便宜好用海凌科LD2420人体传感器装入86开关

slychen

一直在用LD2410作为人体传感器在用，最近想在餐厅的开关里装人体传感器，但2410的尺寸偏大装不下，就找了个尺寸合适的2420装入，没想到居然还挺好用的。

硬件接法参照2420手册：esp8266的RX接2420的ot1、TX接2420的RX。
增加TEMT6000，接入esp8266点ADC接口作为光照传感器。

原来这86开关是8266控制的，用细线将几个IO口引出接左边为TEMT6000光线传感器，右边为LD2420:


装好点样子，左边的按键开了个孔，嵌入个亚克力给光照传感器透光：


web界面：


Homeassistant界面：



esphome代码如下：

esphome:
  name: dinner_room_sensor_switch

esp8266:
  board: esp01_1m

# Enable logging
logger:
  baud_rate: 0
# Enable Home Assistant API
api:


ota:
  platform: esphome
  password: ""

wifi:
  ssid: !secret wifi_ssid #改为你自己家的WIFI名称
  password: !secret wifi_password #改为你家的WIFI密码

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Dinner Room Sensor Switch"
    password: ""
web_server: 
  port: 80

captive_portal:
uart:
  id: uart_bus  
  tx_pin: GPIO1   #使用D1 mini RX
  rx_pin: GPIO3   #使用D1 mini TX
  baud_rate: 115200
  parity: NONE
  stop_bits: 1    

binary_sensor:    
  # 物理按钮开关
  - platform: gpio
    pin: GPIO05
    
    name: "Switch1"
    internal: true
    on_press:
      then:
        - switch.toggle: relay_1
        - logger.log: "Power Button Turned Press!"
    filters:
      - delayed_on_off: 50ms


  - platform: gpio
    pin: GPIO04
    
    name: "Switch2"
    internal: true
    on_press:
      then:
        - switch.toggle: relay_2
        - logger.log: "Power Button Turned Press!"
    filters:
      - delayed_on_off: 50ms

  - platform: ld2420
    has_target:
      name: Presence
    
switch:
  - platform: gpio
    pin: GPIO14
#反向开关
    #inverted: true
    name: "餐厅开关1"
    id: relay_1  
  - platform: gpio
    pin: GPIO13
#反向开关
    #inverted: true
    name: "厨房大灯"
    id: relay_2 
    

ld2420:
  uart_id: uart_bus
text_sensor:
  - platform: ld2420
    fw_version:
      name: Firmware version

sensor:
  - platform: ld2420
    moving_distance:
      name : Moving Distance

  - platform: adc
    pin: A0
    name: "餐厅光照度"
    device_class: illuminance
    unit_of_measurement: lx
    filters:
      - lambda: |-
          return (x / 10000.0) * 2000000.0;
    update_interval: 10s 


select:
  - platform: ld2420
    operating_mode:
      name: Operating Mode

number:
  - platform: ld2420
    presence_timeout:
      name: Timeout Presence 
    min_gate_distance:   #最小门数，最小门数不要选择0，否则会有底噪干扰
      name: Min Gate
    max_gate_distance:  #最大门数，超过12无效，每个门的距离大概是0.7米，按照自己的需求选择
      name: Max Gate
    # See "Number" section below for detail

    gate_move_sensitivity:
      name: Move Calibration Sensitivity Factor
    gate_still_sensitivity:
      name: Still Calibration Sensitivity Factor
#直接选择设置各个门的阈值，后面根据距离可以自己增加门数到12
    gate_0:
      move_threshold:
        name: Gate 0 Move Threshold
      still_threshold:
        name: Gate 0 Still Threshold
    gate_1:
      move_threshold:
        name: Gate 1 Move Threshold
      still_threshold:
        name: Gate 1 Still Threshold
    gate_2:
      move_threshold:
        name: Gate 2 Move Threshold
      still_threshold:
        name: Gate 2 Still Threshold  
    gate_3:
      move_threshold:
        name: Gate 3 Move Threshold
      still_threshold:
        name: Gate 3 Still Threshold  
    gate_4:
      move_threshold:
        name: Gate 4 Move Threshold
      still_threshold:
        name: Gate 4 Still Threshold                       
button:
  - platform: ld2420
    apply_config:
      name: Apply Config
    factory_reset:
      name: Factory Reset
    restart_module:
      name: Restart Module
    revert_config:
      name: Undo Edits

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因为开关距离餐桌较近（2米左右），每个门代表0.7米，所以可以将传感门设置最小为1、最大为3，避免误触发。gate_0到gate_4的那段为直接设置从门0到门4的阈值改变灵敏度；也可以改为选择每个门来分别设置每个门的阈值，用了这种设置原来每个门直接设置的滑块就不会出现，代码如下：

number:
  - platform: ld2420
    presence_timeout:
      name: Detection Presence Timeout
    min_gate_distance:
      name: Min Gate
    max_gate_distance:
      name: Max Gate
    gate_select:
      name: Select Gate to Set
    still_threshold:
      name: Set Still Threshold Value
    move_threshold:
      name: Set Move Threshold Value

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另外LD2420的自动校准也挺好用的，可以排除干扰源：在前面没有人的情况下Operating Mode（运行模式），选择Calibrate（校准）让它收集底噪信息约两三分钟后，它会计算这段时间的平均底噪信息，按下Aply Config，    就会自动保存校正结果排除底噪干扰。
另外简单说明下：所谓的门的概念有点不好理解，其实就是距离区间，一个门的距离大概0.7米，从离传感器最近的0门到最远12门大概就是8米多的距离；每个门的阈值调整就是调整这距离区间内的灵敏度，将人体移动感应到的信号值大小从0到65535分级，如设置值1000，就表示感应移动信号强度达到1000时传感器就发出有人的信号，设置数值越大就表示人体移动幅度越大传感器才发出有人信号。

Ari

这个开关是自己diy的吗

bugensui

[backcolor=rgba(127, 127, 127, 0.3)]  没有看懂