原标题：基于STM32甲醛检测仪蓝牙传输设计方案

　　功能描述：

　　1.采用stm32f103C8T6单片机;

　　2. 采集甲醛模块ZE08-CH2O的甲醛含量信息;

　　3.采用串口与HC-05蓝牙模块连接，通过蓝牙与手机APP进行通信，将甲醛信息传输至APP并显示;

　　4. 检测的甲醛信息显示在0.96寸的OLED屏幕上;

　　5.APP一秒接收一次来自蓝牙传输的甲醛信息，并会根据甲醛的含量显示出如下提示信息：

　　小于0.123mg/m3 显示字体： 绿色 正常

　　大于0.123mg/m3 小于0.456mg/m3 显示字体 ： 橙色 轻度超标 健康提醒 ，甲醛浓度已超标 ，请及时打开门窗

　　大于0.456mg/m3 显示字体 ：红色 严重超标 健康提醒 ，甲醛浓度已超标 ，请及时打开门窗

【STM32F103C8T6】

　　Mainstream Performance line, ARM Cortex-M3 MCU with 64 Kbytes Flash, 72 MHz CPU, motor control, USB and CAN

　　The STM32F103xx medium-density performance line family incorporates the high-performance ARM®Cortex®-M3 32-bit RISC core operating at a 72 MHz frequency, high-speed embedded memories (Flash memory up to 128 Kbytes and SRAM up to 20 Kbytes), and an extensive range of enhanced I/Os and peripherals connected to two APB buses. All devices offer two 12-bit ADCs, three general purpose 16-bit timers plus one PWM timer, as well as standard and advanced communication interfaces: up to two I2Cs and SPIs, three USARTs, an USB and a CAN.

　　The devices operate from a 2.0 to 3.6 V power supply. They are available in both the –40 to +85 °C temperature range and the –40 to +105 °C extended temperature range. A comprehensive set of power-saving mode allows the design of low-power applications.

　　The STM32F103xx medium-density performance line family includes devices in six different package types: from 36 pins to 100 pins. Depending on the device chosen, different sets of peripherals are included, the description below gives an overview of the complete range of peripherals proposed in this family.

　　These features make the STM32F103xx medium-density performance line microcontroller family suitable for a wide range of applications such as motor drives, application control, medical and handheld equipment, PC and gaming peripherals, GPS platforms, industrial applications, PLCs, inverters, printers, scanners, alarm systems, video intercoms, and HVACs.

　　KEY FEATURES

　　ARM®32-bit Cortex®-M3 CPU Core

　　72 MHz maximum frequency,1.25 DMIPS/MHz (Dhrystone 2.1) performance at 0 wait state memory access

　　Single-cycle multiplication and hardware division

　　Memories

　　64 or 128 Kbytes of Flash memory

　　20 Kbytes of SRAM

　　Clock, reset and supply management

　　2.0 to 3.6 V application supply and I/Os

　　POR, PDR, and programmable voltage detector (PVD)

　　4-to-16 MHz crystal oscillator

　　Internal 8 MHz factory-trimmed RC

　　Internal 40 kHz RC

　　PLL for CPU clock

　　32 kHz oscillator for RTC with calibration

　　Low-power

　　Sleep, Stop and Standby modes

　　VBAT supply for RTC and backup registers

　　2 x 12-bit, 1 μs A/D converters (up to 16 channels)

　　Conversion range: 0 to 3.6 V

　　Dual-sample and hold capability

　　Temperature sensor

　　DMA

　　7-channel DMA controller

　　Peripherals supported: timers, ADC, SPIs, I2Cs and USARTs

　　Up to 80 fast I/O ports

　　26/37/51/80 I/Os, all mappable on 16 external interrupt vectors and almost all 5 V-tolerant

　　Debug mode

　　Serial wire debug (SWD) & JTAG interfaces

　　7 timers

　　Three 16-bit timers, each with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input

　　16-bit, motor control PWM timer with dead-time generation and emergency stop

　　2 watchdog timers (Independent and Window)

　　SysTick timer 24-bit downcounter

　　Up to 9 communication interfaces

　　Up to 2 x I2C interfaces (SMBus/PMBus)

　　Up to 3 USARTs (ISO 7816 interface, LIN, IrDA capability, modem control)

　　Up to 2 SPIs (18 Mbit/s)

　　CAN interface (2.0B Active)

　　USB 2.0 full-speed interface

　　CRC calculation unit, 96-bit unique ID

　　Packages are ECOPACK®

　　Circuit Diagram

　　ZE08-CH2O甲醛传感器模组

产品详情

ZE08-CH2O型电化学甲醛传感器模组是一个通用型、小型化模组。利用电化学原理对空气中存在的CH2O进行探测，具有良好的选择性，稳定性。内置温度传感器，可进行温度补偿；同时具有数字输出与模拟电压输出，方便使用。ZE08-CH2O甲醛传感器模组是将成熟的电化学检测技术与精良的电路设计紧密结合，设计制造出的通用型气体模组

传感器特点

1.高灵敏度、高分辨率、低功耗、使用寿命长

2.提供UART、模拟电压信号、PWM波形等多种输出方式

3.高稳定性、优秀的抗干扰能力、温度补偿、卓越的线性输出

主要应用

ZE08-CH2O甲醛传感器模组广泛应用于便携式仪表、空气质量监测设备、空气净化机、新风换气系统、空调、智能家居设备等场所。

技术指标

注：产品参数如有变动，恕不另行通知