Motorcycle lock anti-theft alarm electronic product program software and hardware development, design and production

Motorcycle lock anti-theft alarm electronic product program software and hardware development, design and production

Mini motorcycle lock anti-theft alarm

One. Overview:

There are many types of anti-theft alarms. We now introduce a mini-motorcycle lock anti-theft alarm. This alarm is installed in the motorcycle lock. As long as the lock is opened for more than 10 seconds, the alarm will sound like a bell. Attract the attention of pedestrians. This alarm is low in cost and adds the function of locking and guarding the anti-theft car lock.

右图是控制功能简图。 整机由一片8位微处理器HT48R05A-1进行控制，考虑到整个电路的成本，我们使用了价廉物美的超小型振动传感器，只要车锁受到振动，如果超过一定的时间，单片机将发出警铃报警声，提示情况异常。虽然整个电路很小，但发出的报警声在20cm内声强却高达121dB。在一定部的范围内均具有较强的报警声。

电路中我们还增设了一个解除开关，可使车锁在不需报警时（例如自行运输途中）取消报警功能。只要在报警功能开启时才具备相应的功能。

The circuit is equipped with one horizontal and one vertical vibration sensor to ensure that the alarm function can be excited by vibration in different directions. Once it is vibrated, it will send out 5 alarms. If it continues to be vibrated, the alarm will continue until the vibration is eliminated. When there is no vibration, the alarm is in sleep state and consumes little electrode. Once there is vibration, the MCU will wake up immediately. In the alarm activation state, if the key is normally turned on, the alarm will not sound an alarm, but as long as it vibrates abnormally Will call the police.

The circuit uses three AAA batteries. If the alarm is once a day, it will be used normally for about half a year, and the structure of the car lock is also convenient for battery replacement.

Taking into account the outdoor use or the susceptibility to strong vibration, the entire circuit uses SMD components and technology, which can withstand strong vibrations. At the same time, the circuit board is cured with epoxy resin after the circuit is assembled to meet the waterproof requirements.

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