Device and method to detect presence in a motor vehicle
First Claim
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1. A device to detect the presence of a living being in a motor vehicle, comprising:
- a carbon dioxide sensor to measure a concentration value representing a carbon dioxide concentration in the motor vehicle;
an analysis unit to compare at least one of the concentration value and a change value representing a change in the concentration value over time with at least one threshold;
a transmitting device activated when at least one of the concentration value and the change value exceeds the threshold and emitting radiated signals; and
a receiving device to activate an indicator device when the radiated signals are received, wherein the receiving device and the indicator device are attached to a vehicle key, and wherein the indicator device issues at least one of a visual and haptic warning signal upon activation.
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Abstract
A device to detect the presence of a living being in a motor vehicle includes
- a carbon dioxide sensor to measure a concentration value representing the carbon dioxide concentration in the motor vehicle,
- an analysis unit to compare the concentration value or a change value representing the change in the concentration value over time to a threshold,
- a transmitting device activated when the concentration value or the change value exceeds the threshold and emitting radiated signals by way of an antenna and
- a receiving device that activates an indicator device when these radiated signals are received by way of an additional antenna.
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Citations
10 Claims
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1. A device to detect the presence of a living being in a motor vehicle, comprising:
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a carbon dioxide sensor to measure a concentration value representing a carbon dioxide concentration in the motor vehicle; an analysis unit to compare at least one of the concentration value and a change value representing a change in the concentration value over time with at least one threshold; a transmitting device activated when at least one of the concentration value and the change value exceeds the threshold and emitting radiated signals; and a receiving device to activate an indicator device when the radiated signals are received, wherein the receiving device and the indicator device are attached to a vehicle key, and wherein the indicator device issues at least one of a visual and haptic warning signal upon activation. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method to detect the presence of a living being in a motor vehicle, the method comprising:
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measuring a concentration value representing a carbon dioxide concentration in the motor vehicle; comparing at least one of the concentration value and a change value representing a change in the concentration value over time to a threshold; activating a transmitting device for emitting radiated signals via an antenna when at least one of the concentration value and the change value exceeds the threshold; and activating an indicator device by a receiving device when the radiated signals are received by way of another antenna, wherein the receiving device and the indicator device are attached to a vehicle key, and wherein the indicator device issues at least one of a visual and haptic warning signal upon activation. - View Dependent Claims (8, 9, 10)
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Specification