Alarm system

Abstract

The invention discloses an alarm system which comprises a distance sensor, a comparator and an alarm switch. The distance sensor is used for converting distance signals to voltage signals. The comparator is connected to the distance sensor and outputs high levels when voltage signals are smaller than a preset voltage signal. The alarm switch is connected to the comparator and forms a closed loop together with an alarm device when receiving the high levels. The alarm system can remind passengers to pay attention to the safety of a vehicle pulling in a station.

Description

technical field [0001] The invention relates to the field of alarm, in particular to an alarm system. Background technique [0002] The bus is one of the convenient means of transportation for people to go to and from get off work, but also because of its public characteristics, there are extremely many passengers waiting for the bus. Passengers waiting for the bus will stare at the number of the bus when they don't know when the bus they want to take will come. The bus cannot be parked on the side of the road, which not only affects the normal movement of the subsequent vehicles and the smooth flow of traffic; the most important thing is that due to the huge inertia of the bus, it cannot stop immediately when parking, and the passengers do not know how to avoid it in time, which can easily cause the bus to hit the road. Accidents of passengers; moreover, most passengers do not get on the bus in order, crowding forward and backward, often ignoring the efforts of other passe...

AI Technical Summary

Problems solved by technology

Passengers waiting for the bus will stare at the number of the bus when they don't know when the bus they want to take will come. The bus cannot be parked on the side of the road, which not only affects the normal movement of the subsequent vehicles and the smooth flow of traffic; the most important thing is that due to the huge inertia of the bus, it cannot stop immediately when parking, and the passengers do not know how to avoid it in time, which can easily cause the bus to hit the road. Accidents of passengers; moreover, most passengers do not get on the bus in order, crowding forward and backward, often regardless of the efforts of other passengers to squeeze up, and it is extremely easy to cause accidents caused by stampedes and quarrels

[0003] Since the existing bus system does not have such a humanized design, designing an alarm system that can remind passengers to pay attention to safety has become a problem that needs to be solved urgently

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