the power consumption of the analyzer is kept low and updates the determination of the gas concentration at the very moment in which the vehicle user is preparing to take the vehicle into operation. During vehicle operation, the measurement can be performed several times and, if a warning signal is output.

p0008In an expedient refinement, it is provided that the display while performing the measurement gives a signal that differs from the signal after the measurement.

p0009Further expedient refinements arise from additional dependent claims and from the description.

p0010An embodiment of the invention is illustrated in the drawing and will be described in more detail below. It show the

p0011Fig. 1 shows a device according to the invention in plan view, and FIG. 2 shows the device of Fig. 1 from the front.

p0012In a housing 1 of a portable vehicle key 1 'with a key bit 4 is an LED 2, a gas sensor element 3, remote controls 5, a warning horn 6, a represented as a board analysis device 7 and a battery 8. The board is sitting the all the electronics, with a question and answer dialogue in the context of a known keyless entry system is feasible.

p0013The triggering of the analysis of a possibly critical gas concentration is carried out in conjunction with the opening or closing of the doors or on actuation of an operating element in conjunction with a start or stop operation of the motor vehicle. Additionally, it is also possible for the analysis operation (not shown) arbitrarily means of its own operating element analogous to trigger the controls.

p0014For this purpose, an operating element 5 (eg ON) or separate input device that is called "H2 sensor active" operated and launched the H2 measurement. In addition, the measurement can be started from a vehicle proximity sensor (not shown) on the approach from the vehicle a request signal is emitted. detects the vehicle key 1 of a person responding to the vehicle. "itself as belonging, it sends from the authorized user, the response signal and simultaneously starts the measurement of the gas concentration.

p0015As long as the measurement is running and there is no result, the LED flashes yellow 2.

p0016When the measurement is completed and it has been found not hydrogen, the LED 2 flashes green.

p0017Detected Hydrogen LED 2 flashes red. With HIGH alarm (special vol.% Threshold), the LED flashes red double frequency and in addition, an acoustic warning (eg high-frequency beep).

p0018The hydrogen warning device shown uses the same power source (battery 8) as the normal key functions.

p0019In addition, the battery can be rechargeable 8 and the charge will be made unless the key 1 'is inserted in the vehicle. During this time, the H2-warning function is active.

p0020If the key V is not plugged in, the H2 sensor returns to a applizier- ble time back to the state "passive" back.

p0021According to the method described above may be sensed with an appropriate sensor, other types of gases (eg CO, CO2, benzene, ozone etc.). Further, it is possible to simultaneously send the output of a warning signal on a key message to the vehicle, eg to perform there an internal vetting, or to deny access to the vehicle by means of the remote control, or other, einzu- the safety improvement measures are derived ,

p0022If the vehicle itself a gas sensor, which responds to an occurring there gas outlet, the vehicle, the remote control can give an appropriate message to the key that is issued to the key as a warning signal and informs the user and warns of approaching the vehicle to press or to enter the vehicle.