Alarming device for preventing students from being missedmissing in school bus and control method of alarming device
A technology of an alarm device and a control method, which is applied to the safety device, signal device, and sound signal device of a power plant control mechanism, etc., which can solve problems such as high maintenance requirements, inconvenient promotion and use, and complicated devices, so as to improve the reliability of detection High efficiency, convenient air circulation and students calling for help, low cost effect
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[0020] see figure 1 It can be seen that the school bus alarm device to prevent missing students includes a normally closed switch 3, a wire 2 and an alarm controller 1, and the device is equipped with several normally closed switches 3 below each school bus passenger seat 4. This normally closed switch 3 When there is a student on the passenger seat 4 of the school bus, the switch will be disconnected due to the weight pressure of the student; All the normally closed switches 3 are connected in series, and both ends of the wire 2 are connected to the alarm controller 1 of the device or the original body controller on the vehicle, and the alarm controller 1 or the body controller sends an output current to the wire 2 to detect whether the wire 2 is conducting , to detect whether there are students in the car. The alarm controller 1 receives the ignition signal of the school bus through the ignition signal connection terminal 5 to detect the state of the vehicle, and the alarm ...
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