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Temperature control of the w5500 chip using a Fork

Quite often in the process of the device development it is necessary to monitor the temperature of individual elements of the circuit

BeginnerFull instructions provided2 hours205
Temperature control of the w5500 chip using a Fork

Things used in this project

Hardware components

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Story

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Schematics

shema stand

Code

Python script

Python
from forkapi.fork import Fork
import math
import matplotlib.pyplot as plt
import matplotlib.animation as animation
import time
import datetime
dev1=Fork('192.168.0.205')

a_res=10000
ntc_res=10000
ntc_b=3950
ao_ch_vcc = 0
ai_ch_ntc1 = 7
ai_ch_ntc2 = 6
max_ch_vcc = 5

def volt_to_res(volt):
    return a_res/(max_ch_vcc/volt-1)

def res_to_temp(res):
    return 1/( 1/298.15 + 1/ntc_b*math.log(res/ntc_res))

def volt_to_temp(volt):
    return res_to_temp(volt_to_res(volt))
dev1.aoSet(ao_ch_vcc, max_ch_vcc)

line1=[]
fig = plt.figure(figsize=(15,8))
ax = fig.add_subplot(111)

_time = []
T1=[]
T2=[]

v = dev1.aiGet(ao_ch_vcc)

v1, v2 = 0,0

# def animate(i, _time, T1,T2,last_v1, last_v2):
def animate(i, _time, T1,T2):
    
    _time.append(datetime.datetime.now())
    v1 = dev1.aiGet(ai_ch_ntc1)
    t1 = volt_to_temp( max(v1, animate.last_v1)) -273.15
    # v1 = max(dev1.aiGet(ai_ch_ntc1), dev1.aiGet(ai_ch_ntc1))
    # t1 = volt_to_temp( v1) -273.15
    T1.append(t1)
    animate.last_v1 = v1
    
    v2 = dev1.aiGet(ai_ch_ntc2)
    t2 = volt_to_temp(max(v2, animate.last_v2)) -273.15
    # v2 = max(dev1.aiGet(ai_ch_ntc2),dev1.aiGet(ai_ch_ntc2))
    # t2 = volt_to_temp(v2) -273.15
    T2.append(t2)
    animate.last_v2 = v2

    print (t1, t2)
    plt.cla()
    plt.plot(_time, T1)
    plt.plot(_time, T2)
    plt.ylabel('Temperature, \xB0C')
    plt.xticks(rotation=30, ha='right')
    labels = [ 'W5500' , 'ambient']
    plt.legend(labels, loc = 'best')
animate.last_v1, animate.last_v2 = dev1.aiGet(ai_ch_ntc1),dev1.aiGet(ai_ch_ntc2)
ani = animation.FuncAnimation(fig, animate, fargs=(_time, T1,T2), interval=1000)
plt.show()

Credits

FORK

FORK

11 projects • 1 follower
FORK for test-engineers to automate fixtures. Just take Fork, PyTest and program the tests in Python. The test stand is ready!
Thanks to Fork.

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