Tilt Sensor Switch Circuit

The articles presents a simple water triggered switch which is effectively implemented as a super simple tilt sensor circuit. Let's know more.

易于构建电路

可以部署成本有效组件的准备好可用性，以制造基于超晶体管的简单电路中的倾斜传感器报警。

这里解释的倾斜传感器的国内版本只是一个简单的小玻璃或多瓶，包括两个金属针穿过其盖子，其盖子含有可忽略的水措施。

One can even try through one’s own innovations to develop a tilt sensor with just a 9V alkaline battery to power the entire circuit.

Circuit Operation

Referring to the simple tilt sensor circuit diagram below, transistor T1 is generally in dormant state and on tilting the water filled sensor assembly, the needles within the sensor container are subjected to a short-circuit caused by water with the availability of positive voltage at T1’s lower part triggering to get activated. T1’s activation triggers those of T2 and T3.

The next transistors stage which T2 provides static bias for T1 making it to be latched with T3 triggering T4 SCR which in turn powers the active piezo-sounder (BZ1). The activation once complete, the circuit can be neutralized using power push-off switch S1.

How to Setup the Circuit

为了调节电路的灵敏度，预设P1被强制集成，如果使用不同的易于获得的倾斜传感器，则可能是必要的。

以相同的方式，除了压电发声器（BZ1）之外的SCR（T4）也可以用关闭的可比部件替换。电阻R3电阻R3（100-150欧姆）不是强制性的。

Circuit Diagram

另一个倾斜开关电路

The above design could be much simplified as given below:

使用倾斜传感器保护摩托车

The two blue transistors along with the 100uF capacitor and the 1M resistor form a simple delay OFF timer circuit.

可以在密封的塑料球内看到水基传感器，其中两个金属端子浸在水面周围。终端以这样的方式定位，使得球的轻微倾斜从其中一个端子移除水接触。

摩托车是站时,球remains tilted breaking the water contact between the terminals.

然而，如果自行车从支架中移除并且尝试启动它，则球内的水被扰乱，允许端子之间的电接触。

As soon as this happens, the upper BC557 is instantly activated which in turn actuates the blue transistors raising the alarm.

The 100uF capacitor ensures that the alarm does not stop for a few seconds even after the vehicle is restored to its original tilted position.

The lower BC547 is linked with a supply from the ignition key, which means that while the bike is running or active, the entire circuits remains disabled. It is enabled only when the key is removed or unlocked.

For Preventing Car Theft

为了防止汽车盗窃，可以修改以上设计，如下所示：