![]() ![]() When the voltage in the electrical system is high the signal is deactivated, as is the case when the vehicle motor is running and charging the battery via the electrical system. The circuit may connect to the vehicle electrical system through any available auxiliary port. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTSĭisclosed herein is a device, methods, and systems for a specialized circuit and alert system for use with any motorized vehicle with an integrated electrical system. 3 is a logic table defining the alarm states as related to the automobile operating state. 2 depicts how the device would be placed in the car seat.įIG. 1 is a block diagram of the invention components.įIG. BRIEF DESCRIPTION OF THE DRAWINGS FIGURESįIG. The system in the preferred embodiment can be configured for either 12 volt or 24 volt systems. In that case circuit is automatically re-activated when the motor is started, and will trigger again the next time the Engine is stopped. The alarm continues until the child is removed from the car seat and the pressure switch is then in the “open” position.Īs a convenience to the operator, the alarm may be temporarily inhibited via a button when the child is initially seated. ![]() The electronic module determines there is a voltage drop and then re-enables the alarm. When the automobile is later turned off the charging system is no longer active and the voltage drops to a resting battery voltage again. When the automobile charging system is higher than the “at rest” battery voltage the electronics defeat the alarm. The electronic circuit determines the voltage is at a higher state by measuring the voltage at the cigarette port. When the automobile is started the charging voltage of the automobile system is higher than when the automobile is off. When the child is placed in the seat the child's weight closes the pressure switch and activates the alarm. The electronics module is plugged into the cigarette lighter port of the vehicle. The pressure switch is connected to the electronics module with a noise device to indicate alarm. The alarm is activated by means of a pressure switch placed in or embedded within the child car seat. The present invention refers to an alarm system minimizing the possibility of leaving a child unattended in an automobile. The invention relates to automobile accessories and child safety devices, and car seat child alarms SUMMARY OF THE INVENTION Thus there remains a need for simple and reliable safety devices for preventing leaving a child in a vehicle. The system automatically confirms it is functioning every time a child is placed into the seat-the alarm sounds until the automobile is started and the alarm is suppressed by the electronics determining the automobile voltage is higher than the automobile battery resting voltage until the automobile is again shut off. Once the system is activated it will operate continuously and autonomously without any other intervention. This user simply places the pressure switch pad under the child and plugs the electronic module into the cigarette lighter port. Other solutions are hardwired into the automobile and are costly. An alarm with Bluetooth to a phone application only works if you have your phone. Other baby seat car seat alarm systems are complex and not reliable a proximity sensor with a keychain FOB can fail as a result of a change in routine such as a different person driving the car. CROSS-REFERENCE TO RELATED APPLICATIONS & CONTINUITY DATA ![]()
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