基本信息
源码名称：汽车电池监控系统
源码大小：1.77M
文件格式：.zip
开发语言：C/C++
更新时间：2019-03-27
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源码介绍
监控汽车电池的嵌入式应用程序，非常好用的程序，电池管理系统不仅要监测混合动力汽车电池的充放电电流、总电压和剩余电量SOC，还要预测电池的功率强度，以便监控电池的使用状况，并且不对电池造成伤害
监控汽车电池的嵌入式应用程序，非常好用的程序，电池管理系统不仅要监测混合动力汽车电池的充放电电流、总电压和剩余电量SOC，还要预测电池的功率强度，以便监控电池的使用状况，并且不对电池造成伤害
/*
* data_access.c
* 数据管理模块
*/
#include <stdio.h>
#include <string.h>
#include <semaphore.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/types.h>
#include <fcntl.h>
#include <include/config.h>
#include <include/user_typedef.h>
#include "data_access.h"
/********************************************************************************************
*
* 数据向文件保存部分
*
********************************************************************************************/
#define LEN 1584 112
int fpd;
static const uint8 day_per_month[12] =
{31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
static struct stat state;
void write_int(int i)
{
char tmp;
i = i%100;
tmp = i/10 '0';
write(fpd,&tmp,1);
tmp = i%10 '0';
write(fpd,&tmp,1);
}
int write_time(datetime_type t)
{
int daya,dayb;
char tmp;
int i;
// t.year=9;
// t.sec=3600*24*123 3600*11 60*26 1;
write_int(t.sec/3600%24);
tmp = '.';
write(fpd,&tmp,1);
write_int(t.sec%3600/60);
tmp = '.';
write(fpd,&tmp,1);
write_int(t.sec%60);
tmp = ':';
write(fpd,&tmp,1);
write_int(t.year);
tmp = '.';
write(fpd,&tmp,1);
daya = t.sec/3600/24;
dayb =0;
for(i=0; dayb<=daya&&i<12; i )
{
if( (i==1) && ((t.year 2000)%400==0) || (((t.year 2000)%4==0)&&((t.year 2000)%100!=0)) )
{
dayb = 29;
}
else
{
dayb = day_per_month[i];
}
}
write_int(i);
tmp = '.';
write(fpd,&tmp,1);
write_int(day_per_month[i-1] -dayb daya 1); //这里不是很清楚
tmp = 0x2c;
write(fpd,&tmp,1);
return 0;
}
int write_float(float d)
{
int data;
unsigned char v;
data = (int)(d*100 0.5);
data = data%1000;
v = data/100 '0';
data = data%100;
write(fpd,&v,1);
v = 0x2e;
write(fpd,&v,1);
v = data/10 '0';
data = data%10;
write(fpd,&v,1);
v = data '0';
write(fpd,&v,1);
v = 0x2c;
write(fpd,&v,1);
return 0;
}
int file_save_init()
{
int len,i,j;
char tmp,a,b;
fpd = open("last.csv",O_RDWR|O_CREAT|O_APPEND);
if(fpd == -1)
{
printf("error\n");
return 0;
}
stat("last.csv",&state);
len = state.st_size;
if(len <LEN)
{
lseek(fpd,0,SEEK_SET);
for(i=1;i<=BOX_MAX;i )
{
write(fpd,"时间",4);
tmp= 0x2c;
write(fpd,&tmp,1);
for(j=1;j<=PART_MAX;j )
{
if(i/10==1)
write(fpd,"1",1);
tmp = i%10 '0';
write(fpd,&tmp,1);
write(fpd,"箱",2);
if(j/10==1)
write(fpd,"1",1);
tmp = j%10 '0';
write(fpd,&tmp,1);
write(fpd,"节",2);
tmp = 0x2c;
write(fpd,&tmp,1);
}
}
}
lseek(fpd,-2,SEEK_END);
if(1 != read(fpd,&a,1) || 1 != read(fpd,&b,1) )
return -1;
if(a != 0xd || b != 0xa )
{
tmp = 0xd;
write(fpd,&tmp,1);
tmp = 0xa;
write(fpd,&tmp,1);
}
return 0;
}
int write_record(record_type record)
{
int len,i,j;
char tmp;
// fseek(fpa,SEEK_SET,SEEK_END);
stat("last.csv",&state);
len = state.st_size;;
if(len > 5000000)
{
close(fpd);
unlink("before.csv");
link("last.csv","before.csv");
unlink("last.csv");
file_save_init();
}
for(i=0;i<BOX_MAX;i )
{
write_time(record.time);
for(j=0;j<PART_MAX;j )
{
write_float(record.voltage[i][j]);
}
}
tmp = 0xd;
write(fpd,&tmp,1);
tmp = 0xa;
write(fpd,&tmp,1);
// fflush(fpa);
return 0;
}
/******************************************************************************************************************
*
*
*
*******************************************************************************************************************/
static overview_type battery_overview;
static batterybox_state_type batterybox_state[BOX_MAX]; //电源箱状态，包括风扇状态、报警等
static battery_state_type battery_state[BOX_MAX]; //下行内容，开始充电，充电完成等
static batterybox_configure_type batterybox_configure[BOX_MAX]; //上行内容
static struct {
int head;
int tail;
record_type buf[DATA_BUF_LEN];
} battery_data_buf;
static sem_t sem_data; //保证数据的互斥访问
/*
初始化 缓冲区为零，初始化信号量
*/
void data_access_init(void)
{
file_save_init();//数据储存文件初始化
memset(&battery_data_buf, 0, sizeof(battery_data_buf));
memset(&battery_overview, 0, sizeof(overview_type));
memset(&battery_state, 0, sizeof(battery_state));
memset(&batterybox_configure, 0, sizeof(batterybox_configure));
battery_data_buf.head = battery_data_buf.tail = 0;
sem_init(&sem_data,0,1);
}
/*
*/
void data_access_add(record_type data)
{
int posMax,posMin;
float sum ;
int count;
record_type * p;
if(data.alarm !=0)
write_record(data);//把记录保存到文件中，暂时在这里实现
sem_wait(&sem_data);
battery_data_buf.buf[battery_data_buf.tail] = data;
battery_data_buf.tail = (battery_data_buf.tail 1)%DATA_BUF_LEN;
//队列满则删除队列头一个记录
if(battery_data_buf.head == battery_data_buf.tail)
{
battery_data_buf.head = (battery_data_buf.head 1)%DATA_BUF_LEN;
}
posMax = 0;
posMin = 0;
sum = data.voltage[0][0];
for(count=1;count<BOX_MAX*PART_MAX;count )
{
sum = data.voltage[0][count];
if(data.voltage[0][count] > data.voltage[0][posMax])
posMax = count;
if(data.voltage[0][count] < data.voltage[0][posMin])
posMin = count;
}
battery_overview.voltage_max.box_num = posMax/PART_MAX 1;
battery_overview.voltage_max.part_num = posMax%PART_MAX 1;
battery_overview.voltage_max.value = data.voltage[0][posMax];
battery_overview.voltage_min.box_num = posMin/PART_MAX 1;
battery_overview.voltage_min.part_num = posMin%PART_MAX 1;
battery_overview.voltage_min.value = data.voltage[0][posMin];
battery_overview.voltage_total = sum;
posMax = 0;
posMin = 0;
for(count=1;count<BOX_MAX*3;count )
{
if(data.temperature[0][count] > data.temperature[0][posMax])
posMax = count;
if(data.temperature[0][count] < data.temperature[0][posMin])
posMin = count;
}
battery_overview.temperature_max.box_num = posMax%3 1;
battery_overview.temperature_max.value = data.temperature[0][posMax];
battery_overview.temperature_min.box_num = posMin%3 1;
battery_overview.temperature_min.value = data.temperature[0][posMin];
battery_overview.current_total = data.current;
battery_overview.alarm_num = data.alarm;
//if(
//还有soc 和 alarm_num 没有更新
sem_post(&sem_data);
}
/*
*/
int data_access_queuelen(void)
{
int len;
sem_wait(&sem_data);
len = (battery_data_buf.tail DATA_BUF_LEN-battery_data_buf.head)%DATA_BUF_LEN;
sem_post(&sem_data);
return len;
}
/*
*/
float data_access_get_voltage(int box_num, int part_num)
{
if(box_num < BOX_MAX && part_num < PART_MAX)
{
int index;
float voltage;
sem_wait(&sem_data);
if(battery_data_buf.head == battery_data_buf.tail)
{ voltage = 0; }
else
{
index = (battery_data_buf.tail DATA_BUF_LEN-1)%DATA_BUF_LEN;
voltage = battery_data_buf.buf[index].voltage[box_num][part_num];
}
sem_post(&sem_data);
return voltage;
}
else
{
return 0;
}
}
/*
*/
float data_access_get_temperature(int box_num, int n)
{
if((box_num < BOX_MAX) && n<3)
{
int index;
float temp;
sem_wait(&sem_data);
if(battery_data_buf.head == battery_data_buf.tail)
{ temp = 0; }
else
{
index = (battery_data_buf.tail DATA_BUF_LEN-1)%DATA_BUF_LEN;
temp = battery_data_buf.buf[index].temperature[box_num][n];
}
sem_post(&sem_data);
return temp;
}
else
{
return 0;
}
}
/*
*/
char data_access_get_fanstatus(int box_num)
{
if(box_num < BOX_MAX)
{
int index;
char fan;
sem_wait(&sem_data);
/*if(battery_data_buf.head == battery_data_buf.tail)
{ fan = 0; }
else
{
index = (battery_data_buf.tail DATA_BUF_LEN-1)%DATA_BUF_LEN;
fan = battery_data_buf.buf[index].state[box_num].fan;
}*/
fan = batterybox_state[box_num].fan;
sem_post(&sem_data);
return fan;
}
else
{
return 0;
}
}
/*
*/
float data_access_get_current(void)
{
int index;
float current;
sem_wait(&sem_data);
if(battery_data_buf.head == battery_data_buf.tail)
{ current = 0; }
else
{
index = (battery_data_buf.tail DATA_BUF_LEN-1)%DATA_BUF_LEN;
current = battery_data_buf.buf[index].current;
}
sem_post(&sem_data);
return current;
}
/*
*/
record_type data_access_get_recorditem(void)
{
int index;
record_type record;
sem_wait(&sem_data);
if(battery_data_buf.head == battery_data_buf.tail)
{ memset(&record, 0, sizeof(record)); }
else
{
index = (battery_data_buf.tail DATA_BUF_LEN-1)%DATA_BUF_LEN;
record = battery_data_buf.buf[index];
}
sem_post(&sem_data);
return record;
}
/*
*/
overview_type data_access_get_overview(void)
{
overview_type overview;
sem_wait(&sem_data);
overview = battery_overview;
sem_post(&sem_data);
return overview;
}
/*
*/
void data_access_savetofile(char *filename)
{
}
/*
* data_access_add_configure
* 添加站点配置信息
* box_num:电源箱编号
* data:配置数据
*/
void data_access_add_configure(int box_num, batterybox_configure_type data)
{
if(box_num < BOX_MAX)
{
sem_wait(&sem_data);
batterybox_configure[box_num] = data;
sem_post(&sem_data);
}
}
/*
*/
batterybox_configure_type data_access_get_configure(int box_num)
{
batterybox_configure_type result;
if(box_num < BOX_MAX)
{
sem_wait(&sem_data);
result = batterybox_configure[box_num];
sem_post(&sem_data);
}
else
{
memset(&result, 0, sizeof(result));
}
return result;
}
/*
* data_access_add_batterystate
* 添加电池状态数据
*/
void data_access_add_batterystate(int box_num, battery_state_type data)
{
if(box_num < BOX_MAX)
{
sem_wait(&sem_data);
battery_state[box_num] = data;
sem_post(&sem_data);
}
}
/*
*/
battery_state_type data_access_get_batterystate(int box_num)
{
battery_state_type result;
if(box_num < BOX_MAX)
{
sem_wait(&sem_data);
result = battery_state[box_num];
sem_post(&sem_data);
}
else
{
memset(&result, 0, sizeof(result));
}
return result;
}
/*
* data_access_add_boxstate
* 添加电源箱状态数据
*/
void data_access_add_boxstate(int box_num, batterybox_state_type data)
{
if(box_num < BOX_MAX)
{
sem_wait(&sem_data);
batterybox_state[box_num] = data;
sem_post(&sem_data);
}
}
/*
*/
batterybox_state_type data_access_get_boxstate(int box_num)
{
batterybox_state_type result;
if(box_num < BOX_MAX)
{
sem_wait(&sem_data);
result = batterybox_state[box_num];
sem_post(&sem_data);
}
else
{
memset(&result, 0, sizeof(result));
}
return result;
}