环境监测APP的角色主要有一种：
角色权限如下：
普通用户：定位及查看、登陆与注册、查看天气、环境污染物的浓度和风力风向以及舒适度、设置绑定设备、提建议、查看新消息提醒、是否开启消息通知和WIFI下自动更新等功能。(The main role of the environmental monitoring APP is:

The role permissions are as follows:

Ordinary users: positioning and viewing, landing and registration, the weather, the concentration of environmental pollutants and wind wind direction and wind direction and comfort, setting up binding equipment, suggestion, view new message reminding, whether to open message notification and automatic update under WIFI.)