PM2.5测量&PMS5003粉尘传感器使用（附程序）

来源：互联网发布：汽车月供怎么算法编辑：程序博客网时间：2024/04/29 12:06

　　PMS5003是一款基于激光散射原理的通用颗粒物浓度传感器，可测量PM1.0、PM2.5、PM10的值，数据通过UART串口直接输出，使用时只需根据传输协议将数据解码即可。

传感器详情请查看产品数据手册，下载连接：PMS5XXX 系列数据手册

下附基于STM32的程序

/** * 根据协议格式接收数据，串口每接收一次数据调用一次 */void pms5003ReceiveDataDepare(uint8_t data){    static uint8_t state;    static uint8_t data_len = 30, data_cnt;  // 数据帧长度 = 2*13 + 2     static uint8_t rxBuffer[33];    if (state == 0 && data == 0x42) {  // 起始符1判断        state = 1;        rxBuffer[0] = data;     } else if (state == 1 && data == 0x4d) {  // 起始符2判断        state = 2;        rxBuffer[1] = data;    } else if (state == 2 && data_len > 0) {  // 开始接收数据        data_len--;        rxBuffer[2 + data_cnt++] = data;        if(data_len == 0)   state = 3;  // 数据接收完成    } else if (state == 3) {        state = 0;        data_cnt = 0;         data_len = 30;         pms5003ReceiveDataAnl(rxBuffer);      }}/** * 根据协议格式解析数据，接收一帧数据完成后调用 */void pms5003ReceiveDataAnl(uint8_t *data_buffer){    uint8_t i;    uint32_t sum = 0;    /* 校验和计算 */    for (i=0; i<30; i++) {        sum += data_buffer[i];    }    /* 接收数据校验和判断 */    if (sum != ((data_buffer[30]<<8) | data_buffer[31])) {        return;    }    /* 大气环境下 */    pm1_val  = (data_buffer[10] << 8) | data_buffer[11];    pm25_val = (data_buffer[12] << 8) | data_buffer[13];    pm10_val = (data_buffer[14] << 8) | data_buffer[15]; }/** *  串口3设置，用于与PMS5003通信   B10  PB11 */void usart3Config(void){    GPIO_InitTypeDef GPIO_InitStructure;    NVIC_InitTypeDef  NVIC_InitStructure;    USART_InitTypeDef USART_InitStructure;    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);    RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);  // RCC_APB1 !!!    /* Configure USART3.Tx(PB10) as alternate function push-pull */    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;    GPIO_Init(GPIOB, &GPIO_InitStructure);    /* Configure USART3.Rx(PB11) as input floating */    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;    GPIO_Init(GPIOB, &GPIO_InitStructure);    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);    NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;                NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;       NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;             NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;                 NVIC_Init(&NVIC_InitStructure);       /* USART3 Mode config */    USART_InitStructure.USART_BaudRate = 9600;      USART_InitStructure.USART_WordLength = USART_WordLength_8b;    USART_InitStructure.USART_StopBits = USART_StopBits_1;    USART_InitStructure.USART_Parity = USART_Parity_No;                         USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;                                                  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;    USART_Init(USART3, &USART_InitStructure);    USART_ClearITPendingBit(USART3, USART_IT_RXNE);     /* Enable USART3 receive interrupt */    USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);     /* Enable USART3 */    USART_Cmd(USART3, ENABLE);}void USART3_IRQHandler(void){    uint8_t com_data;    if (USART_GetITStatus(USART3, USART_IT_RXNE)) {        USART_ClearITPendingBit(USART3, USART_IT_RXNE);          com_data = USART3->DR;        pms5003ReceiveDataDepare(com_data);         }}

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