-
Notifications
You must be signed in to change notification settings - Fork 0
/
a body weight measurement
164 lines (150 loc) · 4.99 KB
/
a body weight measurement
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
lcd.begin(16, 2);
lcd.setCursor(0,0);
lcd.print("Hello, sir!");
lcd.setCursor(0,1);
lcd.print("Test Pressure!");
delay(1000);
lcd.clear();
//analogReference(INTERNAL);
//analogReadResolution(12);
}
void loop() {
// put your main code here, to run repeatedly:
//double smoothed = (smoothed * (t-1) + analogRead(A5)) / t;
//analogReference(AR_DEFAULT);
analogReadResolution(10);
//double sensor_value = analogRead(A5);
int average = 0;
for (int i=0; i < 50; i++) {
average = average + analogRead(A5);
}
double sensor_value = average/50;
//double s_v = smoothed;
//unsigned short int s_v;
//double s_v = analogRead(analogOutPin) / t;
float volt = ((double)sensor_value * 5) / 1024;
//double volt = ((double) s_v * 3.3 / 1024.0); //将返回值换算成电压
//float p_kpa = (10 * 1.206944593532122 * ((float) volt - 0.5));
//float smoothed = 7.982926100271057 * ((smoothed * (t-1) + (float) p_kpa) / t);
//float p_mmhg = ((float) p_kpa * 7.5006168);
//float p_mmhg = ((float) volt - 0.08) * 125;
//float p_mmhg = ((float) volt - 0.2) * 100;
//float p_psi = ((float) volt - 0.5) * 0.36259435 / 2;
float p_psi = sensor_value / 1000 -0.009;
//float p_psi = ((float) p_kpa * 0.14503774);
//float p_psi = (float) p_mmhg * 0.019336776;
//float p_kpa = (float) p_mmhg * 0.13332237;
//float p_kg_cm2 = ((float) p_kpa * 0.010197162 * 9975.4);
//float p_kg_cm2 = (((float)p_kpa * 862.16 ) + 5.9799);
//float p_kg_cm2 = (float) p_mmhg * 0.0013595098 * 9975.4;
//p_mmhg_int = ((double) p_mmhg + 19.857223) * 6.5437338;
//p_psi_int = ((double) p_psi + 0.3839747) * 6.54373323;
//float p_mmhg_int = ((float) p_mmhg - 0.4894812) * 65.573176809489946;
//float p_psi_int = ((float) p_psi - 0.00946499) * 65.57318745707179;
//float p_mmhg_int = (float) p_mmhg;
float p_psi_int = (float) p_psi ;
float p_kg_cm2 = ((float)p_psi_int * 862.16)- 510.39872;
float kg_analysis = (float) p_kg_cm2 + 25;
lcd.setCursor(0, 0);
lcd.print("Pressurize!");
//lcd.setCursor(3, 1);
//lcd.print("mmHg");
lcd.setCursor(11, 1);
lcd.print("kg");
/*if(p_mmhg_int >= 100){
a = (int)(p_mmhg_int / 100) + '0';
b = (int)((p_mmhg_int - 100) / 10) + '0';
c = (int)(((p_mmhg_int /10.0) - (int)(p_mmhg_int / 10.0)) * 10) + '0';
lcd.setCursor(0, 1);
lcd.print(a);
lcd.setCursor(1, 1);
lcd.print(b);
lcd.setCursor(2, 1);
lcd.print(c);
}else if(p_mmhg_int >= 10 && p_mmhg_int < 99.99){
b = (int)(p_mmhg_int / 10) + '0';
c = (int)(((p_mmhg_int / 10.0) - (int)(p_mmhg_int / 10.0)) * 10) + '0';
lcd.setCursor(0, 1);
lcd.print(b);
lcd.setCursor(1, 1);
lcd.print(c);
lcd.setCursor(2, 1);
lcd.print(" mmHg");
}else if(p_mmhg_int >= 1){
c = p_mmhg_int + '0';
lcd.setCursor(0, 1);
lcd.print(c);
lcd.setCursor(1, 1);
lcd.print(" mmHg");
}/*else if(p_mmhg_int = 0){
c = p_mmhg_int * 0 + '0';
lcd.setCursor(0, 1);
lcd.print(c);
lcd.setCursor(1, 1);
lcd.print(c);
}/*else if(p_mmhg_int <= 0){
lcd.setCursor(0, 1);
lcd.print(0);
lcd.setCursor(1, 1);
lcd.print(0);
}*/
if(kg_analysis >= 200){
lcd.setCursor(8, 1);
lcd.print("error");
}else if(kg_analysis >= 100){
d = (int)(kg_analysis / 100) + '0';
e = (int)((kg_analysis - 100) / 10) + '0';
f = (int)(((kg_analysis /10.0) - (int)(kg_analysis / 10.0)) * 10) + '0';
lcd.setCursor(8, 1);
lcd.print(d);
lcd.setCursor(9, 1);
lcd.print(e);
lcd.setCursor(10, 1);
lcd.print(f);
lcd.setCursor(11, 1);
//lcd.print("kg");
}else if(kg_analysis >= 26){
e = (int)(kg_analysis / 10) + '0';
f = (int)(((kg_analysis / 10.0) - (int)(kg_analysis / 10.0)) * 10) + '0';
lcd.setCursor(8, 1);
lcd.print(e);
lcd.setCursor(9, 1);
lcd.print(f);
lcd.setCursor(10, 1);
lcd.print(" kg");
}/*else if(kg_analysis >= 1){
f = kg_analysis + '0';
lcd.setCursor(8, 1);
lcd.print(f);
lcd.setCursor(9, 1);
lcd.print(" kg");
}*/else
{
delay(500);
lcd.clear();
}
/*Serial.print(analogRead(A5));
Serial.println(" bits");
Serial.print("\t");*/
Serial.print(sensor_value, 7);
Serial.println(" s_v");
Serial.print("\t");
Serial.print(volt, 7); //串口输出电压值
Serial.println(" V"); //输出单位，并且换行
Serial.print("\t");
//Serial.print(p_kpa, 7);
//Serial.println(" kpa");
//Serial.print("\t");
//Serial.print(p_mmhg_int, 7);
//Serial.println(" mmHg");
//Serial.print("\t");
Serial.print(p_psi_int, 8);
Serial.println(" psi");
Serial.print("\t");
/*Serial.print(kg_analysis, 8);
Serial.println(" kg");*/
delay(1000);
}