应用领域：汽车电子

方案类型：模块板卡

主控芯片：STM32F103VCT6;

方案概述

1、项目简介：

本项目是运用于挂车的一款电子锁控制装置，该控制板主要有GPS定位、GPRS数据数传、电子罗盘导向、胎压实时监测、震动检测等功能。用于挂车实时授权开锁，货物运输轨迹定位，异常碰撞报警等应用场景。

2、项目需求：

1 通过GPRS数据模块实时上报相关数据和心跳，数据格式需要满足JT/T-808协议;

2 实时上报GPS定位信息，间歇式休眠GPS模块;

3 通过开锁指令控制锁具的开启，关锁检测开关触发上报关锁信息;

4 使用过1000mAh的电池，待机能够保持在1个月以上的时间;

3、设计框架：

【 STM32F103VCT6 】

Mainstream Performance line, ARM Cortex-M3 MCU with 256 Kbytes Flash, 72 MHz CPU, motor control, USB and CAN

The STM32F103xC, STM32F103xD and STM32F103xE 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 512 Kbytes and SRAM up to 64 Kbytes), and an extensive range of enhanced I/Os and peripherals connected to two APB buses. All devices offer three 12-bit ADCs, four general-purpose 16-bit timers plus two PWM timers, as well as standard and advanced communication interfaces: up to two I2Cs, three SPIs, two I2Ss, one SDIO, five USARTs, an USB and a CAN.

The STM32F103xC/D/E high-density performance line family operates in the –40 to +105 °C temperature range, from a 2.0 to 3.6 V power supply. A comprehensive set of power-saving mode allows the design of low-power applications.

These features make the STM32F103xC/D/E high-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 intercom, and HVAC.

Key Features

Core: ARM® 32-bit Cortex® -M3 CPU

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

256 to 512 Kbytes of Flash memory

up to 64 Kbytes of SRAM

Flexible static memory controller with 4 Chip Select. Supports Compact Flash, SRAM, PSRAM, NOR and NAND memories

LCD parallel interface, 8080/6800 modes

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 with calibration

32 kHz oscillator for RTC with calibration

Low power

Sleep, Stop and Standby modes

VBAT supply for RTC and backup registers

3 × 12-bit, 1 μs A/D converters (up to 21 channels)

Conversion range: 0 to 3.6 V

Triple-sample and hold capability

Temperature sensor

2 × 12-bit D/A converters

DMA: 12-channel DMA controller

Supported peripherals: timers, ADCs, DAC, SDIO, I2 Ss, SPIs, I2 Cs and USARTs

Debug mode

Serial wire debug (SWD) & JTAG interfaces

Cortex® -M3 Embedded Trace Macrocell™

Up to 112 fast I/O ports

51/80/112 I/Os, all mappable on 16 external interrupt vectors and almost all 5 V-tolerant

Up to 11 timers

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

2 × 16-bit motor control PWM timers with dead-time generation and emergency stop

2 × watchdog timers (Independent and Window)

SysTick timer: a 24-bit downcounter

2 × 16-bit basic timers to drive the DAC

Up to 13 communication interfaces

Up to 2 × I2 C interfaces (SMBus/PMBus)

Up to 5 USARTs (ISO 7816 interface, LIN, IrDA capability, modem control)

Up to 3 SPIs (18 Mbit/s), 2 with I2 S interface multiplexed

CAN interface (2.0B Active)

USB 2.0 full speed interface

SDIO interface

CRC calculation unit, 96-bit unique ID

ECOPACK® packages

CIRCUIT DIAGRAM