HaaS506 - 简易起夜灯

• 简介
• 准备
• 硬件连接图
• 功能实现
• • • 1.继电器使用说明
    • 2. 5.8G雷达感应传感器模块说明
    • 3.简易代码
    • • 3.1测试log

简介

案例为了解决晚上起床找不到灯的问题。当你从床上起来时，雷达感应传感器检测到你的活动后自动打开电灯。省去了寻找电灯开关的麻烦。

准备

本案例需要的硬件

硬件连接图

功能实现

1.继电器使用说明

• GPIO18引脚低电平电压0V，拉高后电压为3.2V。继电器正极连接电压为3.3V。所以继电器设置为低电平或高电平触发均可。
• SI引脚控制左边继电器通断，S2控制右边继电器。
  

2. 5.8G雷达感应传感器模块说明

3.简易代码

main.py

from driver import GPIO
import utime as time
from bodyDetect import BD
import _thread#初始化时间
begin_time = 0
now_time = time.time()
value1 = 0# 初始化人体传感器
radar=GPIO()
radar.open('radar')
def bd_thread():global valuewhile True:bd = BD(radar)value = bd.irDetect()time.sleep_ms(1)def detection():global value,now_time,begin_timenow_time = time.time()if value == 1:begin_time = time.time()if p18.read() !=1:p18.write(1)if value == 0:if (now_time - begin_time >10):if p18.read() != 0:p18.write(0)if __name__ == '__main__':p18=GPIO()p18.open('p18')p18.write(0)_thread.start_new_thread(bd_thread, ())while True:time.sleep_ms(1)detection()     #控制开关等#传感器状态改变是打印logif value1 != value:print('change:',value)value1 = value

bodyDetect.py

from driver import GPIOclass BD(object):def __init__(self, gpioObj):self.gpioObj = Noneif not isinstance(gpioObj, GPIO):raise ValueError("parameter is not a GPIO object")self.gpioObj = gpioObjdef irDetect(self):if self.gpioObj is None:raise ValueError("invalid GPIO object")value = self.gpioObj.read()return value

board.json

{"name": "haas506","version": "2.0.0","io": {"p18": {"type": "GPIO","port": 18,"dir": "output","pull": "pullup"},"radar":{"type":"GPIO","port": 3,"dir": "input","pull":"pullup"}          },"debugLevel": "ERROR","repl": "enable","replPort": 0
}

3.1测试log

每次人体运动状态改变时会打印一次change，有人体活动为1，没有活动物体时为0。持续10s没有检测到人体活动，电灯自动关闭。

[17:21:36.804]收←◆\0
[17:21:38.808]收←◆POWERONREASON:0x0003,parse:,powerkey,pinReset.[17:21:40.646]收←◆change: 1[17:21:42.686]收←◆change: 0[17:21:43.987]收←◆change: 1[17:21:46.026]收←◆change: 0[17:21:50.706]收←◆change: 1[17:21:52.746]收←◆change: 0[17:21:54.767]收←◆change: 1