Intelligent bin (9) - vibration sensor (raspberries pie pico implementation)

一、模块展示

二、模块说明

此传感器有3个引脚,其中VCC需要接3.3-5V的电压,中间引脚接地,DO引脚是信号输出引脚,我们通过其进行倾斜感应.如上图所示,此传感器自带电源和开关两个LED灯,接通电源后,电源LED灯发光,当传感器触发倾斜时,开关LED灯发光.对于DO引脚,当开关LED发光时,其输出低电平,表示开关打开,当开关LED灯不亮时,其输出高电平,表示开关断开.用其我们可以很方便的实现倾斜断电保护功能.如上图中,此传感器还提供了一个灵敏度的电位调节单元,其工作原理电路图如下所示：

2.1 使用说明

1、产品不震动时,震动开关呈闭合导通状态,输出端输出低电平,绿色指示灯亮;
2、产品震动时,震动开关瞬间断开,输出端输出高电平,绿色指示灯不亮;

三、代码展示

Thanks to the shock sensor onboardLEDflashes too fast,so that it cannot be recognized by the naked eye,So this part callspico上自带的LEDDelay display,make the effect more obvious,But the delay time is too long,It will cause the sensitivity of the shock sensor to decrease,So this test uses 50ms延时

from machine import Pin
import utime

key = Pin(0, Pin.IN)
led_onboard = Pin(25, Pin.OUT)

while True:
    while key.value() == 0:
        print("no vibration")
        led_onboard.value(0)
        utime.sleep(0.05)
    while key.value() == 1:
        print("Vibration is sensed")
        led_onboard.value(1)
        utime.sleep(0.05)

四、效果展示

4.1 实物展示

emmm……Sensitivity is really bad,But the delay is lowered again,pico上LEDcan't see,Check it out soon,When using it anyway,There will be no delay,The delay is only added here to make the experimental phenomenon more obvious

4.2 代码效果展示