簡(jiǎn)介

項(xiàng)目名稱：溫濕度傳感報(bào)警系統(tǒng)

設(shè)計(jì)思路：項(xiàng)目使用RT-Thread系統(tǒng)和PSOC6開發(fā)板，實(shí)現(xiàn)一個(gè)溫濕度報(bào)警系統(tǒng)。該系統(tǒng)通過wifi連接將數(shù)據(jù)上傳至OneNET云，后經(jīng)過前端開發(fā)，可以使數(shù)據(jù)清晰的展示。并且在溫濕度高于或低于某一數(shù)值時(shí)，蜂鳴器就會(huì)報(bào)警。

項(xiàng)目的優(yōu)勢(shì)：利用簡(jiǎn)單的構(gòu)建實(shí)現(xiàn)了對(duì)溫濕度的實(shí)時(shí)監(jiān)控，操作簡(jiǎn)單，成本較低。

流程圖

硬件部分

軟件部分

軟件包配置

.onenet_upload_entry代碼

static void onenet_upload_entry(void *parameter)
{
rt_pin_mode(deep, PIN_MODE_OUTPUT);
float t_l=10,t_h=40;//溫度下限10上限40
float hu_l=20,hu_h=65;//濕度下限20上限65
float hum,temp;
aht10_device_t dev;
const char *i2c_bus_name="i2c3";
rt_thread_mdelay(2000);
dev=aht10_init(i2c_bus_name);
if(dev==RT_NULL)
{
rt_kprintf("The sensor initializes failure");
}
rt_pin_write(deep, PIN_HIGH);
temp=aht10_read_temperature(dev);
hum=aht10_read_humidity(dev);
rt_thread_mdelay(1000);
while (1)
{
hum=aht10_read_humidity(dev);
rt_kprintf("humidity : %d.%d %%n",(int)hum,(int)(hum*10)%10);
temp=aht10_read_temperature(dev);
rt_kprintf("temperature: %d.%d C nn",(int)temp,(int)(temp*10)%10);
rt_thread_mdelay(1000);
/*蜂鳴器報(bào)警*/
if((int)tempt_h)
{
beep2();
}
else if ((int)humhu_h)
{
beep2();
}
/*上傳數(shù)據(jù)*/
onenet_mqtt_upload_digit("temperature", temp);
rt_thread_mdelay(1000);
onenet_mqtt_upload_digit("humidity", hum);
if (onenet_mqtt_upload_digit("temperature", temp) ||onenet_mqtt_upload_digit("humidity", hum) < 0)
{
LOG_E("upload has an error, stop uploading");
break;
}
else
{
LOG_D("buffer : {"temperature":%f C},{"humidity":%f%%}", temp,hum);
}
rt_thread_delay(rt_tick_from_millisecond(5 * 1000));
}
}

前端開發(fā)

定時(shí)器代碼

setInterval(
//設(shè)置定時(shí)器，7s更新一次
function () {
if (!getData())
return;
updateTemperature();
updateHumidity();
updateTH();
},
7000
);

定時(shí)器主要完成四個(gè)功能：

getData()：獲取最新數(shù)據(jù)，并加入到數(shù)據(jù)數(shù)組中
updateTemperature()：更新溫度刻度盤
updateHumidity()：更新濕度刻度盤
updateTH()：更新溫濕度面積堆疊圖

updateTemperature()、updateHumidity()、updateTH()代碼

function updateHumidity() {
option = {
tooltip: {
formatter: "{a}
: {c}℃",
},
toolbox: {
feature: {
restore: {},
saveAsImage: {},
},
},
series: [
{
name: "當(dāng)前濕度",
type: "gauge",
min: 0,
max: 100,
detail: { formatter: "{value}%" },
data: [{ value: ydata_hum[ydata_hum.length - 1], name: "濕度" }],
axisLine: {
lineStyle: {
color: [
[0.5, "#ff6b6b"],
[0.65, "#ffa94d"],
[0.8, "#69db7c"],
[1, "#4dabf7"],
],
},
},
},
],
};
mCharts2.setOption(option);
}
獲取最新溫濕度數(shù)據(jù)

function getData() {
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function () {
if (this.readyState == 4 && this.status == 200) {
console.log(this.responseText);
}
};
xmlhttp.open("GET", "http://api.heclouds.com/devices/product_id/datastreams", true);
xmlhttp.setRequestHeader("api-key", "your API Key");
xmlhttp.send();
...
}

項(xiàng)目功能

數(shù)據(jù)頁(yè)面展示

該項(xiàng)目實(shí)現(xiàn)了對(duì)溫濕度的實(shí)時(shí)監(jiān)控，通過ATH10獲取溫濕度數(shù)據(jù)，利用rw007將數(shù)據(jù)上傳到onenet云端，通過前端開發(fā)將數(shù)據(jù)可視化。可以設(shè)定溫濕度上下限，當(dāng)溫濕度不在范圍內(nèi)時(shí)，蜂鳴器工作，進(jìn)行報(bào)警。